/* ========================================
   一起看视频 - 精美UI样式
   设计风格：暗色玻璃拟态 + 渐变动画
   ======================================== */

/* ========== CSS变量 ========== */
:root {
  --primary: #818cf8;
  --primary-dark: #6366f1;
  --primary-glow: rgba(129, 140, 248, 0.3);
  --accent: #a78bfa;
  --danger: #f87171;
  --danger-dark: #ef4444;
  --success: #34d399;
  --success-dark: #22c55e;
  --warning: #fbbf24;

  --bg-deep: #070b14;
  --bg-base: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-solid: #1e293b;
  --bg-input: rgba(51, 65, 85, 0.6);
  --bg-hover: rgba(71, 85, 105, 0.5);

  --text: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;

  --border: rgba(71, 85, 105, 0.5);
  --border-focus: rgba(129, 140, 248, 0.5);

  --glass-bg: rgba(15, 23, 42, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 重置 ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg-deep);
  color: var(--text);
  min-height: 100%;
  overflow-x: hidden;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

input, button, textarea {
  font-family: inherit;
  font-size: 15px;
}

input:focus, button:focus {
  outline: none;
}

.hidden { display: none !important; }
.view { display: none; }
.view.active { display: flex; }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ========== 动态背景 ========== */
.bg-animation {
  position: fixed;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #6366f1, transparent 70%);
  top: -10%;
  left: -5%;
  animation-delay: 0s;
}

.orb-2 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, #8b5cf6, transparent 70%);
  bottom: -10%;
  right: -5%;
  animation-delay: -7s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #a78bfa, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -40px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(15px, 30px) scale(1.02); }
}

/* ========== 通用按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all var(--transition);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn:hover::after { opacity: 1; }
.btn:active { transform: scale(0.97); }

.btn-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}
.btn-chip:hover {
  background: var(--bg-hover);
  color: var(--text);
  border-color: var(--border-focus);
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  z-index: 9999;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  animation: toastIn 0.35s ease forwards;
  max-width: 90vw;
}
.toast:not(.success):not(.error) {
  background: var(--glass-bg);
  color: var(--text);
}
.toast.success {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
  border-color: rgba(34, 197, 94, 0.3);
}
.toast.error {
  background: rgba(248, 113, 113, 0.15);
  color: var(--danger);
  border-color: rgba(248, 113, 113, 0.3);
}

@keyframes toastIn {
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ========================================
   首页
   ======================================== */
#home-view {
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 24px;
  position: relative;
  z-index: 1;
}

.home-card {
  width: 100%;
  max-width: 420px;
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  box-shadow: var(--glass-shadow);
  animation: cardIn 0.6s ease;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(20px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Logo区 */
.logo-section {
  text-align: center;
  margin-bottom: 32px;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  margin-bottom: 16px;
  animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.2); }
  50% { box-shadow: 0 0 0 12px rgba(99, 102, 241, 0); }
}

.app-title {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.app-subtitle {
  color: var(--text-muted);
  font-size: 15px;
}

/* 表单区 */
.form-section {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 14px;
  display: flex;
  align-items: center;
  color: var(--text-muted);
  pointer-events: none;
  transition: color var(--transition);
  z-index: 1;
}

.input-group input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 15px;
  transition: all var(--transition);
}

.input-group input::placeholder {
  color: var(--text-muted);
}

.input-group input:focus {
  border-color: var(--border-focus);
  background: rgba(51, 65, 85, 0.8);
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.1);
}

.input-group input:focus ~ .input-icon,
.input-group:focus-within .input-icon {
  color: var(--primary);
}

.input-group-lg input {
  padding: 16px 16px 16px 46px;
  font-size: 15px;
}

/* 创建房间按钮 */
.btn-create {
  width: 100%;
  padding: 15px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  font-size: 16px;
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
  margin-top: 4px;
}
.btn-create:hover {
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.45);
  transform: translateY(-1px);
}
.btn-create:active {
  transform: translateY(0) scale(0.98);
}

/* 分隔线 */
.divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 4px 0;
}
.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}
.divider span {
  color: var(--text-muted);
  font-size: 13px;
  white-space: nowrap;
}

