/* ═══════════════════════════════════════════════════════════════════════════
   iText Chat — iOS-Inspired Glassmorphism UI
   Apple SF Pro · Dark glass · Green accent
═══════════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

:root {
  /* ── Base palette ── */
  --bg:            #000000;
  --bg2:           #0a0a0a;
  --bg3:           #111111;

  /* ── Glass surfaces ── */
  --glass-1:       rgba(255,255,255,0.05);
  --glass-2:       rgba(255,255,255,0.08);
  --glass-3:       rgba(255,255,255,0.12);
  --glass-border:  rgba(255,255,255,0.12);
  --glass-border2: rgba(255,255,255,0.18);
  --glass-blur:    blur(24px) saturate(1.8);
  --glass-blur-sm: blur(12px) saturate(1.6);

  /* ── Accent ── */
  --green:         #34c759;
  --green-dim:     #248a3d;
  --green-glow:    rgba(52,199,89,0.20);
  --green-glow2:   rgba(52,199,89,0.10);
  --green-subtle:  rgba(52,199,89,0.07);

  /* ── Text ── */
  --text-1:        #ffffff;
  --text-2:        rgba(255,255,255,0.60);
  --text-3:        rgba(255,255,255,0.35);
  --text-4:        rgba(255,255,255,0.20);

  /* ── Bubbles ── */
  --self-bg:       linear-gradient(135deg, #34c759 0%, #28a745 100%);
  --other-bg:      rgba(255,255,255,0.08);
  --self-text:     #000;
  --other-text:    #fff;

  /* ── Error ── */
  --red:           #ff3b30;
  --red-bg:        rgba(255,59,48,0.12);
  --red-border:    rgba(255,59,48,0.25);

  /* ── Warning ── */
  --orange:        #ff9500;
  --orange-bg:     rgba(255,149,0,0.12);

  /* ── Layout ── */
  --sidebar-w:     272px;
  --header-h:      60px;
  --safe-top:      env(safe-area-inset-top, 0px);
  --safe-bottom:   env(safe-area-inset-bottom, 0px);

  /* ── Radii ── */
  --r-xs:   6px;
  --r-sm:   10px;
  --r-md:   14px;
  --r-lg:   20px;
  --r-xl:   28px;
  --r-2xl:  36px;
  --r-pill: 999px;

  /* ── Motion ── */
  --spring: cubic-bezier(0.34,1.56,0.64,1);
  --ease:   cubic-bezier(0.22,1,0.36,1);
  --fast:   cubic-bezier(0.4,0,0.2,1);

  /* ── Font ── */
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", "Helvetica Neue", sans-serif;
  --mono: "SF Mono", ui-monospace, "Cascadia Code", Menlo, monospace;
}

html, body {
  height: 100%; height: 100dvh;
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  overscroll-behavior: none;
}

/* ── Scrollbars ── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }

/* ════════════════════════════════════════════════════════════
   SCREEN SYSTEM
════════════════════════════════════════════════════════════ */
.screen { display: none; width: 100%; height: 100dvh; }
.screen.active { display: flex; }

/* ════════════════════════════════════════════════════════════
   JOIN SCREEN
════════════════════════════════════════════════════════════ */

#join-screen {
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(52,199,89,0.15) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(52,199,89,0.07) 0%, transparent 60%),
    var(--bg);
  padding: 20px;
  position: relative;
  overflow: hidden;
}

#join-screen::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 60L60 0' stroke='rgba(255,255,255,0.015)' stroke-width='1'/%3E%3C/svg%3E");
  pointer-events: none;
}

.join-card {
  position: relative;
  width: 100%;
  max-width: 420px;
  background: var(--glass-1);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-2xl);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  padding: 40px 36px;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.04) inset,
    0 32px 80px rgba(0,0,0,0.6),
    0 0 60px var(--green-glow2);
  animation: cardIn 0.6s var(--ease) both;
}

@keyframes cardIn {
  from { opacity:0; transform: translateY(24px) scale(0.97); }
  to   { opacity:1; transform: translateY(0) scale(1); }
}

