:root {
  color-scheme: dark;
  --bg: #0b1020;
  --panel: #151d33;
  --panel-2: #1b2542;
  --line: #293653;
  --text: #f4f7ff;
  --muted: #9ba9c5;
  --accent: #6ee7d2;
  --accent-2: #8aa7ff;
  --danger: #ff6b7a;
}

* { box-sizing: border-box; }

html { min-width: 320px; }

body {
  margin: 0;
  min-height: 100vh;
  min-width: 320px;
  background: radial-gradient(circle at top right, #263d69 0, transparent 40%), var(--bg);
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.hidden { display: none !important; }

/* ---- Join screen ---- */
.join-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.join-card {
  width: min(460px, 100%);
  background: color-mix(in srgb, var(--panel) 90%, transparent);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.brand h1 { margin: 0; font-size: 1.6rem; letter-spacing: -0.02em; }
.tagline { color: var(--muted); margin: 10px 0 24px; }

.join-form { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 0.85rem; color: var(--muted); }
.field input {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #0e1428;
  color: var(--text);
  font-size: 1rem;
}
.field input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.join-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 4px; }

.primary-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1020;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-weight: 600;
  cursor: pointer;
}
.primary-btn.small { padding: 8px 14px; font-size: 0.9rem; }
.primary-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.ghost-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
}
.ghost-btn:hover { border-color: var(--accent); }

.preflight { margin-top: 22px; border-top: 1px solid var(--line); padding-top: 18px; }
.preflight-preview {
  position: relative;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.preflight-preview video { width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); }
.preflight-preview .hint {
  position: absolute; inset: auto 0 0 0; margin: 0; padding: 8px 10px;
  background: rgba(0,0,0,0.5); font-size: 0.8rem; color: var(--muted);
}
.preflight-toggles { display: flex; gap: 8px; margin-top: 10px; }
#retryMediaBtn { margin-top: 10px; width: 100%; }
.toggle-btn {
  flex: 1;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
}
.toggle-btn:not(.is-on) { opacity: 0.5; }
.toggle-btn:disabled, .control-btn:disabled { opacity: 0.45; cursor: not-allowed; }

.status-text { color: var(--muted); font-size: 0.9rem; min-height: 1.2em; margin: 14px 0 0; }

/* ---- Meeting screen ---- */
.meeting-screen { display: flex; flex-direction: column; min-height: 100vh; min-height: 100dvh; }

.meeting-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; border-bottom: 1px solid var(--line);
}
.meeting-info { display: flex; align-items: center; gap: 10px; }
.meeting-info strong { letter-spacing: 0.02em; }
.meeting-header { flex-wrap: wrap; gap: 8px; }
#meetingMediaStatus { width: 100%; }
.link-btn {
  background: transparent; border: 1px solid var(--line); color: var(--accent-2);
  border-radius: 6px; padding: 4px 10px; font-size: 0.8rem; cursor: pointer; text-decoration: none;
}
.connection-status { color: var(--muted); font-size: 0.85rem; }

.meeting-body { flex: 1; display: flex; min-height: 0; overflow: hidden; }

.video-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  min-width: 0;
  min-height: 0;
  gap: 12px;
  padding: 16px;
  align-content: start;
  overflow-y: auto;
}

.video-tile {
  position: relative;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
}
.video-tile video { width: 100%; height: 100%; object-fit: cover; }
.video-tile:first-child video { transform: scaleX(-1); }
.tile-avatar {
  position: absolute; inset: 0; display: none; align-items: center; justify-content: center;
  font-size: 2rem; font-weight: 700; color: var(--muted); background: var(--panel-2);
}
.video-tile:not(.has-video) video { display: none; }
.video-tile:not(.has-video) .tile-avatar { display: flex; }
.tile-name {
  position: absolute; left: 8px; bottom: 8px; font-size: 0.8rem;
  background: rgba(0,0,0,0.55); padding: 3px 8px; border-radius: 6px;
}

.side-panel {
  width: 320px;
  flex: 0 0 320px;
  min-width: 0;
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
}
.side-tabs { display: flex; border-bottom: 1px solid var(--line); }
.side-tab {
  flex: 1; padding: 12px; background: transparent; border: none; color: var(--muted);
  cursor: pointer; font-size: 0.9rem; border-bottom: 2px solid transparent;
}
.side-tab.is-active { color: var(--text); border-bottom-color: var(--accent); }

.side-tab-panel { flex: 1; display: flex; flex-direction: column; min-height: 0; padding: 14px; }

