/* === Pharos Privacy — shared tokens & primitives ========================
   Light mode is default. Add `class="dark"` to <html> for night mode.
   ========================================================================= */
:root {
  /* Surfaces */
  --bg: #F6F2EA;            /* main page background */
  --bg-soft: #EDE6D6;       /* card / section accent */
  --bg-deep: #E4DDC9;       /* deeper neutral */
  --feature: #0E1F2C;       /* hero / featured-dark sections */
  --feature-deep: #081621;  /* deepest layer (footer / ticker) */
  --on-feature: #F6F2EA;
  --on-feature-soft: #C9C2B0;

  /* Foregrounds */
  --fg: #0E1F2C;
  --fg-soft: #1A3043;
  --fg-mute: #6A7785;
  --fg-faint: #8B97A4;

  /* Accent — brass beam */
  --accent: #C9A35B;
  --accent-soft: #D9B872;
  --accent-pale: #F2E4C4;
  --accent-deep: #A6843F;

  /* State */
  --success: #2D7A4F;
  --warn: #C97A2A;
  --danger: #B43A3A;

  /* Lines */
  --border: color-mix(in oklab, var(--fg) 10%, transparent);
  --border-strong: color-mix(in oklab, var(--fg) 20%, transparent);

  /* Type */
  --f-display: 'Bricolage Grotesque', system-ui, sans-serif;
  --f-text: 'IBM Plex Sans', system-ui, sans-serif;
  --f-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Layout */
  --max-w: 1320px;
  --gutter: 64px;

  /* Legacy aliases so existing styles keep working */
  --paper: var(--bg);
  --paper-warm: var(--bg-soft);
  --paper-darker: var(--bg-deep);
  --ink: var(--fg);
  --ink-soft: var(--fg-soft);
  --ink-deeper: var(--feature-deep);
  --beam: var(--accent);
  --beam-soft: var(--accent-soft);
  --beam-pale: var(--accent-pale);
  --mute: var(--fg-mute);
  --mute-soft: var(--fg-faint);
  --line: var(--fg-soft);
}

:root.dark {
  --bg: #0A1620;
  --bg-soft: #122530;
  --bg-deep: #0F2029;
  --feature: #050F17;
  --feature-deep: #020810;
  --on-feature: #ECE5D2;
  --on-feature-soft: #ACA593;

  --fg: #ECE5D2;
  --fg-soft: #C4BFB0;
  --fg-mute: #8B95A0;
  --fg-faint: #6A7785;

  --accent: #D9B872;
  --accent-soft: #E6CB94;
  --accent-pale: #F2E4C4;
  --accent-deep: #C9A35B;

  --border: color-mix(in oklab, var(--fg) 14%, transparent);
  --border-strong: color-mix(in oklab, var(--fg) 26%, transparent);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--f-text);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.25s ease, color 0.25s ease;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; }

/* Helpers ================================================================ */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter); }
.eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--accent); }
.eyebrow.no-dash::before { display: none; }
.on-dark .eyebrow { color: var(--accent-soft); }
.on-dark .eyebrow::before { background: var(--accent-soft); }

.display {
  font-family: var(--f-display);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.0;
  text-wrap: balance;
}

/* Buttons ================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 11px 16px;
  border-radius: 2px;
  transition: all 0.18s;
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
}
.btn .arrow { display: inline-block; transition: transform 0.18s; }
.btn:hover .arrow { transform: translateX(2px); }
.btn.primary { background: var(--feature); color: var(--on-feature); }
.btn.primary:hover { background: var(--feature-deep); }
.btn.ghost { border-color: var(--border-strong); color: var(--fg); }
.btn.ghost:hover { border-color: var(--fg); }
.btn.brass { background: var(--accent); color: var(--feature); }
.btn.brass:hover { background: var(--accent-soft); }
.btn.on-dark.ghost { border-color: color-mix(in oklab, var(--on-feature) 22%, transparent); color: var(--on-feature); }
.btn.on-dark.ghost:hover { border-color: var(--on-feature); }

