:root {
  --teal:        #4ecdc4;
  --teal-dim:    rgba(78,205,196,0.09);
  --teal-border: rgba(78,205,196,0.18);
  --bg:          #0d1a1a;
  --bg2:         #0f1e1e;
  --bg3:         #122020;
  --surface:     #162828;
  --surface2:    #1a2e2e;
  --border:      rgba(78,205,196,0.12);
  --border2:     rgba(78,205,196,0.06);
  --text:        #d4e8e6;
  --text2:       #5e8884;
  --text3:       #2e4e4c;
  --danger:      #e05252;
  --online:      #4caf74;
  --texting:     #e09840;
  --font-ui:     'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:   'Space Mono', monospace;
  --r:           10px;
  --r2:          18px;
  --sidebar-w:   268px;
  --header-h:    56px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  height: 100%; overflow: hidden;
  background: var(--bg); color: var(--text);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  user-select: none; -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  touch-action: pan-y;
}
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; -webkit-tap-highlight-color: transparent; }
input, textarea { font-family: inherit; color: inherit; background: none; border: none; outline: none; }
textarea { resize: none; }

/* ── Screen transitions ─────────────────────────── */
.screen {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  opacity: 0; pointer-events: none;
  transform: translateY(12px) scale(0.98);
  transition: opacity 0.4s cubic-bezier(0.22,1,0.36,1), transform 0.4s cubic-bezier(0.22,1,0.36,1);
  will-change: transform, opacity;
  z-index: 1;
}
.screen.active { opacity: 1; pointer-events: all; transform: none; z-index: 2; }
.screen.morph-exit { opacity: 0; transform: translateY(-10px) scale(1.02); pointer-events: none; transition: opacity 0.25s ease, transform 0.25s ease; }

/* ── Ripple ─────────────────────────────────────── */
#ripple-container { position: fixed; inset: 0; pointer-events: none; z-index: 9999; overflow: hidden; }
.ripple-wave { position: absolute; border-radius: 50%; background: rgba(78,205,196,0.18); animation: ripple-expand 0.6s ease-out forwards; }
@keyframes ripple-expand { from { transform: scale(0); opacity: 1; } to { transform: scale(4); opacity: 0; } }

/* ── Splash ─────────────────────────────────────── */
#splash { background: var(--bg); align-items: center; justify-content: center; }
.splash-inner { display: flex; flex-direction: column; align-items: center; gap: 0; }
.splash-icon-wrap {
  position: relative;
  width: 108px; height: 108px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.splash-icon {
  width: 72px; height: 72px;
  position: relative; z-index: 1;
  animation: splash-icon-in 0.5s cubic-bezier(0.34,1.56,0.64,1) both;
}
@keyframes splash-icon-in {
  from { transform: scale(0.6); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}
.splash-ring {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  animation: splash-ring-in 0.4s ease 0.2s both, ring-spin 1.4s linear 0.6s infinite;
  transform-origin: center;
}
@keyframes splash-ring-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes ring-spin { to { transform: rotate(360deg); } }
.splash-name {
  font-size: 1.6rem; font-weight: 700; color: var(--text);
  letter-spacing: -0.3px;
  animation: splash-text-in 0.5s ease 0.3s both;
}
@keyframes splash-text-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ── Join screen ────────────────────────────────── */
#join-screen { background: var(--bg); overflow-y: auto; }
.join-wrap { padding: 28px 20px 40px; max-width: 420px; margin: 0 auto; width: 100%; }
.join-header { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; animation: nx-morph-in 0.4s ease both; }
.join-logo { width: 52px; height: 52px; flex-shrink: 0; }
.join-appname { font-size: 1.4rem; font-weight: 700; color: var(--text); letter-spacing: -0.3px; }
.join-tag { font-size: 0.7rem; color: var(--text2); margin-top: 2px; }
.join-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 20px; animation: nx-morph-in 0.4s ease 0.06s both; }
.join-footer { font-size: 0.65rem; color: var(--text3); text-align: center; margin-top: 16px; }

/* ── Fields ─────────────────────────────────────── */
.field { margin-bottom: 16px; }
.field-lbl { display: block; font-size: 0.68rem; font-weight: 600; letter-spacing: 0.8px; color: var(--text2); text-transform: uppercase; margin-bottom: 7px; }
.opt { font-weight: 400; letter-spacing: 0; text-transform: none; font-size: 0.68rem; }
.field-input {
  width: 100%; padding: 11px 14px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--r); font-size: 0.88rem; color: var(--text);
  transition: border-color 0.15s;
}
.field-input:focus { border-color: var(--teal); outline: none; }
.field-input::placeholder { color: var(--text3); }
.input-row { display: flex; align-items: center; gap: 4px; }
.input-row .field-input { flex: 1; }
.field-hint { font-size: 0.68rem; color: var(--text2); margin-top: 5px; line-height: 1.5; }
.field-hint.warn { color: var(--texting); }

/* ── Entropy meter ──────────────────────────────── */
.entropy-wrap { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.entropy-track { flex: 1; height: 3px; background: var(--border); border-radius: 2px; overflow: hidden; }
.entropy-fill { height: 100%; border-radius: 2px; transition: width 0.3s ease, background 0.3s ease; }
.entropy-lbl { font-size: 0.62rem; font-weight: 600; letter-spacing: 1px; color: var(--text2); min-width: 60px; }

/* ── Segmented control ──────────────────────────── */
.seg-ctrl { display: flex; gap: 4px; padding: 4px; background: var(--bg2); border-radius: 12px; margin-bottom: 18px; }
.seg-btn { flex: 1; padding: 8px 10px; border-radius: 9px; font-size: 0.8rem; font-weight: 500; color: var(--text2); transition: all 0.18s; }
.seg-btn.active { background: var(--surface2); color: var(--teal); box-shadow: 0 1px 3px rgba(0,0,0,0.25); }

/* ── Tab panels ─────────────────────────────────── */
.tab-panel { display: none; animation: nx-morph-in 0.25s ease both; }
.tab-panel.active { display: block; }

/* ── Info row ───────────────────────────────────── */
.info-row { display: flex; align-items: flex-start; gap: 8px; padding: 9px 12px; background: rgba(78,205,196,0.05); border: 1px solid var(--teal-border); border-radius: var(--r); font-size: 0.71rem; color: var(--text2); line-height: 1.5; margin-bottom: 14px; }

/* ── Buttons ────────────────────────────────────── */
.btn-primary {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 13px 20px;
  background: var(--teal); border-radius: var(--r2);
  color: var(--bg); font-size: 0.88rem; font-weight: 600;
  transition: opacity 0.15s, transform 0.1s;
}
.btn-primary:hover { opacity: 0.92; }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { opacity: 0.38; cursor: not-allowed; transform: none; }
.btn-ghost { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 18px; border: 1.5px solid var(--border); border-radius: var(--r2); font-size: 0.82rem; font-weight: 500; color: var(--text2); width: 100%; transition: border-color 0.15s, color 0.15s; }
.btn-ghost:hover { border-color: var(--teal-border); color: var(--teal); }
.btn-text { display: block; margin: 8px auto 0; padding: 8px; font-size: 0.74rem; color: var(--text2); background: none; border: none; cursor: pointer; transition: color 0.15s; }
.btn-text:hover { color: var(--text); }
.btn-sm { padding: 6px 14px; background: var(--teal-dim); border: 1px solid var(--teal-border); border-radius: var(--r); font-size: 0.72rem; font-weight: 600; color: var(--teal); transition: background 0.15s; }
.btn-sm:hover { background: rgba(78,205,196,0.16); }
.btn-leave { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; padding: 10px; background: rgba(224,82,82,0.07); border: 1px solid rgba(224,82,82,0.18); border-radius: var(--r); color: var(--danger); font-size: 0.78rem; font-weight: 500; transition: background 0.15s; }
.btn-leave:hover { background: rgba(224,82,82,0.13); }
.eye-btn { padding: 8px; color: var(--text3); border-radius: var(--r); flex-shrink: 0; transition: color 0.15s; }
.eye-btn:hover { color: var(--text2); }

/* ── Error message ──────────────────────────────── */
.error-msg { font-size: 0.74rem; color: var(--danger); line-height: 1.5; min-height: 0; margin-top: 6px; transition: all 0.2s; }
.error-msg:not(:empty) { padding: 9px 12px; background: rgba(224,82,82,0.07); border: 1px solid rgba(224,82,82,0.18); border-radius: var(--r); }
@keyframes shake { 0%,100%{transform:translateX(0)} 25%{transform:translateX(-5px)} 75%{transform:translateX(5px)} }

/* ── Waiting screen ─────────────────────────────── */
#waiting-screen { background: var(--bg); align-items: center; justify-content: center; }
.waiting-wrap { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 32px 24px; text-align: center; }
.waiting-pulse { width: 80px; height: 80px; border-radius: 50%; border: 2px solid var(--teal-border); animation: waiting-pulse 2s ease-in-out infinite; margin-bottom: -70px; }
@keyframes waiting-pulse { 0%,100%{transform:scale(1);opacity:0.3} 50%{transform:scale(1.2);opacity:0.1} }
.waiting-title { font-size: 1.1rem; font-weight: 600; color: var(--text); }
.waiting-name { font-size: 0.8rem; color: var(--text2); }
.waiting-room-row { display: flex; align-items: center; gap: 6px; font-size: 0.74rem; color: var(--text2); }
.waiting-hint { font-size: 0.74rem; color: var(--text2); line-height: 1.6; max-width: 260px; }

/* ── Invite screen ──────────────────────────────── */
#invite-screen { background: var(--bg); align-items: center; justify-content: center; overflow-y: auto; }
.invite-wrap { display: flex; flex-direction: column; align-items: center; padding: 32px 24px; text-align: center; max-width: 400px; width: 100%; gap: 4px; }
.invite-logo { width: 64px; height: 64px; margin-bottom: 12px; }
.invite-eyebrow { font-size: 0.65rem; font-weight: 600; letter-spacing: 1.5px; color: var(--teal); text-transform: uppercase; margin-bottom: 4px; }
.invite-title { font-size: 1.2rem; font-weight: 700; color: var(--text); letter-spacing: -0.2px; margin-bottom: 6px; }
.invite-sub { font-size: 0.76rem; color: var(--text2); line-height: 1.5; margin-bottom: 16px; }

/* ── Loading dots ───────────────────────────────── */
.loading-dots { display: flex; gap: 6px; align-items: center; }
.loading-dots span { width: 6px; height: 6px; background: var(--teal); border-radius: 50%; animation: dot-bounce 1.2s ease-in-out infinite; }
.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes dot-bounce { 0%,80%,100%{transform:scale(0.6);opacity:0.4} 40%{transform:scale(1);opacity:1} }

/* ── Countdown block ────────────────────────────── */
.nx-countdown-bar { display: flex; align-items: center; gap: 10px; padding: 10px 12px; margin-top: 8px; background: rgba(224,82,82,0.07); border: 1px solid rgba(224,82,82,0.18); border-radius: var(--r); position: relative; overflow: hidden; }
.nx-countdown-progress { position: absolute; bottom: 0; left: 0; height: 2px; width: var(--p,0%); background: var(--c,var(--danger)); transition: width 0.24s linear; }

.sidebar { width: var(--sidebar-w); flex-shrink: 0; background: var(--bg2); border-right: 1px solid var(--border); display: flex; flex-direction: column; height: 100%; transition: transform 0.3s ease; z-index: 10; }

.sidebar-header { display: flex; align-items: center; gap: 10px; padding: 0 14px; height: var(--header-h); flex-shrink: 0; border-bottom: 1px solid var(--border); }

.sidebar-title-wrap { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.app-name { font-family: var(--font-ui); font-size: 0.88rem; font-weight: 800; letter-spacing: 4px; color: #fff; }

.room-code-pill {
  display: inline-block; align-self: flex-start;
  font-size: 0.56rem; letter-spacing: 2px; color: var(--teal);
  background: var(--teal-dim); border: 1px solid var(--border);
  padding: 2px 8px; border-radius: 100px; cursor: pointer;
  transition: all 0.15s; max-width: 160px; white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis; font-family: var(--font-mono);
}
.room-code-pill:hover { background: var(--teal-glow); border-color: var(--teal); }

.icon-btn { width: 34px; height: 34px; display: flex; align-items: center; justify-content: center; border-radius: var(--r); color: var(--text2); font-size: 0.95rem; transition: all 0.15s; flex-shrink: 0; }
.icon-btn:hover { background: var(--teal-dim); color: var(--teal); }
.icon-btn svg { display: block; }

.my-profile-mini { display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-bottom: 1px solid var(--border2); cursor: pointer; transition: background 0.15s; }
.my-profile-mini:hover { background: var(--teal-dim); }

.avatar-wrap { position: relative; flex-shrink: 0; }
.avatar { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-ui); font-size: 0.72rem; font-weight: 700; color: #fff; user-select: none; }

.status-dot { position: absolute; bottom: 0; right: 0; width: 10px; height: 10px; border-radius: 50%; border: 2px solid var(--bg2); }
.status-dot.online  { background: var(--online);  box-shadow: 0 0 5px var(--online); }
.status-dot.offline { background: var(--text3); }
.status-dot.texting { background: var(--texting); }
.status-dot.calling { background: var(--calling); }

.profile-info { flex: 1; min-width: 0; }
.profile-name { font-size: 0.8rem; font-weight: 700; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.profile-status { font-size: 0.6rem; color: var(--online); letter-spacing: 1px; margin-top: 2px; }
.encrypted-badge { font-size: 0.52rem; letter-spacing: 1px; color: var(--teal); border: 1px solid var(--border); padding: 2px 6px; border-radius: 4px; flex-shrink: 0; font-family: var(--font-ui); font-weight: 700; }