/* ── Brand (login page — name only, no icon) ── */
.brand {
  text-align: center;
  margin-bottom: 36px;
}

.brand-name {
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text-1);
  line-height: 1;
}
.brand-name span { color: var(--green); }

.brand-tag {
  font-size: 13px;
  color: var(--text-3);
  margin-top: 8px;
  letter-spacing: 0.2px;
}

/* ── Form fields ── */
.join-form { display: flex; flex-direction: column; gap: 16px; }

.field { display: flex; flex-direction: column; gap: 8px; }

.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: 0.1px;
}

.field input {
  width: 100%;
  height: 52px;
  background: var(--glass-2);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-md);
  padding: 0 16px;
  font-family: var(--font);
  font-size: 16px;
  color: var(--text-1);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
  backdrop-filter: var(--glass-blur-sm);
  -webkit-backdrop-filter: var(--glass-blur-sm);
}
.field input::placeholder { color: var(--text-4); }
.field input:focus {
  border-color: var(--green);
  background: rgba(52,199,89,0.06);
  box-shadow: 0 0 0 3px var(--green-glow2), 0 2px 8px rgba(0,0,0,0.3);
}

.field-hint {
  font-size: 12px;
  color: var(--text-3);
  line-height: 1.4;
}

/* ── Join button ── */
.btn-primary {
  width: 100%;
  height: 54px;
  margin-top: 8px;
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dim) 100%);
  color: #000;
  border: none;
  border-radius: var(--r-md);
  font-family: var(--font);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.1px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(52,199,89,0.4), 0 1px 4px rgba(0,0,0,0.3);
  transition: transform 0.15s var(--spring), box-shadow 0.15s;
}
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 60%);
  pointer-events: none;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(52,199,89,0.5); }
.btn-primary:active { transform: scale(0.98) translateY(0); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ── Join error ── */
.join-error {
  margin-top: 12px;
  padding: 12px 16px;
  background: var(--red-bg);
  border: 1px solid var(--red-border);
  border-radius: var(--r-sm);
  color: var(--red);
  font-size: 14px;
  text-align: center;
}
.join-error.hidden { display: none; }

.join-mobile-about { margin-top: 24px; text-align: center; }
.mobile-about-link { color: var(--text-3); font-size: 13px; text-decoration: none; }
.mobile-about-link:hover { color: var(--text-2); }

/* ── Desktop side panel ── */
.join-left-panel {
  display: none;
  position: fixed;
  top: 24px; left: 24px;
}
@media (min-width: 900px) {
  .join-left-panel { display: block; }
  .join-mobile-about { display: none; }
}

.join-side-nav { display: flex; flex-direction: column; gap: 8px; }
.side-nav-item {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-3);
  font-size: 14px;
  text-decoration: none;
  padding: 10px 14px;
  border-radius: var(--r-sm);
  transition: color 0.15s, background 0.15s;
}
.side-nav-item:hover { color: var(--text-2); background: var(--glass-1); }
.side-nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ════════════════════════════════════════════════════════════
   CHAT SCREEN
════════════════════════════════════════════════════════════ */

#chat-screen {
  position: relative;
  background: var(--bg);
  overflow: hidden;
}

/* ── Sidebar ── */
#sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transform: translateX(-100%);
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
  padding-top: var(--safe-top);
  overflow: hidden;
}

#sidebar.open {
  transform: translateX(0);
  box-shadow: 4px 0 40px rgba(0,0,0,0.6);
}

@media (min-width: 768px) {
  #sidebar {
    position: relative;
    transform: none !important;
    flex-shrink: 0;
    box-shadow: none;
  }
  #chat-screen { flex-direction: row; }
}

.sidebar-backdrop {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 99;
  opacity: 0;
  transition: opacity 0.3s;
}
.sidebar-backdrop.visible { display: block; opacity: 1; }
@media (min-width: 768px) { .sidebar-backdrop { display: none !important; } }

/* Sidebar sections */
.sidebar-top {
  padding: 20px 20px 0;
}

.sidebar-brand {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 24px;
}
.sidebar-brand-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dim) 100%);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 10px rgba(52,199,89,0.3);
  flex-shrink: 0;
  overflow: hidden;
}
.sidebar-logo-img { width: 22px; height: 22px; object-fit: contain; }
.sidebar-brand-name { font-size: 16px; font-weight: 700; }
.sidebar-brand-name span { color: var(--green); }

