/* ===== Design System ===== */
:root {
  /* Palette — Dark (Night) theme (default) */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: rgba(22, 27, 34, 0.75);
  --bg-glass: rgba(30, 37, 48, 0.55);
  --border-glass: rgba(100, 120, 160, 0.22);
  --accent: #58a6ff;
  --accent-hover: #79bbff;
  --accent-glow: rgba(88, 166, 255, 0.25);
  --danger: #f85149;
  --danger-hover: #ff7b73;
  --success: #3fb950;
  --warning: #d29922;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  /* Theme-specific composites (allows light overrides) */
  --header-bg: rgba(13, 17, 23, 0.85);
  --row-even-bg: rgba(22, 27, 34, 0.4);
  --row-hover-bg: rgba(88, 166, 255, 0.04);
  --row-even-hover-bg: rgba(88, 166, 255, 0.06);
  --cell-border: rgba(100, 120, 160, 0.1);
  --card-hover-shadow: rgba(0, 0, 0, 0.25);
  --danger-bg: rgba(248, 81, 73, 0.12);
  --danger-border-subtle: rgba(248, 81, 73, 0.3);
  --upload-hover-bg: rgba(88, 166, 255, 0.06);
  --toast-success-bg: rgba(63, 185, 80, 0.15);
  --toast-success-border: rgba(63, 185, 80, 0.3);
  --toast-error-bg: rgba(248, 81, 73, 0.15);
  --toast-error-border: rgba(248, 81, 73, 0.3);
  --toast-info-bg: rgba(88, 166, 255, 0.15);
  --toast-info-border: rgba(88, 166, 255, 0.3);
  --card-hover-accent: rgba(88, 166, 255, 0.35);
  --card-hover-ring: rgba(88, 166, 255, 0.1);
  --modal-overlay-bg: rgba(0, 0, 0, 0.6);
  --modal-shadow: rgba(0, 0, 0, 0.5);
  --gradient-accent: rgba(88, 166, 255, 0.08);
  --gradient-success: rgba(63, 185, 80, 0.06);
  /* Spacing */
  --sp-xs: 4px;
  --sp-sm: 8px;
  --sp-md: 16px;
  --sp-lg: 24px;
  --sp-xl: 32px;
  --sp-2xl: 48px;
  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
  /* Font */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ===== Light Theme ===== */
[data-theme="light"] {
  --bg-primary: #f5f7fa;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-glass: rgba(240, 243, 248, 0.7);
  --border-glass: rgba(0, 0, 0, 0.08);
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-glow: rgba(37, 99, 235, 0.2);
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --success: #16a34a;
  --warning: #ca8a04;
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #94a3b8;
  --header-bg: rgba(255, 255, 255, 0.88);
  --row-even-bg: rgba(0, 0, 0, 0.02);
  --row-hover-bg: rgba(37, 99, 235, 0.04);
  --row-even-hover-bg: rgba(37, 99, 235, 0.06);
  --cell-border: rgba(0, 0, 0, 0.06);
  --card-hover-shadow: rgba(0, 0, 0, 0.08);
  --danger-bg: rgba(220, 38, 38, 0.08);
  --danger-border-subtle: rgba(220, 38, 38, 0.25);
  --upload-hover-bg: rgba(37, 99, 235, 0.04);
  --toast-success-bg: rgba(22, 163, 74, 0.1);
  --toast-success-border: rgba(22, 163, 74, 0.25);
  --toast-error-bg: rgba(220, 38, 38, 0.1);
  --toast-error-border: rgba(220, 38, 38, 0.25);
  --toast-info-bg: rgba(37, 99, 235, 0.1);
  --toast-info-border: rgba(37, 99, 235, 0.25);
  --card-hover-accent: rgba(37, 99, 235, 0.2);
  --card-hover-ring: rgba(37, 99, 235, 0.08);
  --modal-overlay-bg: rgba(0, 0, 0, 0.35);
  --modal-shadow: rgba(0, 0, 0, 0.15);
  --gradient-accent: rgba(37, 99, 235, 0.06);
  --gradient-success: rgba(22, 163, 74, 0.04);
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* Subtle noise background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 0%, var(--gradient-accent) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, var(--gradient-success) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

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

/* ===== Header ===== */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-md) var(--sp-xl);
  background: var(--header-bg);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--border-glass);
}

.app-header .logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.app-header .logo svg {
  width: 28px;
  height: 28px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

/* ===== Theme Toggle ===== */
.theme-toggle {
  position: relative;
  overflow: hidden;
}