.sidebar-section { flex: 1; overflow-y: auto; display: flex; flex-direction: column; }
.sidebar-section::-webkit-scrollbar { width: 3px; }
.sidebar-section::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.section-label { font-family: var(--font-ui); font-size: 0.58rem; letter-spacing: 3px; color: var(--text2); font-weight: 600; padding: 10px 14px 6px; display: flex; align-items: center; gap: 8px; }
.count-badge { background: var(--teal); color: var(--bg); border-radius: 100px; padding: 1px 7px; font-size: 0.58rem; font-family: var(--font-ui); font-weight: 700; }
.members-list { display: flex; flex-direction: column; gap: 1px; padding: 0 8px 8px; }

.member-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: var(--r);
  cursor: pointer; transition: background 0.15s;
  animation: fade-up 0.2s ease both;
}
.member-item:hover { background: var(--teal-dim); }
.member-item.active { background: var(--teal-dim); border: 1px solid var(--teal-border); }
.member-item .avatar { width: 34px; height: 34px; font-size: 0.68rem; flex-shrink: 0; }
.member-item .status-dot { position: static; border: none; width: 7px; height: 7px; flex-shrink: 0; }
.member-info { flex: 1; min-width: 0; }
.member-name { font-size: 0.78rem; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.member-activity { font-size: 0.6rem; color: var(--text2); margin-top: 2px; }
.member-activity.chatting { color: var(--texting); }
.member-activity.calling  { color: var(--calling); }
.member-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 3px; flex-shrink: 0; }
.unread-badge { background: var(--teal); color: var(--bg); border-radius: 100px; padding: 1px 6px; font-size: 0.6rem; font-family: var(--font-ui); font-weight: 700; }
.member-meta .msg-time { font-size: 0.58rem; color: var(--text2); }

.sidebar-footer { padding: 11px 14px; border-top: 1px solid var(--border); flex-shrink: 0; }
.btn-logout { width: 100%; padding: 9px 14px; display: flex; align-items: center; justify-content: center; gap: 8px; background: transparent; border: 1px solid var(--border); border-radius: var(--r); color: var(--text2); font-family: var(--font-ui); font-size: 0.68rem; font-weight: 600; letter-spacing: 2px; transition: all 0.2s; }
.btn-logout:hover { border-color: var(--danger); color: var(--danger); background: rgba(255,107,107,0.06); }

.main-area { flex: 1; min-width: 0; display: flex; flex-direction: column; height: 100%; position: relative; }
.chat-view { flex: 1; display: none; flex-direction: column; height: 100%; overflow: hidden; }
.chat-view.active { display: flex; }

.chat-header { display: flex; align-items: center; gap: 10px; padding: 0 14px; height: var(--header-h); flex-shrink: 0; background: var(--bg2); border-bottom: 1px solid var(--border); }
.chat-header-info { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.chat-avatar { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-ui); font-size: 0.72rem; font-weight: 700; color: #fff; flex-shrink: 0; }
.chat-name { font-size: 0.86rem; font-weight: 700; color: var(--text); }
.chat-status { font-size: 0.63rem; color: var(--text2); margin-top: 2px; }
.chat-status.online  { color: var(--online); }
.chat-status.texting { color: var(--texting); }
.chat-status.calling { color: var(--calling); }
.chat-actions { display: flex; align-items: center; gap: 2px; }
.call-btn { color: var(--teal); }

.messages-area { flex: 1; overflow-y: auto; padding: 16px 14px 8px; display: flex; flex-direction: column; gap: 3px; scroll-behavior: smooth; }
.messages-area::-webkit-scrollbar { width: 3px; }
.messages-area::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.empty-chat { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; text-align: center; padding: 32px; }
.empty-icon { opacity: 0.55; }
.empty-chat p { font-size: 0.82rem; color: var(--text2); line-height: 1.75; }
.enc-note { font-size: 0.62rem; color: var(--text3); letter-spacing: 1.5px; }

.date-divider { display: flex; align-items: center; gap: 10px; margin: 10px 0; }
.date-divider::before, .date-divider::after { content:''; flex:1; height:1px; background: var(--border2); }
.date-divider span { font-size: 0.6rem; color: var(--text2); letter-spacing: 2px; white-space: nowrap; }

.msg-wrapper { display: flex; flex-direction: column; margin: 2px 0; animation: msg-in 0.2s ease both; }
@keyframes msg-in { from{opacity:0;transform:translateY(7px)} to{opacity:1;transform:none} }
.msg-wrapper.sent   { align-items: flex-end; }
.msg-wrapper.received { align-items: flex-start; }
.msg-bubble-wrap { display: flex; align-items: flex-end; gap: 7px; max-width: 74%; }
.msg-small-avatar { width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-ui); font-size: 0.6rem; font-weight: 700; color: #fff; flex-shrink: 0; }
.msg-bubble { padding: 9px 13px; border-radius: 16px; font-size: 0.85rem; line-height: 1.55; word-break: break-word; }
.msg-wrapper.sent     .msg-bubble { background: linear-gradient(135deg, var(--teal) 0%, #3bbfb6 100%); color: var(--bg); border-bottom-right-radius: 4px; box-shadow: 0 2px 12px rgba(78,205,196,0.22); }
.msg-wrapper.received .msg-bubble { background: var(--surface2); color: var(--text); border: 1px solid var(--border2); border-bottom-left-radius: 4px; }
.msg-image img { max-width: 200px; border-radius: 8px; display: block; }
.msg-meta { display: flex; align-items: center; gap: 5px; margin-top: 3px; padding: 0 2px; }
.msg-time-sm { font-size: 0.58rem; color: var(--text2); }
.msg-status { font-size: 0.62rem; color: var(--teal); }

.typing-indicator { display: flex; align-items: center; gap: 4px; padding: 5px 16px; flex-shrink: 0; }
.typing-indicator span { width: 6px; height: 6px; border-radius: 50%; background: var(--teal); opacity: 0.4; animation: typing-bounce 1s ease-in-out infinite; }
.typing-indicator span:nth-child(2) { animation-delay: 0.15s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.30s; }
@keyframes typing-bounce { 0%,100%{opacity:0.35;transform:scale(0.8)} 50%{opacity:1;transform:scale(1.15)} }
.typing-text { font-size: 0.63rem; color: var(--text2); margin-left: 4px; letter-spacing: 1px; }

.input-area { display: flex; align-items: flex-end; gap: 8px; padding: 10px 12px; padding-bottom: max(10px, env(safe-area-inset-bottom)); background: var(--bg2); border-top: 1px solid var(--border); flex-shrink: 0; }
.input-toolbar { flex-shrink: 0; }
.attach-btn { color: var(--text2); }
.attach-btn:hover { color: var(--teal); }
.msg-input-wrap { flex: 1; }
.msg-input-wrap textarea { width: 100%; padding: 10px 14px; background: var(--surface); border: 1px solid var(--border); border-radius: 20px; outline: none; color: var(--text); font-family: var(--font-mono); font-size: 0.86rem; line-height: 1.55; max-height: 120px; overflow-y: auto; transition: border-color 0.2s; }
.msg-input-wrap textarea:focus { border-color: var(--teal); }
.msg-input-wrap textarea::placeholder { color: var(--text2); }
.msg-input-wrap textarea::-webkit-scrollbar { display: none; }
.send-btn { width: 42px; height: 42px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; background: var(--teal); border-radius: 50%; color: var(--bg); transition: background 0.15s, transform 0.15s; box-shadow: 0 2px 12px rgba(78,205,196,0.32); }
.send-btn:hover { background: #3bbfb6; transform: scale(1.06); }

.call-overlay { position: absolute; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; }
.call-bg { position: absolute; inset: 0; background: rgba(8,16,16,0.96); backdrop-filter: blur(14px); }
.call-content { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 14px; padding: 40px 24px; text-align: center; }
.call-status-text { font-size: 0.68rem; letter-spacing: 3px; color: var(--text2); }
.call-avatar-large { width: 88px; height: 88px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-ui); font-size: 1.8rem; font-weight: 700; color: #fff; box-shadow: 0 0 0 12px rgba(78,205,196,0.08), 0 0 0 24px rgba(78,205,196,0.04); animation: call-pulse 2s ease-in-out infinite; }
@keyframes call-pulse { 0%,100%{box-shadow:0 0 0 12px rgba(78,205,196,0.08),0 0 0 24px rgba(78,205,196,0.04)} 50%{box-shadow:0 0 0 16px rgba(78,205,196,0.13),0 0 0 32px rgba(78,205,196,0.05)} }
.call-name-large { font-family: var(--font-ui); font-size: 1.25rem; font-weight: 700; color: #fff; letter-spacing: 2px; }
.call-type-badge { font-size: 0.63rem; letter-spacing: 3px; color: var(--teal); background: var(--teal-dim); border: 1px solid var(--border); padding: 4px 14px; border-radius: 100px; }
.call-timer { font-family: var(--font-mono); font-size: 1.1rem; color: var(--text); letter-spacing: 2px; }
.call-controls { display: flex; gap: 22px; margin-top: 6px; }
.call-ctrl-btn { width: 54px; height: 54px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: var(--surface2); border: 1px solid var(--border); color: var(--text); transition: all 0.2s; }
.call-ctrl-btn:hover { background: var(--teal-dim); border-color: var(--teal); color: var(--teal); }
.call-ctrl-btn.end-call { background: var(--danger); border-color: var(--danger); color: #fff; }
.call-ctrl-btn.end-call:hover { background: #e05555; }
.call-ctrl-btn.accept { background: var(--online); border-color: var(--online); color: #fff; }
.call-ctrl-btn.decline { background: var(--danger); border-color: var(--danger); color: #fff; }
.call-wave { display: flex; align-items: center; gap: 4px; height: 28px; }
.call-wave span { width: 4px; border-radius: 2px; background: var(--teal); animation: wave-bar 1s ease-in-out infinite; }
.call-wave span:nth-child(1){height:8px;animation-delay:0.0s} .call-wave span:nth-child(2){height:18px;animation-delay:0.1s} .call-wave span:nth-child(3){height:26px;animation-delay:0.2s} .call-wave span:nth-child(4){height:18px;animation-delay:0.3s} .call-wave span:nth-child(5){height:8px;animation-delay:0.4s}
@keyframes wave-bar { 0%,100%{transform:scaleY(0.5);opacity:0.5} 50%{transform:scaleY(1);opacity:1} }

.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.72); backdrop-filter: blur(5px); z-index: 100; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--r2); width: 100%; max-width: 380px; max-height: 90vh; overflow-y: auto; animation: modal-in 0.25s ease both; }
@keyframes modal-in { from{opacity:0;transform:scale(0.95)translateY(10px)} to{opacity:1;transform:none} }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.modal-header h3 { font-family: var(--font-ui); font-size: 0.82rem; font-weight: 700; letter-spacing: 4px; color: var(--teal); }
.modal-body { padding: 18px; display: flex; flex-direction: column; gap: 15px; }
.setting-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.setting-item label { font-size: 0.62rem; letter-spacing: 2px; color: var(--text2); font-family: var(--font-ui); font-weight: 600; }
.setting-value { font-size: 0.7rem; color: var(--text2); font-family: var(--font-mono); }
.setting-value.teal { color: var(--teal); }
.setting-input { flex: 1; padding: 7px 11px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); color: var(--text); font-family: var(--font-mono); font-size: 0.78rem; outline: none; max-width: 200px; }
.setting-input:focus { border-color: var(--teal); }
.toggle-wrap { position: relative; }
.toggle-wrap input[type="checkbox"] { display: none; }
.toggle { display: block; width: 42px; height: 22px; background: var(--surface2); border: 1px solid var(--border); border-radius: 100px; cursor: pointer; transition: all 0.25s; position: relative; }
.toggle::after { content:''; position: absolute; top:2px; left:2px; width:16px; height:16px; background: var(--text2); border-radius: 50%; transition: transform 0.25s, background 0.25s; }
.toggle-wrap input:checked + .toggle { background: var(--teal-dim); border-color: var(--teal); }
.toggle-wrap input:checked + .toggle::after { transform: translateX(20px); background: var(--teal); }

.toast-container { position: fixed; bottom: 24px; right: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 200; pointer-events: none; max-width: 320px; }
.toast { background: var(--surface2); border: 1px solid var(--border); border-radius: var(--r2); padding: 12px 16px; display: flex; align-items: flex-start; gap: 12px; pointer-events: all; cursor: pointer; animation: toast-slide 0.3s ease both; position: relative; overflow: hidden; box-shadow: 0 8px 32px rgba(0,0,0,0.4); }
@keyframes toast-slide { from{opacity:0;transform:translateX(20px)} to{opacity:1;transform:none} }
.toast.removing { animation: toast-remove 0.3s ease forwards; }
@keyframes toast-remove { to{opacity:0;transform:translateX(20px)} }
.toast-icon { font-size: 1rem; flex-shrink: 0; color: var(--teal); margin-top: 1px; }
.toast-body { flex: 1; min-width: 0; }
.toast-title { font-size: 0.75rem; font-weight: 700; color: var(--text); font-family: var(--font-ui); }
.toast-msg { font-size: 0.68rem; color: var(--text2); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.toast-bar { position: absolute; bottom: 0; left: 0; height: 2px; background: var(--teal); animation: toast-bar-shrink 4.5s linear forwards; }
@keyframes toast-bar-shrink { from{width:100%} to{width:0} }

