:root {
  --bg: #0f1115;
  --bg-elevated: #171a21;
  --bg-card: #1e2128;
  --accent: #5b6ef5;
  --accent-hover: #6f7ff8;
  --danger: #ef4444;
  --danger-hover: #f85555;
  --success: #22c55e;
  --text: #e8eaed;
  --text-dim: #9aa0ab;
  --border: #2a2e38;
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  overflow: hidden;
}

#app-root { height: 100%; width: 100%; }

/* ---------- Lobby screen ---------- */
.lobby-screen {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.lobby-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  text-align: center;
}

.lobby-card h1 {
  font-size: 24px;
  margin: 0 0 8px;
}

.lobby-card .subtitle {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 28px;
}

.lobby-card input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 15px;
  margin-bottom: 12px;
  outline: none;
  transition: border-color .15s;
}

.lobby-card input:focus { border-color: var(--accent); }

.lobby-card button {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: none;
  background: var(--accent);
  color: white;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
  margin-top: 6px;
}

.lobby-card button:hover { background: var(--accent-hover); }
.lobby-card button:disabled { opacity: .5; cursor: not-allowed; }

.lobby-card .btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.lobby-card .btn-secondary:hover { background: var(--bg-elevated); color: var(--text); }

.divider {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-dim);
  font-size: 12px;
  margin: 20px 0;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.error-box {
  background: rgba(239, 68, 68, .12);
  border: 1px solid rgba(239, 68, 68, .3);
  color: #ff9a9a;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
  text-align: left;
}

/* device preview on lobby */
.device-preview {
  background: #000;
  border-radius: 10px;
  aspect-ratio: 16/9;
  margin-bottom: 16px;
  overflow: hidden;
  position: relative;
}
.device-preview video {
  width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1);
}
.device-preview .no-cam {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--text-dim); font-size: 13px;
}

/* ---- Переключатели камеры/микрофона в лобби (с чем входить в звонок) ---- */
.join-toggles {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}
.join-toggle-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}
.join-toggle-btn.on {
  border-color: var(--accent);
  background: rgba(91, 110, 245, .12);
  color: var(--text);
}
.join-toggle-btn.off {
  color: var(--text-dim);
}
.join-toggle-btn.off i { color: var(--danger); }
.join-toggle-btn:hover { background: var(--bg-card); }

/* ---------- Room screen ---------- */
.room-screen {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.room-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  -webkit-app-region: drag;
  flex-shrink: 0;
}

.room-topbar .room-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-dim);
}

.room-topbar .room-code-badge {
  background: var(--bg-card);
  padding: 4px 10px;
  border-radius: 6px;
  font-family: monospace;
  color: var(--text);
  cursor: pointer;
  -webkit-app-region: no-drag;
}

.room-topbar .host-indicator {
  display: flex;
  align-items: center;
  gap: 5px;
  color: #f5c518;
  font-size: 12px;
  font-weight: 600;
}

.room-topbar .status-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--success);
  display: inline-block;
}
.room-topbar .status-dot.connecting { background: #f59e0b; }
.room-topbar .status-dot.disconnected { background: var(--danger); }

.room-main {
  flex: 1;
  display: flex;
  min-height: 0;
}

.stage {
  flex: 1;
  display: grid;
  gap: 8px;
  padding: 12px;
  min-height: 0;
  grid-auto-rows: 1fr;
}

.tile {
  position: relative;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  border: 2px solid transparent;
  min-height: 0;
}
.tile.speaking { border-color: var(--accent); }
.tile.screen-tile { background: #000; }

.tile video {
  width: 100%; height: 100%; object-fit: contain; background: #000;
}
.tile.camera-tile video { object-fit: cover; }

.tile .tile-label {
  position: absolute; bottom: 8px; left: 8px;
  background: rgba(0,0,0,.55);
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tile .tile-label .fa-microphone-slash,
.tile .tile-label .fa-video-slash { color: var(--danger); }
.tile .tile-label .host-crown { color: #f5c518; margin-left: 2px; }

.tile-fullscreen-btn {
  position: absolute;
  bottom: 8px;
  right: 8px;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: none;
  background: rgba(0,0,0,.55);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .15s, background .15s;
  z-index: 5;
}
.tile-fullscreen-btn:hover { background: rgba(0,0,0,.8); }
.tile.screen-tile:hover .tile-fullscreen-btn,
.tile.screen-tile.is-fullscreen .tile-fullscreen-btn,
.tile.camera-tile:hover .tile-fullscreen-btn { opacity: 1; }

/* Кнопка "выгнать участника" - видна только создателю комнаты, при наведении на чужой тайл камеры.
   Смещена левее кнопки fullscreen, чтобы не перекрываться с ней. */
.tile-kick-btn {
  position: absolute;
  bottom: 8px;
  right: 48px;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: none;
  background: rgba(239, 68, 68, .75);
  color: white;
  font-size: 13px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .15s, background .15s;
  z-index: 6;
}
.tile-kick-btn:hover { background: var(--danger); }
.tile.camera-tile:hover .tile-kick-btn { opacity: 1; }

