/* style.css — PODSAI × Guojia Institutional Research Monograph & Terminal */

:root,
[data-theme='light'] {
  /* Fluid Type Scale */
  --text-xs: clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);   /* 12px → 13px */
  --text-sm: clamp(0.84375rem, 0.8rem + 0.2vw, 0.9375rem);  /* 13.5px → 15px */
  --text-base: clamp(0.96875rem, 0.93rem + 0.2vw, 1.0625rem); /* 15.5px → 17px */
  --text-lg: clamp(1.125rem, 1.04rem + 0.45vw, 1.375rem);   /* 18px → 22px */
  --text-xl: clamp(1.375rem, 1.2rem + 0.85vw, 1.875rem);    /* 22px → 30px */
  --text-2xl: clamp(1.75rem, 1.35rem + 1.8vw, 2.75rem);     /* 28px → 44px */

  /* 4px Spacing System */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* PODSAI Archival Paper & Ink Surfaces */
  --color-bg: #f6f4ef;
  --color-surface: #fbfaf7;
  --color-surface-2: #ffffff;
  --color-surface-offset: #efece4;
  --color-surface-offset-2: #e5e1d7;
  --color-surface-dynamic: #dcd7cb;
  --color-divider: oklch(0.22 0.01 75 / 0.12);
  --color-border: oklch(0.22 0.01 75 / 0.16);
  --color-border-strong: oklch(0.22 0.01 75 / 0.32);

  /* Text Hierarchy */
  --color-text: #1c1a16;
  --color-text-muted: #57534a;
  --color-text-faint: #787368;
  --color-text-inverse: #fbfaf7;

  /* Semantic & Political / DataViz Accents (WCAG AA compliant) */
  --color-primary: #0d5c63;
  --color-primary-hover: #084146;
  --color-primary-soft: oklch(0.45 0.08 200 / 0.1);

  --color-dem: #1d4ed8;
  --color-dem-soft: oklch(0.5 0.18 260 / 0.1);
  --color-rep: #b91c1c;
  --color-rep-soft: oklch(0.5 0.18 25 / 0.1);
  --color-split: #6d28d9;
  --color-split-soft: oklch(0.48 0.18 295 / 0.1);

  --color-success: #1f6f43;
  --color-success-soft: oklch(0.5 0.13 150 / 0.12);
  --color-warning: #9a4a06;
  --color-warning-soft: oklch(0.6 0.15 55 / 0.14);
  --color-error: #a31d28;
  --color-error-soft: oklch(0.5 0.18 22 / 0.12);

  /* Radius & Shadows */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.05), 0 2px 6px oklch(0.2 0.01 80 / 0.03);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.07), 0 1px 3px oklch(0.2 0.01 80 / 0.05);
  --shadow-lg: 0 12px 28px oklch(0.2 0.01 80 / 0.1);

  --content-wide: 1320px;

  /* Typography */
  --font-display: 'Newsreader', 'Noto Serif SC', 'Songti SC', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
}

[data-theme='dark'] {
  --color-bg: #121210;
  --color-surface: #191916;
  --color-surface-2: #21201c;
  --color-surface-offset: #262520;
  --color-surface-offset-2: #2f2d28;
  --color-surface-dynamic: #3a3831;
  --color-divider: oklch(0.88 0.01 80 / 0.1);
  --color-border: oklch(0.88 0.01 80 / 0.15);
  --color-border-strong: oklch(0.88 0.01 80 / 0.3);

  --color-text: #ebe8e0;
  --color-text-muted: #aba69b;
  --color-text-faint: #858075;
  --color-text-inverse: #141412;

  --color-primary: #4db0b8;
  --color-primary-hover: #6ec4cb;
  --color-primary-soft: oklch(0.7 0.1 200 / 0.15);

  --color-dem: #60a5fa;
  --color-dem-soft: oklch(0.68 0.16 255 / 0.16);
  --color-rep: #f87171;
  --color-rep-soft: oklch(0.68 0.17 25 / 0.16);
  --color-split: #c084fc;
  --color-split-soft: oklch(0.7 0.16 295 / 0.16);