.incoming-call { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r2); padding: 14px 18px; display: flex; align-items: center; justify-content: space-between; gap: 16px; min-width: 300px; max-width: 380px; width: 90%; z-index: 300; box-shadow: 0 8px 32px rgba(0,0,0,0.5); animation: slide-down 0.3s ease both; }
@keyframes slide-down { from{opacity:0;transform:translateX(-50%)translateY(-20px)} to{opacity:1;transform:translateX(-50%)translateY(0)} }
.incoming-info { display: flex; align-items: center; gap: 12px; }
.incoming-avatar { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-ui); font-size: 0.8rem; font-weight: 700; color: #fff; flex-shrink: 0; }
.incoming-name { font-size: 0.85rem; font-weight: 700; color: var(--text); }
.incoming-type { font-size: 0.62rem; color: var(--text2); margin-top: 2px; letter-spacing: 1px; }
.incoming-actions { display: flex; gap: 12px; }
.incoming-actions .call-ctrl-btn { width: 44px; height: 44px; }

@keyframes fade-up { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:none} }
.hidden { display: none !important; }

.chat-header  { padding-top: max(0px, env(safe-area-inset-top)); }
.input-area   { padding-bottom: max(10px, calc(env(safe-area-inset-bottom) + 6px)); }
.sidebar-footer { padding-bottom: max(11px, calc(env(safe-area-inset-bottom) + 6px)); }
#join-screen  { padding-top: env(safe-area-inset-top); }

.join-container::-webkit-scrollbar { width: 3px; }
.join-container::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

@media (max-width: 640px) {
  .sidebar { position: fixed; inset: 0; right: auto; transform: translateX(-100%); width: 82vw; max-width: 300px; pointer-events: none; }
  .sidebar.open { transform: translateX(0); box-shadow: 4px 0 24px rgba(0,0,0,0.6); pointer-events: all; }
  .main-area { width: 100%; }

  .msg-bubble-wrap { max-width: 88%; }
  .toast-container { right: 12px; left: 12px; max-width: none; }
  .call-controls { gap: 16px; }
  .call-ctrl-btn { width: 48px; height: 48px; }
  .join-tab-btn { font-size: 0.55rem; padding: 10px 6px; gap: 5px; }

  .join-container { max-height: 100vh; overflow-y: auto; justify-content: flex-start; padding-top: 24px; }
  #join-screen { justify-content: flex-start; }
}

@media (max-width: 360px) {
  .join-tab-btn span { display: none; }
  .splash-title { font-size: 2.2rem; letter-spacing: 7px; }
}

.group-avatar {
  width: 36px; height: 36px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--teal-dim);
  border: 1px solid var(--border);
  border-radius: 50%;
}

.online-dot-sm {
  display: inline-block;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--online); box-shadow: 0 0 4px var(--online);
  animation: blink 2s ease-in-out infinite;
  margin-right: 4px; vertical-align: middle;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.35} }

.room-welcome {
  display: flex; flex-direction: column; align-items: center;
  gap: 12px; padding: 40px 24px; text-align: center;
  margin-bottom: 8px;
}
.welcome-icon { opacity: 0.6; }
.welcome-title {
  font-family: var(--font-ui); font-size: 1rem;
  font-weight: 700; letter-spacing: 4px; color: var(--teal);
}
.welcome-sub {
  font-size: 0.75rem; color: var(--text2);
  line-height: 1.7; max-width: 280px;
}

#input-area { display: flex !important; }

#tab-create .code-hint {
  font-size: 0.62rem; color: var(--teal); opacity: 0.7;
  letter-spacing: 0.5px; margin-top: -2px; line-height: 1.5;
}

.msg-media {
  position: relative; border-radius: 10px; overflow: hidden;
  max-width: 240px; cursor: pointer;
  background: var(--bg3);
  border: 1px solid var(--border2);
}
.msg-media img {
  width: 100%; display: block; border-radius: 10px;
  max-height: 300px; object-fit: cover;
}
.msg-media.loading {
  width: 200px; height: 140px;
  display: flex; align-items: center; justify-content: center;
}
.media-decrypt-spinner {
  width: 24px; height: 24px; border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--teal);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.media-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: all 0.2s; color: #fff;
}
.msg-media:hover .media-overlay { opacity: 1; background: rgba(0,0,0,0.3); }

.video-thumb {
  width: 200px; height: 120px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 8px; background: var(--bg3);
  border: 1px solid var(--border); border-radius: 10px;
  cursor: pointer; transition: border-color 0.2s;
}
.video-thumb:hover { border-color: var(--teal); }
.video-play-btn {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--teal); display: flex;
  align-items: center; justify-content: center;
  color: var(--bg);
}
.video-label {
  font-size: 0.65rem; color: var(--text2);
  max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.msg-file {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 10px; text-decoration: none; color: var(--text);
  transition: border-color 0.2s; min-width: 180px; max-width: 240px;
}
.msg-file:hover { border-color: var(--teal); }
.file-icon { color: var(--teal); flex-shrink: 0; }
.file-info { flex: 1; min-width: 0; }
.file-name {
  font-size: 0.78rem; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.file-size { font-size: 0.62rem; color: var(--text2); margin-top: 2px; }
.file-dl { color: var(--teal); flex-shrink: 0; }

.media-viewer {
  position: fixed; inset: 0; z-index: 5000;
  background: rgba(0,0,0,0.94);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.media-viewer img, .media-viewer video {
  max-width: 100%; max-height: 90vh;
  border-radius: 8px; object-fit: contain;
}
.mv-close {
  position: absolute; top: 16px; right: 16px;
  width: 38px; height: 38px;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: var(--text); cursor: pointer; z-index: 1;
  transition: all 0.15s;
}
.mv-close:hover { background: var(--danger); border-color: var(--danger); color: #fff; }

.msg-sender {
  font-family: var(--font-ui); font-size: 0.6rem; font-weight: 700;
  margin-bottom: 3px; letter-spacing: 1px;
}

.msg-system {
  display: flex; justify-content: center; margin: 6px 0;
}
.msg-system span {
  font-size: 0.6rem; letter-spacing: 1.5px; color: var(--text2);
  background: var(--bg2); border: 1px solid var(--border2);
  padding: 3px 14px; border-radius: 100px;
}

.member-item { cursor: default; }
.member-item:hover { background: transparent; }

.date-divider {
  display: flex; align-items: center; gap: 10px; margin: 10px 0;
}
.date-divider::before, .date-divider::after {
  content:''; flex:1; height:1px; background: var(--border2);
}
.date-divider span {
  font-size: 0.6rem; color: var(--text2); letter-spacing: 2px; white-space: nowrap;
}

.input-area {
  padding-bottom: max(10px, calc(env(safe-area-inset-bottom) + 6px));
}

@media (max-width: 640px) {
  .msg-media { max-width: 200px; }
  .msg-file  { min-width: 160px; }
}

.hamburger-btn { display: none; }

@media (min-width: 641px) {
  .sidebar {
    position: relative !important;
    transform: none !important;
    pointer-events: all !important;
    z-index: 10 !important;
    flex-shrink: 0;
    box-shadow: none !important;
  }

  .hamburger-btn   { display: none !important; }
}

@media (max-width: 640px) {
  .hamburger-btn { display: flex !important; }

  .sidebar {
    position: fixed !important;
    top: 0 !important; bottom: 0 !important; left: 0 !important; right: auto !important;
    width: 80vw !important;
    max-width: 288px !important;
    transform: translateX(-100%) !important;
    pointer-events: none !important;
    z-index: 20 !important;
    transition: transform 0.28s cubic-bezier(0.4,0,0.2,1),
                box-shadow 0.28s ease !important;
    box-shadow: none !important;
  }
  .sidebar.open {
    transform: translateX(0) !important;
    pointer-events: all !important;
    box-shadow: 6px 0 32px rgba(0,0,0,0.6) !important;
  }
  body.sidebar-active { overflow: hidden; touch-action: none; }
}

.typing-indicator {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 5px 16px;
  flex-shrink: 0;
  min-height: 28px;
}
.typing-indicator.visible { display: flex; }

.typing-indicator > span {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--teal); opacity: 0.4;
  animation: typing-bounce 1s ease-in-out infinite;
  flex-shrink: 0;
}
.typing-indicator > span:nth-child(2) { animation-delay: 0.15s; }
.typing-indicator > span:nth-child(3) { animation-delay: 0.30s; }
@keyframes typing-bounce {
  0%,100% { opacity:0.35; transform:scale(0.8); }
  50%      { opacity:1;   transform:scale(1.2); }
}

.typing-text {
  font-size: 0.65rem; color: var(--text2);
  font-family: var(--font-mono); letter-spacing: 0.5px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  font-style: italic;
}

.me-tag {
  opacity: 0.5; font-size: 0.65em;
  font-family: var(--font-mono); font-weight: 400;
}

.media-tap-hint {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.5));
  color: rgba(255,255,255,0.7);
  font-size: 0.6rem; letter-spacing: 1px;
  padding: 8px 10px 6px;
  border-radius: 0 0 10px 10px;
  opacity: 0; transition: opacity 0.2s;
}
.msg-media:hover .media-tap-hint { opacity: 1; }

.media-decrypt-label {
  font-size: 0.62rem; color: var(--text2);
  letter-spacing: 1px; margin-top: 6px;
}

#app .input-area { display: flex !important; }

@media (max-width: 640px) {
  .chat-header { padding: 0 10px; }
  .chat-header-info { gap: 8px; }
}

#sidebar-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 19;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.28s ease;
  pointer-events: none;
  will-change: opacity;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.hamburger-btn { display: none !important; }

@media (min-width: 641px) {
  .sidebar {
    position: relative !important;
    transform: none !important;
    pointer-events: all !important;
    z-index: 10 !important;
    box-shadow: none !important;
  }
  #sidebar-overlay { display: none !important; }
  .hamburger-btn   { display: none !important; }
}

@media (max-width: 640px) {
  .hamburger-btn { display: flex !important; }

  .sidebar {
    position: fixed !important;
    top: 0 !important; left: 0 !important; bottom: 0 !important; right: auto !important;
    width: 80vw !important; max-width: 288px !important;
    transform: translateX(-100%) !important;
    pointer-events: none !important;
    z-index: 20 !important;
    transition: transform 0.28s cubic-bezier(0.4,0,0.2,1), box-shadow 0.28s ease !important;
    box-shadow: none !important;
  }
  .sidebar.open {
    transform: translateX(0) !important;
    pointer-events: all !important;
    box-shadow: 6px 0 32px rgba(0,0,0,0.65) !important;
  }
  body.sidebar-active {
    overflow: hidden;
    touch-action: none;
  }
}

.typing-indicator { display: none; }
.typing-indicator.visible { display: flex; }

@keyframes msg-in { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:none} }
.msg-wrapper { animation: msg-in 0.2s ease both; }

* {
  -webkit-tap-highlight-color: transparent !important;
  -webkit-touch-callout: none !important;
}

body, .sidebar, .chat-header, .messages-area,
.msg-wrapper, .msg-bubble-wrap, .msg-inner,
.msg-sender, .msg-meta, .msg-time-sm, .msg-status,
.msg-system, .member-item, .sidebar-header,
.room-welcome, .typing-indicator, .section-label,
.profile-name, .profile-status, .app-name,
.room-code-pill, .chat-name, .chat-status,
.welcome-title, .welcome-sub, .enc-note,
.join-header h2, .join-header p, .splash-title, .splash-sub,
label, .field-group label, button {
  user-select: none !important;
  -webkit-user-select: none !important;
}

.msg-swipe-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;

}

.msg-reply-indicator {
  position: absolute;
  left: -32px;
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transition: opacity 0.15s;
  pointer-events: none;
  flex-shrink: 0;
}
.msg-wrapper.sent .msg-reply-indicator {
  left: auto; right: -32px;
}

.msg-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.15s;
  flex-shrink: 0;
  margin: 0 4px;
}
.msg-wrapper:hover .msg-actions,
.msg-wrapper.show-actions .msg-actions {
  opacity: 1;
}

.msg-reply-btn,
.msg-delete-btn {
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  cursor: pointer;
  transition: all 0.15s;
  flex-shrink: 0;
}
.msg-reply-btn:hover  { color: var(--teal);   border-color: var(--teal);   background: var(--teal-dim); }
.msg-delete-btn:hover { color: var(--danger);  border-color: var(--danger); background: rgba(255,107,107,.1); }

.msg-wrapper.sent .msg-bubble-wrap  { flex-direction: row-reverse; }
.msg-wrapper.sent .msg-actions      { order: -1; }

.reply-quote {
  background: rgba(0,0,0,0.15);
  border-left: 3px solid var(--teal);
  border-radius: 6px 6px 0 0;
  padding: 5px 9px;
  margin-bottom: 4px;
  max-width: 100%;
}
.msg-wrapper.sent .reply-quote {
  border-left-color: rgba(255,255,255,0.5);
  background: rgba(0,0,0,0.15);
}
.rq-sender {
  font-family: var(--font-ui);
  font-size: 0.6rem; font-weight: 700;
  color: var(--teal); letter-spacing: 0.5px;
  margin-bottom: 2px;
}
.msg-wrapper.sent .rq-sender { color: rgba(255,255,255,0.7); }
.rq-text {
  font-size: 0.75rem;
  color: var(--text2);
  line-height: 1.4;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.msg-wrapper.sent .rq-text { color: rgba(255,255,255,0.6); }