/* Регулятор громкости на тайле (голос собеседника / звук демонстрации) */
.volume-control {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0,0,0,.55);
  padding: 5px 10px;
  border-radius: 16px;
  opacity: 0;
  transition: opacity .15s, background .15s;
  z-index: 5;
  cursor: default;
}
.volume-control:hover { background: rgba(0,0,0,.8); }
.tile:hover .volume-control,
.tile.screen-tile.is-fullscreen .volume-control { opacity: 1; }

.volume-control i {
  font-size: 12px;
  color: var(--text);
  width: 14px;
  text-align: center;
  flex-shrink: 0;
}

.volume-control input[type="range"] {
  width: 70px;
  height: 4px;
  cursor: pointer;
  accent-color: var(--accent);
  background: transparent;
}

.tile.screen-tile { cursor: pointer; }

.tile.screen-tile:fullscreen,
.tile.screen-tile.is-fullscreen,
.tile.camera-tile:fullscreen,
.tile.camera-tile.is-fullscreen {
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tile.screen-tile:fullscreen video,
.tile.screen-tile.is-fullscreen video,
.tile.camera-tile:fullscreen video,
.tile.camera-tile.is-fullscreen video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.tile .no-video-placeholder {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #262b36, #1a1d24);
}
.avatar-circle {
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700; color: white;
}

/* Sidebar for screen shares when camera grid is present */
.sidebar-participants {
  width: 220px;
  border-left: 1px solid var(--border);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  flex-shrink: 0;
}
.sidebar-participants .tile { aspect-ratio: 16/9; flex-shrink: 0; }

/* ---------- Controls ---------- */
.controls-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.ctrl-btn {
  width: 48px; height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--bg-card);
  color: var(--text);
  font-size: 17px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s, transform .1s;
  position: relative;
}
.ctrl-btn:hover { background: #2a2e38; }
.ctrl-btn:active { transform: scale(.94); }
.ctrl-btn.active { background: var(--accent); }
.ctrl-btn.danger { background: var(--danger); }
.ctrl-btn.danger:hover { background: var(--danger-hover); }
.ctrl-btn.off { background: var(--danger); }
.ctrl-btn:disabled { opacity: .4; cursor: not-allowed; }

.ctrl-btn .badge-count {
  position: absolute; top: -4px; right: -4px;
  background: var(--success);
  color: white;
  font-size: 10px;
  font-weight: 700;
  border-radius: 8px;
  padding: 1px 5px;
  min-width: 16px;
  text-align: center;
}

.ctrl-divider {
  width: 1px; height: 28px; background: var(--border); margin: 0 6px;
}

.leave-btn {
  padding: 0 20px;
  border-radius: 24px;
  background: var(--danger);
  color: white;
  border: none;
  font-weight: 600;
  cursor: pointer;
  height: 48px;
}
.leave-btn:hover { background: var(--danger-hover); }

/* Toast notifications */
.toast-container {
  position: fixed; top: 60px; right: 20px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 1000;
}
.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 13px;
  box-shadow: 0 4px 14px rgba(0,0,0,.4);
  animation: toast-in .2s ease-out;
  max-width: 320px;
}
.toast.error { border-color: var(--danger); color: #ff9a9a; }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Participant list panel */
.panel-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.4);
  display: flex; justify-content: flex-end;
  z-index: 900;
}
.panel {
  width: 300px; height: 100%;
  background: var(--bg-elevated);
  border-left: 1px solid var(--border);
  padding: 16px;
  overflow-y: auto;
}
.panel h3 { margin-top: 0; font-size: 15px; }
.panel-participant {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.panel-participant .avatar-circle { width: 32px; height: 32px; font-size: 13px; }
.panel-close {
  float: right; background: none; border: none; color: var(--text-dim);
  font-size: 18px; cursor: pointer;
}

.hint-text { font-size: 12px; color: var(--text-dim); margin-top: 10px; }

/* ---------- Device settings (выбор камеры/микрофона/динамиков в лобби) ---------- */
.device-settings {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
  text-align: left;
}

.device-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.device-row label {
  flex-shrink: 0;
  width: 90px;
  font-size: 12px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}

.device-row select {
  flex: 1;
  min-width: 0;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 13px;
  outline: none;
  cursor: pointer;
}
.device-row select:focus { border-color: var(--accent); }

.mic-meter {
  width: 44px;
  height: 6px;
  border-radius: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  overflow: hidden;
  flex-shrink: 0;
}
.mic-meter-bar {
  height: 100%;
  width: 0%;
  background: var(--success);
  transition: width .08s linear;
}

.test-sound-btn {
  width: auto !important;
  flex-shrink: 0;
  padding: 8px 12px !important;
  font-size: 12px !important;
  margin-top: 0 !important;
}

@media (max-width: 700px) {
  .sidebar-participants { display: none; }
}