  --color-success: #4ade80;
  --color-success-soft: oklch(0.72 0.15 150 / 0.15);
  --color-warning: #fbbf24;
  --color-warning-soft: oklch(0.78 0.15 70 / 0.16);
  --color-error: #fb7185;
  --color-error-soft: oklch(0.7 0.17 20 / 0.16);

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.35);
  --shadow-md: 0 4px 14px oklch(0 0 0 / 0.45);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.6);
}

/* Utility & Numerics */
.mono,
.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums lining-nums;
}

.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 3vw, var(--space-8));
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 1000;
  text-decoration: none;
  font-size: var(--text-sm);
}
.skip-link:focus {
  top: var(--space-2);
}

/* Sticky Top Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: color-mix(in oklab, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2) var(--space-3);
  min-height: 60px;
  padding-block: var(--space-2);
}

.brand-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.brand-mark {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-2);
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: var(--radius-sm);
}

@media (max-width: 480px) {
  .brand-mark {
    font-size: 11px;
    letter-spacing: 0.03em;
    padding: 3px 6px;
  }
  .alert-pill {
    font-size: 11px;
    padding: 2px 8px;
  }
}

.brand-subtitle {
  display: none;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  width: 100%;
  order: 3;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-1);
}
.main-nav::-webkit-scrollbar {
  display: none;
}

@media (min-width: 960px) {
  .header-inner {
    flex-wrap: nowrap;
  }
  .main-nav {
    width: auto;
    order: 0;
    border-top: none;
    padding-top: 0;
  }
}

.nav-link {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) var(--space-2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.alert-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-warning-soft);
  color: var(--color-warning);
  border: 1px solid color-mix(in oklab, var(--color-warning) 30%, transparent);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-warning);
}

.theme-btn {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
}
.theme-btn:hover {
  background: var(--color-surface-offset);
}

/* Hero Section */
.hero-section {
  padding-block: clamp(var(--space-8), 4vw, var(--space-12));
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--color-surface) 60%, var(--color-bg)) 0%,
    var(--color-bg) 100%
  );
}

.hero-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.meta-tag {
  padding: 2px var(--space-2);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-weight: 600;
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  max-width: 28ch;
}

.hero-lead {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 82ch;
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

/* Executive Judgment Grid */
.judgment-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

@media (min-width: 1024px) {
  .judgment-grid {
    grid-template-columns: 1.55fr 1fr;
  }
}

.judgment-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-5), 2.5vw, var(--space-8));
  box-shadow: var(--shadow-sm);
}

/* Prevent CSS Grid blowout on narrow viewports */
.judgment-grid > *,
.grid-2 > *,
.grid-sidebar > *,
.calc-grid > *,
.kpi-strip > *,
.bank-grid > *,
.scenario-strip > *,
.source-list > * {
  min-width: 0;
}

.card-eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
}

.judgment-card h2 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.judgment-list {
  display: grid;
  gap: var(--space-3);
  list-style: none;
}

.judgment-list li {
  font-size: var(--text-sm);
  line-height: 1.65;
  padding-left: var(--space-4);
  position: relative;
}

.judgment-list li::before {
  content: '▪';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
}

/* KPI Strip */
.kpi-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  gap: var(--space-4);
}

.kpi-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-2);
}

.kpi-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kpi-value {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.kpi-sub {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.45;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  white-space: nowrap;
  flex-shrink: 0;
  max-width: 100%;
}

@media (max-width: 767px) {
  .badge {
    white-space: normal;
    flex-shrink: 1;
    line-height: 1.35;
  }
}

.badge-dem {
  background: var(--color-dem-soft);
  color: var(--color-dem);
}
.badge-rep {
  background: var(--color-rep-soft);
  color: var(--color-rep);
}
.badge-warn {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}
.badge-ok {
  background: var(--color-success-soft);
  color: var(--color-success);
}
.badge-err {
  background: var(--color-error-soft);
  color: var(--color-error);
}
.badge-primary {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

/* Section Layout */
.section-block {
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .section-header {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

.section-index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
}

.section-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 68ch;
  margin-top: var(--space-2);
}

/* Interactive Filter / Tab Bars */
.tab-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  background: var(--color-surface-offset);
  padding: var(--space-1);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.tab-btn {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  min-height: 44px;
  border-radius: calc(var(--radius-md) - 2px);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
}
.tab-btn:hover {
  color: var(--color-text);
}
.tab-btn.active,
.tab-btn[aria-selected='true'] {
  background: var(--color-surface-2);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