.reply-bar {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border2);
  flex-shrink: 0;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.25s, transform 0.25s;
}
.reply-bar.visible {
  opacity: 1;
  transform: translateY(0);
}
.reply-bar-line {
  width: 3px; height: 32px;
  border-radius: 3px;
  background: var(--teal);
  flex-shrink: 0;
}
.reply-bar-content { flex: 1; min-width: 0; }
.reply-bar-sender {
  font-family: var(--font-ui);
  font-size: 0.62rem; font-weight: 700;
  color: var(--teal); letter-spacing: 0.5px;
  margin-bottom: 2px;
}
.reply-bar-text {
  font-size: 0.75rem; color: var(--text2);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.reply-bar-close {
  width: 26px; height: 26px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--bg3); border: 1px solid var(--border);
  color: var(--text2); cursor: pointer;
  transition: all 0.15s;
}
.reply-bar-close:hover { color: var(--danger); border-color: var(--danger); }

@media (max-width: 640px) {
  .msg-actions { opacity: 1; }
  .msg-reply-btn { opacity: 0.55; }
  .msg-wrapper:active .msg-reply-btn { opacity: 1; }
}

.reply-quote {
  cursor: pointer;
  transition: opacity 0.15s;
}
.reply-quote:hover { opacity: 0.82; }
.reply-quote:active { opacity: 0.65; }

.rq-media {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem;
  color: var(--teal);
  opacity: 0.9;
  font-family: var(--font-mono);
}
.msg-wrapper.sent .rq-media { color: rgba(255,255,255,0.75); }

.rq-media-inline {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--teal);
  font-size: 0.72rem;
}

@keyframes msg-highlight-pulse {
  0%   { background: transparent; }
  20%  { background: rgba(78,205,196,0.18); border-radius: 10px; }
  80%  { background: rgba(78,205,196,0.12); border-radius: 10px; }
  100% { background: transparent; }
}
.msg-highlight { animation: msg-highlight-pulse 2s ease !important; }

.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.22s, transform 0.22s;
}
.search-bar.visible { opacity: 1; transform: none; }
.search-bar input {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 7px 14px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  outline: none;
  transition: border-color 0.2s;
}
.search-bar input:focus { border-color: var(--teal); }
.search-bar input::placeholder { color: var(--text2); }
.search-count {
  font-size: 0.62rem;
  color: var(--text2);
  letter-spacing: 1px;
  white-space: nowrap;
  font-family: var(--font-ui);
}

#search-btn.active { color: var(--teal); background: var(--teal-dim); }

.msg-reactions {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 4px;
  min-height: 0;
}
.reaction-chip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 8px 2px 6px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.15s;
  line-height: 1;
}
.reaction-chip:hover { border-color: var(--teal); background: var(--teal-dim); }
.reaction-chip.mine  { border-color: var(--teal); background: var(--teal-dim); }
.reaction-count {
  font-size: 0.62rem;
  font-family: var(--font-ui);
  font-weight: 700;
  color: var(--text2);
  min-width: 10px;
}
.reaction-chip.mine .reaction-count { color: var(--teal); }

.reaction-picker {
  position: absolute;
  bottom: calc(100% + 6px);
  display: flex;
  gap: 4px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 10px;
  box-shadow: 0 8px 28px rgba(0,0,0,0.5);
  z-index: 50;
  opacity: 0;
  transform: scale(0.85) translateY(6px);
  transform-origin: bottom center;
  transition: opacity 0.15s, transform 0.15s;
  pointer-events: none;
}
.reaction-picker.visible {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: all;
}
.reaction-opt {
  font-size: 1.25rem;
  padding: 4px;
  border-radius: 50%;
  transition: transform 0.12s, background 0.12s;
  line-height: 1;
}
.reaction-opt:hover { transform: scale(1.3); background: var(--teal-dim); }

.msg-context-menu {
  position: absolute;
  bottom: calc(100% + 6px);
  min-width: 150px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px;
  box-shadow: 0 8px 28px rgba(0,0,0,0.55);
  z-index: 60;
  opacity: 0;
  transform: scale(0.92) translateY(6px);
  transform-origin: bottom center;
  transition: opacity 0.15s, transform 0.15s;
  pointer-events: none;
}
.msg-context-menu.visible {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: all;
}
.ctx-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 9px 12px;
  border-radius: 7px;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text);
  text-align: left;
  transition: background 0.12s, color 0.12s;
}
.ctx-item:hover  { background: var(--teal-dim); color: var(--teal); }
.ctx-item.danger { color: var(--text2); }
.ctx-item.danger:hover { background: rgba(255,107,107,0.1); color: var(--danger); }
.ctx-item.disabled {
  opacity: 0.4; pointer-events: none; cursor: default;
}
.ctx-edit-timer {
  margin-left: auto;
  font-size: 0.6rem;
  font-family: var(--font-mono);
  color: var(--teal);
  opacity: 0.8;
  letter-spacing: 0;
}
.ctx-edit-timer.expired { color: var(--text2); }

.edit-countdown {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--teal);
  margin-left: 6px;
  font-weight: 400;
  opacity: 0.9;
  transition: color 0.3s;
}
.edit-countdown.urgent { color: var(--danger) !important; animation: pulse-urgent 1s ease-in-out infinite; }
@keyframes pulse-urgent { 0%,100%{opacity:0.7} 50%{opacity:1} }

.msg-edited {
  font-size: 0.6rem;
  color: var(--text2);
  font-style: italic;
  letter-spacing: 0.3px;
  margin-left: 2px;
  opacity: 0.75;
}
.msg-wrapper.sent .msg-edited { color: rgba(13,26,26,0.55); }

.editing-highlight {
  outline: 2px solid var(--teal) !important;
  outline-offset: 2px;
}

.msg-bubble .msg-edited { vertical-align: baseline; }

.mention-dropdown {
  display: none;
  flex-direction: column;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 -8px 24px rgba(0,0,0,0.45);
  z-index: 40;
  max-height: 200px;
  overflow-y: auto;
  margin: 0 12px 4px;
}
.mention-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text);
  transition: background 0.12s;
  text-align: left;
}
.mention-item:hover, .mention-item:focus { background: var(--teal-dim); color: var(--teal); }
.mention-av {
  width: 26px; height: 26px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-ui); font-size: 0.6rem; font-weight: 700;
  color: #fff; flex-shrink: 0;
}

.mention {
  color: var(--teal);
  font-weight: 700;
  background: var(--teal-dim);
  border-radius: 4px;
  padding: 0 3px;
  font-size: 0.9em;
}
.msg-wrapper.sent .mention {
  color: var(--bg);
  background: rgba(0,0,0,0.2);
}

.msg-react-btn { margin-top: 2px; }

@media (max-width: 640px) {
  .msg-actions { opacity: 1; }
  .msg-reply-btn, .msg-react-btn { opacity: 0.5; }
  .msg-wrapper:active .msg-reply-btn,
  .msg-wrapper:active .msg-react-btn { opacity: 1; }
}

.solo-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg3);
  border-top: 1px solid var(--border2);
  font-size: 0.68rem;
  color: var(--text2);
  letter-spacing: 0.5px;
  font-family: var(--font-mono);
  flex-shrink: 0;
  animation: fade-up 0.25s ease both;
}
.solo-hint strong {
  color: var(--teal);
  font-family: var(--font-mono);
  background: var(--teal-dim);
  border: 1px solid var(--teal-border);
  border-radius: 4px;
  padding: 1px 7px;
  cursor: pointer;
  transition: background 0.15s;
}
.solo-hint strong:hover { background: var(--teal-glow); }

.count-badge:empty { display: none; }

#waiting-screen {
  align-items: center;
  justify-content: center;
  background: var(--bg);
}
.waiting-bg {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 55% 50% at 50% 44%,
    rgba(78,205,196,0.07) 0%, transparent 70%);
  animation: pulse-bg 4s ease-in-out infinite;
}
.waiting-container {
  position: relative; z-index: 1;
  display: flex; flex-direction: column;
  align-items: center; gap: 14px;
  padding: 40px 28px;
  animation: fade-up 0.4s ease both;
}

.waiting-pulse-ring {
  position: absolute;
  width: 88px; height: 88px;
  border-radius: 50%;
  border: 2px solid var(--teal);
  opacity: 0;
  animation: waiting-ring 2.2s ease-out infinite;
}
@keyframes waiting-ring {
  0%   { transform: scale(0.85); opacity: 0.5; }
  100% { transform: scale(1.9);  opacity: 0; }
}

.waiting-avatar-wrap { position: relative; z-index: 1; }
.waiting-avatar {
  width: 68px; height: 68px; border-radius: 50%;
  font-family: var(--font-ui); font-size: 1.2rem; font-weight: 700;
  color: #fff; display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--teal-border);
  box-shadow: 0 0 0 0 var(--teal-glow);
  animation: waiting-avatar-glow 2.2s ease-in-out infinite;
}
@keyframes waiting-avatar-glow {
  0%,100% { box-shadow: 0 0 0 0 rgba(78,205,196,0); }
  50%     { box-shadow: 0 0 0 8px rgba(78,205,196,0.12); }
}

.waiting-title {
  font-family: var(--font-ui); font-size: 1rem;
  font-weight: 700; letter-spacing: 3px; color: #fff;
  margin-top: 4px;
}
.waiting-name {
  font-size: 0.8rem; color: var(--teal);
  font-family: var(--font-mono); letter-spacing: 1px;
}
.waiting-room-row {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.65rem; color: var(--text2); letter-spacing: 1px;
}
.waiting-room-code {
  font-family: var(--font-mono); color: var(--teal);
  background: var(--teal-dim); border: 1px solid var(--teal-border);
  padding: 2px 9px; border-radius: 100px; font-size: 0.62rem;
}
.waiting-hint {
  font-size: 0.72rem; color: var(--text2);
  text-align: center; line-height: 1.7;
  max-width: 260px; font-family: var(--font-mono);
}
.waiting-dots {
  display: flex; gap: 8px; margin: 4px 0;
}
.waiting-dots span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal); opacity: 0.35;
  animation: dot-bounce 1.3s ease-in-out infinite;
}
.waiting-dots span:nth-child(2) { animation-delay: 0.2s; }
.waiting-dots span:nth-child(3) { animation-delay: 0.4s; }

.btn-waiting-cancel {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--r);
  background: transparent; border: 1px solid var(--border);
  color: var(--text2); font-family: var(--font-ui);
  font-size: 0.68rem; font-weight: 600; letter-spacing: 2px;
  margin-top: 8px; transition: all 0.2s;
}
.btn-waiting-cancel:hover { border-color: var(--danger); color: var(--danger); }

.admin-badge {
  display: flex; align-items: center; gap: 5px;
  font-family: var(--font-ui); font-size: 0.55rem;
  font-weight: 700; letter-spacing: 2px; color: #0d1a1a;
  background: var(--teal);
  padding: 3px 8px; border-radius: 100px;
  flex-shrink: 0;
  box-shadow: 0 0 10px rgba(78,205,196,0.35);
}

.admin-crown {
  color: var(--teal); font-size: 0.75em;
  margin-right: 2px; vertical-align: middle;
}

.member-promote-btn {
  width: 24px; height: 24px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; color: var(--text2);
  border: 1px solid transparent;
  transition: all 0.15s; opacity: 0;
}
.member-item:hover .member-promote-btn { opacity: 1; }
.member-promote-btn:hover {
  color: var(--teal); border-color: var(--teal);
  background: var(--teal-dim);
}

.pending-section-label {
  color: var(--texting) !important;
  margin-top: 8px;
}
.pending-badge {
  background: var(--texting) !important;
  color: var(--bg) !important;
}
.pending-item {
  border: 1px solid rgba(252,196,25,0.15);
  border-radius: var(--r);
  background: rgba(252,196,25,0.04);
}

.pending-actions {
  display: flex; gap: 6px; flex-shrink: 0;
}
.pending-approve-btn,
.pending-decline-btn {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; border: 1px solid var(--border);
  color: var(--text2); transition: all 0.15s;
}
.pending-approve-btn:hover {
  background: rgba(81,207,102,0.15);
  border-color: var(--online); color: var(--online);
}
.pending-decline-btn:hover {
  background: rgba(255,107,107,0.12);
  border-color: var(--danger); color: var(--danger);
}

.hamburger-btn.has-pending {
  position: relative;
}
.hamburger-btn.has-pending::after {
  content: '';
  position: absolute; top: 5px; right: 5px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--texting);
  box-shadow: 0 0 6px var(--texting);
  animation: dot-bounce 1.4s ease-in-out infinite;
}

@media (max-width: 640px) {
  .member-promote-btn { opacity: 0.5; }
  .waiting-container  { padding: 32px 20px; }
}

.msg-sig-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px; height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
  transition: opacity 0.2s;
}
.msg-sig-badge.verified {
  color: var(--teal);
  opacity: 0.75;
}
.msg-sig-badge.verified:hover { opacity: 1; }
.msg-sig-badge.failed {
  color: var(--texting);
  opacity: 0.85;
}

.msg-wrapper.sent .msg-sig-badge.verified { color: rgba(13,26,26,0.6); }

.mic-btn:hover { color: var(--teal); border-color: var(--teal); background: var(--teal-dim); }

  50%      { box-shadow: 0 0 0 8px rgba(255,107,107,0.08); }
}

.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 18px;
  width: 100%; max-width: 360px;
  max-height: 88vh; overflow-y: auto;
  animation: modal-in 0.22s ease both;
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 {
  font-family: var(--font-ui);
  font-size: 0.78rem; font-weight: 800;
  letter-spacing: 5px; color: var(--teal);
}
.modal-body {
  padding: 14px 18px 20px;
  display: flex; flex-direction: column; gap: 4px;
}

