*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  background: var(--surface-0);
  color: var(--ink-900);
  font-family: var(--font-sans);
  line-height: 1.5;
}

a {
  color: inherit;
}

/* ---------- CA bar: always visible, top of page, large font ---------- */
.ca-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 10px 20px;
  background: color-mix(in srgb, var(--brand-900) 96%, black 4%);
  color: var(--canvas-0);
  font-size: 1.05rem;
}

.ca-bar__label {
  font-weight: 600;
  opacity: 0.75;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.ca-bar__value {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  word-break: break-all;
}

.ca-bar[data-state="absent"] .ca-bar__value,
.ca-bar[data-state="unconfirmed"] .ca-bar__value {
  opacity: 0.6;
  font-style: italic;
  font-weight: 400;
}

.ca-bar__copy {
  min-width: 44px;
  min-height: 44px;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--canvas-0) 35%, transparent);
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-standard);
}

.ca-bar__copy:hover:not(:disabled) {
  background: color-mix(in srgb, var(--canvas-0) 16%, transparent);
}

.ca-bar__copy:disabled {
  cursor: not-allowed;
  opacity: 0.35;
}

.ca-bar__note {
  font-size: 0.78rem;
  opacity: 0.65;
  margin-left: auto;
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 20px;
  background: color-mix(in srgb, var(--surface-0) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-200);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink-900);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand__mark {
  display: block;
  border-radius: 6px;
}

.site-nav {
  display: flex;
  gap: 18px;
  font-size: 0.92rem;
  color: var(--ink-700);
}

.site-nav a {
  text-decoration: none;
  padding: 6px 2px;
}

.site-nav a:hover {
  color: var(--brand-700);
}

.social-row {
  margin-left: auto;
  display: flex;
  gap: 6px;
}

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  color: var(--ink-700);
  transition: background var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
}

.social-icon[data-state="unconfirmed"],
.social-icon[data-state="absent"] {
  color: var(--ink-500);
  cursor: default;
  opacity: 0.55;
}

.social-icon[data-state="stated"]:hover {
  color: var(--brand-700);
  background: var(--surface-2);
}

/* ---------- hero ---------- */
.hero {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 20px 48px;
  text-align: center;
}

.eyebrow {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-700);
  font-weight: 700;
  margin: 0 0 14px;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  line-height: 1.12;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--brand-900), var(--brand-500));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__lede {
  color: var(--ink-700);
  font-size: 1.05rem;
  max-width: 60ch;
  margin: 0 auto 30px;
}

.hero__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-md);
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard);
}

.btn--primary {
  background: var(--brand-700);
  color: var(--canvas-0);
}

.btn--primary:hover:not(:disabled) {
  background: var(--brand-900);
}

.btn--primary:disabled {
  background: var(--surface-2);
  color: var(--ink-500);
  cursor: not-allowed;
}

.btn--ghost {
  background: transparent;
  border-color: var(--line-200);
  color: var(--ink-900);
}

.btn--ghost:hover {
  border-color: var(--brand-500);
  color: var(--brand-700);
}

@media (prefers-reduced-motion: no-preference) {
  .btn:active:not(:disabled) {
    transform: scale(0.97);
  }
}

/* ---------- panels ---------- */
.panel {
  max-width: 980px;
  margin: 0 auto;
  padding: 40px 20px;
}

.panel--muted {
  background: var(--surface-1);
  border-radius: var(--radius-lg);
  margin: 0 20px 60px;
  max-width: none;
}

.panel--muted > * {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.panel h2 {
  font-size: 1.5rem;
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}

.panel__lede {
  color: var(--ink-700);
  max-width: 68ch;
  margin: 0 0 22px;
}

.panel__lede code,
.registry-card__note code {
  font-family: var(--font-mono);
  background: var(--surface-2);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.88em;
}

.source-note {
  font-size: 0.82rem;
  color: var(--ink-500);
  margin-top: 16px;
}

/* ---------- stat tiles ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.stat-tile {
  border: 1px solid var(--line-200);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  background: var(--surface-1);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-tile--wide {
  grid-column: 1 / -1;
}

.stat-tile__label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-500);
}

.stat-tile__value {
  font-size: 1.15rem;
  font-weight: 600;
}

.stat-tile__value--mono {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  word-break: break-all;
}

/* ---------- registry cards ---------- */
.registry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.registry-card {
  border: 1px solid var(--line-200);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  background: var(--surface-0);
  transition: border-color var(--duration-med) var(--ease-standard);
}

.registry-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.registry-card__kind {
  font-weight: 700;
  font-size: 0.95rem;
}

.registry-card__value {
  margin: 0 0 8px;
  color: var(--ink-700);
  font-size: 0.92rem;
}

.registry-card__note {
  margin: 0;
  color: var(--ink-500);
  font-size: 0.82rem;
}

.pill {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 9px;
  border-radius: 999px;
}

.pill--absent {
  background: color-mix(in srgb, var(--danger) 14%, var(--surface-0));
  color: var(--danger);
}

.pill--unconfirmed {
  background: var(--surface-2);
  color: var(--ink-700);
}

.pill--stated {
  background: color-mix(in srgb, var(--brand-500) 16%, var(--surface-0));
  color: var(--brand-900);
}

/* ---------- footer ---------- */
.site-footer {
  padding: 40px 20px 60px;
  border-top: 1px solid var(--line-200);
  max-width: 760px;
  margin: 0 auto;
}

.site-footer__lede {
  font-weight: 600;
  margin: 14px 0 8px;
}

.site-footer__legal {
  color: var(--ink-500);
  font-size: 0.85rem;
  max-width: 65ch;
}

@media (max-width: 640px) {
  .site-header {
    gap: 12px;
  }
  .site-nav {
    display: none;
  }
  .ca-bar__note {
    margin-left: 0;
    flex-basis: 100%;
  }
}