/* Two Column Panels */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 960px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.grid-sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 1024px) {
  .grid-sidebar {
    grid-template-columns: 1.35fr 1fr;
  }
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-4), 2vw, var(--space-6));
  box-shadow: var(--shadow-sm);
}

.panel-title {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.panel-sub {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.chart-wrap {
  position: relative;
  width: 100%;
  min-height: 290px;
}

/* Tables */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-xs);
}

.data-table th {
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  font-weight: 700;
  text-align: left;
  padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.data-table td {
  padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  vertical-align: top;
  line-height: 1.5;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr.clickable-row {
  cursor: pointer;
  transition: background var(--transition-interactive);
}
.data-table tbody tr.clickable-row:hover,
.data-table tbody tr.clickable-row.selected {
  background: var(--color-primary-soft);
}

/* Probability Bar inside Tables */
.prob-bar-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 130px;
}
.prob-track {
  flex: 1;
  height: 8px;
  background: var(--color-surface-offset-2);
  border-radius: var(--radius-full);
  overflow: hidden;
  display: flex;
}
.prob-fill-dem {
  background: var(--color-dem);
  height: 100%;
}
.prob-fill-rep {
  background: var(--color-rep);
  height: 100%;
}
.prob-fill-primary {
  background: var(--color-primary);
  height: 100%;
}

/* State Flashpoint Inspector Card */
.inspector-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Wall Street Bank Cards */
.bank-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(360px, 100%), 1fr));
  gap: var(--space-5);
}

.bank-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  box-shadow: var(--shadow-sm);
}

.bank-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}

.bank-name {
  font-size: var(--text-base);
  font-weight: 700;
}

.bank-analyst {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

/* Interactive Calculator Styling */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 900px) {
  .calc-grid {
    grid-template-columns: 1fr 1.15fr;
  }
}

.slider-group {
  margin-bottom: var(--space-4);
}
.slider-header {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.range-input {
  width: 100%;
  accent-color: var(--color-primary);
  min-height: 32px;
  cursor: pointer;
}

.calc-output-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: var(--space-3);
}

.calc-metric {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}

/* Guojia Wargaming Engine Specifics */
.actor-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.actor-btn {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-2) var(--space-3);
  min-height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
}
.actor-btn:hover {
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.actor-btn.active,
.actor-btn.active:hover,
.actor-btn.active:focus-visible {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.layer-box {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}
.layer-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

/* Scenario Cards */
.scenario-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(210px, 100%), 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.scenario-btn {
  text-align: left;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-height: 110px;
}
.scenario-btn:hover {
  border-color: var(--color-border-strong);
}
.scenario-btn.active {
  border: 2px solid var(--color-primary);
  background: var(--color-surface-2);
  box-shadow: var(--shadow-md);
}

/* Heatmap Cell Badges */
.heat-cell {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
  text-align: center;
  min-width: 68px;
}
.heat-pos-2 {
  background: var(--color-success-soft);
  color: var(--color-success);
  border: 1px solid color-mix(in oklab, var(--color-success) 35%, transparent);
}
.heat-pos-1 {
  background: color-mix(in oklab, var(--color-success-soft) 55%, transparent);
  color: var(--color-success);
}
.heat-neu {
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
}
.heat-neg-1 {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}
.heat-neg-2 {
  background: var(--color-error-soft);
  color: var(--color-error);
  border: 1px solid color-mix(in oklab, var(--color-error) 35%, transparent);
}

/* Code / YAML Ledger Box */
.ledger-pre {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  overflow-x: auto;
  line-height: 1.6;
  max-height: 420px;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  min-height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.action-btn:hover {
  background: var(--color-primary-hover);
}
.action-btn.secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
}
.action-btn.secondary:hover {
  background: var(--color-surface-offset);
}

/* Footer */
.site-footer {
  padding-block: var(--space-12);
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.source-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.source-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.source-item a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
}
.source-item a:hover {
  text-decoration: underline;
}
.source-url-text {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  word-break: break-all;
  user-select: all;
}