@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

:root {
  --color-bg: #0a0a0a;
  --color-text: #e8e8e8;
  --color-text-dim: #bfbfbf;
  --color-accent: #9370db;
  --color-accent-hover: #754cc8;
  --color-overlay: rgba(25, 25, 25, 0.95);
  --card-height: 220px;
}

/* Layout */
.jukebox-wrapper {
  min-height: 100vh;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 70px 16px 40px;
  font-family: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;
}

.main-container {
  width: 100%;
  max-width: 720px;
}

/* Header Banner */
.page-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 48px;
  background: var(--color-bg);
  border-bottom: 1px solid rgba(147, 112, 219, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  font-family: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;
  font-size: 0.75rem;
  color: var(--color-text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.page-header a {
  color: inherit;
  text-decoration: none;
}

.page-header .header-prefix {
  color: var(--color-accent);
}

@media (max-width: 600px) {
  .page-header {
    height: 42px;
  }

  .page-header a {
    font-size: 0.8rem;
  }
}

/* Buttons */
.lpviz-btn {
  background: var(--color-bg);
  border: 1.5px solid var(--color-accent);
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-text);
  transition: all 0.1s ease;
  height: 52px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 0 var(--color-accent);
  transform: translateY(0);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.lpviz-btn:hover {
  background: var(--color-overlay);
}

.lpviz-btn:active,
.lpviz-btn.active {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 0 0 var(--color-accent-hover);
  transform: translateY(4px);
}

/* Mobile Carousel */
.mobile-carousel {
  display: block;
  margin-bottom: 16px;
}

.carousel-outer {
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
  overflow: hidden;
  padding-bottom: 8px;
}

.carousel-track {
  display: flex;
  transition: transform 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
  width: 300%;
}

.carousel-slide {
  width: 33.333%;
  flex-shrink: 0;
}

/* Panels */
.panel {
  background: var(--color-bg);
  border: 1.5px solid var(--color-accent);
  border-radius: 8px;
  box-shadow: 0 4px 0 var(--color-accent);
  height: var(--card-height);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.panel.selected {
  border-color: #b8a2e0;
  box-shadow: 0 4px 0 #b8a2e0;
}

.panel-content {
  width: 100%;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* View Tab Button */
.view-tab-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  max-width: 140px;
  margin-top: 16px;
  background: var(--color-bg);
  border: 1.5px solid var(--color-accent);
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-dim);
  padding: 10px 16px;
  transition: all 0.1s ease;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  box-shadow: 0 3px 0 var(--color-accent);
  transform: translateY(0);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.view-tab-btn:hover:not(:disabled) {
  background: var(--color-overlay);
  color: var(--color-text);
}

.view-tab-btn:active:not(:disabled) {
  box-shadow: 0 0 0 var(--color-accent-hover);
  transform: translateY(3px);
}

.view-tab-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.tab-icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  flex-shrink: 0;
}

/* Social Links */
.social-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 12px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  color: var(--color-text-dim);
  transition: all 0.15s ease;
  text-decoration: none;
}

.social-link svg {
  width: 18px;
  height: 18px;
}

.social-link.youtube:not(.disabled):hover {
  color: #ff0000;
  background: rgba(255, 0, 0, 0.1);
}

.social-link.spotify:not(.disabled):hover {
  color: #1db954;
  background: rgba(29, 185, 84, 0.1);
}

.social-link.disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

/* Dot Indicators */
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(147, 112, 219, 0.3);
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
  padding: 0;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.carousel-dot:hover {
  background: rgba(147, 112, 219, 0.5);
}

.carousel-dot.active {
  background: var(--color-accent);
  width: 24px;
  border-radius: 4px;
}

/* Desktop Layout */
.desktop-container {
  display: none;
  gap: 12px;
  margin-bottom: 20px;
  justify-content: center;
  align-items: stretch;
}

@media (min-width: 700px) {
  .mobile-carousel,
  .carousel-dots {
    display: none;
  }

  .desktop-container {
    display: flex;
  }

  .desktop-container .panel {
    width: 200px;
    flex-shrink: 0;
    height: var(--card-height);
    cursor: pointer;
  }

  .desktop-container .song-title { font-size: 1.1rem; }
  .desktop-container .song-artist { font-size: 0.85rem; }
  .desktop-container .song-code { font-size: 0.9rem; }
  .desktop-container .key-display { font-size: 2.8rem; }
  .desktop-container .bpm-input { font-size: 2rem; }
}

@media (min-width: 800px) {
  .desktop-container .panel {
    width: 220px;
  }
}

/* Song Panel */
.song-content {
  text-align: center;
}

.song-code {
  font-size: 0.85rem;
  color: var(--color-accent);
  letter-spacing: 0.3rem;
  margin-bottom: 8px;
}

