* { margin: 0; padding: 0; box-sizing: border-box; }

/* ── Тёмная пастельная тема ── */
:root {
  --bg-primary: #1e1f2b;
  --bg-secondary: #181924;
  --bg-card: #262838;
  --bg-slot: #222432;
  --bg-input: #2a2c3e;
  --accent: #a89cd6;
  --accent-hover: #bdb2e6;
  --accent-soft: rgba(168, 156, 214, 0.15);
  --text: #dcdde4;
  --text-secondary: #9ea0b0;
  --text-muted: #5e6072;
  --speaking: #8cc5a2;
  --speaking-glow: rgba(140, 197, 162, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --shadow: rgba(0, 0, 0, 0.2);
  --danger: #d98a8a;
  --danger-hover: #c97a7a;
  --avatar-bg: #2f3148;
  --avatar-text: #a89cd6;
  --chat-own-bg: rgba(168, 156, 214, 0.06);
  --chat-author: var(--accent);
  --scrollbar: rgba(255, 255, 255, 0.08);
  --video-bg: #111119;
  --notify: #e06060;
}

/* ── Тёмная ЧБ ── */
[data-theme="mono"] {
  --bg-primary: #1c1c1c; --bg-secondary: #161616; --bg-card: #242424;
  --bg-slot: #202020; --bg-input: #282828;
  --accent: #909090; --accent-hover: #a8a8a8; --accent-soft: rgba(144,144,144,0.1);
  --text: #d4d4d4; --text-secondary: #8a8a8a; --text-muted: #555;
  --speaking: #8a8a8a; --speaking-glow: rgba(138,138,138,0.2);
  --border: rgba(255,255,255,0.06); --shadow: rgba(0,0,0,0.2);
  --danger: #8a8a8a; --danger-hover: #707070;
  --avatar-bg: #2a2a2a; --avatar-text: #888;
  --chat-own-bg: rgba(255,255,255,0.03); --chat-author: #999;
  --scrollbar: rgba(255,255,255,0.06); --video-bg: #111; --notify: #aaa;
}

/* ── Белая тема ── */
[data-theme="light"] {
  --bg-primary: #f4f4f6; --bg-secondary: #fff; --bg-card: #eaeaee;
  --bg-slot: #efeff3; --bg-input: #e8e8ec;
  --accent: #7b6eb5; --accent-hover: #6b5ea5; --accent-soft: rgba(123,110,181,0.1);
  --text: #222230; --text-secondary: #555568; --text-muted: #9999aa;
  --speaking: #6aae82; --speaking-glow: rgba(106,174,130,0.25);
  --border: rgba(0,0,0,0.07); --shadow: rgba(0,0,0,0.04);
  --danger: #c46b6b; --danger-hover: #b45b5b;
  --avatar-bg: #e2ddf0; --avatar-text: #7b6eb5;
  --chat-own-bg: rgba(123,110,181,0.06); --chat-author: var(--accent);
  --scrollbar: rgba(0,0,0,0.08); --video-bg: #1a1a1a; --notify: #e06060;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: var(--bg-primary); color: var(--text);
  height: 100vh; overflow: hidden; -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }

/* ── Вход ── */
#join-screen {
  display: flex; align-items: center; justify-content: center;
  height: 100vh; background: var(--bg-primary);
}
.join-card {
  text-align: center; padding: 48px 44px;
  background: var(--bg-secondary); border-radius: 12px;
  border: 1px solid var(--border); box-shadow: 0 2px 16px var(--shadow);
  min-width: 360px;
}
.logo { font-size: 48px; font-weight: 800; letter-spacing: -2px; color: var(--accent); }
.subtitle { color: var(--text-muted); font-size: 14px; margin-top: 2px; margin-bottom: 32px; }

#nickname-input {
  width: 100%; padding: 14px 16px;
  background: var(--bg-input); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); font-size: 16px; outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
#nickname-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
#nickname-input::placeholder { color: var(--text-muted); }

#join-btn {
  width: 100%; padding: 14px; margin-top: 14px;
  background: var(--accent); color: white; border: none; border-radius: 8px;
  font-size: 16px; font-weight: 600; cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}
#join-btn:hover { background: var(--accent-hover); }
#join-btn:active { transform: scale(0.98); }

