/* DosenRadio Studio - Modern Audio Dark Theme */
:root {
  --bg-base: #0a0f1d;
  --bg-surface: #131b2e;
  --bg-surface-elevated: #1a243d;
  --bg-hover: #222f4f;
  
  --border-color: #233152;
  --border-color-focus: #38bdf8;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --color-brand: #38bdf8;
  --color-brand-glow: rgba(56, 189, 248, 0.25);
  --color-twitch: #9146ff;
  --color-twitch-hover: #772ce8;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-purple: #a855f7;

  --font-sans: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
}

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

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  max-width: 1500px;
  width: 100%;
  margin: 0 auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* NAVBAR */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo {
  font-size: 1.8rem;
  background: var(--bg-surface-elevated);
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.brand-info h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.station-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.station-badge.offline {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-danger);
  border-color: rgba(239, 68, 68, 0.3);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
  box-shadow: 0 0 8px currentColor;
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* NAV TABS */
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-base);
  padding: 0.3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.nav-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s ease;
}

.nav-tab:hover {
  color: var(--text-primary);
  background: var(--bg-surface-elevated);
}

.nav-tab.active {
  color: #fff;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
}

.btn-primary {
  background: var(--color-brand);
  color: #031427;
}

.btn-primary:hover {
  background: #7dd3fc;
  box-shadow: 0 0 12px var(--color-brand-glow);
}

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

.btn-twitch:hover {
  background: var(--color-twitch-hover);
  box-shadow: 0 0 12px rgba(145, 70, 255, 0.35);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.3);
}

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

.btn-success {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}

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

.btn-warning {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.3);
}

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

.btn-outline {
  background: transparent;
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: var(--bg-hover);
  border-color: var(--border-color-focus);
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-base);
  border: 1px solid var(--border-color);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
}

.user-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-brand);
}

/* CARDS & PANES */
.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.content-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.card-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

/* STATION & HERO */
.station-dashboard-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 1024px) {
  .station-dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.live-hero-card {
  background: linear-gradient(135deg, var(--bg-surface) 0%, #172442 100%);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  gap: 1.5rem;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.live-cover-container {
  width: 170px;
  height: 170px;
  min-width: 170px;
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.live-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.live-indicator {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(16, 185, 129, 0.9);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.live-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.live-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.live-chip {
  background: rgba(56, 189, 248, 0.15);
  color: var(--color-brand);
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.live-time {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.live-title {
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.25rem;
}

.live-artist {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.live-progress-container {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.live-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #38bdf8 0%, #818cf8 100%);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.live-controls {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* UPCOMING QUEUE */
.upcoming-card {
  max-height: 290px;
  overflow-y: auto;
}

.upcoming-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.upcoming-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.upcoming-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-brand);
  font-weight: 700;
  width: 20px;
}

.upcoming-thumb {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

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

.upcoming-title {
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.upcoming-artist {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.upcoming-dur {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* METRICS */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}

.metric-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-value {
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0.25rem 0;
}

.metric-sub {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.color-green { color: var(--color-success); }
.color-yellow { color: var(--color-warning); }
.color-purple { color: var(--color-purple); }

/* SETTINGS GRID */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.setting-item {
  background: var(--bg-surface-elevated);
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.setting-label {
  display: block;
  font-weight: 700;
  font-size: 0.92rem;
  margin-bottom: 0.25rem;
}

.setting-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

/* SWITCH TOGGLE */
.switch-toggle {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}

.switch-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--border-color);
  transition: 0.2s;
  border-radius: 26px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.2s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--color-brand);
}

input:checked + .slider:before {
  transform: translateX(22px);
}

/* LIBRARY TOOLBAR */
.library-toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 260px;
  display: flex;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.75rem;
  gap: 0.5rem;
}

.search-box input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  width: 100%;
  outline: none;
}

.filter-group {
  display: flex;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.filter-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 4px;
}

.filter-btn.active {
  background: var(--bg-surface-elevated);
  color: #fff;
}

.form-select, .form-input {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  outline: none;
}

.form-select:focus, .form-input:focus {
  border-color: var(--border-color-focus);
}

/* FLOATING BULK TOOLBAR */
.bulk-toolbar {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--color-brand);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  border-radius: var(--radius-full);
  padding: 0.6rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  z-index: 100;
  animation: slideUp 0.25s ease-out;
}

@keyframes slideUp {
  from { transform: translate(-50%, 50px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

.bulk-info {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-brand);
}

.bulk-buttons {
  display: flex;
  gap: 0.5rem;
}

/* DATA TABLES */
.table-responsive {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.data-table th {
  padding: 0.75rem 0.85rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  font-weight: 700;
}

.data-table td {
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.table-cover-thumb {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform 0.15s;
}

.table-cover-thumb:hover {
  transform: scale(1.1);
}

.table-play-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.15s;
}

.table-play-btn:hover {
  background: var(--color-brand);
  color: #000;
  border-color: var(--color-brand);
}

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.badge-purple { background: rgba(168, 85, 247, 0.15); color: #c084fc; }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: #f87171; }

.pagination-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 0 0 0;
}

/* DROPZONE & UPLOAD */
.dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 1.5rem;
  text-align: center;
  background: rgba(255, 255, 255, 0.01);
  cursor: pointer;
  transition: all 0.2s ease;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--color-brand);
  background: rgba(56, 189, 248, 0.04);
}

.dropzone-icon {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.dropzone-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.dropzone-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.file-input-hidden {
  display: none;
}

.upload-queue {
  margin-top: 1.5rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.queue-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.queue-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  max-height: 320px;
  overflow-y: auto;
}

.queue-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

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

.queue-item-name {
  font-weight: 700;
  font-size: 0.88rem;
}

.queue-item-status {
  font-size: 0.75rem;
  font-weight: 600;
}

.progress-bar-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--color-brand);
  border-radius: var(--radius-full);
  transition: width 0.2s ease;
}

.overall-progress-box {
  flex: 1;
}

.overall-label {
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.queue-footer {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* SYSTEM STATUS */
.system-dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .system-dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.system-status-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.storage-card-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.storage-gauge-box {
  background: var(--bg-surface-elevated);
  padding: 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.storage-gauge-label {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 0.88rem;
  margin-bottom: 0.5rem;
}

.storage-breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.storage-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.storage-row.total-row {
  border-bottom: none;
  font-weight: 700;
  padding-top: 0.75rem;
}

.alert-banner {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  margin-top: 0.75rem;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* MODALS */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(5px);
  display: grid;
  place-items: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalPop 0.2s ease-out;
}

.modal-card.modal-sm { max-width: 380px; }
.modal-card.modal-lg { max-width: 720px; }

@keyframes modalPop {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover { color: var(--text-primary); }

.modal-body {
  padding: 1.25rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-surface-elevated);
}

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

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.form-group .form-input, .form-group .form-select {
  width: 100%;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.modal-cover-preview {
  width: 180px;
  height: 180px;
  border-radius: var(--radius-md);
  object-fit: cover;
  margin: 0 auto;
  display: block;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.hidden {
  display: none !important;
}

.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.p-4 { padding: 1rem; }