/* 加入房间行 */
.join-row {
  display: flex;
  gap: 10px;
}
.join-row .input-group {
  flex: 1;
}
.join-row .btn-join {
  padding: 14px 20px;
  background: var(--bg-hover);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  flex-shrink: 0;
}
.join-row .btn-join:hover {
  background: rgba(71, 85, 105, 0.8);
  border-color: var(--border-focus);
}

/* 特性展示 */
.features {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--glass-border);
}

.feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 12px;
}
.feature svg {
  opacity: 0.6;
}

/* ========================================
   房间页
   ======================================== */
#room-view {
  flex-direction: column;
  height: 100vh;
  position: relative;
  z-index: 1;
}

/* 顶部栏 */
.room-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
  z-index: 10;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.room-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}
.room-badge strong {
  color: var(--primary);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 1.5px;
  font-variant-numeric: tabular-nums;
}

.online-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--success);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  position: relative;
}
.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid var(--success);
  animation: pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0; transform: scale(1.5); }
}

/* 房主标识 */
.owner-badge {
  padding: 4px 10px;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #fff;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 8px rgba(251, 191, 36, 0.3);
}

.btn-leave {
  padding: 7px 14px;
  background: rgba(248, 113, 113, 0.1);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.2);
  border-radius: 20px;
  font-size: 13px;
}
.btn-leave:hover {
  background: rgba(248, 113, 113, 0.2);
  border-color: rgba(248, 113, 113, 0.4);
}

/* 主内容区 */
.room-main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ========== 视频区 ========== */
.video-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg-deep);
}

.video-wrapper {
  position: relative;
  width: 100%;
  background: #000;
  aspect-ratio: 16 / 9;
  max-height: calc(100vh - 130px);
  overflow: hidden;
}

.video-wrapper video,
.video-wrapper .video-js,
.video-wrapper .qin-player-container {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.video-wrapper .qin-player-container {
  position: relative;
  min-width: 100%;
  min-height: 100%;
}

/* 隐藏btjson自带的加载界面（由适配器管理） */
.btjson #loading-box {
  display: none !important;
}

/* btjson播放器需要容器有正确的尺寸 */
.video-wrapper .qin-player-container.btjson {
  width: 100% !important;
  height: 100% !important;
}

/* 防止 qinPlayer 进入固定定位的网页全屏模式 */
.video-wrapper .qin-player-container > div[class*="webscreen"],
.video-wrapper .qin-player-container > div[class*="nolight"] {
  position: relative !important;
  left: auto !important;
  top: auto !important;
  width: 100% !important;
  height: 100% !important;
  z-index: auto !important;
}

/* ========== 弹幕列表面板（覆盖btjson默认fixed定位） ========== */
.video-wrapper .btjson-danmu {
  position: absolute !important;
  right: 10px !important;
  top: 40px !important;
  width: 280px !important;
  height: calc(100% - 100px) !important;
  z-index: 100 !important;
  border-radius: 8px !important;
  background: rgba(15, 23, 42, 0.92) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4) !important;
}

.video-wrapper .btjson-danmu .btjson-watching {
  padding: 10px 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.video-wrapper .btjson-danmu .btjson-watching span {
  color: var(--primary);
  font-weight: 600;
}

.video-wrapper .btjson-danmu .btjson-list {
  display: flex;
  padding: 0 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.video-wrapper .btjson-danmu .btjson-list li {
  padding: 8px 6px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
}

.video-wrapper .btjson-danmu .btjson-list li:nth-child(1) {
  width: 70px !important;
}

.video-wrapper .btjson-danmu .btjson-list li:nth-child(2) {
  flex: 1;
  text-align: left !important;
}

.video-wrapper .btjson-danmu .list-show {
  overflow-y: auto;
  height: calc(100% - 80px);
}

.video-wrapper .btjson-danmu .list-show .danmuku-list {
  display: flex;
  align-items: center;
  padding: 6px 4px;
  cursor: pointer;
  transition: background 0.15s ease;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.video-wrapper .btjson-danmu .list-show .danmuku-list:hover {
  background: rgba(129, 140, 248, 0.12);
}

