/* ============================================
   Player V2 — Modern Audio Player UI
   Prefix: kpv2-
   ============================================ */

:root {
  --kpv2-bg: linear-gradient(135deg, #3b2f2f 0%, #2a1f1f 50%, #1e1616 100%);
  --kpv2-bg-solid: #2a1f1f;
  --kpv2-accent: #f5c518;
  --kpv2-accent-hover: #ffd84d;
  --kpv2-text: #f0ece6;
  --kpv2-text-muted: #9a918a;
  --kpv2-icon: #d4cdc6;
  --kpv2-icon-hover: #ffffff;
  --kpv2-progress-bg: rgba(255,255,255,0.15);
  --kpv2-progress-fill: #f0ece6;
  --kpv2-radius: 20px;
  --kpv2-radius-sm: 12px;
  --kpv2-transition: 0.2s ease;
  --kpv2-safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* Hide old player when v2 is active */
body.kpv2-active #music-player {
  display: none !important;
}

/* ============================================
   DESKTOP PLAYER
   ============================================ */

.kpv2-player {
  position: fixed;
  bottom: 14px;
  left: 16px;
  right: 16px;
  z-index: 9990;
  background: var(--kpv2-bg);
  border-radius: var(--kpv2-radius);
  box-shadow: 0 8px 32px rgba(0,0,0,0.45), 0 2px 8px rgba(0,0,0,0.25);
  transform: translateY(calc(100% + 30px));
  opacity: 0;
  transition: transform 0.35s cubic-bezier(.4,0,.2,1), opacity 0.3s ease;
  will-change: transform, opacity;
  pointer-events: none;
}

.kpv2-player.kpv2-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.kpv2-player__inner {
  display: grid;
  grid-template-columns: minmax(180px, 280px) 1fr minmax(140px, 220px);
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  max-width: 1400px;
  margin: 0 auto;
}

/* --- Left: Track Info --- */

.kpv2-player__left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.kpv2-player__cover {
  width: 64px;
  height: 64px;
  border-radius: var(--kpv2-radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: rgba(255,255,255,0.05);
}

.kpv2-player__meta {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.kpv2-player__title {
  color: var(--kpv2-text);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.kpv2-player__artist {
  color: var(--kpv2-text-muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

/* --- Center: Controls + Progress --- */

.kpv2-player__center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.kpv2-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.kpv2-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  color: var(--kpv2-icon);
  transition: color var(--kpv2-transition), transform var(--kpv2-transition);
  -webkit-tap-highlight-color: transparent;
  min-width: 36px;
  min-height: 36px;
}

.kpv2-btn:hover {
  color: var(--kpv2-icon-hover);
}

.kpv2-btn:active {
  transform: scale(0.92);
}

.kpv2-btn svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
  pointer-events: none;
}

.kpv2-btn--play {
  width: 56px;
  height: 56px;
  min-width: 56px;
  min-height: 56px;
  border-radius: 50%;
  background: var(--kpv2-accent);
  color: #1a1a1a;
  box-shadow: 0 2px 12px rgba(245,197,24,0.3);
  transition: background var(--kpv2-transition), transform var(--kpv2-transition), box-shadow var(--kpv2-transition);
}

.kpv2-btn--play:hover {
  background: var(--kpv2-accent-hover);
  color: #1a1a1a;
  box-shadow: 0 4px 20px rgba(245,197,24,0.45);
  transform: scale(1.05);
}

.kpv2-btn--play:active {
  transform: scale(0.95);
}

.kpv2-btn--play svg {
  width: 26px;
  height: 26px;
}

.kpv2-btn.kpv2-active {
  color: var(--kpv2-accent);
}

.kpv2-btn[disabled] {
  opacity: 0.3;
  cursor: default;
  pointer-events: none;
}

.kpv2-btn.kpv2-liked {
  color: #e74c5e;
}

.kpv2-btn.kpv2-liked:hover {
  color: #ff5f73;
}

/* --- Progress Bar --- */

.kpv2-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  max-width: 580px;
}

.kpv2-progress__time {
  font-size: 11px;
  color: var(--kpv2-text-muted);
  font-variant-numeric: tabular-nums;
  min-width: 36px;
  text-align: center;
  user-select: none;
}

.kpv2-progress__bar {
  flex: 1;
  height: 4px;
  background: var(--kpv2-progress-bg);
  border-radius: 2px;
  position: relative;
  cursor: pointer;
  transition: height var(--kpv2-transition);
}

.kpv2-progress__bar:hover {
  height: 6px;
}

.kpv2-progress__fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--kpv2-progress-fill);
  border-radius: 2px;
  pointer-events: none;
}

.kpv2-progress__thumb {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 12px;
  height: 12px;
  background: var(--kpv2-text);
  border-radius: 50%;
  pointer-events: none;
  transition: transform 0.15s ease;
}

.kpv2-progress__bar:hover .kpv2-progress__thumb {
  transform: translate(-50%, -50%) scale(1);
}

/* --- Right: Volume + Actions --- */

.kpv2-player__right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.kpv2-volume {
  display: flex;
  align-items: center;
  gap: 4px;
}

.kpv2-volume__slider {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 4px;
  background: var(--kpv2-progress-bg);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.kpv2-volume__slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--kpv2-text);
  cursor: pointer;
  border: none;
}

.kpv2-volume__slider::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--kpv2-text);
  cursor: pointer;
  border: none;
}

/* ============================================
   MOBILE COMPACT PLAYER
   ============================================ */