.room-info { margin-bottom: 0; }
.room-label { font-size: 11px; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 4px; }
.room-name  { font-size: 20px; font-weight: 700; color: var(--text-1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Room capacity bar */
.room-capacity { margin-top: 10px; }
.capacity-label {
  display: flex; justify-content: space-between;
  font-size: 11px; color: var(--text-3);
  margin-bottom: 5px;
}
.capacity-bar {
  height: 4px;
  background: rgba(255,255,255,0.08);
  border-radius: 2px;
  overflow: hidden;
}
.capacity-fill {
  height: 100%;
  background: var(--green);
  border-radius: 2px;
  transition: width 0.5s var(--ease), background 0.3s;
}
.capacity-fill.warning { background: var(--orange); }
.capacity-fill.full    { background: var(--red); }

/* Rooms section */
.rooms-section {
  padding: 16px 16px 16px 20px;
  border-bottom: 1px solid var(--glass-border);
  overflow: hidden;
}
.rooms-label {
  font-size: 11px; font-weight: 600; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.8px;
  margin-bottom: 10px;
}
.rooms-list { display: flex; flex-direction: column; gap: 2px; margin-bottom: 10px; }
.room-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background 0.15s;
  color: var(--text-2);
  font-size: 14px;
  border: none; background: none; font-family: var(--font);
  width: 100%; text-align: left;
}
.room-item:hover { background: var(--glass-2); color: var(--text-1); }
.room-item.active { background: var(--green-subtle); color: var(--green); }
.room-item-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.room-item-count { font-size: 11px; color: var(--text-3); flex-shrink: 0; margin-left: 8px; }

.new-room-row { display: flex; gap: 6px; width: 100%; min-width: 0; }
.new-room-row input {
  flex: 1;
  min-width: 0;
  height: 36px;
  background: var(--glass-2);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-sm);
  padding: 0 10px;
  font-size: 13px;
  color: var(--text-1);
  outline: none;
  font-family: var(--font);
  transition: border-color 0.2s, background 0.2s;
}
.new-room-row input::placeholder { color: var(--text-4); }
.new-room-row input:focus { border-color: var(--green); background: rgba(52,199,89,0.05); }

.btn-new-room {
  width: 36px; height: 36px;
  min-width: 36px;
  background: var(--green);
  color: #000;
  border: none;
  border-radius: var(--r-sm);
  font-size: 20px;
  cursor: pointer;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.15s, box-shadow 0.15s;
  font-weight: 300;
}
.btn-new-room:hover { transform: scale(1.05); box-shadow: 0 2px 12px rgba(52,199,89,0.4); }
.btn-new-room:active { transform: scale(0.95); }

/* Users section */
.users-section {
  flex: 1;
  padding: 16px 20px;
  overflow-y: auto;
  min-height: 0;
}
.users-label {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; font-weight: 600; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.8px;
  margin-bottom: 10px;
}
.badge {
  background: var(--green-subtle);
  color: var(--green);
  border: 1px solid rgba(52,199,89,0.2);
  border-radius: var(--r-pill);
  font-size: 11px;
  font-weight: 700;
  padding: 1px 7px;
  min-width: 22px;
  text-align: center;
}

#user-list { list-style: none; display: flex; flex-direction: column; gap: 2px; }
#user-list li {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 10px;
  border-radius: var(--r-sm);
  font-size: 14px;
  color: var(--text-2);
}
#user-list li.self { color: var(--green); }
.user-dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 6px var(--green-glow);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 6px var(--green-glow); }
  50%      { box-shadow: 0 0 10px rgba(52,199,89,0.5); }
}

/* Sidebar footer */
.sidebar-footer {
  padding: 16px 20px;
  padding-bottom: calc(16px + var(--safe-bottom));
  border-top: 1px solid var(--glass-border);
  display: flex; flex-direction: column; gap: 8px;
}

