/* ========================================
   LLM TIMELINE — Design Tokens & Styles
   Art Direction: Technical / Developer / Data
   Dark-first with a deep space-inspired palette
   ======================================== */

:root {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* Spacing */
  --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;
  --space-32: 8rem;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Satoshi', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

/* ========================================
   COLOR — Deep dark tech palette
   ======================================== */

:root, [data-theme="light"] {
  --color-bg: #f5f5f0;
  --color-surface: #ffffff;
  --color-surface-2: #fafaf7;
  --color-border: #d8d8d0;
  --color-divider: #e5e5de;
  --color-text: #1a1a1a;
  --color-text-muted: #6b6b65;
  --color-text-faint: #a5a59e;
  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-glow: rgba(99, 102, 241, 0.15);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --timeline-bg: #eeeee8;
  --era-bg: rgba(99, 102, 241, 0.06);
  --era-border: rgba(99, 102, 241, 0.15);
  --card-hover: #f8f8f5;
  --tooltip-bg: #1a1a1a;
  --tooltip-text: #f5f5f0;
  --modal-bg: #ffffff;
  --grid-line: rgba(0,0,0,0.06);
}

[data-theme="dark"] {
  --color-bg: #0c0c10;
  --color-surface: #16161c;
  --color-surface-2: #1c1c24;
  --color-border: #2a2a36;
  --color-divider: #22222c;
  --color-text: #e4e4e8;
  --color-text-muted: #8888a0;
  --color-text-faint: #555568;
  --color-primary: #818cf8;
  --color-primary-hover: #a5b4fc;
  --color-glow: rgba(129, 140, 248, 0.2);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  --timeline-bg: #111118;
  --era-bg: rgba(129, 140, 248, 0.05);
  --era-border: rgba(129, 140, 248, 0.12);
  --card-hover: #1e1e28;
  --tooltip-bg: #2a2a36;
  --tooltip-text: #e4e4e8;
  --modal-bg: #16161c;
  --grid-line: rgba(255,255,255,0.04);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0c0c10;
    --color-surface: #16161c;
    --color-surface-2: #1c1c24;
    --color-border: #2a2a36;
    --color-divider: #22222c;
    --color-text: #e4e4e8;
    --color-text-muted: #8888a0;
    --color-text-faint: #555568;
    --color-primary: #818cf8;
    --color-primary-hover: #a5b4fc;
    --color-glow: rgba(129, 140, 248, 0.2);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
    --timeline-bg: #111118;
    --era-bg: rgba(129, 140, 248, 0.05);
    --era-border: rgba(129, 140, 248, 0.12);
    --card-hover: #1e1e28;
    --tooltip-bg: #2a2a36;
    --tooltip-text: #e4e4e8;
    --modal-bg: #16161c;
    --grid-line: rgba(255,255,255,0.04);
  }
}

/* ========================================
   HEADER
   ======================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
}

.header__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
}

.header__icon { flex-shrink: 0; }

.header__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: -0.02em;
}

.header__nav {
  display: flex;
  gap: var(--space-1);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 3px;
}

.header__nav-btn {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.header__nav-btn:hover {
  color: var(--color-text);
}

.header__nav-btn.active {
  background: var(--color-primary);
  color: #fff;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header__theme-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
}

.header__theme-toggle:hover {
  background: var(--color-surface);
  color: var(--color-text);
}

/* ========================================
   HERO
   ======================================== */

.hero {
  padding: clamp(var(--space-16), 10vw, var(--space-32)) var(--space-6) clamp(var(--space-12), 6vw, var(--space-20));
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}

.hero__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-4);
}

.hero__heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.05;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.hero__sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 540px;
  margin: 0 auto;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
  margin-top: var(--space-12);
  position: relative;
}

.hero__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.hero__stat-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  font-variant-numeric: tabular-nums lining-nums;
}

.hero__stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ========================================
   OVERVIEW
   ======================================== */

.overview {
  padding: 0 var(--space-6) var(--space-10);
}

.overview__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: var(--space-6);
  align-items: start;
}

.overview__copy {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background:
    radial-gradient(circle at top right, var(--color-glow), transparent 38%),
    linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-2) 100%);
  box-shadow: var(--shadow-sm);
}

.overview__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.overview__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.overview__desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-muted);
}

.overview__controls {
  margin-top: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.overview__controls-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.range-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.range-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-interactive);
}

.range-chip:hover {
  border-color: var(--color-text-faint);
  color: var(--color-text);
}

