:root {
  --bg: #0a0a0f;
  --bg2: #12121a;
  --bg3: #1a1a2e;
  --text: #e0e0e8;
  --text2: #8888a0;
  --accent: #6c5ce7;
  --accent2: #fd79a8;
  --accent-glow: rgba(108, 92, 231, 0.3);
  --radius: 12px;
  --transition: 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  text-align: center;
  padding: 2rem 1rem 1rem;
}

header h1 {
  font-size: 2.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
  letter-spacing: -1px;
}

.subtitle {
  color: var(--text2);
  margin-top: 0.3rem;
  font-size: 0.95rem;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
}

.section {
  margin-bottom: 2rem;
}

.hidden {
  display: none !important;
}

/* Input Section */
.video-inputs {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.input-group {
  flex: 1;
  min-width: 280px;
  background: var(--bg2);
  padding: 1.2rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.05);
}

.input-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--accent);
}

.input-group input {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 2px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition);
}

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

.input-group button {
  margin-top: 0.7rem;
  width: 100%;
  padding: 0.6rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none;
  border-radius: 8px;
  color: white;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.9rem;
  transition: opacity var(--transition), transform var(--transition);
}

.input-group button:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* Config Section */
.previews {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.preview-card {
  flex: 1;
  min-width: 300px;
  background: var(--bg2);
  border-radius: var(--radius);
  padding: 1rem;
  border: 1px solid rgba(255,255,255,0.05);
}

.preview-card h3 {
  margin-bottom: 0.7rem;
  color: var(--accent);
}

.preview-player {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 0.7rem;
}

.preview-player iframe {
  width: 100%;
  height: 100%;
}

.video-info {
  font-size: 0.8rem;
  color: var(--text2);
  margin-bottom: 0.5rem;
  min-height: 1.2rem;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.range-control {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.range-control label {
  font-size: 0.8rem;
  color: var(--text2);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 8px var(--accent-glow);
}

.time-inputs {
  display: flex;
  gap: 0.5rem;
}

.btn-small {
  flex: 1;
  padding: 0.4rem 0.6rem;
  background: var(--bg3);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.75rem;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-small:hover {
  background: var(--accent);
}

.crossfade-config {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  gap: 0.5rem;
  min-width: 140px;
}

.crossfade-config label {
  font-size: 0.85rem;
  color: var(--text2);
  text-align: center;
}

.crossfade-config input[type="range"] {
  width: 120px;
}

.crossfade-icon {
  opacity: 0.7;
}

.btn-primary {
  display: block;
  margin: 1.5rem auto 0;
  padding: 0.9rem 2.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none;
  border-radius: var(--radius);
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--accent-glow);
}

.btn-secondary {
  display: block;
  margin: 1rem auto 0;
  padding: 0.6rem 1.5rem;
  background: var(--bg3);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-secondary:hover {
  background: var(--accent);
}

/* Enganchado Player */
#enganchado-viewport {
  position: relative;
  width: 100%;
  max-width: 854px;
  margin: 0 auto;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
}

#player-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}

.enganchado-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: opacity 0.1s linear;
}

.enganchado-layer iframe {
  width: 100%;
  height: 100%;
}

#iframe-blocker {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  cursor: pointer;
}

#enganchado-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.4);
  cursor: pointer;
  z-index: 10;
}

#enganchado-overlay button {
  background: rgba(108,92,231,0.8);
  border: none;
  border-radius: 50%;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition);
}

#enganchado-overlay button:hover {
  transform: scale(1.1);
  background: var(--accent);
}

#enganchado-controls {
  max-width: 854px;
  margin: 0.8rem auto 0;
}

#timeline {
  position: relative;
  margin-bottom: 0.5rem;
  cursor: pointer;
}

#timeline-bar {
  display: flex;
  height: 24px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--bg3);
}

#timeline-v1 {
  background: var(--accent);
  height: 100%;
  opacity: 0.7;
}

#timeline-crossfade {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  height: 100%;
  opacity: 0.9;
}

#timeline-v2 {
  background: var(--accent2);
  height: 100%;
  opacity: 0.7;
}

#timeline-cursor {
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: white;
  border-radius: 2px;
  pointer-events: none;
  box-shadow: 0 0 6px rgba(255,255,255,0.5);
  transition: left 0.1s linear;
}

#time-display {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text2);
  font-variant-numeric: tabular-nums;
}

#playback-controls {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

#playback-controls button {
  padding: 0.5rem 1.2rem;
  background: var(--bg3);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.85rem;
  cursor: pointer;
  transition: background var(--transition);
}

#playback-controls button:hover {
  background: var(--accent);
}

#status-indicator {
  text-align: center;
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: var(--accent);
}

/* Loading state */
.loading {
  position: relative;
  pointer-events: none;
  opacity: 0.6;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 30px;
  height: 30px;
  margin: -15px 0 0 -15px;
  border: 3px solid var(--accent);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
  .previews {
    flex-direction: column;
  }

  .crossfade-config {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  header h1 {
    font-size: 1.8rem;
  }

  .preview-card {
    min-width: unset;
  }
}