.btn-about-dev {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-3); font-size: 14px; text-decoration: none;
  padding: 10px 12px; border-radius: var(--r-sm);
  transition: color 0.15s, background 0.15s;
}
.btn-about-dev:hover { color: var(--text-2); background: var(--glass-2); }
.btn-about-dev svg { width: 16px; height: 16px; }

.btn-leave {
  display: flex; align-items: center; gap: 10px;
  background: var(--red-bg);
  color: var(--red);
  border: 1px solid var(--red-border);
  border-radius: var(--r-sm);
  padding: 10px 14px;
  font-family: var(--font);
  font-size: 14px; font-weight: 500;
  cursor: pointer;
  width: 100%;
  transition: background 0.15s, transform 0.1s;
}
.btn-leave:hover { background: rgba(255,59,48,0.18); transform: translateY(-1px); }
.btn-leave:active { transform: scale(0.98); }
.btn-leave svg { width: 16px; height: 16px; }

/* ── MAIN CHAT AREA ── */
#chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100dvh;
  position: relative;
  background: var(--bg);
}

/* ── Header ── */
#chat-header {
  height: var(--header-h);
  padding-top: var(--safe-top);
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  flex-shrink: 0;
  z-index: 10;
  position: relative;
}

.sidebar-toggle {
  width: 36px; height: 36px;
  background: var(--glass-2);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-sm);
  color: var(--text-2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}
.sidebar-toggle:hover { background: var(--glass-3); color: var(--text-1); }
.sidebar-toggle svg { width: 18px; height: 18px; }
@media (min-width: 768px) { .sidebar-toggle { display: none; } }

.header-room {
  display: flex; align-items: center; gap: 8px;
  min-width: 0; flex: 1;
}
.header-room-name {
  font-size: 17px; font-weight: 700;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  color: var(--text-1);
}
.live-dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 6px var(--green-glow);
  animation: pulse 2.5s ease-in-out infinite;
}
.live-dot.offline { background: var(--text-3); box-shadow: none; animation: none; }

.header-count {
  font-size: 13px; color: var(--text-3);
  white-space: nowrap; flex-shrink: 0;
}

/* ── Messages ── */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  scroll-behavior: smooth;
  position: relative;
  z-index: 1;
}

/* System messages */
.msg-system {
  text-align: center;
  color: var(--text-3);
  font-size: 13px;
  padding: 6px 0;
}
.msg-system.warning { color: var(--orange); }

/* ── Message row ── */
.msg-row {
  display: flex;
  flex-direction: column;
  max-width: 75%;
  animation: msgIn 0.25s var(--ease) both;
  position: relative;
}
@keyframes msgIn {
  from { opacity:0; transform: translateY(8px) scale(0.97); }
  to   { opacity:1; transform: translateY(0) scale(1); }
}

.msg-row.self  { align-self: flex-end;   align-items: flex-end; }
.msg-row.other { align-self: flex-start; align-items: flex-start; }

.msg-meta {
  display: flex; align-items: center; gap: 6px;
  margin-bottom: 3px;
  padding: 0 4px;
}
.msg-username { font-size: 12px; font-weight: 600; color: var(--text-3); }
.msg-row.self .msg-username { display: none; }

.msg-time { font-size: 11px; color: var(--text-4); }

/* Reply preview inside bubble */
.msg-reply-preview {
  background: rgba(255,255,255,0.04);
  border-left: 3px solid var(--green);
  border-radius: var(--r-xs);
  padding: 4px 10px;
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 4px;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Bubble */
.msg-bubble {
  padding: 10px 14px;
  border-radius: var(--r-lg);
  font-size: 15px;
  line-height: 1.45;
  word-break: break-word;
  position: relative;
  transition: transform 0.1s;
}

.msg-row.self  .msg-bubble {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dim) 100%);
  color: #000;
  border-bottom-right-radius: var(--r-xs);
  box-shadow: 0 2px 12px rgba(52,199,89,0.25);
}
.msg-row.other .msg-bubble {
  background: var(--glass-2);
  backdrop-filter: var(--glass-blur-sm);
  -webkit-backdrop-filter: var(--glass-blur-sm);
  border: 1px solid var(--glass-border);
  color: var(--text-1);
  border-bottom-left-radius: var(--r-xs);
}