/* Lockup ================================================================ */
.lockup { display: inline-flex; align-items: center; gap: 12px; }
.lockup .wordmark { display: flex; flex-direction: column; }
.lockup .name {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 22px;
  line-height: 0.95;
  letter-spacing: -0.025em;
  color: var(--fg);
}
.lockup .tagline {
  font-family: var(--f-mono);
  font-size: 9px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 4px;
}
.lockup.on-dark .name { color: var(--on-feature); }
.lockup.on-dark .tagline { color: var(--accent-pale); }

/* ===== Site Nav (shared across pages) ================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 32px;
}
.nav-links {
  display: flex;
  gap: 28px;
  font-size: 13.5px;
  color: var(--fg-soft);
  justify-self: center;
}
.nav-links a { transition: color 0.15s; position: relative; }
.nav-links a:hover { color: var(--accent); }
.nav-links a.is-active { color: var(--accent); }
.nav-links a.is-active::after {
  content: "";
  position: absolute;
  bottom: -6px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
}
.nav-right { display: flex; justify-content: flex-end; align-items: center; gap: 14px; }

/* Lang switcher + dark toggle ============================================ */
.lang-switch {
  display: inline-flex;
  align-items: center;
  background: color-mix(in oklab, var(--fg) 6%, transparent);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.lang-switch button {
  background: transparent;
  border: 0;
  color: var(--fg-mute);
  padding: 5px 10px;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  transition: all 0.15s;
}
.lang-switch button:hover { color: var(--fg); }
.lang-switch button.is-active {
  background: var(--feature);
  color: var(--on-feature);
}

.mode-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  transition: all 0.18s;
}
.mode-toggle:hover { border-color: var(--fg); }
.mode-toggle .sun { display: block; }
.mode-toggle .moon { display: none; }
:root.dark .mode-toggle .sun { display: none; }
:root.dark .mode-toggle .moon { display: block; }

/* ===== Footer (shared) ================================================== */
.site-footer {
  background: var(--feature-deep);
  color: color-mix(in oklab, var(--on-feature) 70%, transparent);
  padding: 72px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 64px;
  padding-bottom: 56px;
  border-bottom: 1px solid color-mix(in oklab, var(--on-feature) 12%, transparent);
}
.footer-grid .brand p {
  font-size: 14px;
  color: color-mix(in oklab, var(--on-feature) 65%, transparent);
  max-width: 36ch;
  margin: 20px 0 0;
}
.footer-grid h6 {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-pale);
  margin: 0 0 18px;
  font-weight: 500;
}
.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14px;
}
.footer-grid a { color: color-mix(in oklab, var(--on-feature) 78%, transparent); transition: color 0.15s; }
.footer-grid a:hover { color: var(--on-feature); }
.footer-grid .brand .lockup .name { color: var(--on-feature); }
.footer-grid .brand .lockup .tagline { color: var(--accent-pale); }

.footer-foot {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--on-feature) 50%, transparent);
}

/* ===== Section helpers ================================================== */
section.s { padding: 120px 0; border-top: 1px solid var(--border); }
section.s:first-of-type { border-top: 0; }
section.s.dark, section.s.feature {
  background: var(--feature);
  color: var(--on-feature);
  border-top-color: transparent;
}
section.s.dark .display, section.s.feature .display { color: var(--on-feature); }
section.s.warm { background: var(--bg-soft); }

.s-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-bottom: 64px;
  align-items: end;
}
.s-head h2 {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 14px 0 0;
  text-wrap: balance;
}
.s-head h2 em { font-style: normal; color: var(--accent); }
.s-head .copy {
  font-size: 17px;
  color: var(--fg-soft);
  line-height: 1.55;
  max-width: 50ch;
}
section.s.dark .s-head .copy, section.s.feature .s-head .copy {
  color: color-mix(in oklab, var(--on-feature) 78%, transparent);
}

/* ===== Mobile ============================================================ */
@media (max-width: 900px) {
  :root { --gutter: 28px; }
  .nav-links { display: none; }
  .nav-inner { grid-template-columns: 1fr auto; }
  .s-head { grid-template-columns: 1fr; gap: 24px; margin-bottom: 40px; }
  section.s { padding: 80px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