.kpv2-mobile {
  display: none;
}

@media (max-width: 768px) {
  .kpv2-player {
    display: none !important;
  }

  .kpv2-mobile {
    display: block;
    position: fixed;
    bottom: 12px;
    left: 10px;
    right: 10px;
    z-index: 9990;
    background: var(--kpv2-bg);
    border-radius: 18px;
    box-shadow: 0 6px 24px rgba(0,0,0,0.5);
    padding-bottom: var(--kpv2-safe-bottom);
    overflow: hidden;
    transform: translateY(calc(100% + 30px));
    opacity: 0;
    transition: transform 0.3s cubic-bezier(.4,0,.2,1), opacity 0.25s ease;
    will-change: transform, opacity;
    pointer-events: none;
  }

  .kpv2-mobile.kpv2-visible {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .kpv2-mobile__handle {
    width: 36px;
    height: 4px;
    background: rgba(255,255,255,0.2);
    border-radius: 2px;
    margin: 8px auto 0;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .kpv2-mobile__progress-bar {
    position: absolute;
    top: 0;
    left: 14px;
    right: 14px;
    height: 2px;
    background: rgba(255,255,255,0.08);
    border-radius: 1px;
    overflow: hidden;
  }

  .kpv2-mobile__progress-fill {
    height: 100%;
    width: 0%;
    background: rgba(240,236,230,0.35);
    border-radius: 1px;
    will-change: width;
  }

  .kpv2-mobile__inner {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
  }

  .kpv2-mobile__cover {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    object-fit: cover;
    flex-shrink: 0;
    background: rgba(255,255,255,0.05);
  }

  .kpv2-mobile__meta {
    flex: 1;
    min-width: 0;
    cursor: pointer;
  }

  .kpv2-mobile__title {
    color: var(--kpv2-text);
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
  }

  .kpv2-mobile__artist {
    color: var(--kpv2-text-muted);
    font-size: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
  }

  .kpv2-mobile__actions {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
  }

  .kpv2-mobile .kpv2-btn--play {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
  }

  .kpv2-mobile .kpv2-btn--play svg {
    width: 22px;
    height: 22px;
  }
}

/* ============================================
   MOBILE EXPANDED PLAYER
   ============================================ */

.kpv2-expanded {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--kpv2-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 24px;
  padding-bottom: calc(24px + var(--kpv2-safe-bottom));
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(.4,0,.2,1);
  will-change: transform;
  visibility: hidden;
}

.kpv2-expanded.kpv2-open {
  transform: translateY(0);
  visibility: visible;
}

.kpv2-expanded__header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0 8px;
  flex-shrink: 0;
}

.kpv2-expanded__header-center {
  text-align: center;
  flex: 1;
}

.kpv2-expanded__subtitle {
  font-size: 11px;
  color: var(--kpv2-text-muted);
  letter-spacing: 0.02em;
}

.kpv2-expanded__playlist-name {
  font-size: 13px;
  color: var(--kpv2-text);
  font-weight: 600;
  margin-top: 2px;
}

.kpv2-expanded__cover-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-height: 45vh;
  padding: 16px 0;
}

.kpv2-expanded__cover {
  width: 72vw;
  max-width: 306px;
  aspect-ratio: 1;
  border-radius: 18px;
  object-fit: cover;
  background: rgba(255,255,255,0.05);
}

.kpv2-expanded__meta {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
}

.kpv2-expanded__meta-text {
  min-width: 0;
  flex: 1;
}

.kpv2-expanded__title {
  color: var(--kpv2-text);
  font-size: 20px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.kpv2-expanded__artist {
  color: var(--kpv2-text-muted);
  font-size: 14px;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.kpv2-expanded__progress {
  width: 100%;
  padding: 12px 0 4px;
}

.kpv2-expanded__bar {
  width: 100%;
  height: 4px;
  background: var(--kpv2-progress-bg);
  border-radius: 2px;
  position: relative;
  cursor: pointer;
}

.kpv2-expanded__bar:active {
  height: 6px;
}

.kpv2-expanded__bar-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--kpv2-progress-fill);
  border-radius: 2px;
  pointer-events: none;
}

.kpv2-expanded__bar-thumb {
  position: absolute;
  top: 50%;
  width: 14px;
  height: 14px;
  background: var(--kpv2-text);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.kpv2-expanded__times {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--kpv2-text-muted);
  margin-top: 6px;
  font-variant-numeric: tabular-nums;
}

.kpv2-expanded__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 16px 0 8px;
  width: 100%;
}

.kpv2-expanded__controls .kpv2-btn svg {
  width: 26px;
  height: 26px;
}

.kpv2-expanded__controls .kpv2-btn--play {
  width: 68px;
  height: 68px;
  min-width: 68px;
  min-height: 68px;
}

.kpv2-expanded__controls .kpv2-btn--play svg {
  width: 32px;
  height: 32px;
}

.kpv2-expanded__secondary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 8px 0 0;
  width: 100%;
}

.kpv2-expanded__secondary .kpv2-btn svg {
  width: 22px;
  height: 22px;
}

/* Body scroll lock when expanded is open */
body.kpv2-expanded-open {
  overflow: hidden;
}

/* Adjust body padding when player is visible */
body.kpv2-active {
  padding-bottom: 100px;
}

@media (max-width: 768px) {
  body.kpv2-active {
    padding-bottom: 84px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .kpv2-player,
  .kpv2-mobile,
  .kpv2-expanded {
    transition-duration: 0.01ms !important;
  }
}