/* Consecutive messages */
.msg-row.consec { margin-top: -2px; }
.msg-row.self.consec  .msg-bubble { border-top-right-radius: var(--r-xs); }
.msg-row.other.consec .msg-bubble { border-top-left-radius: var(--r-xs); }

/* ── MEDIA MESSAGES ── */
.msg-image { max-width: 280px; max-height: 280px; border-radius: var(--r-md); object-fit: cover; cursor: pointer; display: block; }
.msg-video { max-width: 280px; border-radius: var(--r-md); display: block; }
.msg-audio { width: 100%; max-width: 280px; }

.msg-file {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  background: var(--glass-2);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-md);
  cursor: pointer;
  text-decoration: none;
  color: var(--text-1);
  transition: background 0.15s;
  min-width: 200px;
}
.msg-file:hover { background: var(--glass-3); }
.msg-file-icon { font-size: 28px; flex-shrink: 0; }
.msg-file-info { overflow: hidden; min-width: 0; }
.msg-file-name { font-size: 14px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg-file-size { font-size: 12px; color: var(--text-3); margin-top: 2px; }

/* ── Reactions ── */
.msg-reactions {
  display: flex; flex-wrap: wrap; gap: 4px;
  margin-top: 5px;
}
.reaction-chip {
  display: flex; align-items: center; gap: 3px;
  background: var(--glass-2);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-pill);
  padding: 2px 8px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  user-select: none;
}
.reaction-chip:hover { background: var(--glass-3); transform: scale(1.05); }
.reaction-chip.mine { border-color: rgba(52,199,89,0.4); background: var(--green-subtle); }
.reaction-count { font-size: 11px; color: var(--text-3); }

/* ── Reaction picker ── */
.reaction-picker {
  position: fixed;
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-lg);
  padding: 10px 12px;
  display: flex; gap: 6px;
  z-index: 200;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  animation: pickerIn 0.2s var(--spring) both;
}
@keyframes pickerIn {
  from { opacity:0; transform: scale(0.8) translateY(8px); }
  to   { opacity:1; transform: scale(1) translateY(0); }
}
.reaction-picker button {
  background: none; border: none;
  font-size: 22px; cursor: pointer;
  padding: 4px;
  border-radius: var(--r-sm);
  transition: transform 0.15s, background 0.1s;
}
.reaction-picker button:hover { transform: scale(1.3); background: var(--glass-2); }

/* ── Message action buttons ── */
.msg-actions {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  display: flex; gap: 4px;
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur-sm);
  -webkit-backdrop-filter: var(--glass-blur-sm);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-pill);
  padding: 4px 6px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
  z-index: 10;
  white-space: nowrap;
}
.msg-row.self  .msg-actions { right: 100%; margin-right: 8px; }
.msg-row.other .msg-actions { left: 100%;  margin-left: 8px; }
.msg-row:hover .msg-actions { opacity: 1; pointer-events: auto; }

.msg-action-btn {
  background: none; border: none;
  font-size: 14px; cursor: pointer;
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--text-2);
  transition: background 0.1s, color 0.1s;
}
.msg-action-btn:hover { background: var(--glass-2); color: var(--text-1); }

/* ── Read receipts ── */
.msg-read { font-size: 11px; color: var(--text-4); text-align: right; margin-top: 2px; padding-right: 4px; }

/* ── Typing indicator ── */
.typing-bar {
  min-height: 28px;
  padding: 0 20px;
  display: flex; align-items: center;
  font-size: 13px; color: var(--text-3);
  flex-shrink: 0;
}
.typing-dots {
  display: inline-flex; gap: 3px; align-items: center; margin-right: 6px;
}
.typing-dots span {
  width: 5px; height: 5px;
  background: var(--text-3);
  border-radius: 50%;
  animation: dot 1.2s ease-in-out infinite;
}
.typing-dots span:nth-child(2) { animation-delay: 0.15s; }
.typing-dots span:nth-child(3) { animation-delay: 0.30s; }
@keyframes dot {
  0%,60%,100% { transform: translateY(0); opacity: 0.4; }
  30%         { transform: translateY(-4px); opacity: 1; }
}

