/**
 * Aether Music - Styles
 * "Liquid Cosmos" Theme with Glassmorphism
 * 
 * Design System:
 * - Cosmic nebula gradients with fluid animations
 * - Glassmorphic UI elements with backdrop blur
 * - Smooth 60fps transitions
 * - Dark/Light mode support
 * - Fully responsive design
 */

/* ===========================
   GOOGLE FONTS IMPORT
   =========================== */
@import url("https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:wght@400;500;600;700&display=swap");

/* ===========================
   CSS VARIABLES & THEMING
   =========================== */
:root {
  /* Primary Color Palette */
  --color-purple: #8b5cf6;
  --color-pink: #ec4899;
  --color-cyan: #06b6d4;
  --color-blue: #3b82f6;
  --color-violet: #7c3aed;
  --color-magenta: #d946ef;

  /* Light Mode Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-glass: rgba(255, 255, 255, 0.1);
  --text-primary: #1a1a1a;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --border-color: rgba(139, 92, 246, 0.2);
  --shadow-color: rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-display: "Syne", sans-serif;
  --font-body: "DM Sans", sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index layers */
  --z-background: -1;
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-tooltip: 400;

  /* Glassmorphism */
  --glass-blur: 20px;
  --glass-opacity: 0.1;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --bg-primary: #0a0a0f;
  --bg-secondary: #13131a;
  --bg-glass: rgba(255, 255, 255, 0.05);
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --border-color: rgba(139, 92, 246, 0.3);
  --shadow-color: rgba(0, 0, 0, 0.5);
}

/* ===========================
   RESET & BASE STYLES
   =========================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
  position: relative;
  min-height: 100vh;
}

/* ===========================
   ANIMATED BACKGROUND
   =========================== */
.cosmic-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-background);
  overflow: hidden;
  background: linear-gradient(
    135deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 100%
  );
}

.cosmic-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.6;
  animation: float 20s ease-in-out infinite;
  will-change: transform;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-purple), transparent);
  top: -10%;
  left: -10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--color-pink), transparent);
  top: 50%;
  right: -10%;
  animation-delay: -7s;
}

.orb-3 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-cyan), transparent);
  bottom: -15%;
  left: 30%;
  animation-delay: -14s;
}

.stars {
  position: absolute;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(2px 2px at 20% 30%, white, transparent),
    radial-gradient(2px 2px at 60% 70%, white, transparent),
    radial-gradient(1px 1px at 50% 50%, white, transparent),
    radial-gradient(1px 1px at 80% 10%, white, transparent),
    radial-gradient(2px 2px at 90% 60%, white, transparent),
    radial-gradient(1px 1px at 33% 80%, white, transparent);
  background-size: 200% 200%;
  animation: twinkle 8s ease-in-out infinite;
  opacity: 0.3;
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -50px) scale(1.1);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.9);
  }
}

@keyframes twinkle {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 0.6;
  }
}

/* ===========================
   TYPOGRAPHY
   =========================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 3rem;
}
h2 {
  font-size: 2.5rem;
}
h3 {
  font-size: 2rem;
}
h4 {
  font-size: 1.5rem;
}
h5 {
  font-size: 1.25rem;
}
h6 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--spacing-sm);
}

/* ===========================
   LAYOUT CONTAINER
   =========================== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  position: relative;
  z-index: var(--z-base);
}

/* ===========================
   HEADER & NAVIGATION
   =========================== */
.header {
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(var(--glass-blur));
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.logo {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-purple), var(--color-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.05);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-purple), var(--color-pink));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

/* Search Bar */
.search-container {
  flex: 1;
  max-width: 500px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: var(--spacing-xs) var(--spacing-md);
  padding-left: 3rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  backdrop-filter: blur(var(--glass-blur));
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-purple);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.search-icon {
  position: absolute;
  left: var(--spacing-sm);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Theme Toggle */
.theme-toggle {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  backdrop-filter: blur(var(--glass-blur));
  color: var(--text-primary);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.theme-toggle:hover {
  border-color: var(--color-purple);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