.video-wrapper .btjson-danmu .list-show .danmuku-list li {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  padding: 4px 6px;
  list-style: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.video-wrapper .btjson-danmu .list-show .danmuku-list li:first-child {
  width: 70px;
  color: var(--primary);
  flex-shrink: 0;
}

.video-wrapper .btjson-danmu .list-show .danmuku-list li:nth-child(2) {
  flex: 1;
  min-width: 0;
}

.video-wrapper .btjson-danmu .list-show .danmuku-list li:last-child {
  width: 60px;
  flex-shrink: 0;
  color: rgba(255, 255, 255, 0.4);
  font-size: 11px;
}

/* 移动端隐藏弹幕列表图标 */
@media (max-width: 768px) {
  .video-wrapper .btjson-list-icon {
    display: none !important;
  }
}

/* ========== 备用弹幕样式（当btjson弹幕系统不可用时） ========== */
.btjson-danmaku-item.btjson-danmaku-right {
  position: absolute;
  white-space: nowrap;
  font-size: 16px;
  font-weight: 500;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  z-index: 50;
}

/* ========== 底部弹幕发送面板（参考 B 站全屏样式） ========== */
.danmu-send-panel {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.92), rgba(0, 0, 0, 0.78));
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 10000;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-sizing: border-box;
  transform: translateY(0);
  opacity: 1;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease;
}

.danmu-send-panel.hidden {
  display: none;
}

/* 颜色选择行 */
.danmu-color-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px 6px;
}

.danmu-color-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  flex-shrink: 0;
}

.danmu-colors {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.danmu-color-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.15s ease;
  position: relative;
}

.danmu-color-dot:hover {
  transform: scale(1.2);
}

.danmu-color-dot.active {
  border-color: rgba(99, 102, 241, 0.9);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.4);
}

/* 输入行 */
.danmu-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px 12px;
}

.danmu-input-row input {
  flex: 1;
  height: 36px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  padding: 0 40px 0 16px;
  color: #fff;
  font-size: 14px;
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.danmu-input-row input::placeholder {
  color: rgba(255, 255, 255, 0.35);
  font-size: 13px;
}

.danmu-input-row input:focus {
  border-color: rgba(99, 102, 241, 0.6);
  background: rgba(255, 255, 255, 0.14);
}

.danmu-char-count {
  position: absolute;
  right: 90px;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.3);
  pointer-events: none;
  user-select: none;
}

.danmu-input-row .btn-send {
  height: 34px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 17px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  border: none;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.danmu-input-row .btn-send:hover {
  background: linear-gradient(135deg, #7c7ff7, #9d7cfb);
  transform: scale(1.03);
}

.danmu-input-row .btn-send:active {
  transform: scale(0.97);
}

.danmu-input-row .btn-send svg {
  display: none;
}

/* 移动端适配 */
@media (max-width: 639px) {
  .danmu-color-row {
    padding: 8px 12px 4px;
    gap: 8px;
  }

  .danmu-color-dot {
    width: 18px;
    height: 18px;
  }

  .danmu-input-row {
    padding: 4px 12px 10px;
    gap: 8px;
  }

  .danmu-input-row input {
    height: 34px;
    font-size: 13px;
    padding: 0 36px 0 12px;
  }

  .danmu-char-count {
    right: 78px;
    font-size: 10px;
  }

  .danmu-input-row .btn-send {
    height: 32px;
    padding: 0 14px;
    font-size: 12px;
  }
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.9));
}

.placeholder-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  color: var(--primary);
  animation: placeholderFloat 4s ease-in-out infinite;
}

@keyframes placeholderFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.video-placeholder p {
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 500;
}

.placeholder-hint {
  color: var(--text-muted);
  font-size: 13px;
}

/* 视频URL输入栏 */
/* ========== 播放列表区域 ========== */
.playlist-panel {
  background: var(--bg-card-solid);
  border-top: 1px solid var(--glass-border);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.playlist-section-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.playlist-section-title svg {
  color: var(--primary);
}

