:root {
  --bg-main: #090d16;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(99, 102, 241, 0.4);
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --primary: #6366F1;
  --primary-hover: #4F46E5;
  --primary-glow: rgba(99, 102, 241, 0.25);
  --success: #10B981;
  --success-glow: rgba(16, 185, 129, 0.25);
  --warning: #F59E0B;
  --danger: #EF4444;
  --danger-hover: #DC2626;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.5), 0 0 20px var(--primary-glow);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(16, 185, 129, 0.08) 0%, transparent 45%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Container & Layout */
.container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px;
  flex: 1;
}

.container-narrow {
  max-width: 540px;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
  background: rgba(9, 13, 22, 0.8);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.15rem;
}

.brand-badge {
  background: linear-gradient(135deg, var(--primary), #8B5CF6);
  color: #FFF;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* Glass Cards */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
  line-height: 1.5;
}

/* Badges & Indicators */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-live {
  background: rgba(16, 185, 129, 0.15);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.badge-paused {
  background: rgba(245, 158, 11, 0.15);
  color: #FBBF24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-ended {
  background: rgba(100, 116, 139, 0.15);
  color: #94A3B8;
  border: 1px solid rgba(100, 116, 139, 0.3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: #FFF;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--success);
  color: #FFF;
  box-shadow: 0 4px 14px var(--success-glow);
}

.btn-success:hover {
  background: #059669;
  transform: translateY(-1px);
}

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

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-block {
  width: 100%;
}

.btn-large {
  padding: 16px 28px;
  font-size: 1.1rem;
  border-radius: var(--radius-md);
}

/* Forms */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input, .form-select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Language Selection Grid */
.lang-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 10px;
  max-height: 280px;
  overflow-y: auto;
  padding-right: 4px;
}

.lang-grid::-webkit-scrollbar {
  width: 6px;
}

.lang-grid::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
}

.lang-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 10px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.lang-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.lang-card.selected {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--primary);
  box-shadow: 0 0 12px var(--primary-glow);
}

.lang-flag {
  font-size: 1.6rem;
  margin-bottom: 4px;
}

.lang-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.lang-english {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.lang-active-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 7px;
  height: 7px;
  background: #10B981;
  border-radius: 50%;
  box-shadow: 0 0 6px #10B981;
}

/* Audio Player Section */
.audio-player-container {
  text-align: center;
  padding: 30px 20px;
}

.play-button-hero {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #8B5CF6);
  border: none;
  color: #FFF;
  font-size: 2rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 25px var(--primary-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  margin-bottom: 16px;
}

.play-button-hero:hover {
  transform: scale(1.06);
  box-shadow: 0 12px 30px rgba(99, 102, 241, 0.4);
}

.play-button-hero.playing {
  background: linear-gradient(135deg, var(--success), #059669);
  box-shadow: 0 8px 25px var(--success-glow);
}

/* Subtitle Stream Display */
.subtitles-box {
  background: rgba(10, 15, 26, 0.85);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  min-height: 200px;
  max-height: 380px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.subtitles-box::-webkit-scrollbar {
  width: 6px;
}

.subtitles-box::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
}

.sub-entry {
  animation: fadeIn 0.3s ease;
  line-height: 1.6;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.sub-entry.translated {
  font-size: 1.25rem;
  font-weight: 500;
  color: #FFFFFF;
}

.sub-entry.original {
  font-size: 0.88rem;
  color: var(--text-muted);
  border-left: 2px solid var(--border-accent);
  padding-left: 8px;
}

/* Waveform Visualizer Canvas */
.visualizer-canvas {
  width: 100%;
  height: 60px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.25);
  display: block;
  margin: 12px 0;
}

/* QR Code Display */
.qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: #FFF;
  border-radius: var(--radius-md);
  width: fit-content;
  margin: 0 auto;
}

.qr-image {
  width: 200px;
  height: 200px;
  display: block;
}

/* Utility classes */
.text-center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }

/* Responsive adjustments */
@media (max-width: 640px) {
  .navbar { padding: 12px 16px; }
  .container { padding: 16px 12px; }
  .card { padding: 16px; }
  .sub-entry.translated { font-size: 1.1rem; }
  .play-button-hero { width: 75px; height: 75px; font-size: 1.7rem; }
}