/* ==========================================================================
   K-POP Timeline - Track Card Styles
   Based on sample.png reference
   ========================================================================== */

/* ===== Track Card ===== */
.track-card {
  position: relative;
  display: grid;
  grid-template-columns: 3fr 5fr;
  gap: var(--grid-gap);
  background: transparent;
  padding: 0;
  width: 100%;
  transition: transform var(--transition-normal);
  cursor: pointer;
}

.track-card:hover {
  transform: translateY(-2px);
}

.track-card.is-playing {
  /* No special styling needed */
}

/* ===== Artwork ===== */
.track-card__artwork-container {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 0;
  overflow: visible;
  background: var(--color-bg-secondary);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.track-card__artwork-container:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.track-card__artwork {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Duotone hover effect */
.track-card__artwork-container::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-accent-primary);
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.track-card__artwork-container:hover .track-card__artwork {
  filter: grayscale(100%) contrast(1.1);
}

.track-card__artwork-container:hover::after {
  opacity: 1;
}

/* Playing state */
.track-card.is-playing .track-card__artwork-container .track-card__artwork {
  filter: grayscale(100%) contrast(1.1);
}

.track-card.is-playing .track-card__artwork-container::after {
  opacity: 1;
}

/* Play/Pause overlay */
.track-card__play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.track-card__play-icon,
.track-card__pause-icon {
  width: 64px;
  height: 64px;
  fill: white;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
  transform: scale(0.9);
  transition: transform var(--transition-fast);
  position: absolute;
}

/* Hide pause icon by default */
.track-card__pause-icon {
  opacity: 0;
}

/* Show play overlay on hover (desktop only) */
@media (hover: hover) {
  .track-card__artwork-container:hover .track-card__play-overlay {
    opacity: 1;
  }

  .track-card__artwork-container:hover .track-card__play-icon,
  .track-card__artwork-container:hover .track-card__pause-icon {
    transform: scale(1);
  }
}

/* Playing state - show pause icon */
.track-card.is-playing .track-card__play-overlay {
  opacity: 1;
}

.track-card.is-playing .track-card__play-icon {
  opacity: 0;
}

.track-card.is-playing .track-card__pause-icon {
  opacity: 1;
  transform: scale(1);
}

/* Hide overlay on touch devices (except when playing) */
@media (hover: none) {
  .track-card__play-overlay {
    display: none;
  }

  .track-card.is-playing .track-card__play-overlay {
    display: flex;
  }
}

/* ===== Track Info ===== */
.track-card__info {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Title */
.track-card__title {
  margin-bottom: var(--spacing-xs);
}

.track-card__title-ja {
  display: block;
  font-family: var(--font-family-ja);
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  font-feature-settings: 'palt' 1;
  color: var(--color-accent-primary);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-xs);

  /* Truncate long titles */
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.track-card__title-ko {
  display: block;
  font-family: var(--font-family-ko);
  font-size: 1rem;
  font-weight: var(--font-weight-regular);
  color: var(--color-text-korean);
  line-height: var(--line-height-normal);
}

/* Artist */
.track-card__artist {
  margin-bottom: var(--spacing-md);
}

.track-card__artist-ja {
  display: block;
  font-family: var(--font-family-ja);
  font-size: 1.125rem;
  font-weight: var(--font-weight-medium);
  font-feature-settings: 'palt' 1;
  color: var(--color-accent-primary);
  margin-bottom: 2px;
}

.track-card__artist-ko {
  display: block;
  font-family: var(--font-family-ko);
  font-size: 0.875rem;
  font-weight: var(--font-weight-light);
  color: var(--color-text-korean);
}

/* ===== Service Links ===== */
.track-card__links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: auto;
}

.track-card__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-accent-secondary);
  transition: transform var(--transition-fast),
              background var(--transition-fast);
}

.track-card__link:hover {
  transform: scale(1.1);
}

.track-card__link--youtube:hover {
  background: var(--color-youtube);
}

.track-card__link--spotify:hover {
  background: var(--color-spotify);
}

/* Apple Music Badge (official badge) */
.track-card__link--apple-badge {
  width: auto;
  height: 40px;
  padding: 0 12px;
  border-radius: var(--radius-md);
  background: var(--color-accent-secondary);
  margin-right: var(--spacing-xs);
}

.track-card__link--apple-badge img {
  height: 20px;
  width: auto;
}

.track-card__link--apple-badge:hover {
  background: var(--color-apple-music);
}

.track-card__link:hover svg {
  fill: white;
}

.track-card__link svg {
  width: 20px;
  height: 20px;
  fill: white;
  transition: fill var(--transition-fast);
}

/* ===== Release Date (optional display) ===== */
.track-card__release {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
}

.track-card__release-label {
  color: var(--color-accent-primary);
  margin-right: var(--spacing-xs);
}

/* ===== No Preview State ===== */
.track-card--no-preview .track-card__play-overlay {
  display: none;
}

.track-card--no-preview {
  cursor: default;
}

/* ===== Placeholder Artwork ===== */
.track-card__artwork-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg,
    var(--color-accent-light) 0%,
    var(--color-bg-secondary) 100%
  );
}

.track-card__artwork-placeholder svg {
  width: 48px;
  height: 48px;
  fill: var(--color-accent-primary);
  opacity: 0.5;
}