.theme-toggle svg {
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Dark mode (default): show sun, hide moon */
.theme-toggle .icon-sun {
  display: block;
}

.theme-toggle .icon-moon {
  display: none;
}

/* Light mode: show moon, hide sun */
[data-theme="light"] .theme-toggle .icon-sun {
  display: none;
}

[data-theme="light"] .theme-toggle .icon-moon {
  display: block;
}

.theme-toggle:hover svg {
  transform: rotate(25deg);
  color: var(--accent);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-xs);
  padding: var(--sp-sm) var(--sp-md);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-1px);
}

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

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

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger-border-subtle);
}

.btn-danger:hover {
  background: var(--danger-bg);
  border-color: var(--danger);
  transform: translateY(-1px);
}

.btn-sm {
  padding: var(--sp-xs) var(--sp-sm);
  font-size: 0.8125rem;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
}

/* ===== Container ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--sp-xl);
}

/* Viewer gets wider on large screens for table readability */
#view-viewer.container {
  max-width: 1600px;
}

/* ===== Dashboard View ===== */
.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-xl);
  flex-wrap: wrap;
  gap: var(--sp-md);
}

.dashboard-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.dashboard-header .file-count {
  color: var(--text-secondary);
  font-weight: 400;
  font-size: 1rem;
  margin-left: var(--sp-sm);
}

/* Upload area */
.upload-area {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-md);
  padding: var(--sp-2xl) var(--sp-xl);
  border: 2px dashed var(--border-glass);
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  cursor: pointer;
  transition: all var(--transition-normal);
  margin-bottom: var(--sp-xl);
}

.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--accent);
  background: var(--upload-hover-bg);
  box-shadow: 0 0 32px var(--accent-glow);
}

.upload-area.drag-over {
  transform: scale(1.01);
}

.upload-area svg {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  transition: color var(--transition-normal);
}

.upload-area:hover svg {
  color: var(--accent);
}

.upload-area p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.upload-area p span {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* File cards grid */
.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--sp-md);
}

.file-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
  backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
  animation: cardIn 0.35s ease backwards;
}

.file-card:hover {
  border-color: var(--card-hover-accent);
  box-shadow: 0 8px 32px var(--card-hover-shadow), 0 0 0 1px var(--card-hover-ring);
  transform: translateY(-2px);
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Recently viewed cards */
.file-card.has-session {
  border-left: 3px solid var(--accent);
}

.recent-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--toast-info-bg);
  border: 1px solid var(--toast-info-border);
  border-radius: 3px;
  padding: 2px 6px;
  white-space: nowrap;
  flex-shrink: 0;
}

.file-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--sp-md);
}

.file-card-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-all;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.file-card-name:hover {
  color: var(--accent);
}

.file-card-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-sm);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.meta-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-weight: 500;
}

.meta-value {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.meta-value.expiring-soon {
  color: var(--warning);
}

.meta-value.expired {
  color: var(--danger);
}

.file-card-actions {
  display: flex;
  gap: var(--sp-sm);
  margin-top: var(--sp-md);
  padding-top: var(--sp-md);
  border-top: 1px solid var(--border-glass);
}

/* ===== Viewer View ===== */
.viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-lg);
  flex-wrap: wrap;
  gap: var(--sp-md);
}

.viewer-title {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.viewer-title h2 {
  font-size: 1.25rem;
  font-weight: 700;
}

/* Settings bar */
.settings-bar {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
  padding: var(--sp-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  margin-bottom: var(--sp-md);
  flex-wrap: wrap;
}

.setting-group {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

/* Column visibility dropdown */
.col-visibility-group {
  position: relative;
}

.col-dropdown {
  position: absolute;
  top: calc(100% + var(--sp-sm));
  left: 0;
  z-index: 150;
  min-width: 240px;
  max-height: 320px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 40px var(--modal-shadow);
  overflow: hidden;
  animation: modalIn 0.2s ease;
}

.col-dropdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-sm) var(--sp-md);
  border-bottom: 1px solid var(--border-glass);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.col-dropdown-list {
  overflow-y: auto;
  max-height: 260px;
  padding: var(--sp-xs) 0;
}

.col-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-xs) var(--sp-md);
  cursor: pointer;
  transition: background var(--transition-fast);
  font-size: 0.8125rem;
  color: var(--text-primary);
}

.col-dropdown-item:hover {
  background: var(--bg-glass);
}

.col-dropdown-item input[type="checkbox"] {
  accent-color: var(--accent);
  width: 15px;
  height: 15px;
  cursor: pointer;
  flex-shrink: 0;
}