.playlist-now-card {
  position: relative;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 12px 14px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--radius);
}

.playlist-now-card .btn-add-wrap {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
}

.playlist-now-playing {
  flex: 1;
  min-width: 0;
}

.now-playing-label,
.next-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.now-playing-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.now-playing-progress {
  font-size: 13px;
  color: var(--primary);
  margin-top: 4px;
  font-weight: 500;
}

.playlist-next {
  min-width: 120px;
  max-width: 35%;
  padding-left: 14px;
  border-left: 1px solid rgba(99, 102, 241, 0.15);
}

.next-title {
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist-list {
  max-height: 160px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.playlist-add-bar {
  display: flex;
  gap: 10px;
}

.playlist-add-bar .input-group {
  flex: 1;
}

.btn-add-wrap {
  display: flex;
  justify-content: center;
}

.btn-add-video-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 24px;
  border: 2px dashed var(--glass-border);
  background: rgba(255,255,255,0.4);
  color: var(--text-secondary);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-add-video-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(99, 102, 241, 0.05);
}

/* 添加视频弹窗 */
.add-video-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}
.add-video-modal.hidden {
  display: none;
}
.add-video-modal-content {
  width: 90%;
  max-width: 420px;
  background: var(--bg-card-solid);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.25s ease;
}
.add-video-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.add-video-modal-header h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}
.btn-close-modal {
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-close-modal:hover {
  background: var(--bg-hover);
  color: var(--text);
}
.add-video-modal-hint {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 16px 0;
}
.add-video-modal-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.add-video-modal-body .btn-load {
  width: 100%;
  padding: 14px;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* ========== 昵称输入弹窗 ========== */
.nickname-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}
.nickname-modal.hidden {
  display: none;
}
.nickname-modal-content {
  width: 90%;
  max-width: 380px;
  background: var(--bg-card-solid);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.25s ease;
}
.nickname-modal-header {
  text-align: center;
  margin-bottom: 8px;
}
.nickname-modal-header h4 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}
.nickname-modal-hint {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 20px 0;
  text-align: center;
}
.nickname-modal-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.nickname-modal-body .btn-load {
  width: 100%;
  padding: 14px;
}

.btn-load {
  padding: 14px 20px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.25);
  flex-shrink: 0;
}
.btn-load:hover {
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

/* 同步状态 */
.sync-status {
  padding: 8px 16px;
  font-size: 13px;
  text-align: center;
  background: var(--bg-card-solid);
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
  animation: fadeSlideIn 0.3s ease;
}
.sync-status.syncing { color: var(--primary); }
.sync-status.synced { color: var(--success); }

/* 播放器内部提示弹窗 */
.player-toast {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 18px;
  font-size: 14px;
  color: #fff;
  background: rgba(0, 0, 0, 0.65);
  border-radius: 20px;
  pointer-events: none;
  z-index: 100;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.3s ease;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}
.player-toast.show {
  opacity: 1;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== 聊天区 ========== */
.chat-panel {
  width: 320px;
  display: flex;
  flex-direction: column;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid var(--glass-border);
  flex-shrink: 0;
  transition: width var(--transition-slow);
}
.chat-panel.collapsed {
  width: 0;
  overflow: hidden;
  border: none;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
}
.chat-header h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* 聊天消息区 */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* 消息气泡 */
.chat-msg {
  max-width: 95%;
  padding: 10px 14px;
  border-radius: var(--radius) var(--radius) var(--radius) 4px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  animation: msgIn 0.25s ease;
  align-self: center;
  width: fit-content;
  text-align: left;
  word-break: break-all;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-msg .msg-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}

.chat-msg .msg-avatar {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.chat-msg .msg-nickname {
  color: var(--primary);
  font-weight: 600;
  font-size: 12px;
}

.chat-msg .msg-time {
  color: var(--text-muted);
  font-size: 11px;
  margin-left: auto;
}

.chat-msg .msg-text {
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  word-break: break-word;
}

.chat-msg.system {
  background: transparent;
  border: none;
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  padding: 4px 0;
  max-width: 100%;
  align-self: center;
}