/* ── Reply bar ── */
#reply-bar {
  display: none;
  padding: 8px 16px;
  background: var(--glass-1);
  border-top: 1px solid var(--glass-border);
  align-items: center; gap: 10px;
}
#reply-bar.visible { display: flex; }
.reply-bar-preview {
  flex: 1;
  font-size: 13px;
  color: var(--text-3);
  border-left: 3px solid var(--green);
  padding-left: 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.reply-bar-cancel {
  background: none; border: none;
  color: var(--text-3); font-size: 18px;
  cursor: pointer; padding: 4px;
  border-radius: 50%;
  transition: color 0.1s, background 0.1s;
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
}
.reply-bar-cancel:hover { color: var(--red); background: var(--red-bg); }

/* ── Input area ── */
.input-area {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 10px 14px;
  padding-bottom: calc(10px + var(--safe-bottom));
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--glass-border);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

/* Wrap textarea + send with explicit gap */
.input-compose {
  display: flex;
  flex: 1;
  align-items: flex-end;
  min-width: 0;
  gap: 10px;
}

.btn-attach {
  width: 40px; height: 40px;
  background: var(--glass-2);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-md);
  color: var(--text-2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s, transform 0.1s;
}
.btn-attach:hover { background: var(--glass-3); color: var(--text-1); }
.btn-attach:active { transform: scale(0.95); }
.btn-attach svg { width: 18px; height: 18px; }

#msg-input {
  flex: 1;
  max-width: calc(100% - 60px);
  min-height: 40px;
  max-height: 120px;
  background: var(--glass-2);
  border: none;
  box-shadow: inset 0 0 0 1px var(--glass-border);
  border-radius: var(--r-xl);
  padding: 9px 14px;
  font-family: var(--font);
  font-size: 15px;
  color: var(--text-1);
  outline: none;
  resize: none;
  line-height: 1.4;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  overflow-y: auto;
}
#msg-input::placeholder { color: var(--text-4); }
#msg-input:focus {
  box-shadow: inset 0 0 0 1px rgba(52,199,89,0.4), 0 0 0 3px var(--green-glow2);
  background: rgba(52,199,89,0.04);
}

/* Floating send button — elevated, separated */
.btn-send {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dim) 100%);
  border: none;
  border-radius: 50%;
  color: #000;
  cursor: pointer;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.15s var(--spring), box-shadow 0.15s, opacity 0.15s;
  box-shadow: 0 4px 18px rgba(52,199,89,0.5), 0 2px 6px rgba(0,0,0,0.4);
  position: relative;
  overflow: hidden;
  margin-bottom: 0;
}
.btn-send::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 60%);
}
.btn-send:hover { transform: scale(1.08); box-shadow: 0 6px 24px rgba(52,199,89,0.65), 0 2px 8px rgba(0,0,0,0.4); }
.btn-send:active { transform: scale(0.93); }
.btn-send svg { width: 18px; height: 18px; position: relative; z-index: 1; }

/* ── Attachment menu ── */
#attach-menu {
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 12px;
  background: rgba(10,10,10,0.75);
  backdrop-filter: blur(40px) saturate(2);
  -webkit-backdrop-filter: blur(40px) saturate(2);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  padding: 8px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.7);
  z-index: 50;
  animation: menuIn 0.2s var(--spring) both;
}
#attach-menu.open { display: flex; flex-direction: column; gap: 4px; }
@keyframes menuIn {
  from { opacity:0; transform: translateY(8px) scale(0.95); }
  to   { opacity:1; transform: translateY(0) scale(1); }
}

.attach-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  border-radius: var(--r-lg);
  cursor: pointer;
  color: var(--text-2);
  font-size: 15px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
  border: none; background: none;
  font-family: var(--font);
  width: 100%;
  text-align: left;
}
.attach-item:hover { background: var(--glass-2); color: var(--text-1); }
.attach-item-icon { font-size: 22px; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: var(--glass-2); border-radius: var(--r-sm); }