/* ── Лобби ── */

#lobby-screen { display: flex; flex-direction: column; height: 100vh; }

.lobby-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 20px; border-bottom: 1px solid var(--border);
  background: var(--bg-secondary); flex-shrink: 0;
}
.lobby-header-left { display: flex; align-items: center; gap: 14px; }
.lobby-header-right { display: flex; align-items: center; gap: 6px; }
.lobby-nick {
  font-size: 13px; font-weight: 600; color: var(--text-secondary);
  background: var(--bg-input); padding: 4px 10px; border-radius: 6px;
}
.lobby-info {
  font-size: 11px; color: var(--text-muted); padding: 3px 8px;
  background: var(--bg-input); border-radius: 5px;
}

.lobby-body {
  flex: 1; display: flex; gap: 0; overflow: hidden;
}

.lobby-rooms {
  flex: 1; display: flex; flex-direction: column;
  border-right: 1px solid var(--border);
}
.lobby-rooms-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
}
.lobby-rooms-header h2 { font-size: 16px; font-weight: 700; color: var(--text); }

.rooms-list {
  flex: 1; overflow-y: auto; padding: 0 20px 20px;
  display: flex; flex-direction: column; gap: 8px;
}
.rooms-empty {
  color: var(--text-muted); text-align: center; padding: 60px 20px;
  font-size: 14px;
}

.room-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px;
  padding: 14px 16px; display: flex; align-items: center; gap: 14px;
  transition: border-color 0.2s, background 0.2s; cursor: pointer;
}
.room-card:hover { border-color: var(--accent); background: var(--accent-soft); }
.room-card-info { flex: 1; min-width: 0; }
.room-card-name {
  font-size: 14px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; gap: 6px;
}
.room-card-name .lock-icon { color: var(--text-muted); flex-shrink: 0; }
.room-card-members {
  font-size: 12px; color: var(--text-secondary); margin-top: 3px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.room-card-count {
  font-size: 11px; color: var(--text-muted); background: var(--bg-input);
  padding: 2px 8px; border-radius: 10px; white-space: nowrap;
}
.room-join-btn {
  padding: 6px 14px; border-radius: 6px; border: none;
  background: var(--accent); color: white; font-size: 12px;
  font-weight: 600; cursor: pointer; flex-shrink: 0;
  transition: background 0.2s;
}
.room-join-btn:hover { background: var(--accent-hover); }

/* Sidebar устройств */
.lobby-sidebar {
  width: 300px; flex-shrink: 0; padding: 16px;
  background: var(--bg-secondary); overflow-y: auto;
}
.device-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px;
}
.device-card h3 { font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 12px; }
.device-row { display: flex; gap: 8px; }

.device-preview {
  margin-top: 12px; border-radius: 8px; overflow: hidden;
  background: var(--bg-slot);
}
.device-preview video {
  width: 100%; border-radius: 8px; display: block;
  background: var(--video-bg);
}
.mic-level-bar {
  height: 4px; background: var(--bg-input); border-radius: 2px;
  margin: 10px 0 4px; overflow: hidden;
}
.mic-level-fill {
  height: 100%; width: 0%; background: var(--speaking);
  border-radius: 2px; transition: width 0.08s ease-out;
}
.mic-level-label { font-size: 10px; color: var(--text-muted); }

/* Кнопки */
.btn-accent {
  padding: 8px 16px; border-radius: 8px; border: none;
  background: var(--accent); color: white; font-size: 13px;
  font-weight: 600; cursor: pointer; transition: background 0.2s;
}
.btn-accent:hover { background: var(--accent-hover); }
.btn-outline {
  padding: 8px 14px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg-input);
  color: var(--text-secondary); font-size: 12px; font-weight: 500;
  cursor: pointer; display: flex; align-items: center; gap: 6px;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  flex: 1;
}
.btn-outline:hover { border-color: var(--accent); color: var(--text); }
.btn-outline.active { border-color: var(--speaking); color: var(--speaking); background: rgba(140,197,162,0.1); }

/* Модалы */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.modal-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: 12px; padding: 28px; min-width: 340px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.modal-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 16px; color: var(--text); }
.modal-card input[type="text"] {
  width: 100%; padding: 11px 14px; margin-bottom: 10px;
  background: var(--bg-input); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); font-size: 14px; outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.modal-card input[type="text"]:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.modal-card input[type="text"]::placeholder { color: var(--text-muted); }
.checkbox-row {
  display: flex; align-items: center; gap: 8px; margin-bottom: 10px;
  font-size: 13px; color: var(--text-secondary); cursor: pointer;
}
.checkbox-row input { accent-color: var(--accent); }
.modal-buttons { display: flex; gap: 8px; margin-top: 16px; justify-content: flex-end; }
.pw-error { color: var(--danger); font-size: 12px; margin-bottom: 6px; }

