/* Video Player */
.player-container {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
  aspect-ratio: 16/9;
}

.player-container video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Watermark overlay */
.watermark-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.watermark-text {
  font-family: var(--font-body);
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.06);
  transform: rotate(-30deg);
  white-space: nowrap;
  user-select: none;
  letter-spacing: 8px;
}

/* Tiled watermark for full coverage */
.watermark-grid {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  display: flex;
  flex-wrap: wrap;
  gap: 80px;
  transform: rotate(-30deg);
  pointer-events: none;
}

.watermark-grid span {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.04);
  white-space: nowrap;
  user-select: none;
}

/* DevTools warning overlay */
.devtools-warning {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 26, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 50;
  color: var(--danger);
  text-align: center;
  padding: 40px;
}

.devtools-warning h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.devtools-warning p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Player controls bar */
.player-controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  display: flex;
  align-items: center;
  gap: 12px;
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 20;
}

.player-container:hover .player-controls {
  opacity: 1;
}

.player-controls button {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px 8px;
  transition: var(--transition);
}

.player-controls button:hover {
  color: var(--gold);
}

.progress-track {
  flex: 1;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
}

.progress-played {
  height: 100%;
  background: var(--gold);
  border-radius: 2px;
  position: absolute;
  top: 0;
  left: 0;
  transition: width 0.2s;
}

.player-time {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  min-width: 80px;
  text-align: right;
}

/* Lesson view layout */
.lesson-view {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  margin-top: 20px;
}

.lesson-sidebar {
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  position: sticky;
  top: 80px;
}

@media (max-width: 1024px) {
  .lesson-view {
    grid-template-columns: 1fr;
  }
  .lesson-sidebar {
    position: static;
    max-height: none;
  }
}

@media (max-width: 768px) {
  .player-controls { opacity: 1; }
  .watermark-text { font-size: 0.9rem; }
}