.setting-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border2);
}
.setting-item:last-of-type { border-bottom: none; }
.setting-label-group {
  display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0;
}
.setting-item > label {
  font-family: var(--font-ui);
  font-size: 0.68rem; font-weight: 700;
  letter-spacing: 2px; color: var(--text);
}
.setting-sublabel {
  font-family: var(--font-mono);
  font-size: 0.6rem; color: var(--text2);
  letter-spacing: 0.3px; line-height: 1.5;
}
.setting-value {
  font-family: var(--font-mono);
  font-size: 0.65rem; color: var(--text2);
  letter-spacing: 0.5px;
}
.setting-value.teal { color: var(--teal); }

.setting-divider {
  height: 1px;
  background: var(--border);
  margin: 6px 0;
}

.msg-bubble {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.6;
  letter-spacing: 0.1px;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.msg-sender {
  font-family: var(--font-ui);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  margin-bottom: 4px;
}

.msg-system span {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 1px;
  color: var(--text2);
  background: var(--bg2);
  border: 1px solid var(--border2);
  padding: 3px 16px;
  border-radius: 100px;
}

.msg-time-sm {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text2);
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.msg-wrapper.sent .msg-time-sm { color: rgba(13,26,26,0.55); }

.rq-sender {
  font-family: var(--font-ui);
  font-size: 0.62rem; font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 3px;
}
.rq-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.45;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  opacity: 0.85;
}

.mention {
  font-family: var(--font-ui);
  font-size: 0.82em;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.msg-edited {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.3px;
  opacity: 0.6;
  font-style: italic;
}

.toast-title {
  font-family: var(--font-ui);
  font-size: 0.74rem; font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
  line-height: 1.3;
}
.toast-msg {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--text2);
  margin-top: 2px;
  line-height: 1.4;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.input-wrap input {
  font-size: 0.88rem;
  letter-spacing: 0.3px;
  color: var(--text);
}
.input-wrap input::placeholder { font-size: 0.82rem; }

.msg-input-wrap textarea {
  font-size: 0.88rem;
  line-height: 1.55;
  letter-spacing: 0.1px;
}
.msg-input-wrap textarea::placeholder {
  font-size: 0.78rem;
  letter-spacing: 0.3px;
}

.welcome-sub {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  line-height: 1.75;
  color: var(--text2);
  letter-spacing: 0.2px;
}
.enc-note {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 1.5px;
  color: var(--text3);
}

.chat-name {
  font-family: var(--font-ui);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.chat-status {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text2);
  letter-spacing: 0.5px;
  margin-top: 1px;
}

.member-name {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  letter-spacing: 0.2px;
}
.member-activity {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text2);
  letter-spacing: 0.5px;
  margin-top: 2px;
}

.typing-text {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-style: italic;
  color: var(--text2);
  letter-spacing: 0.3px;
}

.reaction-count {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  font-weight: 700;
}

.ctx-item {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.8px;
}

@media (max-width: 640px) {
  .msg-bubble       { font-size: 0.9rem; line-height: 1.6; }
  .msg-sender       { font-size: 0.64rem; }
  .msg-time-sm      { font-size: 0.6rem; }
  .chat-name        { font-size: 0.82rem; }
  .member-name      { font-size: 0.8rem; }
  .toast-title      { font-size: 0.76rem; }
  .toast-msg        { font-size: 0.66rem; }
}

.send-btn.has-input {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--bg);
  box-shadow: 0 2px 14px rgba(78,205,196,0.35);
}
.send-btn.has-input:hover { background: #3bbfb6; transform: scale(1.06); }
.send-btn.has-input:active { transform: scale(0.94); }

  50%      { box-shadow: 0 0 0 9px rgba(255,107,107,0.06); }
}

.send-btn {
  transition: background 0.2s var(--ease-out),
              border-color 0.2s var(--ease-out),
              color 0.2s var(--ease-out),
              transform 0.15s var(--ease-spring),
              box-shadow 0.2s var(--ease-out);
}

.send-btn.has-input 
.send-btn.has-input 

.send-btn.recording 
.send-btn.recording 

.send-btn.recording 

:root {
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:    cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast:    150ms;
  --dur-med:     240ms;
  --dur-slow:    360ms;
}

.screen {
  transition:
    opacity   0.48s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.48s cubic-bezier(0.22, 1, 0.36, 1),
    filter    0.38s ease;
}
.screen:not(.active) { transform: scale(0.97) translateY(14px); }
.screen.active       { transform: scale(1) translateY(0); }

.join-tab-panel.active {
  animation: tab-in var(--dur-med) var(--ease-out) both;
}
@keyframes tab-in {
  from { opacity: 0; transform: translateX(10px) scale(0.98); filter: blur(3px); }
  to   { opacity: 1; transform: none; filter: blur(0); }
}

.join-tab-btn {
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.join-tab-btn:active { transform: scale(0.96); }
.join-tab-btn.active { transform: scale(1); }

.btn-join {
  transition: transform var(--dur-fast) var(--ease-spring),
              box-shadow var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}
.btn-join:not(:disabled):active { transform: scale(0.96); }

.input-wrap {
  transition: border-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}

.input-wrap:focus-within {
  box-shadow: 0 0 0 3px var(--teal-glow),
              0 1px 8px rgba(78,205,196,0.1);
}

.msg-wrapper {
  animation: msg-in var(--dur-med) var(--ease-out) both;
}
@keyframes msg-in {
  from { opacity: 0; transform: translateY(10px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.msg-wrapper.sent {
  animation-name: msg-in-sent;
}
@keyframes msg-in-sent {
  from { opacity: 0; transform: translateY(10px) scale(0.97) translateX(6px); }
  to   { opacity: 1; transform: translateY(0) scale(1) translateX(0); }
}

.msg-bubble {
  transition: background var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}
.editing-highlight {
  outline: 2px solid var(--teal) !important;
  outline-offset: 3px;
  box-shadow: 0 0 0 5px var(--teal-glow) !important;
  transition: outline var(--dur-fast) var(--ease-spring),
              box-shadow var(--dur-fast) var(--ease-spring) !important;
}

.msg-system {
  animation: sys-in var(--dur-slow) var(--ease-out) both;
}
@keyframes sys-in {
  from { opacity: 0; transform: scaleX(0.85); }
  to   { opacity: 1; transform: scaleX(1); }
}

.reaction-chip {
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.reaction-chip:active { transform: scale(0.88); }
.reaction-chip.mine   { transform: scale(1); }

.reaction-picker {
  transition: opacity var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.reaction-opt {
  transition: transform var(--dur-fast) var(--ease-spring),
              background var(--dur-fast) var(--ease-out);
}
.reaction-opt:active { transform: scale(0.8); }

.member-item {
  transition: background var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
  animation: member-in var(--dur-med) var(--ease-out) both;
}
@keyframes member-in {
  from { opacity: 0; transform: translateX(-12px); }
  to   { opacity: 1; transform: translateX(0); }
}

.reply-bar {
  transition: opacity var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out),
              max-height var(--dur-med) var(--ease-out);
}

.typing-indicator {
  transition: opacity var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}
.typing-indicator:not(.visible) { transform: translateY(4px); opacity: 0; }
.typing-indicator.visible       { transform: translateY(0);   opacity: 1; }

.msg-context-menu {
  transition: opacity var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.msg-context-menu.visible {
  animation: ctx-pop var(--dur-med) var(--ease-spring) both;
}
@keyframes ctx-pop {
  from { opacity: 0; transform: scale(0.88) translateY(4px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.ctx-item {
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.ctx-item:active { transform: scale(0.97); }

.toast {
  animation: toast-slide var(--dur-med) var(--ease-spring) both;
}
@keyframes toast-slide {
  from { opacity: 0; transform: translateX(20px) scale(0.95); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

.modal {
  animation: modal-in var(--dur-med) var(--ease-spring) both;
}
@keyframes modal-in {
  from { opacity: 0; transform: scale(0.93) translateY(14px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.setting-item {
  transition: background var(--dur-fast) var(--ease-out);
}
.setting-item:active { background: var(--teal-dim); }

.toggle {
  transition: background var(--dur-med) var(--ease-out),
              border-color var(--dur-med) var(--ease-out);
}
.toggle::after {
  transition: transform var(--dur-med) var(--ease-spring),
              background var(--dur-med) var(--ease-out);
}
.toggle-wrap input:checked + .toggle::after {
  transform: translateX(20px);
}

.waiting-pulse-ring {
  animation: waiting-ring 2.4s var(--ease-out) infinite;
}
@keyframes waiting-ring {
  0%   { transform: scale(0.85); opacity: 0.6; }
  100% { transform: scale(2.1);  opacity: 0; }
}

#sidebar {
  transition: transform 0.3s var(--ease-in-out),
              box-shadow 0.3s var(--ease-in-out);
}

.sidebar-footer .btn-logout {
  transition: border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.btn-logout:active { transform: scale(0.97); }

.pending-approve-btn,
.pending-decline-btn {
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.pending-approve-btn:active,
.pending-decline-btn:active { transform: scale(0.85); }

.admin-badge {
  animation: badge-pop 0.4s var(--ease-spring) both;
}
@keyframes badge-pop {
  from { opacity: 0; transform: scale(0.6); }
  to   { opacity: 1; transform: scale(1); }
}

.icon-btn {
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.icon-btn:active { transform: scale(0.88); }

.attach-btn { transition: color var(--dur-fast) var(--ease-out),
                           transform var(--dur-fast) var(--ease-spring); }
.attach-btn:active { transform: scale(0.88); }

.reply-quote {
  transition: opacity var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.reply-quote:active { transform: scale(0.98); opacity: 0.75; }

.msg-reply-btn,
.msg-react-btn {
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring),
              opacity var(--dur-fast) var(--ease-out);
}
.msg-reply-btn:active,
.msg-react-btn:active { transform: scale(0.8); }



.msg-file {
  transition: border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.msg-file:active { transform: scale(0.98); }

.media-viewer {
  animation: viewer-in var(--dur-med) var(--ease-out) both;
}
@keyframes viewer-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.media-viewer img,
.media-viewer video {
  animation: viewer-content-in var(--dur-med) var(--ease-spring) both;
}
@keyframes viewer-content-in {
  from { transform: scale(0.9); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.mention-item {
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.mention-item:active { transform: scale(0.97); }

.mention-dropdown {
  animation: dropdown-in var(--dur-fast) var(--ease-spring) both;
}
@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.search-bar {
  transition: opacity var(--dur-med) var(--ease-out),
              transform var(--dur-med) var(--ease-out),
              max-height var(--dur-med) var(--ease-out);
}

.room-code-pill {
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-spring);
}
.room-code-pill:active { transform: scale(0.94); }

.count-badge {
  transition: transform var(--dur-fast) var(--ease-spring),
              background var(--dur-fast) var(--ease-out);
}

.pending-badge {
  animation: badge-pop 0.3s var(--ease-spring) both;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── INLINE ACTION STRIP (long-press) ───────────────── */
.msg-action-strip {
  position: absolute;
  bottom: calc(100% + 10px);
  z-index: 80;
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 6px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.7),
              0 4px 16px rgba(0,0,0,0.4),
              0 0 0 1px rgba(78,205,196,0.06);
  min-width: 240px;
  max-width: 290px;
  opacity: 0;
  transform: scale(0.86) translateY(12px);
  transform-origin: bottom center;
  transition: opacity 0.18s ease,
              transform 0.22s var(--ease-spring, cubic-bezier(0.34,1.56,0.64,1));
  pointer-events: none;
}
.msg-action-strip.visible {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: all;
}
.msg-wrapper.sent .msg-action-strip {
  right: 0; left: auto;
  transform-origin: bottom right;
}
.msg-wrapper.received .msg-action-strip {
  left: 0; right: auto;
  transform-origin: bottom left;
}

.strip-emojis {
  display: flex;
  gap: 0;
  padding: 4px 4px 6px;
  justify-content: space-between;
}
.strip-emoji {
  font-size: 1.45rem;
  padding: 7px 6px;
  border-radius: 12px;
  line-height: 1;
  transition: transform 0.14s var(--ease-spring, cubic-bezier(0.34,1.56,0.64,1)),
              background 0.1s ease;
  flex: 1;
  text-align: center;
}
.strip-emoji:hover  { background: var(--teal-dim); }
.strip-emoji:active { transform: scale(1.35); }

.strip-divider {
  height: 1px;
  background: var(--border);
  margin: 2px 6px 4px;
}

.strip-actions {
  display: flex;
  gap: 2px;
  padding: 0 0 2px;
}
.strip-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 1;
  padding: 10px 6px 8px;
  border-radius: 12px;
  font-family: var(--font-ui);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--text);
  transition: background 0.1s ease, color 0.1s ease,
              transform 0.12s var(--ease-spring, cubic-bezier(0.34,1.56,0.64,1));
}
.strip-action svg { flex-shrink: 0; }
.strip-action span { line-height: 1.2; }
.strip-action small {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  color: var(--teal);
  display: block;
  margin-top: 1px;
}
.strip-action:hover  { background: var(--teal-dim); color: var(--teal); }
.strip-action:active { transform: scale(0.89); }

.strip-delete-row {
  margin-top: 4px;
  border-top: 1px solid rgba(255,107,107,0.15);
  padding-top: 4px;
}
.strip-action.danger {
  width: 100%;
  flex-direction: row;
  justify-content: center;
  gap: 9px;
  padding: 11px 14px;
  border-radius: 12px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--danger);
  background: rgba(255,107,107,0.07);
  border: 1px solid rgba(255,107,107,0.18);
}
.strip-action.danger:hover  { background: rgba(255,107,107,0.16); }
.strip-action.danger:active { transform: scale(0.96); }

