/** 
 * CloudVod 播放器样式 - 高级美化版
 * 版本: 2.0
 * 设计系统: 与前后台设计系统统一
 */

/* ===== 播放器容器 ===== */
.cloudvod-player-wrapper {
  position: relative;
  width: 100%;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  margin-bottom: 20px;
}

.cloudvod-player {
  width: 100%;
  height: auto !important;
  min-height: 0 !important;
  display: block;
}

/* ===== 播放器加载状态 ===== */
.cloudvod-player-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: #fff;
}

.cloudvod-player-loading .spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top-color: #6366f1;
  border-radius: 50%;
  animation: cvPlayerSpin 0.8s linear infinite;
  margin: 0 auto 16px;
}

@keyframes cvPlayerSpin {
  to {
    transform: rotate(360deg);
  }
}

.cloudvod-player-loading p {
  font-size: 14px;
  opacity: 0.8;
}

/* ===== 播放器错误状态 ===== */
.cloudvod-player-error {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: #fff;
  background: rgba(239, 68, 68, 0.9);
  padding: 24px 32px;
  border-radius: 12px;
  max-width: 400px;
}

.cloudvod-player-error h3 {
  font-size: 18px;
  margin: 0 0 8px;
  color: #fff;
}

.cloudvod-player-error p {
  font-size: 14px;
  opacity: 0.9;
  margin: 0;
}

/* ===== 播放器控件美化 ===== */
.cloudvod-player-wrapper video::-webkit-media-controls-panel {
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
}

.cloudvod-player-wrapper video::-webkit-media-controls-play-button,
.cloudvod-player-wrapper video::-webkit-media-controls-mute-button {
  filter: brightness(0) invert(1);
}

/* ===== 课时导航（播放器下方）===== */
.cloudvod-lesson-nav {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  margin: 24px 0;
  padding: 16px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.cloudvod-lesson-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.cloudvod-lesson-nav a:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
  color: #fff;
}

.cloudvod-lesson-nav a.prev-lesson::before {
  content: '←';
  font-size: 16px;
}

.cloudvod-lesson-nav a.next-lesson::after {
  content: '→';
  font-size: 16px;
}

/* ===== 播放器响应式 ===== */
@media (max-width: 768px) {
  .cloudvod-player-wrapper {
    border-radius: 8px;
    margin-bottom: 16px;
  }
  
  .cloudvod-lesson-nav {
    flex-direction: column;
    gap: 8px;
  }
  
  .cloudvod-lesson-nav a {
    text-align: center;
    justify-content: center;
  }
}

/* ===== 播放器全屏模式 ===== */
.cloudvod-player-wrapper:fullscreen {
  border-radius: 0;
}

.cloudvod-player-wrapper:fullscreen video {
  width: 100%;
  height: 100%;
}

/* ===== 播放器画中画模式 ===== */
.cloudvod-player-wrapper [data-pip="true"] {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 320px;
  height: 180px;
  z-index: 9999;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-radius: 12px;
}

/* ===== 播放进度条美化（如果自定义）===== */
.cloudvod-custom-progress {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
  margin: 12px 0;
}

.cloudvod-custom-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  border-radius: 2px;
  transition: width 0.1s linear;
}

.cloudvod-custom-progress:hover {
  height: 6px;
}

.cloudvod-custom-progress:hover .cloudvod-custom-progress-bar {
  background: linear-gradient(90deg, #818cf8, #a78bfa);
}

/* ===== 播放器字幕样式 ===== */
.cloudvod-player-wrapper video::cue {
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  font-size: 16px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  padding: 4px 8px;
  border-radius: 4px;
}

/* ===== 播放器水印 ===== */
.cloudvod-watermark {
  position: absolute;
  bottom: 60px;
  right: 20px;
  background: transparent;
  color: rgba(255, 255, 255, 0.72);
  padding: 0;
  border-radius: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
  pointer-events: none;
  z-index: 10;
}

/* ===== 播放器logo ===== */
.cloudvod-player-logo {
  position: absolute;
  top: 20px;
  right: 20px;
  max-width: 120px;
  max-height: 40px;
  opacity: 0.8;
  transition: opacity 0.3s;
  z-index: 10;
}

.cloudvod-player-logo:hover {
  opacity: 1;
}

/* ===== 播放器提示信息 ===== */
.cloudvod-player-tooltip {
  position: absolute;
  background: rgba(0, 0, 0, 0.9);
  color: #fff;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  pointer-events: none;
  z-index: 100;
  white-space: nowrap;
  animation: cvFadeIn 0.2s ease-out;
}

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

/* ===== 多清晰度切换 ===== */
.cloudvod-quality-selector {
  position: absolute;
  bottom: 60px;
  right: 20px;
  background: rgba(0, 0, 0, 0.9);
  border-radius: 8px;
  padding: 8px;
  z-index: 50;
}

.cloudvod-quality-option {
  display: block;
  width: 100%;
  padding: 8px 16px;
  color: #fff;
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  border-radius: 4px;
  font-size: 13px;
  transition: background 0.2s;
}

.cloudvod-quality-option:hover {
  background: rgba(255, 255, 255, 0.1);
}

.cloudvod-quality-option.active {
  color: #818cf8;
  font-weight: 600;
}

/* ===== 播放速度控制 ===== */
.cloudvod-playback-speed {
  position: absolute;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.9);
  border-radius: 8px;
  padding: 8px;
  display: flex;
  gap: 4px;
  z-index: 50;
}

.cloudvod-speed-option {
  padding: 6px 12px;
  color: #fff;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}

.cloudvod-speed-option:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.4);
}

.cloudvod-speed-option.active {
  background: #6366f1;
  border-color: #6366f1;
  font-weight: 600;
}

/* ===== 播放器暗色主题 - .dark-theme 类 ===== */
.dark-theme .cloudvod-lesson-nav {
  background: #1f2937;
  border-color: #374151;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

.dark-theme .cloudvod-player {
  background: #000;
}

/* ===== prefers-color-scheme: dark 回退 ===== */
@media (prefers-color-scheme: dark) {
  .cloudvod-lesson-nav {
    background: #1f2937;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  }
}

/* ===== 打印样式 ===== */
@media print {
  .cloudvod-player-wrapper,
  .cloudvod-lesson-nav {
    display: none;
  }
}