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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-width: 375px;
}

/* ─── Design Tokens ─────────────────────────────────────────────── */
:root {
  --bg-base: #0d0f12;
  --bg-surface: #161920;
  --bg-elevated: #1e2330;
  --text-primary: #e8eaf0;
  --text-secondary: #9aa0b4;
  --accent: #00c2a8;
  --accent-hover: #00a892;
  --accent-on: #0d0f12;
  --border-subtle: #2a2f3d;
  --border-default: #3a4057;
  --rag-green: #22c55e;
  --rag-amber: #f59e0b;
  --rag-red: #ef4444;
  --text-display-xl: 2rem;
  --text-display-lg: 1.75rem;
}

[data-theme="light"] {
  --bg-base: #f0f2f5;
  --bg-surface: #e4e7ed;
  --bg-elevated: #ffffff;
  --text-primary: #0d0f12;
  --text-secondary: #4a5068;
  --accent: #007a6b;
  --accent-hover: #006a5c;
  --accent-on: #ffffff;
  --border-subtle: #d0d4e0;
  --border-default: #b0b6c8;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg-base: #f0f2f5;
    --bg-surface: #e4e7ed;
    --bg-elevated: #ffffff;
    --text-primary: #0d0f12;
    --text-secondary: #4a5068;
    --accent: #007a6b;
    --accent-hover: #006a5c;
    --accent-on: #ffffff;
    --border-subtle: #d0d4e0;
    --border-default: #b0b6c8;
  }
}

/* ─── Layout Utilities ──────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ─── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: 'DM Sans', sans-serif;
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 150ms ease, color 150ms ease;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--accent-on);
  padding: 0.625rem 1.25rem;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--accent-hover);
}

.btn-lg {
  font-size: 1rem;
  padding: 0.875rem 2rem;
  height: 52px;
}

.btn-block {
  width: 100%;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ─── Navigation ────────────────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: transparent;
  transition: background-color 200ms ease, border-color 200ms ease;
  border-bottom: 1px solid transparent;
}

.site-nav.scrolled {
  background-color: var(--bg-surface);
  border-bottom-color: var(--border-subtle);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 64px;
}

.nav-logo {
  font-family: 'DM Mono', monospace;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  margin-right: auto;
  flex-shrink: 0;
}

.nav-links {
  display: none;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 150ms ease;
}

.nav-links a:hover { color: var(--text-primary); }

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 6px;
  transition: color 150ms ease, background-color 150ms ease;
}

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

.nav-cta { flex-shrink: 0; }

/* Mobile nav open state */
@media (max-width: 767px) {
  .nav-inner { position: relative; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1rem 1.25rem 1.25rem;
    gap: 1rem;
  }

  .nav-cta { display: none; }
}

@media (min-width: 768px) {
  .nav-toggle { display: none; }
  .nav-links { display: flex; }
}

/* ─── Hero ──────────────────────────────────────────────────────── */
.hero {
  min-height: 85dvh;
  display: flex;
  align-items: center;
  background-color: var(--bg-base);
  padding: 5rem 0 4rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-headline {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-display-xl);
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.hero-sub {
  font-family: 'DM Sans', sans-serif;
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin-top: 1.25rem;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.9375rem;
  color: var(--accent);
  text-decoration: none;
  transition: gap 150ms ease;
}

.hero-link:hover { gap: 0.625rem; }

.hero-helper {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-top: 0.875rem;
}

/* ─── Hero data card mockup ─────────────────────────────────────── */
.hero-visual {
  display: flex;
  justify-content: center;
}

.data-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  overflow: hidden;
  width: 100%;
  max-width: 480px;
}

.data-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.data-card-title {
  font-family: 'DM Sans', sans-serif;
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.data-badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2em 0.65em;
  border-radius: 4px;
}

.data-badge--green {
  background-color: color-mix(in srgb, var(--rag-green) 15%, transparent);
  color: var(--rag-green);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
}

.data-table th {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: left;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.data-table td {
  padding: 0.5625rem 1rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

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

.data-value {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
}

.tx-badge {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 0.15em 0.5em;
  border-radius: 4px;
}

.tx-badge--bought {
  background-color: color-mix(in srgb, var(--rag-green) 15%, transparent);
  color: var(--rag-green);
}

.tx-badge--sold {
  background-color: color-mix(in srgb, var(--rag-red) 15%, transparent);
  color: var(--rag-red);
}

.tx-badge--reclaimed {
  background-color: color-mix(in srgb, var(--rag-amber) 15%, transparent);
  color: var(--rag-amber);
}

.data-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1rem;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
}

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

.data-value-lg {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.125rem;
  color: var(--accent);
}

/* ─── Mobile sticky CTA bar ─────────────────────────────────────── */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.75rem 1.25rem;
  background-color: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  z-index: 90;
  padding-bottom: calc(0.75rem + env(safe-area-inset-bottom));
}

.mobile-cta-bar.visible { display: block; }

@media (min-width: 768px) {
  .mobile-cta-bar { display: none !important; }
}

/* ─── Desktop hero: two-column layout ──────────────────────────── */
@media (min-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }

  .hero-headline {
    font-size: 2.75rem;
  }

  :root {
    --text-display-xl: 2.25rem;
  }
}