.scroll-fab {
  position: sticky;
  bottom: 16px;
  left: calc(100% - 56px);
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--teal);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  opacity: 0;
  transform: translateY(8px) scale(0.85);
  transition: opacity 0.22s var(--ease-out),
              transform 0.22s var(--ease-spring);
  z-index: 5;
  flex-shrink: 0;
  align-self: flex-end;
  margin-bottom: 8px;
  margin-right: 8px;
}
.scroll-fab.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.scroll-fab:hover { background: var(--teal-dim); transform: scale(1.08); }
.scroll-fab:active { transform: scale(0.9); }

.scroll-fab-badge {
  position: absolute;
  top: -4px; right: -4px;
  min-width: 16px; height: 16px;
  border-radius: 100px;
  background: var(--danger);
  color: #fff;
  font-family: var(--font-ui);
  font-size: 0.52rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  padding: 0 3px;
  border: 2px solid var(--bg2);
}

.btn-rotate-key {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  border-radius: var(--r);
  background: transparent;
  border: 1px solid var(--teal-border);
  color: var(--teal);
  font-family: var(--font-ui);
  font-size: 0.6rem; font-weight: 700;
  letter-spacing: 2px;
  flex-shrink: 0;
  transition: background 0.15s, transform 0.12s var(--ease-spring);
}
.btn-rotate-key:hover { background: var(--teal-dim); }
.btn-rotate-key:active { transform: scale(0.93); }

.room-config-box {
  background: var(--bg2);
  border: 1px solid var(--teal-border);
  border-radius: 18px;
  padding: 28px 24px;
  width: 100%; max-width: 340px;
  display: flex; flex-direction: column; gap: 16px;
  animation: modal-in 0.22s var(--ease-spring) both;
}
.room-config-header {
  display: flex; align-items: center; gap: 14px;
}
.room-config-title {
  font-family: var(--font-ui); font-size: 0.82rem;
  font-weight: 800; letter-spacing: 3px; color: #fff;
}
.room-config-code {
  font-family: var(--font-mono); font-size: 0.68rem;
  color: var(--teal); margin-top: 3px; letter-spacing: 1px;
}
.room-config-desc {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text2); line-height: 1.6;
}
.room-config-option {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: var(--r2);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.room-config-option:hover { border-color: var(--teal-border); background: var(--teal-dim); }
.rco-radio {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0; margin-top: 1px;
  transition: border-color 0.15s, background 0.15s;
}
.rco-radio.selected {
  border-color: var(--teal);
  background: var(--teal);
  box-shadow: 0 0 0 3px var(--teal-dim);
}
.rco-title {
  font-family: var(--font-ui); font-size: 0.74rem;
  font-weight: 700; color: var(--text); letter-spacing: 0.5px;
}
.rco-sub {
  font-family: var(--font-mono); font-size: 0.62rem;
  color: var(--text2); margin-top: 3px; line-height: 1.5;
}
.room-config-btn {
  width: 100%; padding: 13px;
  background: var(--teal); border: none;
  border-radius: var(--r);
  color: var(--bg); font-family: var(--font-ui);
  font-size: 0.72rem; font-weight: 800;
  letter-spacing: 3px;
  transition: background 0.15s, transform 0.12s var(--ease-spring);
}
.room-config-btn:hover { background: #3bbfb6; }
.room-config-btn:active { transform: scale(0.97); }

#invite-screen {
  align-items: center;
  justify-content: center;
  background: var(--bg);
  overflow-y: auto;
}
.invite-bg {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 60% 55% at 50% 40%,
    rgba(78,205,196,0.09) 0%, transparent 70%);
}
.invite-container {
  position: relative; z-index: 1;
  display: flex; flex-direction: column;
  align-items: center; gap: 14px;
  padding: 48px 28px 40px;
  width: 100%; max-width: 360px;
  animation: fade-up 0.35s ease both;
}
.invite-logo {
  margin-bottom: 4px;
  filter: drop-shadow(0 0 18px rgba(78,205,196,0.22));
}
.invite-label {
  font-family: var(--font-ui);
  font-size: 0.56rem; font-weight: 700;
  letter-spacing: 4px; color: var(--teal);
}
.invite-title {
  font-family: var(--font-ui);
  font-size: 1.3rem; font-weight: 800;
  letter-spacing: 1px; color: #fff;
  text-align: center; line-height: 1.35;
}
.invite-hint {
  font-family: var(--font-mono);
  font-size: 0.69rem; color: var(--text2);
  text-align: center; line-height: 1.7;
  max-width: 260px;
}
.invite-input-wrap {
  width: 100%; position: relative;
  display: flex; align-items: center;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--r2);
  padding: 0 12px;
  transition: border-color 0.15s, box-shadow 0.15s;
  margin-top: 6px;
}
.invite-input-wrap:focus-within {
  border-color: var(--teal-border);
  box-shadow: 0 0 0 3px var(--teal-glow);
}
.invite-input-wrap input {
  flex: 1;
  padding: 14px 8px 14px 0;
  background: transparent; border: none; outline: none;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  letter-spacing: 0.5px;
}
.invite-input-wrap input::placeholder { color: var(--text2); }
.invite-vis-btn {
  color: var(--text2); padding: 4px;
  border-radius: 6px; flex-shrink: 0;
  transition: color 0.15s;
}
.invite-vis-btn:hover { color: var(--teal); }
.invite-error {
  font-family: var(--font-mono);
  font-size: 0.68rem; color: var(--danger);
  min-height: 16px; text-align: center;
  letter-spacing: 0.3px;
}
.btn-invite-join {
  width: 100%; padding: 15px;
  background: var(--teal); border: none;
  border-radius: var(--r2);
  color: var(--bg);
  font-family: var(--font-ui); font-size: 0.76rem;
  font-weight: 800; letter-spacing: 3px;
  transition: background 0.15s, transform 0.12s var(--ease-spring),
              opacity 0.15s;
  margin-top: 4px;
}
.btn-invite-join:not(:disabled):hover { background: #3bbfb6; }
.btn-invite-join:not(:disabled):active { transform: scale(0.97); }
.btn-invite-join:disabled {
  opacity: 0.35; cursor: not-allowed;
}
.btn-invite-back {
  font-family: var(--font-mono);
  font-size: 0.66rem; color: var(--text2);
  padding: 6px 12px; border-radius: var(--r);
  background: transparent; border: none;
  transition: color 0.15s;
  margin-top: 2px;
}
.btn-invite-back:hover { color: var(--teal); }

html, body, #app, .messages-area, .msg-bubble, .msg-inner, .sidebar {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

input, textarea {
  -webkit-user-select: text;
  -moz-user-select: text;
  user-select: text;
}

@media print {
  body { display: none !important; }
}

/* ══════════════════════════════════════════════════
   NEXUS MORPH SYSTEM — staggered element morphs,
   button micro-interactions, input focus morphs
══════════════════════════════════════════════════ */

/* ── Core morph keyframe ── */
@keyframes nx-morph-in {
  0%   { opacity: 0; transform: translateY(20px) scale(0.94); filter: blur(6px); }
  55%  { opacity: 1; filter: blur(0); }
  100% { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}

/* ── Staggered element class ── */
.nx-anim { opacity: 0; }
.screen.active .nx-anim {
  animation: nx-morph-in 0.58s cubic-bezier(0.22, 1, 0.36, 1) var(--nx-d, 0s) both;
}

/* ── Input focus morph ── */
.input-wrap {
  transition: border-color 0.22s ease, box-shadow 0.22s ease,
              transform 0.25s cubic-bezier(0.22, 1, 0.36, 1) !important;
}
.input-wrap:focus-within {
  transform: scale(1.015) !important;
}

/* ── Button morph interactions ── */
.btn-join {
  transition: transform 0.25s cubic-bezier(0.22,1,0.36,1),
              box-shadow 0.22s ease !important;
}
.btn-join:hover:not(:disabled) {
  transform: translateY(-2px) scale(1.014) !important;
}
.btn-join:active:not(:disabled) {
  transform: scale(0.96) !important;
  transition-duration: 0.08s !important;
}

/* ── Tab button morph ── */
.join-tab-btn {
  transition: color 0.2s ease, background 0.2s ease,
              transform 0.22s cubic-bezier(0.22,1,0.36,1),
              border-color 0.2s ease !important;
}
.join-tab-btn:hover:not(.active) { transform: scale(1.05) !important; }

/* ── Modal entrance morph ── */
.modal {
  animation: nx-morph-in 0.4s cubic-bezier(0.22, 1, 0.36, 1) both !important;
}

/* ── Join tab panel morph ── */
.join-tab-panel.active {
  animation: nx-tab-morph 0.38s cubic-bezier(0.22, 1, 0.36, 1) both !important;
}
@keyframes nx-tab-morph {
  from { opacity: 0; transform: translateX(12px) scale(0.97); filter: blur(4px); }
  to   { opacity: 1; transform: translateX(0) scale(1); filter: blur(0); }
}

/* ── Icon button micro-morph ── */
.icon-btn {
  transition: color 0.18s ease, background 0.18s ease,
              transform 0.2s cubic-bezier(0.22,1,0.36,1) !important;
}
.icon-btn:hover { transform: scale(1.1) !important; }
.icon-btn:active { transform: scale(0.9) !important; transition-duration: 0.07s !important; }

/* ── Waiting screen pulse morph ── */
.waiting-avatar-wrap {
  animation: nx-morph-in 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.15s both;
}
.waiting-title {
  animation: nx-morph-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) 0.22s both;
  opacity: 0;
}
.waiting-name {
  animation: nx-morph-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) 0.28s both;
  opacity: 0;
}
.waiting-room-row {
  animation: nx-morph-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) 0.33s both;
  opacity: 0;
}
.waiting-hint {
  animation: nx-morph-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) 0.38s both;
  opacity: 0;
}
.waiting-dots {
  animation: nx-morph-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) 0.44s both;
  opacity: 0;
}
.btn-waiting-cancel {
  animation: nx-morph-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) 0.5s both;
  opacity: 0;
}

/* ── Invite screen morph ── */
.invite-logo   { animation: nx-morph-in 0.55s cubic-bezier(0.22,1,0.36,1) 0.05s both; opacity: 0; }
.invite-label  { animation: nx-morph-in 0.55s cubic-bezier(0.22,1,0.36,1) 0.12s both; opacity: 0; }
.invite-title  { animation: nx-morph-in 0.55s cubic-bezier(0.22,1,0.36,1) 0.18s both; opacity: 0; }
.invite-hint   { animation: nx-morph-in 0.55s cubic-bezier(0.22,1,0.36,1) 0.24s both; opacity: 0; }
.invite-input-wrap { animation: nx-morph-in 0.55s cubic-bezier(0.22,1,0.36,1) 0.3s both; opacity: 0; }
.btn-invite-join   { animation: nx-morph-in 0.55s cubic-bezier(0.22,1,0.36,1) 0.36s both; opacity: 0; }
.btn-invite-back   { animation: nx-morph-in 0.55s cubic-bezier(0.22,1,0.36,1) 0.42s both; opacity: 0; }

/* ── Message area entrance ── */
.room-welcome {
  animation: nx-morph-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.3s both;
}

/* ── Reply bar morph ── */
.reply-bar[style*="flex"], .reply-bar:not([style*="none"]) {
  animation: nx-morph-in 0.28s cubic-bezier(0.22,1,0.36,1) both;
}

/* ── Solo hint morph ── */
.solo-hint {
  animation: nx-morph-in 0.5s cubic-bezier(0.22,1,0.36,1) 0.6s both;
  opacity: 0;
}

/* ── Toast morph ── */
.toast {
  animation: nx-toast-in 0.38s cubic-bezier(0.22,1,0.36,1) both !important;
}
@keyframes nx-toast-in {
  from { opacity: 0; transform: translateX(28px) scale(0.9); filter: blur(4px); }
  to   { opacity: 1; transform: translateX(0) scale(1); filter: blur(0); }
}

/* ── Security badge ── */
.security-badge {
  transition: opacity 0.3s ease, transform 0.3s ease !important;
}

/* ── load-earlier-btn (Issue 9: pagination) ──────────────────────────────── */
.load-earlier-btn {
  display: block;
  width: calc(100% - 32px);
  margin: 8px 16px 4px;
  padding: 8px 0;
  background: transparent;
  border: 1px solid var(--border, #1e3a3a);
  border-radius: var(--r, 8px);
  color: var(--text2, #6a9896);
  font-family: var(--font-ui, 'Syne', sans-serif);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 2px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.load-earlier-btn:hover {
  background: rgba(78,205,196,0.07);
  color: var(--teal, #4ecdc4);
}
.load-earlier-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ════════════════════════════════════════════════════════════════
   SETTINGS GEAR BUTTON
   Smooth rotation on hover — makes it unmistakably a settings icon
   ════════════════════════════════════════════════════════════════ */
.settings-gear-btn {
  position: relative;
  transition: color 0.2s, background 0.2s;
}
.settings-gear-btn svg {
  transition: transform 0.55s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform-origin: center;
}
.settings-gear-btn:hover svg {
  transform: rotate(72deg);
  color: var(--teal);
}
.settings-gear-btn:active svg {
  transform: rotate(120deg);
  transition-duration: 0.18s;
}

/* ════════════════════════════════════════════════════════════════
   SMART ERROR MESSAGE
   Styled error box with shake — replaces plain text element
   ════════════════════════════════════════════════════════════════ */
#join-error,
#invite-error {
  min-height: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--danger);
  letter-spacing: 0.3px;
  line-height: 1.5;
  padding: 0;
  transition: all 0.2s;
  word-break: break-word;
}
#join-error:not(:empty),
#invite-error:not(:empty) {
  padding: 10px 14px;
  background: rgba(255, 107, 107, 0.07);
  border: 1px solid rgba(255, 107, 107, 0.22);
  border-radius: var(--r);
  margin-top: 2px;
}

