@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  color-scheme: light dark;

  /* Apple Light Theme Variables */
  --bg-color: #f5f5f7;
  --bg-sidebar: rgba(245, 245, 247, 0.6);
  --bg-player: rgba(255, 255, 255, 0.7);
  --bg-card: #ffffff;
  --bg-card-hover: #f0f0f2;
  --bg-input: rgba(0, 0, 0, 0.05);

  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --text-inverse: #ffffff;

  --border-color: rgba(0, 0, 0, 0.1);
  --border-card: rgba(0, 0, 0, 0.05);

  --accent-blue: #0071e3;
  --accent-red: #ff3b30;
  --accent-green: #34c759;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);

  /* Dimensions */
  --sidebar-w: 260px;
  --player-h: 80px;
}

[data-theme="dark"] {
  --bg-color: #000000;
  --bg-sidebar: rgba(28, 28, 30, 0.5);
  --bg-player: rgba(28, 28, 30, 0.65);
  --bg-card: rgba(44, 44, 46, 0.7);
  --bg-card-hover: rgba(58, 58, 60, 0.9);
  --bg-input: rgba(255, 255, 255, 0.1);

  --text-primary: #f5f5f7;
  --text-secondary: #86868b;
  --text-inverse: #ffffff;

  --border-color: rgba(255, 255, 255, 0.1);
  --border-card: rgba(255, 255, 255, 0.05);

  --accent-blue: #0a84ff;
  --accent-red: #ff453a;
  --accent-green: #32d74b;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
  /* Prevent body scroll, layout handles it */
  height: 100vh;
  width: 100vw;
}

/* ---------------- Layout & Structure ---------------- */

.app-layout {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  position: relative;
}

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  backdrop-filter: blur(25px) saturate(200%);
  -webkit-backdrop-filter: blur(25px) saturate(200%);
  display: flex;
  flex-direction: column;
  z-index: 10;
  padding: 32px 16px;
  overflow-y: auto;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding-bottom: var(--player-h);
  /* Space for bottom player */
  overflow: hidden;
  position: relative;
}

/* ---------------- Typography ---------------- */

h1,
h2,
h3,
h4 {
  font-weight: 700;
  letter-spacing: -0.5px;
}

.title-large {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.sidebar-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  color: var(--text-secondary);
  margin: 24px 0 8px 12px;
}

/* ---------------- Sidebar Items ---------------- */

.nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s ease;
  margin-bottom: 2px;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: var(--bg-card);
}

.nav-item.active {
  background: var(--bg-input);
  color: var(--accent-blue);
  font-weight: 600;
}

/* ---------------- Header Area ---------------- */

.top-bar {
  padding: 24px 40px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 5;
  transition: all 0.3s ease;
}

.top-bar.scrolled {
  background: var(--bg-player);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 40px;
}

.top-bar .title-large {
  margin: 0;
  transition: font-size 0.3s ease;
}

.top-bar.scrolled .title-large {
  font-size: 24px;
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* ---------------- Search & Inputs ---------------- */

.search-box {
  position: relative;
  width: 280px;
}

.input-modern {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 12px 16px 12px 36px;
  font-size: 14px;
  color: var(--text-primary);
  transition: all 0.2s ease;
  font-family: inherit;
}

.input-modern:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.2);
  background: var(--bg-card);
}

[data-theme="dark"] .input-modern:focus {
  box-shadow: 0 0 0 4px rgba(10, 132, 255, 0.3);
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 18px;
}

/* ---------------- Track Grid ---------------- */

.track-container {
  padding: 0 40px 40px 40px;
  overflow-y: auto;
  flex: 1;
}

.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.track-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  box-shadow: var(--shadow-sm);
  position: relative;
  aspect-ratio: 1 / 1;
}

.track-card:hover {
  transform: scale(1.03) translateY(-4px);
  box-shadow: var(--shadow-md);
  background: var(--bg-card-hover);
}

.track-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--bg-input), var(--border-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 28px;
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.track-card:hover .track-icon {
  background: var(--accent-blue);
  color: white;
  transform: scale(1.1);
  box-shadow: 0 8px 16px rgba(0, 113, 227, 0.4);
}

