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

:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --surface-hover: #1e1e1e;
  --border: #2a2a2a;
  --text: #e4e4e4;
  --text-muted: #888;
  --accent: #4f9eff;
  --accent-hover: #3a8aee;
  --danger: #e54545;
  --radius: 8px;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
}

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--text);
}

/* Main content */
#main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
}

/* Buttons */
.btn {
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.2s;
}

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

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

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover {
  background: #c93a3a;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.7rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.9rem;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

/* Track list */
.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.2rem;
}

.track-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s;
}

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

.track-cover {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--border);
}

.track-info {
  padding: 0.8rem;
}

.track-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.track-plays {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* Artist profile */
.artist-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.artist-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--border);
  object-fit: cover;
}

.artist-name {
  font-size: 2rem;
  font-weight: 700;
}

.artist-bio {
  color: var(--text-muted);
  margin-top: 0.5rem;
  line-height: 1.5;
}

/* Player */
.player {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 0.8rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  z-index: 1000;
}

.player.hidden {
  display: none;
}

.player-track-info {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  min-width: 200px;
}

.player-cover {
  width: 45px;
  height: 45px;
  border-radius: 4px;
  object-fit: cover;
  background: var(--border);
}

.player-title {
  font-size: 0.85rem;
  font-weight: 600;
}

.player-artist {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.player-controls {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.player-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.3rem;
  transition: color 0.2s;
}

.player-btn:hover {
  color: var(--text);
}

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

.play-btn {
  font-size: 1.4rem;
  color: var(--text);
}

.player-progress {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.progress-bar,
.volume-bar {
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.progress-bar {
  flex: 1;
}

.volume-bar {
  width: 80px;
}

.progress-bar::-webkit-slider-thumb,
.volume-bar::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
}

.player-volume {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

/* Search */
.search-bar {
  margin-bottom: 2rem;
}

.search-bar input {
  width: 100%;
  padding: 0.8rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 30px;
  color: var(--text);
  font-size: 0.9rem;
}

.search-bar input:focus {
  outline: none;
  border-color: var(--accent);
}

/* Section headers */
.section-header {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
}

/* Table */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 0.7rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

.table th {
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.tab {
  padding: 0.8rem 1.2rem;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.tab:hover {
  color: var(--text);
}

.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Login page */
.auth-container {
  max-width: 380px;
  margin: 4rem auto;
}

.auth-container h2 {
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

/* Utility */
.hidden {
  display: none !important;
}

.text-muted {
  color: var(--text-muted);
}

.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }

.flex {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar { padding: 1rem; }
  #main-content { padding: 1rem; }
  .player { padding: 0.6rem 1rem; gap: 0.8rem; flex-wrap: wrap; }
  .player-volume { display: none; }
  .player-track-info { min-width: auto; }
  .track-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .artist-header { flex-direction: column; text-align: center; }
}

/* Share */
.share-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.share-sheet {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  width: 100%;
  max-width: 360px;
}

.share-sheet-header {
  font-weight: 600;
  margin-bottom: 1rem;
  text-align: center;
}

.share-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.share-link {
  display: block;
  width: 100%;
  text-align: center;
  padding: 0.75rem 1rem;
  background: var(--surface-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
}

.share-link:hover {
  background: var(--border);
  color: var(--text);
}

.share-close {
  width: 100%;
}