/* ── Комната ── */
#room-screen { display: flex; flex-direction: column; height: 100vh; }
#room-name-display {
  font-size: 13px; font-weight: 600; color: var(--text-secondary);
  background: var(--bg-input); padding: 3px 10px; border-radius: 6px;
}

header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 16px; border-bottom: 1px solid var(--border);
  background: var(--bg-secondary); flex-shrink: 0;
}
.header-left { display: flex; align-items: center; gap: 14px; }
.logo-small { font-size: 20px; font-weight: 800; letter-spacing: -1px; color: var(--accent); }
#user-count { color: var(--text-muted); font-size: 12px; font-weight: 500; }
.header-right { display: flex; align-items: center; gap: 4px; }
.header-sep { width: 1px; height: 20px; background: var(--border); margin: 0 6px; }

.view-modes { display: flex; gap: 2px; }
.view-btn, .theme-btn {
  width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg-input); color: var(--text-secondary); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  position: relative; padding: 0;
}
.view-btn:hover, .theme-btn:hover { background: var(--bg-card); color: var(--text); border-color: var(--accent); }
.view-btn.active, .theme-btn.active { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }

/* Красная точка чата */
.chat-dot {
  position: absolute; top: 4px; right: 4px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--notify);
  animation: dotPulse 2s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

#main-area { flex: 1; display: flex; overflow: hidden; min-height: 0; }

/* ── Сетка ── */
#grid {
  flex: 1; display: grid; gap: 3px; padding: 3px;
  background: var(--bg-primary);
  transition: all 0.3s ease;
}

/* Layout: Grid (2x2) */
#grid.layout-grid {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
}

/* Layout: Duo — собеседники сверху, я маленький снизу */
#grid.layout-duo {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 140px;
}
#grid.layout-duo .slot.is-local {
  grid-column: 1 / -1;
  justify-self: center;
  width: 240px;
}
#grid.layout-duo .slot.is-local .avatar { width: 48px; height: 48px; font-size: 18px; }
#grid.layout-duo .slot.is-local .slot-video { object-fit: cover; border-radius: 8px; }
/* Скрыть пустые слоты в duo — если только 1 собеседник */
#grid.layout-duo .slot.empty { display: none; }

/* Layout: Speaker — активный спикер большой, остальные справа */
#grid.layout-speaker {
  display: flex;
  gap: 3px;
}
#grid.layout-speaker .slot.is-active-speaker {
  flex: 1;
  min-width: 0;
}
#grid.layout-speaker .sidebar-stack {
  width: 200px;
  flex-shrink: 0;
  display: flex; flex-direction: column; gap: 3px;
}
#grid.layout-speaker .sidebar-stack .slot {
  width: 100%;
  aspect-ratio: 16 / 9;
  flex: none;
}
#grid.layout-speaker .sidebar-stack .slot .avatar { width: 40px; height: 40px; font-size: 16px; }
#grid.layout-speaker .sidebar-stack .slot .slot-video { object-fit: contain; }
#grid.layout-speaker .sidebar-stack .slot.empty { opacity: 0.35; display: flex; }

/* ── Слот ── */
.slot {
  background: var(--bg-slot);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  border-radius: 8px;
  border: 2px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.slot.empty { background: var(--bg-slot); opacity: 0.35; }
.slot.speaking {
  border-color: var(--speaking);
  box-shadow: 0 0 20px var(--speaking-glow), inset 0 0 20px var(--speaking-glow);
}
.slot.is-muted .avatar { opacity: 0.4; }

/* Хедер слота */
.slot-header {
  position: absolute; top: 0; left: 0; right: 0;
  padding: 10px 14px; display: flex; align-items: center; gap: 8px; z-index: 2;
}
.slot.has-video .slot-header {
  background: linear-gradient(to bottom, rgba(0,0,0,0.5) 0%, transparent 100%);
}
.slot-nickname { font-size: 13px; font-weight: 600; color: var(--text); }
.slot.has-video .slot-nickname { color: #fff; text-shadow: 0 1px 4px rgba(0,0,0,0.6); }

.muted-badge {
  display: none; font-size: 10px; color: var(--danger);
  background: rgba(217,138,138,0.15); padding: 2px 7px; border-radius: 4px; font-weight: 600;
}
.slot.is-muted .muted-badge { display: inline-block; }

