:root {
  --bg-primary: #0a2a33;
  --bg-secondary: #1b4a5f;
  --text-primary: #f0f4f8;
  --accent-gold: #d4af37;
  --accent-soft: #e6c77c;
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.15);
  --card-hover-bg: rgba(212, 175, 55, 0.1);
  --navbar-bg: rgba(10, 42, 51, 0.95);
  --footer-text: rgba(255,255,255,0.5);
  transition: background-color 0.3s, color 0.3s;
}
[data-theme="light"] {
  --bg-primary: #f5f9ff;
  --bg-secondary: #d4e0f0;
  --text-primary: #0a2a33;
  --accent-gold: #b8860b;
  --accent-soft: #c99c3b;
  --glass-bg: rgba(10, 42, 51, 0.05);
  --glass-border: rgba(10, 42, 51, 0.1);
  --card-hover-bg: rgba(184, 134, 11, 0.1);
  --navbar-bg: rgba(255, 255, 255, 0.9);
  --footer-text: rgba(0,0,0,0.4);
}
body {
  font-family: 'Cairo', 'Poppins', sans-serif;
  background: linear-gradient(145deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  color: var(--text-primary);
  min-height: 100vh;
  padding-top: 120px;
  margin: 0;
  direction: rtl;
  transition: background 0.3s, color 0.3s;
}
h2 {
  text-align: center;
  margin-bottom: 30px;
  font-weight: 700;
  color: var(--accent-soft);
  animation: fadeInDown 0.8s ease;
}
/* الوضع المظلم: عنوان الصفحة أبيض */
[data-theme="dark"] h2 {
  color: #ffffff;
}
h2 i {
  margin-left: 10px;
  color: var(--accent-gold);
}
.navbar {
  background: var(--navbar-bg);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--accent-gold);
  transition: background 0.3s;
}
.navbar-brand {
  font-weight: 700;
  font-size: 1.8rem;
  color: var(--accent-gold) !important;
  text-shadow: 0 0 8px rgba(212, 175, 55, 0.4);
}
/* الوضع المظلم: عنوان الموقع أبيض */
[data-theme="dark"] .navbar-brand {
    color: #ffffff !important;
}
.control-bar {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-radius: 50px;
  padding: 8px 20px;
  margin-top: 10px;
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
  border: 1px solid var(--glass-border);
}
.control-btn {
  background: transparent;
  border: 1px solid var(--accent-gold);
  color: var(--text-primary);
  padding: 6px 16px;
  border-radius: 30px;
  font-weight: 600;
  transition: 0.3s;
  cursor: pointer;
}
.control-btn:hover {
  background: var(--accent-gold);
  color: #0a2a33;
}
.control-btn i {
  margin-left: 6px;
}

.search-box {
  margin-bottom: 20px;
}
.search-box input {
  border-radius: 30px;
  padding: 14px 20px;
  border: none;
  outline: none;
  background: var(--glass-bg);
  backdrop-filter: blur(6px);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 1.1rem;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
.search-box input:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
  transform: translateY(-2px);
}
.search-box input::placeholder {
  color: var(--text-primary);
  opacity: 0.6;
}
.section-label {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 25px 0 15px;
  color: var(--accent-soft);
  border-right: 5px solid var(--accent-gold);
  padding-right: 15px;
}
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 30px;
  animation: fadeIn 0.6s ease-in-out;
}
.card {
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 16px 8px;
  text-align: center;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  font-weight: 500;
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-gold);
  box-shadow: 0 15px 30px rgba(212, 175, 55, 0.2);
  background: var(--card-hover-bg);
}
.card.selected {
  background: var(--accent-gold);
  color: #0a2a33;
  font-weight: 700;
  border-color: #fff;
  box-shadow: 0 0 25px var(--accent-gold);
}
.card .count-badge {
  position: absolute;
  top: 5px;
  left: 5px;
  background: rgba(10, 42, 51, 0.7);
  color: var(--accent-gold);
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 20px;
  border: 1px solid var(--accent-gold);
}
.audio-container {
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  border-radius: 60px;
  padding: 25px 30px;
  margin: 30px 0 20px;
  border: 1px solid var(--accent-gold);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  animation: fadeInUp 0.8s;
}
audio {
  width: 100%;
  border-radius: 40px;
  outline: none;
}
audio::-webkit-media-controls-panel {
  background: var(--bg-secondary);
}
.now-playing {
  font-size: 1.2rem;
  color: var(--accent-soft);
  margin-bottom: 15px;
  padding: 10px;
  background: rgba(0,0,0,0.2);
  border-radius: 40px;
}
.spinner-border {
  width: 2rem;
  height: 2rem;
  color: var(--accent-gold);
}
.loading-overlay {
  text-align: center;
  padding: 20px;
}
.letter-group h5 {
  color: var(--accent-gold);
  font-size: 1.5rem;
  margin: 25px 0 10px;
  border-bottom: 2px dashed rgba(212, 175, 55, 0.4);
  padding-bottom: 5px;
}
footer {
  text-align: center;
  padding: 20px;
  color: var(--footer-text);
  font-size: 0.9rem;
}
footer a {
  color: var(--accent-gold);
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 768px) {
  body { padding-top: 140px; }
  .grid-container { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .card { font-size: 0.9rem; padding: 12px 4px; }
  .navbar-brand { font-size: 1.4rem; }
  .control-bar { border-radius: 30px; }
}