.track-name {
  font-weight: 600;
  font-size: 15px;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  word-break: break-word;
}

.fav-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  opacity: 0;
  transition: all 0.2s ease;
  font-size: 20px;
}

.track-card:hover .fav-btn,
.fav-btn.active {
  opacity: 1;
}

.fav-btn.active {
  color: #ff9f0a;
  /* Apple Orange */
}

/* ---------------- Bottom Control Bar ---------------- */

.bottom-player {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: var(--player-h);
  background: var(--bg-player);
  border-top: 1px solid var(--border-color);
  backdrop-filter: blur(30px) saturate(200%);
  -webkit-backdrop-filter: blur(30px) saturate(200%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: 20;
}

.player-section {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
}

.player-section.center {
  justify-content: center;
  flex: 2;
}

.player-section.right {
  justify-content: flex-end;
}

/* ---------------- Buttons & Controls ---------------- */

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-icon:hover {
  background: var(--bg-input);
}

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

.btn-primary {
  background: var(--accent-blue);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}

.btn-primary:hover {
  transform: scale(1.05);
  filter: brightness(1.1);
}

.btn-danger {
  background: rgba(255, 59, 48, 0.1);
  color: var(--accent-red);
  border: none;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-danger:hover {
  background: var(--accent-red);
  color: white;
  box-shadow: 0 4px 12px rgba(255, 59, 48, 0.3);
}

/* Partymode Chaos Animation Style */
.btn-chaos {
  background: linear-gradient(45deg, #ff2a6d, #d1f7ff, #05d9e8, #01012b);
  background-size: 300% 300%;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  animation: bgPulse 3s ease infinite;
  box-shadow: 0 4px 15px rgba(5, 217, 232, 0.5);
  transition: transform 0.2s;
}

.btn-chaos:hover {
  transform: scale(1.05);
}

@keyframes bgPulse {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

/* ---------------- Select & Volume ---------------- */

.select-modern {
  appearance: none;
  background: var(--bg-input);
  border: 1px solid transparent;
  padding: 8px 36px 8px 16px;
  border-radius: 999px;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.select-modern:hover {
  background: var(--bg-card);
  border-color: var(--border-color);
}

.select-modern:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.2);
}

.volume-container {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 140px;
}

.volume-slider {
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  outline: none;
  background-image: linear-gradient(var(--text-secondary), var(--text-secondary));
  background-size: var(--_fill, 0%) 100%;
  background-repeat: no-repeat;
}

.volume-slider::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--text-primary);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}

/* ---------------- Admin Badges & Checkboxes ---------------- */

.admin-checkbox {
  position: absolute;
  top: 12px;
  left: 12px;
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-card);
  cursor: pointer;
  transition: all 0.2s;
  z-index: 2;
}

.admin-checkbox:checked {
  background: var(--accent-blue) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E") no-repeat center center;
  background-size: 14px;
  border-color: var(--accent-blue);
}

.badge-new {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 50%);
  background: var(--accent-blue);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 113, 227, 0.4);
}

.badge-custom {
  position: absolute;
  bottom: -4px;
  right: -4px;
  font-size: 20px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* ---------------- Error & Notification ---------------- */

.notification {
  position: fixed;
  bottom: calc(var(--player-h) + 20px);
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 14px;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: slideUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes slideUp {
  from {
    transform: translate(-50%, 20px);
    opacity: 0;
  }

  to {
    transform: translate(-50%, 0);
    opacity: 1;
  }
}

.notification.error {
  background: rgba(255, 59, 48, 0.9);
  color: white;
}

.notification.info {
  background: rgba(52, 199, 89, 0.9);
  color: white;
}

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

  .sidebar {
    width: 100%;
    height: 60px;
    flex-direction: row;
    padding: 10px;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    overflow-y: hidden;
  }

  .sidebar-title {
    display: none;
  }

  .nav-item {
    white-space: nowrap;
    margin-right: 8px;
    margin-bottom: 0;
    width: auto;
  }

  .main-content {
    padding-bottom: calc(var(--player-h) + 60px);
  }

  .bottom-player {
    flex-direction: column;
    height: auto;
    padding: 16px;
    gap: 16px;
  }

  .search-box {
    width: 100%;
  }
}