/* Центр слота */
.slot-center { flex: 1; display: flex; align-items: center; justify-content: center; width: 100%; }
.slot-avatar { display: flex; align-items: center; justify-content: center; }
.avatar {
  width: 96px; height: 96px; border-radius: 50%;
  background: var(--avatar-bg);
  display: flex; align-items: center; justify-content: center;
  font-size: 36px; font-weight: 700; color: var(--avatar-text);
  text-transform: uppercase; transition: opacity 0.2s;
}

.slot-video {
  width: 100%; height: 100%; object-fit: contain;
  position: absolute; top: 0; left: 0;
  background: var(--video-bg); border-radius: 6px;
}

/* ── Чат ── */
#chat-panel {
  width: 300px; background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  display: flex; flex-direction: column; flex-shrink: 0;
}
#chat-header {
  padding: 12px 16px; font-size: 12px; font-weight: 600;
  color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.8px;
  border-bottom: 1px solid var(--border);
}
#chat-messages {
  flex: 1; overflow-y: auto; padding: 12px 14px;
  display: flex; flex-direction: column; gap: 10px;
}
.chat-msg { padding: 4px 0; }
.chat-msg.own .chat-msg-author { color: var(--accent); }
.chat-msg.system { text-align: center; padding: 2px 0; }
.chat-msg.system .chat-msg-text { color: var(--text-muted); font-size: 11px; font-style: italic; }
.chat-msg-header { display: flex; align-items: baseline; gap: 6px; margin-bottom: 2px; }
.chat-msg-author { font-size: 12px; font-weight: 600; color: var(--chat-author); }
.chat-msg-time { font-size: 10px; color: var(--text-muted); }
.chat-msg-text { font-size: 13px; line-height: 1.45; word-break: break-word; color: var(--text); }

#chat-input-area {
  display: flex; gap: 8px; padding: 10px 12px;
  border-top: 1px solid var(--border);
}
#chat-input {
  flex: 1; padding: 9px 12px;
  background: var(--bg-input); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); font-size: 13px; outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
#chat-input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
#chat-input::placeholder { color: var(--text-muted); }

#chat-send-btn {
  width: 34px; height: 34px; border-radius: 8px; border: none;
  background: var(--accent); color: white; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: background 0.2s, transform 0.1s;
}
#chat-send-btn:hover { background: var(--accent-hover); }
#chat-send-btn:active { transform: scale(0.95); }

/* ── Subway panel ── */

#subway-panel {
  width: 280px; flex-shrink: 0;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
}
#subway-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 12px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.subway-close-btn {
  background: none; border: none; color: var(--text-muted);
  font-size: 18px; cursor: pointer; padding: 0 4px;
  line-height: 1; transition: color 0.2s;
}
.subway-close-btn:hover { color: var(--text); }
#subway-video {
  width: 100%; flex: 1; object-fit: contain;
  background: #000; min-height: 0;
}

/* ── Футер ── */
footer {
  display: flex; align-items: center; justify-content: center;
  gap: 10px; padding: 12px;
  border-top: 1px solid var(--border); background: var(--bg-secondary); flex-shrink: 0;
}
.control-btn {
  width: 46px; height: 46px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg-input); color: var(--text-secondary); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.1s;
}
.control-btn:hover { background: var(--bg-card); border-color: var(--text-muted); color: var(--text); }
.control-btn:active { transform: scale(0.95); }
.control-btn.muted { background: var(--danger); color: white; border-color: var(--danger); }
.control-btn.muted:hover { background: var(--danger-hover); border-color: var(--danger-hover); }
.control-btn.active { background: var(--speaking); color: white; border-color: var(--speaking); }
.control-btn.disconnect { background: var(--danger); color: white; border-color: var(--danger); }
.control-btn.disconnect:hover { background: var(--danger-hover); border-color: var(--danger-hover); }

/* ── Скроллбар ── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 3px; }

/* ── Мобильный ── */
@media (max-width: 768px) {
  #main-area { flex-direction: column; }
  #chat-panel { width: 100%; max-height: 40vh; border-left: none; border-top: 1px solid var(--border); }
  .avatar { width: 64px; height: 64px; font-size: 26px; }
  .join-card { min-width: auto; margin: 16px; }
  .view-modes { display: none; }
  #grid.layout-speaker { grid-template-columns: 1fr; }
  .lobby-body { flex-direction: column; }
  .lobby-sidebar { width: 100%; border-top: 1px solid var(--border); }
  .lobby-rooms { border-right: none; }
  .lobby-header-right .lobby-info { display: none; }
}