.range-chip.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

.overview__sources {
  margin-top: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.overview__sources a {
  color: var(--color-primary);
  text-decoration: none;
}

.overview__sources a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.arena-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.arena-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  position: relative;
  overflow: hidden;
  min-height: 100%;
}

.arena-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--arena-accent, var(--color-primary));
}

.arena-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.arena-card__eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-faint);
  margin-bottom: 6px;
}

.arena-card__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.arena-card__score {
  text-align: right;
  flex-shrink: 0;
}

.arena-card__score-label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.arena-card__score-value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
}

.arena-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-size: 11px;
  color: var(--color-text-faint);
}

.arena-card__metrics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.arena-card__metric {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  font-size: 11px;
  color: var(--color-text-muted);
}

.arena-card__metric strong {
  color: var(--color-text);
}

.arena-card__note {
  font-size: var(--text-xs);
  line-height: 1.65;
  color: var(--color-text-muted);
}

/* ========================================
   FILTERS
   ======================================== */

.filters {
  position: sticky;
  top: 52px;
  z-index: 90;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-3) var(--space-6);
}

.filters__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.filters__orgs {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  flex: 1;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 5px var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-interactive);
  white-space: nowrap;
}

.filter-chip:hover {
  border-color: var(--color-text-faint);
  color: var(--color-text);
}

.filter-chip.active {
  border-color: var(--chip-color, var(--color-primary));
  background: var(--chip-color, var(--color-primary));
  color: #fff;
}

.filter-chip__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--chip-color, var(--color-primary));
}

.filter-chip.active .filter-chip__dot {
  background: #fff;
}

.filters__search {
  min-width: 180px;
}

.filters__input {
  width: 100%;
  padding: 6px var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: var(--text-xs);
  color: var(--color-text);
  transition: all var(--transition-interactive);
}

.filters__input::placeholder {
  color: var(--color-text-faint);
}

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

/* ========================================
   VISUALIZATION SECTIONS
   ======================================== */

.main {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.viz-section {
  margin-top: var(--space-12);
}

.viz-section.hidden {
  display: none;
}

.viz-section__header {
  margin-bottom: var(--space-6);
}

.viz-section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.viz-section__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* Timeline Container */
.timeline-container {
  width: 100%;
  overflow-x: auto;
  overflow-y: visible;
  background: var(--timeline-bg);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  position: relative;
  -webkit-overflow-scrolling: touch;
}

.timeline-container svg {
  display: block;
}

.timeline-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: center;
  margin-bottom: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-2) 100%);
  box-shadow: var(--shadow-sm);
}

.timeline-toolbar__summary {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

.timeline-toolbar__controls {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.timeline-toolbar__label {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.timeline-toolbar__slider {
  width: 132px;
  accent-color: var(--color-primary);
}

.timeline-toolbar__value {
  min-width: 38px;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.timeline-toolbar__jump {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--text-xs);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-interactive);
}

.timeline-toolbar__jump:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-glow);
}

.timeline-toolbar__legend {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.timeline-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--color-text-muted);
}

.timeline-legend__dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--color-primary);
}

.timeline-legend__item--rumor .timeline-legend__dot {
  background: transparent;
  border: 2px dashed var(--color-primary);
}

/* Chart Container */
.chart-container {
  width: 100%;
  background: var(--timeline-bg);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.chart-container svg {
  display: block;
}

.chart-empty {
  min-height: 440px;
  display: grid;
  place-items: center;
  padding: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
}

/* ========================================
   ERA BANDS
   ======================================== */

.era-band {
  fill: var(--era-bg);
  stroke: var(--era-border);
  stroke-width: 1;
}

.era-label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  fill: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ========================================
   TOOLTIP
   ======================================== */

.tooltip {
  position: fixed;
  padding: var(--space-3) var(--space-4);
  background: var(--tooltip-bg);
  color: var(--tooltip-text);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  line-height: 1.5;
  pointer-events: none;
  z-index: 200;
  max-width: 280px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: opacity 150ms ease-out;
}

.tooltip.visible {
  opacity: 1;
}

.tooltip__name {
  font-weight: 700;
  font-family: var(--font-display);
  margin-bottom: 2px;
}

.tooltip__org {
  color: var(--color-text-faint);
  font-size: 11px;
}

.tooltip__params {
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}

.tooltip__rumor {
  margin-top: 4px;
  color: #f6d48b;
  font-weight: 600;
}

/* ========================================
   MODEL CARDS
   ======================================== */

.cards-section {
  margin-top: var(--space-16);
  margin-bottom: var(--space-16);
}