/* ===========================
   MOOD NAVIGATION
   =========================== */
.mood-nav {
  padding: var(--spacing-lg) 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.mood-nav::-webkit-scrollbar {
  display: none;
}

.mood-buttons {
  display: flex;
  gap: var(--spacing-sm);
  min-width: min-content;
}

.mood-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(var(--glass-blur));
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.mood-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    var(--mood-primary, var(--color-purple)),
    var(--mood-secondary, var(--color-pink))
  );
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: -1;
}

.mood-btn:hover::before,
.mood-btn.active::before {
  opacity: 0.2;
}

.mood-btn:hover {
  border-color: var(--mood-primary, var(--color-purple));
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

.mood-btn.active {
  border-color: var(--mood-primary, var(--color-purple));
  color: var(--mood-primary, var(--color-purple));
  box-shadow: 0 4px 12px var(--shadow-color);
}

/* Mood-specific colors */
.mood-btn[data-mood="happy"] {
  --mood-primary: #ec4899;
  --mood-secondary: #f59e0b;
}
.mood-btn[data-mood="lofi"] {
  --mood-primary: #06b6d4;
  --mood-secondary: #8b5cf6;
}
.mood-btn[data-mood="study"] {
  --mood-primary: #3b82f6;
  --mood-secondary: #06b6d4;
}
.mood-btn[data-mood="sleep"] {
  --mood-primary: #7c3aed;
  --mood-secondary: #d946ef;
}
.mood-btn[data-mood="trending"] {
  --mood-primary: #d946ef;
  --mood-secondary: #ec4899;
}
.mood-btn[data-mood="recommended"] {
  --mood-primary: #8b5cf6;
  --mood-secondary: #3b82f6;
}

/* ===========================
   CONTROLS BAR
   =========================== */
.controls-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.sort-controls {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.sort-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
}

.sort-select {
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  cursor: pointer;
  backdrop-filter: blur(var(--glass-blur));
  transition: all var(--transition-fast);
}

.sort-select:hover {
  border-color: var(--color-purple);
}

.sort-select:focus {
  outline: none;
  border-color: var(--color-purple);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.track-count {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ===========================
   MUSIC GRID
   =========================== */
.music-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
  padding-bottom: 200px; /* Space for sticky player */
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Music Card */
.music-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  backdrop-filter: blur(var(--glass-blur));
  transition: all var(--transition-base);
  position: relative;
  animation: cardFadeIn 0.5s ease-in backwards;
}

@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Staggered animation */
.music-card:nth-child(1) {
  animation-delay: 0.05s;
}
.music-card:nth-child(2) {
  animation-delay: 0.1s;
}
.music-card:nth-child(3) {
  animation-delay: 0.15s;
}
.music-card:nth-child(4) {
  animation-delay: 0.2s;
}
.music-card:nth-child(5) {
  animation-delay: 0.25s;
}
.music-card:nth-child(n + 6) {
  animation-delay: 0.3s;
}

.music-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 12px 40px var(--shadow-color);
  border-color: var(--color-purple);
}

.card-image-container {
  position: relative;
  width: 100%;
  padding-top: 100%; /* 1:1 Aspect Ratio */
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-purple), var(--color-pink));
}

.card-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.music-card:hover .card-image {
  transform: scale(1.1);
}

.play-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.music-card:hover .play-overlay {
  opacity: 1;
}

.play-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-purple), var(--color-pink));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  transform: scale(0.8);
  transition: transform var(--transition-fast);
}

.music-card:hover .play-icon {
  transform: scale(1);
}

.card-content {
  padding: var(--spacing-md);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-artist {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.mood-tag {
  padding: 0.25rem 0.75rem;
  background: linear-gradient(
    135deg,
    var(--mood-primary, var(--color-purple)),
    var(--mood-secondary, var(--color-pink))
  );
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-duration {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===========================
   MUSIC PLAYER (STICKY)
   =========================== */
.player {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--bg-glass);
  backdrop-filter: blur(var(--glass-blur));
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-md);
  z-index: var(--z-sticky);
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.player.active {
  transform: translateY(0);
}

.player-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: var(--spacing-md);
  align-items: center;
}