.chat-log { list-style: none; margin: 0; padding: 0; flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; }
.chat-message { display: flex; flex-direction: column; gap: 2px; }
.chat-meta { font-size: 0.72rem; color: var(--muted); }
.chat-text { background: var(--panel-2); padding: 8px 10px; border-radius: 8px; align-self: flex-start; max-width: 90%; word-break: break-word; }
.chat-message.is-mine .chat-text { align-self: flex-end; background: color-mix(in srgb, var(--accent) 25%, var(--panel-2)); }

.chat-form { display: flex; gap: 8px; margin-top: 10px; }
.chat-form input {
  flex: 1; min-width: 0; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--line);
  background: #0e1428; color: var(--text);
}

.people-list, .file-log { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; overflow-y: auto; }
.people-list li { display: flex; align-items: center; gap: 10px; }
.avatar {
  width: 28px; height: 28px; border-radius: 50%; background: var(--panel-2);
  display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700;
}

.file-picker {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 10px 12px; border: 1px dashed var(--line); border-radius: 8px; cursor: pointer;
}
.file-picker input { display: none; }
.file-log { margin-top: 12px; }
.file-entry { font-size: 0.85rem; padding: 8px; background: var(--panel-2); border-radius: 8px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }

.hint { color: var(--muted); font-size: 0.8rem; }

.control-bar {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px; border-top: 1px solid var(--line); flex-wrap: wrap;
}
.control-btn {
  position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  background: var(--panel-2); border: 1px solid var(--line); color: var(--text);
  border-radius: 10px; padding: 10px 16px; cursor: pointer; font-size: 0.72rem;
}
.control-btn .control-icon { font-size: 1.2rem; }
.control-btn:not(.is-on) { background: color-mix(in srgb, var(--danger) 25%, var(--panel-2)); }
.control-btn.leave-btn { background: var(--danger); color: #2a0a0d; }
.control-badge {
  position: absolute; top: -6px; right: -6px; background: var(--accent); color: #0b1020;
  border-radius: 999px; font-size: 0.65rem; padding: 1px 6px; font-weight: 700;
}

#meetingScreen:fullscreen,
#meetingScreen:-webkit-full-screen {
  width: 100%;
  height: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
}

@media (max-width: 820px) {
  .meeting-body { position: relative; flex-direction: column; }
  .video-grid { width: 100%; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
  .side-panel {
    position: absolute;
    z-index: 2;
    inset: auto 0 0;
    width: 100%;
    height: min(48dvh, 400px);
    max-height: calc(100% - 12px);
    border-left: none;
    border-top: 1px solid var(--line);
    box-shadow: 0 -12px 32px rgba(0, 0, 0, 0.32);
  }
}

@media (max-width: 600px) {
  .join-screen {
    min-height: 100vh;
    min-height: 100dvh;
    align-items: flex-start;
    padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  }

  .join-card {
    width: 100%;
    margin: auto 0;
    padding: clamp(20px, 6vw, 28px);
    border-radius: 14px;
  }

  .join-actions { flex-direction: column; }
  .join-actions > button { width: 100%; min-height: 48px; }
  .field input { min-height: 46px; font-size: 16px; }
  .toggle-btn { min-height: 44px; }

  .meeting-header {
    padding: max(8px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) 10px max(12px, env(safe-area-inset-left));
    gap: 4px 10px;
  }

  .meeting-info { flex: 1 1 100%; min-width: 0; flex-wrap: wrap; gap: 6px 10px; }
  .meeting-info strong { min-width: 0; overflow-wrap: anywhere; }
  .link-btn { min-height: 40px; padding: 7px 10px; }
  .connection-status { font-size: 0.78rem; }

  .video-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 160px), 1fr));
    gap: 8px;
    padding: 10px;
  }

  .video-tile { aspect-ratio: 4 / 3; border-radius: 10px; }
  .tile-name { left: 6px; bottom: 6px; font-size: 0.72rem; }

  .side-panel { height: min(52dvh, 420px); }
  .side-tab { min-height: 48px; padding: 10px 8px; }
  .side-tab-panel { padding: 12px; }
  .chat-form input { min-height: 44px; font-size: 16px; }
  .primary-btn.small { min-height: 44px; }
  .file-picker { min-height: 48px; }

  .control-bar {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    padding: 10px max(12px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  }

  .control-btn {
    min-width: 0;
    min-height: 56px;
    justify-content: center;
    padding: 7px 4px;
    font-size: 0.68rem;
    line-height: 1.15;
  }

  .control-btn .control-icon { font-size: 1.15rem; }
  .control-btn .control-label { overflow-wrap: anywhere; text-align: center; }
}