/* ════════════════════════════════════════════════════════════════
   LIVE COUNTDOWN BLOCK
   Shown after rate limit / wrong-code lockout
   ════════════════════════════════════════════════════════════════ */
.nx-countdown-block {
  margin-top: 8px;
  border-radius: var(--r);
  background: rgba(255, 107, 107, 0.07);
  border: 1px solid rgba(255, 107, 107, 0.22);
  animation: nx-morph-in 0.3s cubic-bezier(0.22, 1, 0.36, 1) both;
  overflow: hidden;
}
.nxcd-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
}
.nxcd-ring {
  flex-shrink: 0;
  /* Smooth the SVG stroke animation */
  filter: drop-shadow(0 0 4px rgba(255, 107, 107, 0.4));
}
.nxcd-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.nxcd-label {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--danger);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.nxcd-timer {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text2);
  letter-spacing: 0;
}
.nxcd-timer strong {
  color: var(--danger);
  font-weight: 700;
}

/* Progress bar that depletes across the bottom of the countdown block */
.nx-countdown-block::after {
  content: '';
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--danger) var(--cd-pct, 100%), transparent var(--cd-pct, 100%));
  transition: background 0.48s linear;
}

/* ════════════════════════════════════════════════════════════════
   WRONG CODE / ATTEMPTS REMAINING — inline feedback pill
   ════════════════════════════════════════════════════════════════ */
.attempts-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--texting);
  background: rgba(252, 196, 25, 0.08);
  border: 1px solid rgba(252, 196, 25, 0.2);
  border-radius: 100px;
  padding: 3px 10px;
  margin-top: 4px;
  letter-spacing: 0.5px;
  animation: nx-morph-in 0.2s ease both;
}
.attempts-pill svg { flex-shrink: 0; }

/* ── Settings gear button ─────────────────────────────────────────────────── */
.settings-gear-btn svg {
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.settings-gear-btn:hover svg,
.settings-gear-btn:focus svg {
  transform: rotate(60deg);
}

/* ── Smart error states ───────────────────────────────────────────────────── */
.error-msg {
  transition: color 0.2s;
}
.error-msg.error-urgent {
  color: #ff4444;
  font-weight: 700;
  animation: shake .3s ease, urgent-pulse 1s ease infinite alternate;
}
@keyframes urgent-pulse {
  from { opacity: 1; }
  to   { opacity: 0.65; }
}

/* ── Countdown bar (replaces inline styles) ──────────────────────────────── */
.nx-countdown-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  padding: 10px 14px;
  background: rgba(255, 80, 80, 0.07);
  border: 1px solid rgba(255, 80, 80, 0.22);
  border-radius: var(--r, 8px);
  position: relative;
  overflow: hidden;
  animation: nx-morph-in 0.25s ease both;
}
.nx-countdown-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: var(--p, 0%);
  background: var(--c, var(--danger));
  transition: width 0.25s linear, background 0.4s;
}

/* ── Error icon colours by type (used by showSmartError) ─────────────────── */
.error-msg[data-type="network"]    { color: #f97316; }
.error-msg[data-type="quota"]      { color: #eab308; }
.error-msg[data-type="permission"] { color: #ef4444; }
.error-msg[data-type="auth"]       { color: #a855f7; }


/* ════════════════════════════════════════════════════════════════
   MIUT LOGO COMPONENTS
   ════════════════════════════════════════════════════════════════ */

/* Splash screen: large animated logo */
.miut-logo-splash {
  filter: drop-shadow(0 0 12px rgba(78, 205, 196, 0.35));
  animation: miut-logo-breathe 3s ease-in-out infinite;
}
@keyframes miut-logo-breathe {
  0%, 100% { filter: drop-shadow(0 0 8px rgba(78, 205, 196, 0.3)); }
  50%       { filter: drop-shadow(0 0 22px rgba(78, 205, 196, 0.7)); }
}

/* Small logo in sidebar / headers */
.miut-logo-sm {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

/* Hover pulse on logos in clickable areas */
.logo-sm:hover .miut-logo-sm,
.invite-logo:hover svg {
  filter: drop-shadow(0 0 6px rgba(78, 205, 196, 0.5));
}

/* Welcome screen icon */
.welcome-icon svg {
  filter: drop-shadow(0 0 16px rgba(78, 205, 196, 0.2));
}

/* ════════════════════════════════════════════════════════════════
   UX IMPROVEMENTS
   ════════════════════════════════════════════════════════════════ */

/* Code hint — warning style for the "write it down" message */
.code-hint {
  font-size: 0.68rem;
  color: var(--text2);
  letter-spacing: 0.3px;
  line-height: 1.5;
  margin-top: 6px;
}
.code-hint:has-text("⚠") {
  color: var(--texting);
}

/* Invite back button — make it look clearly secondary */
.btn-invite-back {
  background: transparent;
  border: none;
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 1px;
  padding: 8px;
  cursor: pointer;
  transition: color 0.15s;
  margin-top: 4px;
}
.btn-invite-back:hover { color: var(--text); }

/* Waiting screen hint — improved readability */
.waiting-hint {
  font-size: 0.74rem;
  color: var(--text2);
  text-align: center;
  line-height: 1.8;
  max-width: 260px;
  margin: 0 auto;
}

/* ═══════════════════════════════════════════════════════════════
   MIUT — ANDROID 16 DESIGN SYSTEM ADDITIONS
   ═══════════════════════════════════════════════════════════════ */

/* ── Splash screen — Android 16 adaptive icon style ─────────── */
#splash { background: var(--bg); }
.splash-bg { display: none; }
.splash-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 32px;
  height: 100%;
}
.splash-logo {
  width: 100px;
  height: 100px;
  background: rgba(78,205,196,0.08);
  border-radius: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 0 0 1px var(--teal-border), 0 8px 32px rgba(78,205,196,0.15);
  animation: miut-splash-in 0.5s cubic-bezier(0.34,1.56,0.64,1) both;
}
@keyframes miut-splash-in {
  from { transform: scale(0.7); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}
.splash-icon-svg {
  width: 60px; height: 52px;
  filter: drop-shadow(0 0 8px rgba(78,205,196,0.4));
}
.splash-title {
  font-family: var(--font-ui);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
  margin-bottom: 6px;
}
.splash-sub {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--text2);
  letter-spacing: 0.3px;
  margin-bottom: 40px;
}

/* Android 16-style linear progress indicator */
.splash-progress {
  width: 160px;
  height: 4px;
  background: rgba(78,205,196,0.15);
  border-radius: 2px;
  overflow: hidden;
}
.splash-progress-bar {
  height: 100%;
  background: var(--teal);
  border-radius: 2px;
  animation: miut-progress 1.8s ease-in-out infinite;
  transform-origin: left;
}
@keyframes miut-progress {
  0%   { transform: translateX(-100%) scaleX(0.3); }
  50%  { transform: translateX(50%)   scaleX(0.6); }
  100% { transform: translateX(400%)  scaleX(0.3); }
}

/* ── Join screen — clean M3 card style ─────────────────────── */
.join-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}
.join-logo { flex-shrink: 0; }
.join-app-name {
  font-family: var(--font-ui);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
  line-height: 1.1;
}
.join-tagline {
  font-size: 0.74rem;
  color: var(--text2);
  margin-top: 2px;
}

/* Field labels — Inter, smaller */
.field-label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text2);
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}

/* Field hints */
.field-hint {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: var(--text2);
  line-height: 1.5;
  margin-top: 6px;
}

/* Info chip — Android chip style */
.info-chip {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(78,205,196,0.06);
  border: 1px solid var(--teal-border);
  border-radius: var(--r);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--text2);
  line-height: 1.5;
  margin-bottom: 14px;
}

/* Primary button — Android 16 filled style */
.btn-primary {
  width: 100%;
  padding: 14px 20px;
  background: var(--teal);
  border: none;
  border-radius: var(--r2);
  color: #0d1117;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.2px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.18s;
  box-shadow: 0 2px 8px rgba(78,205,196,0.25);
}
.btn-primary:hover { background: #5ddad1; box-shadow: 0 4px 16px rgba(78,205,196,0.35); }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn-primary.small { padding: 11px 20px; font-size: 0.8rem; }

/* Ghost button */
.btn-ghost {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: transparent;
  border: 1.5px solid var(--border);
  border-radius: var(--r2);
  color: var(--text2);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  width: 100%;
}
.btn-ghost:hover { border-color: var(--teal-border); color: var(--teal); }

.btn-ghost-sm {
  background: none; border: none;
  color: var(--text2); font-family: var(--font-ui);
  font-size: 0.74rem; cursor: pointer;
  padding: 8px; margin-top: 6px;
  transition: color 0.15s;
}
.btn-ghost-sm:hover { color: var(--text); }

/* Small teal button */
.btn-sm-teal {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px; background: rgba(78,205,196,0.12);
  border: 1px solid var(--teal-border); border-radius: var(--r);
  color: var(--teal); font-family: var(--font-ui);
  font-size: 0.72rem; font-weight: 600;
  cursor: pointer; transition: all 0.15s;
}
.btn-sm-teal:hover { background: rgba(78,205,196,0.2); }

/* Leave button */
.btn-leave {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 11px 16px;
  background: rgba(239,83,80,0.08);
  border: 1px solid rgba(239,83,80,0.2);
  border-radius: var(--r);
  color: var(--danger);
  font-family: var(--font-ui); font-size: 0.8rem; font-weight: 500;
  cursor: pointer; transition: all 0.15s;
}
.btn-leave:hover { background: rgba(239,83,80,0.14); }

/* Join tabs — M3 segmented control */
.join-tabs {
  display: flex; gap: 8px;
  padding: 4px; background: var(--surface);
  border-radius: var(--r2); margin-bottom: 20px;
}
.join-tab-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 12px;
  background: transparent; border: none; border-radius: 18px;
  color: var(--text2); font-family: var(--font-ui);
  font-size: 0.8rem; font-weight: 500;
  cursor: pointer; transition: all 0.2s;
}
.join-tab-btn.active {
  background: var(--surface2);
  color: var(--teal);
  box-shadow: var(--shadow-1);
}

/* Security row */
.security-row {
  display: flex; align-items: center; gap: 8px;
  justify-content: center;
  padding: 12px 0 0;
  font-family: var(--font-ui); font-size: 0.68rem;
  color: var(--text3); letter-spacing: 0.2px;
}

/* ── Sidebar brand area ─────────────────────────────────────── */
.sidebar-header {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--border2);
}
.sidebar-brand {
  display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0;
}
.sidebar-app-name {
  font-family: var(--font-ui); font-size: 1rem; font-weight: 700;
  color: var(--text); letter-spacing: -0.2px;
}

/* ── Chat header room icon ──────────────────────────────────── */
.chat-room-icon {
  width: 36px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(78,205,196,0.08);
  border-radius: 8px;
  flex-shrink: 0;
}
.chat-name {
  font-family: var(--font-ui); font-size: 0.88rem; font-weight: 600;
  color: var(--text); letter-spacing: 0;
}

/* ── Welcome screen ─────────────────────────────────────────── */
.welcome-icon {
  filter: drop-shadow(0 0 12px rgba(78,205,196,0.2));
  margin-bottom: 4px;
}
.welcome-title {
  font-family: var(--font-ui); font-size: 1rem; font-weight: 600;
  color: var(--text2); letter-spacing: 0; margin: 8px 0 6px;
}
.welcome-sub {
  font-family: var(--font-ui); font-size: 0.76rem; color: var(--text3);
  line-height: 1.6; max-width: 260px; text-align: center;
}

/* ── Settings modal ─────────────────────────────────────────── */
.modal-header h3 {
  font-family: var(--font-ui); font-size: 1rem; font-weight: 600;
  color: var(--text); letter-spacing: 0;
}
.setting-item label {
  font-family: var(--font-ui); font-size: 0.82rem; font-weight: 500;
  color: var(--text); letter-spacing: 0;
}
.setting-sublabel {
  font-family: var(--font-ui); font-size: 0.7rem; color: var(--text2);
}
.setting-value {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--text2);
}
.setting-value.teal { color: var(--teal); }

/* ── Gear icon spin on hover ─────────────────────────────────── */
.settings-gear-btn svg {
  transition: transform 0.5s cubic-bezier(0.34,1.56,0.64,1);
  transform-origin: center;
}
.settings-gear-btn:hover svg { transform: rotate(72deg); }
.settings-gear-btn:active svg { transform: rotate(120deg); transition-duration: 0.15s; }

/* ── Error message ──────────────────────────────────────────── */
#join-error, #invite-error {
  font-family: var(--font-ui); font-size: 0.76rem;
  color: var(--danger); line-height: 1.5;
  min-height: 0; transition: all 0.2s;
}
#join-error:not(:empty), #invite-error:not(:empty) {
  padding: 10px 14px;
  background: rgba(239,83,80,0.07);
  border: 1px solid rgba(239,83,80,0.2);
  border-radius: var(--r); margin-top: 4px;
}

/* ── Countdown block ────────────────────────────────────────── */
.nx-countdown-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; margin-top: 8px;
  background: rgba(239,83,80,0.07);
  border: 1px solid rgba(239,83,80,0.2);
  border-radius: var(--r);
  animation: nx-morph-in 0.25s ease both;
  position: relative; overflow: hidden;
}
.nx-countdown-progress {
  position: absolute; bottom: 0; left: 0;
  height: 2px;
  width: var(--p, 0%);
  background: var(--c, var(--danger));
  transition: width 0.24s linear, background 0.5s;
}