/* Now Playing Info */
.now-playing {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.now-playing-image {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: linear-gradient(135deg, var(--color-purple), var(--color-pink));
}

.now-playing-info {
  flex: 1;
  min-width: 0;
}

.now-playing-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 0.25rem;
}

.now-playing-artist {
  font-size: 0.85rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Player Controls */
.player-controls {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.controls-buttons {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
}

.control-btn {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: var(--spacing-xs);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.control-btn:hover {
  color: var(--color-purple);
  transform: scale(1.1);
}

.control-btn.play-pause {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-purple), var(--color-pink));
  color: white;
  font-size: 1.5rem;
}

.control-btn.play-pause:hover {
  transform: scale(1.15);
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

/* Progress Bar */
.progress-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.time-display {
  font-size: 0.75rem;
  color: var(--text-muted);
  min-width: 40px;
  text-align: center;
}

.progress-bar {
  flex: 1;
  height: 6px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  position: relative;
  cursor: pointer;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-purple), var(--color-pink));
  border-radius: var(--radius-sm);
  transition: width 0.1s linear;
  position: relative;
}

.progress-fill::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.progress-bar:hover .progress-fill::after {
  opacity: 1;
}

/* Waveform Animation */
.waveform {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 20px;
  margin-left: var(--spacing-sm);
}

.waveform-bar {
  width: 3px;
  background: linear-gradient(180deg, var(--color-purple), var(--color-pink));
  border-radius: 2px;
  animation: wave 1s ease-in-out infinite;
}

.waveform-bar:nth-child(1) {
  animation-delay: 0s;
}
.waveform-bar:nth-child(2) {
  animation-delay: 0.1s;
}
.waveform-bar:nth-child(3) {
  animation-delay: 0.2s;
}
.waveform-bar:nth-child(4) {
  animation-delay: 0.3s;
}
.waveform-bar:nth-child(5) {
  animation-delay: 0.4s;
}

@keyframes wave {
  0%,
  100% {
    height: 4px;
  }
  50% {
    height: 20px;
  }
}

.waveform.paused .waveform-bar {
  animation-play-state: paused;
  height: 4px;
}

/* Volume Controls */
.volume-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

.volume-btn {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: var(--spacing-xs);
}

.volume-btn:hover {
  color: var(--color-purple);
}

.volume-slider {
  width: 100px;
  height: 6px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  position: relative;
  cursor: pointer;
}

.volume-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-purple), var(--color-pink));
  border-radius: var(--radius-sm);
  transition: width var(--transition-fast);
}

/* ===========================
   CUSTOM SCROLLBAR
   =========================== */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-purple), var(--color-pink));
  border-radius: var(--radius-sm);
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--color-pink), var(--color-purple));
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */

/* Tablet */
@media (max-width: 1024px) {
  .music-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }

  .player-content {
    grid-template-columns: 1fr 1.5fr 1fr;
  }
}

/* Mobile */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.75rem;
  }

  .header-content {
    flex-wrap: wrap;
  }

  .search-container {
    order: 3;
    width: 100%;
    max-width: none;
  }

  .music-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-sm);
  }

  .player-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .now-playing {
    grid-row: 1;
  }

  .player-controls {
    grid-row: 2;
  }

  .volume-controls {
    grid-row: 3;
    justify-content: center;
  }

  .volume-slider {
    width: 150px;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .music-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .mood-buttons {
    gap: var(--spacing-xs);
  }

  .mood-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
  }

  .controls-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Large Screens */
@media (min-width: 1600px) {
  .music-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

/* ===========================
   UTILITY CLASSES
   =========================== */
.hidden {
  display: none !important;
}

.fade-in {
  animation: fadeIn 0.5s ease-in;
}

.slide-up {
  animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Loading State */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-xl);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top-color: var(--color-purple);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state-text {
  font-size: 1.25rem;
  font-weight: 600;
}

/* ===========================
   ACCESSIBILITY
   =========================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus styles */
*:focus-visible {
  outline: 2px solid var(--color-purple);
  outline-offset: 2px;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-purple);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}