.song-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.song-artist {
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

.code-input {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.4rem;
  margin-bottom: 8px;
}

.code-placeholder {
  color: rgba(147, 112, 219, 0.25);
}

.code-filled {
  color: var(--color-accent);
}

.placeholder-text {
  color: rgba(147, 112, 219, 0.4);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.error-text {
  color: #ef4444;
  font-size: 0.8rem;
}

/* Metronome Panel */
.metronome-content {
  width: 100%;
}

.bpm-input {
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: center;
  letter-spacing: 0;
  margin-bottom: 2px;
}

.bpm-placeholder {
  color: rgba(147, 112, 219, 0.25);
}

.bpm-filled {
  color: var(--color-accent);
}

.bpm-label {
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  text-align: center;
}

.metronome-track {
  position: relative;
  width: 100%;
  height: 2px;
  background: rgba(147, 112, 219, 0.3);
  border-radius: 1px;
  margin: 0 0 14px;
}

.metronome-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 14px;
  background: var(--color-accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 12px var(--color-accent);
}

.metronome-endpoint {
  position: absolute;
  top: 50%;
  width: 6px;
  height: 6px;
  background: rgba(147, 112, 219, 0.4);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.metronome-endpoint.left { left: 0; }
.metronome-endpoint.right { left: 100%; }

.play-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 0 auto;
  width: 90px;
  background: var(--color-bg);
  border: 1.5px solid var(--color-accent);
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-dim);
  padding: 8px 0;
  transition: all 0.1s ease;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  box-shadow: 0 3px 0 var(--color-accent);
  transform: translateY(0);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.play-btn:hover:not(:disabled) {
  background: var(--color-overlay);
  color: var(--color-text);
}

.play-btn:active:not(:disabled) {
  box-shadow: 0 0 0 var(--color-accent-hover);
  transform: translateY(3px);
}

.play-btn.playing {
  background: var(--color-accent);
  color: #fff;
}

.play-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.play-icon {
  font-size: 0.6rem;
}

/* Key Panel */
.key-content {
  text-align: center;
}

.key-display {
  font-size: 3rem;
  font-weight: 600;
  color: var(--color-text);
}

.key-label {
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Catalog */
.catalog-toggle {
  color: var(--color-text-dim);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: color 0.2s ease;
  user-select: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.catalog-toggle:hover {
  color: var(--color-accent);
}

.catalog-toggle .arrow {
  transition: transform 0.3s ease;
  font-size: 0.6rem;
}

.catalog-toggle.expanded .arrow {
  transform: rotate(180deg);
}

.catalog-container {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
}

.catalog-container.expanded {
  grid-template-rows: 1fr;
}

.catalog-inner {
  overflow: hidden;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 8px;
  overflow: hidden;
}

/* Responsive Catalog */
@media (max-width: 640px) {
  .catalog-grid {
    grid-template-columns: 1fr;
  }
  
  .song-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto auto;
    gap: 4px 12px;
    align-items: center;
  }
  
  .song-header {
    grid-column: 1 / 3;
    grid-row: 1;
  }
  
  .song-item-artist {
    grid-column: 1 / 3;
    grid-row: 2;
    margin-bottom: 0;
  }
  
  .song-meta {
    grid-column: 3;
    grid-row: 1 / 3;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
  }
}

@media (min-width: 641px) and (max-width: 800px) {
  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.song-item {
  background: var(--color-bg);
  padding: 12px 14px;
  cursor: pointer;
  transition: all 0.15s ease;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.song-item:hover {
  background: rgba(147, 112, 219, 0.1);
}

.song-item:active {
  background: rgba(147, 112, 219, 0.2);
}

.song-header {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
}

.song-item-code {
  color: var(--color-accent);
  font-size: 0.7rem;
  font-weight: 600;
  flex-shrink: 0;
}

.song-item-title {
  color: var(--color-text);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.song-item-artist {
  color: var(--color-text-dim);
  font-size: 0.65rem;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.song-meta {
  display: flex;
  gap: 10px;
  font-size: 0.6rem;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Keypad */
.keypad-wrapper {
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
}

.keypad-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

/* Mobile adjustments */
@media (max-width: 480px) {
  :root {
    --card-height: 210px;
  }

  .carousel-outer,
  .keypad-wrapper {
    max-width: 260px;
  }

  .lpviz-btn {
    height: 48px;
    font-size: 1rem;
  }

  .song-item {
    padding: 10px 12px;
  }

  .song-item-title { font-size: 0.7rem; }
  .song-item-artist { font-size: 0.6rem; }
  .song-meta { font-size: 0.55rem; }
  
  .view-tab-btn {
    padding: 8px 14px;
    max-width: 130px;
  }
}