/* ── Hidden file inputs ── */
#file-input-image,
#file-input-doc,
#file-input-video,
#file-input-audio { display: none; }

/* ── Image lightbox ── */
#lightbox {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(12px);
  z-index: 300;
  align-items: center; justify-content: center;
  cursor: zoom-out;
}
#lightbox.open { display: flex; animation: fadeIn 0.2s; }
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
#lightbox img { max-width: 92vw; max-height: 92vh; border-radius: var(--r-lg); object-fit: contain; box-shadow: 0 8px 64px rgba(0,0,0,0.8); }

/* ── Help overlay ── */
.overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 400;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.overlay.hidden { display: none; }
.overlay-card {
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-2xl);
  padding: 32px;
  width: 100%; max-width: 400px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  animation: cardIn 0.3s var(--ease) both;
}
.overlay-card h2 { font-size: 22px; font-weight: 700; margin-bottom: 20px; }
.cmd-list { list-style: none; display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.cmd-list li { display: flex; flex-direction: column; gap: 4px; }
.cmd-list code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--glass-2);
  color: var(--green);
  padding: 2px 8px; border-radius: 6px;
  display: inline-block;
}
.cmd-list li span { font-size: 14px; color: var(--text-2); }

.help-features {
  display: flex; flex-direction: column; gap: 10px;
  padding: 14px 16px;
  background: rgba(52,199,89,0.06);
  border: 1px solid rgba(52,199,89,0.2);
  border-radius: var(--r-md);
  margin-bottom: 20px;
}
.help-features p { font-size: 13px; color: var(--text-3); line-height: 1.5; }
.help-features strong { color: var(--green); }

.btn-close {
  width: 100%; height: 44px;
  background: var(--glass-2);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-md);
  color: var(--text-1); font-family: var(--font);
  font-size: 15px; font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-close:hover { background: var(--glass-3); }

/* ── Toast notifications ── */
#toast-container {
  position: fixed;
  top: calc(var(--safe-top) + 80px);
  left: 50%; transform: translateX(-50%);
  z-index: 500;
  display: flex; flex-direction: column; gap: 8px;
  align-items: center;
  pointer-events: none;
  width: 100%; max-width: 360px; padding: 0 16px;
}
.toast {
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-pill);
  padding: 10px 18px;
  font-size: 14px; font-weight: 500;
  color: var(--text-1);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  animation: toastIn 0.3s var(--spring) both, toastOut 0.3s var(--ease) 2.7s both;
  pointer-events: auto;
  text-align: center;
}
.toast.error   { border-color: var(--red-border);           color: var(--red); }
.toast.success { border-color: rgba(52,199,89,0.3);         color: var(--green); }
.toast.warning { border-color: rgba(255,149,0,0.3);         color: var(--orange); }
@keyframes toastIn  { from { opacity:0; transform: translateY(-12px) scale(0.9); } to { opacity:1; transform: translateY(0) scale(1); } }
@keyframes toastOut { from { opacity:1; } to { opacity:0; transform: translateY(-8px) scale(0.95); } }

/* ── Upload progress ── */
.upload-progress {
  position: absolute;
  bottom: 100%;
  left: 12px; right: 12px;
  height: 2px;
  background: var(--glass-2);
  border-radius: 1px;
  overflow: hidden;
  display: none;
}
.upload-progress.active { display: block; }
.upload-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--green-dim));
  border-radius: 1px;
  transition: width 0.15s linear;
}

/* ── Connection status banner ── */
#conn-status {
  display: none;
  position: fixed;
  top: calc(var(--safe-top) + 8px);
  left: 50%; transform: translateX(-50%);
  background: var(--orange-bg);
  border: 1px solid rgba(255,149,0,0.3);
  border-radius: var(--r-pill);
  padding: 6px 16px;
  font-size: 13px; font-weight: 500;
  color: var(--orange);
  z-index: 600;
  pointer-events: none;
}
#conn-status.visible { display: block; animation: toastIn 0.3s var(--spring); }

/* ── Responsive ── */
@media (max-width: 767px) {
  .msg-row { max-width: 88%; }
}