.cards-section__header {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.cards-section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.cards-section__count {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  font-weight: 500;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}

.model-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  cursor: pointer;
  transition: all var(--transition-interactive);
  position: relative;
  overflow: hidden;
}

.model-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--card-accent, var(--color-primary));
}

.model-card:hover {
  background: var(--card-hover);
  border-color: var(--color-text-faint);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.model-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.model-card__name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.model-card__org {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  color: #fff;
  white-space: nowrap;
  flex-shrink: 0;
}

.model-card__date {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-variant-numeric: tabular-nums;
}

.model-card__meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.model-card__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.model-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
}

.model-card__params {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.model-card__score {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-faint);
}

.model-card__bar {
  width: 60px;
  height: 4px;
  background: var(--color-divider);
  border-radius: 2px;
  overflow: hidden;
}

.model-card__bar-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--card-accent, var(--color-primary));
  transition: width 600ms var(--ease-out);
}

.model-card__flag {
  display: inline-flex;
  align-items: center;
  min-height: 20px;
  padding: 0 8px;
  border-radius: var(--radius-full);
  border: 1px dashed var(--card-accent, var(--color-primary));
  color: var(--card-accent, var(--color-primary));
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.model-card--rumor {
  border-style: dashed;
}

.model-card--rumor::before {
  background:
    repeating-linear-gradient(
      90deg,
      var(--card-accent, var(--color-primary)) 0 10px,
      transparent 10px 16px
    );
}

.model-card.hidden-card {
  display: none;
}

/* ========================================
   MODAL
   ======================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 300;
  display: grid;
  place-items: center;
  padding: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity 250ms var(--ease-out);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--modal-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  max-width: 520px;
  width: 100%;
  position: relative;
  transform: scale(0.95) translateY(10px);
  transition: transform 300ms var(--ease-out);
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  color: var(--color-text-muted);
  font-size: 20px;
  transition: all var(--transition-interactive);
}

.modal__close:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.modal__org-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  color: #fff;
  margin-bottom: var(--space-3);
}

.modal__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.modal__meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-variant-numeric: tabular-nums;
  margin-bottom: var(--space-4);
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.modal__meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.modal__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.modal__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.modal__tag {
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.modal__bar-container {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.modal__bar-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-faint);
  white-space: nowrap;
}

.modal__bar {
  flex: 1;
  height: 6px;
  background: var(--color-divider);
  border-radius: 3px;
  overflow: hidden;
}

.modal__bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 800ms var(--ease-out);
}

.modal__bar-value {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
  min-width: 28px;
  text-align: right;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-8);
}

.footer__text {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
}

.footer__link {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer__link:hover {
  color: var(--color-primary);
}

/* ========================================
   D3 CHART STYLES
   ======================================== */

.axis-label {
  font-family: var(--font-body);
  font-size: 11px;
  fill: var(--color-text-faint);
}

.axis line,
.axis path {
  stroke: var(--color-border);
}

.axis text {
  font-family: var(--font-body);
  font-size: 11px;
  fill: var(--color-text-faint);
}

.grid-line {
  stroke: var(--grid-line);
  stroke-dasharray: 2 4;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
  .overview__copy {
    padding: var(--space-6);
  }

  .overview__controls {
    align-items: flex-start;
  }

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

  .header__inner {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
  }

  .header__nav {
    order: 3;
    width: 100%;
    justify-content: center;
  }

  .hero__stats {
    gap: var(--space-6);
  }

  .hero__heading {
    font-size: var(--text-2xl);
  }

  .filters__inner {
    flex-direction: column;
    align-items: stretch;
  }

  .filters__orgs {
    justify-content: center;
  }

  .timeline-toolbar {
    grid-template-columns: 1fr;
    padding: var(--space-4);
  }

  .timeline-toolbar__controls {
    justify-content: flex-start;
  }

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

  .modal {
    padding: var(--space-5);
  }

  .modal__name {
    font-size: var(--text-lg);
  }
}

@media (max-width: 480px) {
  .hero__stats {
    flex-direction: column;
    gap: var(--space-4);
  }

  .overview__inner {
    gap: var(--space-4);
  }

  .header__nav-btn {
    font-size: 11px;
    padding: var(--space-1) var(--space-3);
  }

  .timeline-toolbar__controls {
    align-items: stretch;
  }

  .timeline-toolbar__slider {
    width: 100%;
  }
}

@media (max-width: 960px) {
  .overview__inner {
    grid-template-columns: 1fr;
  }
}