.col-dropdown-item .col-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.col-dropdown-item .col-empty-tag {
  font-size: 0.6875rem;
  color: var(--text-muted);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: 3px;
  padding: 1px 5px;
  white-space: nowrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  background: var(--danger);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  line-height: 1;
}

.setting-group label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}

.setting-group select,
.setting-group input[type="number"] {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: var(--sp-xs) var(--sp-sm);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  outline: none;
  transition: border-color var(--transition-fast);
  min-width: 70px;
}

.setting-group select:focus,
.setting-group input[type="number"]:focus {
  border-color: var(--accent);
}

/* Table */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
}

.csv-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.csv-table thead th {
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  color: var(--accent);
  font-weight: 600;
  text-align: left;
  padding: var(--sp-sm) var(--sp-md);
  border-bottom: 2px solid var(--border-glass);
  white-space: nowrap;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  user-select: none;
}

/* Sortable header */
.csv-table thead th.sortable {
  cursor: pointer;
  transition: color var(--transition-fast);
}

.csv-table thead th.sortable:hover {
  color: var(--text-primary);
}

.csv-table thead th .sort-indicator {
  display: inline-block;
  margin-left: 4px;
  font-size: 0.7rem;
  opacity: 0.4;
  transition: opacity var(--transition-fast);
}

.csv-table thead th.sort-active .sort-indicator {
  opacity: 1;
  color: var(--accent);
}

.csv-table tbody tr {
  transition: background var(--transition-fast);
}

.csv-table tbody tr:hover {
  background: var(--row-hover-bg);
}

.csv-table tbody td {
  padding: var(--sp-sm) var(--sp-md);
  border-bottom: 1px solid var(--cell-border);
  color: var(--text-secondary);
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.csv-table tbody tr:nth-child(even) {
  background: var(--row-even-bg);
}

.csv-table tbody tr:nth-child(even):hover {
  background: var(--row-even-hover-bg);
}

/* Row number column */
.csv-table .row-num {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  min-width: 50px;
  text-align: right;
  padding-right: var(--sp-md);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-md) 0;
  gap: var(--sp-md);
  flex-wrap: wrap;
}

.pagination-info {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--sp-sm);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.page-btn:hover:not(:disabled) {
  color: var(--text-primary);
  background: var(--bg-glass);
  border-color: var(--text-muted);
}

.page-btn.active {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
  font-weight: 700;
}

.page-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--modal-overlay-bg);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  min-width: 340px;
  max-width: 90vw;
  box-shadow: 0 24px 64px var(--modal-shadow);
  animation: modalIn 0.25s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(8px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal h3 {
  font-size: 1.125rem;
  margin-bottom: var(--sp-lg);
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.modal-body label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.modal-body input,
.modal-body select {
  width: 100%;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: var(--sp-sm) var(--sp-md);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  outline: none;
}

.modal-body input:focus,
.modal-body select:focus {
  border-color: var(--accent);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--sp-sm);
  margin-top: var(--sp-lg);
}

/* ===== Empty State ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-md);
  padding: var(--sp-2xl);
  color: var(--text-muted);
  text-align: center;
}

.empty-state svg {
  width: 64px;
  height: 64px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 1rem;
}

/* ===== Toast ===== */
.toast-container {
  position: fixed;
  bottom: var(--sp-xl);
  right: var(--sp-xl);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.toast {
  padding: var(--sp-sm) var(--sp-md);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  backdrop-filter: blur(12px);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
  border: 1px solid;
}

.toast.success {
  background: var(--toast-success-bg);
  color: var(--success);
  border-color: var(--toast-success-border);
}

.toast.error {
  background: var(--toast-error-bg);
  color: var(--danger);
  border-color: var(--toast-error-border);
}

.toast.info {
  background: var(--toast-info-bg);
  color: var(--accent);
  border-color: var(--toast-info-border);
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(24px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
    transform: translateX(24px);
  }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .container {
    padding: var(--sp-md);
  }

  .app-header {
    padding: var(--sp-sm) var(--sp-md);
  }

  .file-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
  }

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

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

  .csv-table {
    font-size: 0.8125rem;
  }

  .csv-table thead th,
  .csv-table tbody td {
    padding: var(--sp-xs) var(--sp-sm);
  }

  .viewer-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .file-card-meta {
    grid-template-columns: 1fr;
  }

  .file-card-actions {
    flex-wrap: wrap;
  }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ===== Loading spinner ===== */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-glass);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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