/* 聊天输入栏 */
.chat-input-bar {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.chat-input-bar input {
  flex: 1;
  padding: 11px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  transition: all var(--transition);
}
.chat-input-bar input::placeholder { color: var(--text-muted); }
.chat-input-bar input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.08);
}

.btn-send {
  width: 44px;
  height: 44px;
  padding: 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  border-radius: var(--radius);
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}
.btn-send:hover {
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

/* ========== 移动端聊天弹窗 ========== */
.chat-modal {
  position: fixed;
  inset: 0;
  background: var(--bg-base);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(100%); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  border-bottom: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.chat-modal-header h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
}

/* 移动端聊天悬浮按钮 */
.btn-chat-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  border: none;
  cursor: pointer;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
  transition: all var(--transition);
}
.btn-chat-float:active {
  transform: scale(0.9);
}
.btn-chat-float.has-new::after {
  content: '';
  position: absolute;
  top: -2px;
  right: -2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--danger);
  border: 2px solid var(--bg-deep);
  animation: newMsg 1s ease infinite;
}

@keyframes newMsg {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

/* ========================================
   响应式
   ======================================== */

/* 平板 */
@media (max-width: 1024px) {
  .chat-panel { width: 280px; }
}

/* 手机 */
@media (max-width: 768px) {
  .room-main { flex-direction: column; }
  .chat-panel { display: none; }
  .btn-chat-float { display: flex; }
  .chat-modal.hidden { display: none; }

  .video-wrapper { max-height: 50vh; }

  .playlist-panel {
    padding: 10px 12px;
  }
  .playlist-now-card {
    flex-direction: column;
    gap: 10px;
    padding: 10px 12px;
  }
  .playlist-now-card .btn-add-wrap {
    position: static;
    transform: none;
    align-self: center;
    order: 2;
  }
  .playlist-now-card .playlist-now-playing {
    order: 1;
  }
  .playlist-now-card .playlist-next {
    order: 3;
  }
  .playlist-next {
    max-width: 100%;
    padding-left: 0;
    padding-top: 10px;
    border-left: none;
    border-top: 1px solid rgba(99, 102, 241, 0.15);
  }
  .playlist-list {
    max-height: 120px;
  }
  .room-header {
    padding: 8px 12px;
    gap: 6px;
  }
  .room-badge {
    padding: 5px 10px;
    font-size: 12px;
  }
  .room-badge strong {
    font-size: 13px;
  }

  .home-card {
    padding: 32px 24px;
  }
  .app-title { font-size: 24px; }
}

/* 超小屏幕 */
@media (max-width: 380px) {
  .home-card { padding: 28px 20px; }
  .app-title { font-size: 22px; }
  .features { gap: 16px; }
  .features .feature { font-size: 11px; }
  .join-row { flex-direction: column; gap: 8px; }
  .header-left, .header-right { gap: 6px; }
}

/* ========== 续播提示框样式 ========== */
.resume-dialog {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.7);
  z-index: 1000;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.resume-content {
  background: rgba(30, 30, 30, 0.95);
  border-radius: 12px;
  padding: 24px 32px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.resume-content p {
  color: #fff;
  font-size: 16px;
  margin: 0 0 20px 0;
  line-height: 1.5;
}

.resume-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.btn-resume-yes,
.btn-resume-no {
  padding: 10px 24px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-resume-yes {
  background: linear-gradient(135deg, #818cf8, #6366f1);
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-resume-yes:hover {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
  transform: translateY(-1px);
}

.btn-resume-no {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-resume-no:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
}

/* ========== 加载状态样式 ========== */
.loading-status {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.8);
  z-index: 999;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: opacity 0.3s ease;
}

.loading-status.fade-out {
  opacity: 0;
}

.loading-status-content {
  text-align: center;
  color: #fff;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top: 3px solid #818cf8;
  border-radius: 50%;
  margin: 0 auto 20px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

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

.status-item {
  font-size: 14px;
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.status-item.active {
  opacity: 1;
  color: #818cf8;
}