/* ── Load earlier button ────────────────────────────────────── */
.load-earlier-btn {
  display: block; width: calc(100% - 32px); margin: 8px 16px 4px;
  padding: 9px 0; background: transparent;
  border: 1px solid var(--border); border-radius: var(--r2);
  color: var(--text2); font-family: var(--font-ui); font-size: 0.76rem; font-weight: 500;
  cursor: pointer; transition: all 0.15s;
}
.load-earlier-btn:hover { border-color: var(--teal-border); color: var(--teal); }
.load-earlier-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Invite screen tweaks ───────────────────────────────────── */
.invite-eyebrow {
  font-family: var(--font-ui); font-size: 0.65rem; font-weight: 600;
  letter-spacing: 2px; color: var(--teal); margin-bottom: 8px;
}
.invite-title {
  font-family: var(--font-ui); font-size: 1.3rem; font-weight: 700;
  color: var(--text); letter-spacing: -0.2px;
  text-align: center; margin-bottom: 8px;
}
.invite-hint {
  font-family: var(--font-ui); font-size: 0.76rem;
  color: var(--text2); text-align: center; line-height: 1.5;
  margin-bottom: 20px;
}

/* ── Waiting screen ─────────────────────────────────────────── */
.waiting-hint {
  font-family: var(--font-ui); font-size: 0.76rem;
  color: var(--text2); text-align: center; line-height: 1.7;
  max-width: 260px; margin: 0 auto 16px;
}

/* ── Responsive: larger touch targets on mobile ─────────────── */
@media (max-width: 640px) {
  .btn-primary { padding: 15px 20px; }
  .join-tab-btn { padding: 10px 8px; font-size: 0.76rem; }
  .field-label { font-size: 0.66rem; }
}

/* ── Settings modal ─────────────────────────────── */
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px); z-index: 9000; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; width: 100%; max-width: 340px; overflow: hidden; box-shadow: 0 16px 48px rgba(0,0,0,0.5); }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 18px 12px; border-bottom: 1px solid var(--border2); }
.modal-head h3 { font-size: 0.95rem; font-weight: 600; color: var(--text); }
.modal-body { padding: 12px 18px 18px; display: flex; flex-direction: column; gap: 2px; }
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border2); }
.setting-row:last-child { border-bottom: none; }
.setting-lbl { font-size: 0.82rem; font-weight: 500; color: var(--text); }
.setting-sub { font-size: 0.68rem; color: var(--text2); margin-top: 2px; }
.setting-val { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text2); }
.setting-val.teal { color: var(--teal); }
.setting-divider { height: 1px; background: var(--border2); margin: 4px 0; }

/* ── Chat layout ────────────────────────────────── */
#app { flex-direction: row; overflow: hidden; }
.sidebar { width: var(--sidebar-w); flex-shrink: 0; background: var(--bg2); border-right: 1px solid var(--border2); display: flex; flex-direction: column; height: 100%; overflow: hidden; }
.sidebar-top { padding: 12px 14px 10px; border-bottom: 1px solid var(--border2); }
.sidebar-brand { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.sidebar-appname { font-size: 0.95rem; font-weight: 700; color: var(--text); }
.room-pill { padding: 2px 8px; background: var(--teal-dim); border: 1px solid var(--teal-border); border-radius: 100px; font-family: var(--font-mono); font-size: 0.62rem; color: var(--teal); cursor: pointer; }
.sidebar-btns { display: flex; gap: 2px; justify-content: flex-end; }
.my-profile { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--border2); }
.profile-name { font-size: 0.82rem; font-weight: 600; color: var(--text); }
.profile-status { font-size: 0.68rem; color: var(--online); }
.admin-badge { font-size: 0.6rem; font-weight: 700; letter-spacing: 0.8px; color: var(--teal); background: var(--teal-dim); border: 1px solid var(--teal-border); border-radius: 100px; padding: 2px 7px; margin-left: auto; flex-shrink: 0; }
.section-head { padding: 8px 14px 4px; font-size: 0.64rem; font-weight: 600; letter-spacing: 1px; color: var(--text2); text-transform: uppercase; display: flex; align-items: center; gap: 6px; }
.count-chip { background: var(--teal-dim); color: var(--teal); border-radius: 100px; padding: 0 6px; font-size: 0.6rem; font-weight: 700; }
.members-list { flex: 1; overflow-y: auto; padding: 4px 8px; }
.sidebar-foot { padding: 10px 12px; border-top: 1px solid var(--border2); }

/* ── Main area ──────────────────────────────────── */
.main-area { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; background: var(--bg); }
.chat-header { display: flex; align-items: center; justify-content: space-between; padding: 0 12px; height: var(--header-h); border-bottom: 1px solid var(--border2); flex-shrink: 0; background: var(--bg); }
.chat-left { display: flex; align-items: center; gap: 10px; min-width: 0; }
.chat-right { display: flex; align-items: center; gap: 2px; }
.room-avatar { width: 34px; height: 34px; background: var(--teal-dim); border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.chat-name { font-size: 0.88rem; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-status { display: flex; align-items: center; gap: 5px; font-size: 0.68rem; color: var(--text2); }
.online-dot { width: 6px; height: 6px; background: var(--online); border-radius: 50%; flex-shrink: 0; }

/* ── Search bar ─────────────────────────────────── */
.search-bar { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: var(--bg2); border-bottom: 1px solid var(--border2); flex-shrink: 0; }
.search-bar input { flex: 1; font-size: 0.82rem; color: var(--text); }
.search-bar input::placeholder { color: var(--text3); }
.search-count { font-size: 0.68rem; color: var(--text2); white-space: nowrap; }

/* ── Messages area ──────────────────────────────── */
.messages-area { flex: 1; overflow-y: auto; padding: 8px 12px 4px; display: flex; flex-direction: column; gap: 4px; scroll-behavior: smooth; }
.messages-area::-webkit-scrollbar { width: 3px; }
.messages-area::-webkit-scrollbar-track { background: transparent; }
.messages-area::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── Welcome screen ─────────────────────────────── */
.room-welcome { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 40px 20px; text-align: center; margin: auto; }
.welcome-mark { width: 80px; height: 80px; }
.welcome-room { font-size: 1rem; font-weight: 600; color: var(--text2); font-family: var(--font-mono); letter-spacing: 1px; }
.welcome-sub { font-size: 0.74rem; color: var(--text2); line-height: 1.6; max-width: 260px; }
.welcome-enc { font-size: 0.65rem; color: var(--text3); }

/* ── Scroll FAB ─────────────────────────────────── */
.scroll-fab { position: absolute; bottom: 72px; right: 14px; width: 36px; height: 36px; background: var(--surface2); border: 1px solid var(--border); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--text2); box-shadow: 0 2px 8px rgba(0,0,0,0.3); opacity: 0; transform: scale(0.8); transition: opacity 0.2s, transform 0.2s; }
.scroll-fab.visible { opacity: 1; transform: scale(1); }
.fab-badge { position: absolute; top: -3px; right: -3px; min-width: 16px; height: 16px; background: var(--teal); color: var(--bg); border-radius: 100px; font-size: 0.6rem; font-weight: 700; display: flex; align-items: center; justify-content: center; padding: 0 3px; }

/* ── Reply bar ──────────────────────────────────── */
.reply-bar { display: flex; align-items: center; gap: 10px; padding: 8px 12px; background: var(--bg2); border-top: 1px solid var(--border2); flex-shrink: 0; opacity: 0; transform: translateY(4px); transition: opacity 0.2s, transform 0.2s; }
.reply-bar.visible { opacity: 1; transform: none; }
.reply-accent { width: 3px; height: 32px; background: var(--teal); border-radius: 2px; flex-shrink: 0; }
.reply-content { flex: 1; min-width: 0; }
.reply-sender { font-size: 0.7rem; font-weight: 600; color: var(--teal); margin-bottom: 1px; }
.reply-preview { font-size: 0.72rem; color: var(--text2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── Solo hint ──────────────────────────────────── */
.solo-hint { padding: 6px 12px; font-size: 0.7rem; color: var(--text2); text-align: center; background: var(--bg2); border-top: 1px solid var(--border2); flex-shrink: 0; }

/* ── Input area ─────────────────────────────────── */
.input-area { display: flex; align-items: flex-end; gap: 6px; padding: 8px 10px; background: var(--bg2); border-top: 1px solid var(--border2); flex-shrink: 0; }
.textarea-wrap { flex: 1; background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 2px 4px; min-height: 38px; display: flex; align-items: center; transition: border-color 0.15s; }
.textarea-wrap:focus-within { border-color: var(--teal-border); }
#msg-input { flex: 1; padding: 8px 10px; font-size: 0.88rem; line-height: 1.45; max-height: 120px; overflow-y: auto; color: var(--text); }
#msg-input::placeholder { color: var(--text3); }
.attach-btn { padding: 8px; color: var(--text2); border-radius: 50%; transition: color 0.15s; flex-shrink: 0; margin-bottom: 2px; }
.attach-btn:hover { color: var(--teal); }
.send-btn { width: 38px; height: 38px; background: var(--teal); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--bg); flex-shrink: 0; transition: opacity 0.15s, transform 0.1s; opacity: 0.45; }
.send-btn.has-input { opacity: 1; }
.send-btn:active { transform: scale(0.92); }

/* ── Icon button ────────────────────────────────── */
.icon-btn { width: 34px; height: 34px; display: flex; align-items: center; justify-content: center; border-radius: var(--r); color: var(--text2); transition: color 0.15s, background 0.15s; flex-shrink: 0; }
.icon-btn:hover { background: var(--teal-dim); color: var(--teal); }

/* ── Gear spin ──────────────────────────────────── */
.gear-btn svg { transition: transform 0.5s cubic-bezier(0.34,1.56,0.64,1); transform-origin: center; }
.gear-btn:hover svg { transform: rotate(72deg); }

/* ── Hamburger (injected) ───────────────────────── */
.hamburger-btn.has-pending::after { content: ''; position: absolute; top: 7px; right: 7px; width: 7px; height: 7px; background: var(--texting); border-radius: 50%; }
.hamburger-btn { position: relative; }

/* ── Typing indicator ───────────────────────────── */
.typing-indicator { display: flex; align-items: center; gap: 4px; padding: 6px 14px; flex-shrink: 0; }
.typing-indicator.visible { display: flex; }
.typing-indicator span { width: 5px; height: 5px; background: var(--text3); border-radius: 50%; animation: dot-bounce 1.2s ease-in-out infinite; }
.typing-indicator span:nth-child(2) { animation-delay: 0.15s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.3s; }
.typing-text { font-size: 0.7rem; color: var(--text2); margin-left: 4px; }

/* ── Load earlier ───────────────────────────────── */
.load-earlier-btn { display: block; width: calc(100% - 24px); margin: 6px 12px 2px; padding: 8px; background: none; border: 1px solid var(--border); border-radius: 100px; color: var(--text2); font-size: 0.72rem; font-weight: 500; text-align: center; cursor: pointer; transition: all 0.15s; }
.load-earlier-btn:hover { border-color: var(--teal-border); color: var(--teal); }
.load-earlier-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Sidebar overlay ────────────────────────────── */
#sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 90; }
#sidebar-overlay.active { display: block; }

/* ── Mobile sidebar ─────────────────────────────── */
@media (max-width: 640px) {
  .sidebar { position: fixed; left: 0; top: 0; bottom: 0; z-index: 100; transform: translateX(-100%); transition: transform 0.28s cubic-bezier(0.22,1,0.36,1); box-shadow: 4px 0 20px rgba(0,0,0,0.4); }
  .sidebar.open { transform: translateX(0); }
  .main-area { width: 100%; }
}

/* ── Media viewer ───────────────────────────────── */
.media-viewer { position: fixed; inset: 0; background: rgba(0,0,0,0.92); z-index: 8000; display: flex; align-items: center; justify-content: center; padding: 20px; }
.mv-close { position: absolute; top: 16px; right: 16px; width: 36px; height: 36px; background: rgba(255,255,255,0.12); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; }
#mv-img { max-width: 100%; max-height: 90vh; border-radius: 8px; object-fit: contain; }
#mv-video { max-width: 100%; max-height: 90vh; border-radius: 8px; }

/* ── Toasts ─────────────────────────────────────── */
.toast-container { position: fixed; top: 16px; right: 16px; z-index: 9990; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.toast { display: flex; align-items: flex-start; gap: 10px; padding: 11px 14px; background: var(--surface2); border: 1px solid var(--border); border-radius: 12px; pointer-events: all; min-width: 220px; max-width: 300px; box-shadow: 0 4px 20px rgba(0,0,0,0.35); animation: toast-in 0.3s cubic-bezier(0.22,1,0.36,1) both; position: relative; overflow: hidden; cursor: pointer; }
.toast.removing { animation: toast-out 0.25s ease forwards; }
@keyframes toast-in { from { opacity:0; transform:translateX(20px); } to { opacity:1; transform:none; } }
@keyframes toast-out { to { opacity:0; transform:translateX(20px); } }
.toast-icon { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }
.toast-title { font-size: 0.78rem; font-weight: 600; color: var(--text); }
.toast-msg { font-size: 0.7rem; color: var(--text2); margin-top: 2px; }
.toast-bar { position: absolute; bottom: 0; left: 0; height: 2px; background: var(--teal); animation: toast-bar 4.5s linear forwards; }
@keyframes toast-bar { from{width:100%} to{width:0%} }

/* ── Animations ─────────────────────────────────── */
@keyframes nx-morph-in { from { opacity:0; transform:translateY(10px) scale(0.97); } to { opacity:1; transform:none; } }
.nx-anim { animation: nx-morph-in 0.38s cubic-bezier(0.22,1,0.36,1) both; }