/* Gestdoc — Design System v2 (Warm+Blue hybrid, Space Grotesk) */

:root {
  /* Type — Space Grotesk (display + UI) + IBM Plex Mono */
  --font-display: 'Space Grotesk', 'Helvetica Neue', Helvetica, sans-serif;
  --font-ui: 'Space Grotesk', 'Helvetica Neue', Helvetica, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  /* Base — Warm+Blue hybrid (DEFAULT) */
  --bg: oklch(0.975 0.01 82);
  --bg-elev: oklch(0.993 0.005 82);
  --surface: oklch(0.955 0.014 80);
  --ink: oklch(0.20 0.035 252);
  --ink-2: oklch(0.42 0.028 252);
  --ink-3: oklch(0.60 0.022 252);
  --rule: oklch(0.88 0.012 75);
  --rule-strong: oklch(0.76 0.018 75);

  /* Brand */
  --blue: oklch(0.42 0.15 252);
  --blue-deep: oklch(0.30 0.13 252);
  --blue-tint: oklch(0.94 0.025 252);
  --amber: oklch(0.62 0.15 58);
  --amber-deep: oklch(0.48 0.15 55);
  --amber-tint: oklch(0.95 0.035 65);

  --primary: var(--blue);
  --accent: var(--amber);

  --r-sm: 4px;
  --r: 8px;
  --r-lg: 14px;
  --maxw: 1280px;
}

/* Variant: Cool corporate (deep blue + cool ink) */
body[data-variant="corporate"] {
  --bg: oklch(0.98 0.005 250);
  --bg-elev: oklch(1 0 0);
  --surface: oklch(0.96 0.008 250);
  --ink: oklch(0.18 0.035 252);
  --ink-2: oklch(0.40 0.028 252);
  --ink-3: oklch(0.58 0.02 252);
  --rule: oklch(0.89 0.01 252);
  --rule-strong: oklch(0.78 0.014 252);
  --blue: oklch(0.40 0.16 250);
  --blue-tint: oklch(0.93 0.03 252);
  --amber: oklch(0.64 0.14 60);
  --amber-tint: oklch(0.94 0.03 65);
}

/* Variant: Dark (inverted warm+blue) */
body[data-variant="dark"] {
  --bg: oklch(0.15 0.012 252);
  --bg-elev: oklch(0.19 0.016 252);
  --surface: oklch(0.22 0.02 252);
  --ink: oklch(0.97 0.005 82);
  --ink-2: oklch(0.78 0.012 82);
  --ink-3: oklch(0.58 0.015 250);
  --rule: oklch(0.28 0.02 252);
  --rule-strong: oklch(0.38 0.025 252);
  --blue: oklch(0.72 0.14 252);
  --blue-tint: oklch(0.25 0.04 252);
  --amber: oklch(0.74 0.14 62);
  --amber-tint: oklch(0.28 0.05 65);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.01em;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

.display { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.03em; }
.mono { font-family: var(--font-mono); letter-spacing: 0; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  font-weight: 400;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px) { .container { padding: 0 20px; } }

/* ============ NAV ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklch, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.02em;
}
.nav-brand .logo {
  width: 24px; height: 24px;
  display: inline-flex; align-items: center; justify-content: center;
}
.nav-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--ink-2);
  font-weight: 500;
}
.nav-links a { position: relative; }
.nav-links a:hover { color: var(--ink); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -22px;
  height: 2px;
  background: var(--amber);
}
.nav-cta { display: flex; align-items: center; gap: 10px; }
@media (max-width: 820px) { .nav-links { display: none; } }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 42px;
  padding: 0 18px;
  border-radius: var(--r);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
  font-family: inherit;
}
.btn:hover { transform: translateY(-1px); }
.btn svg { width: 14px; height: 14px; }
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover { background: var(--blue-deep); }
.btn-accent {
  background: var(--amber);
  color: oklch(0.99 0 0);
}
.btn-accent:hover { background: var(--amber-deep); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule-strong);
}
.btn-ghost:hover { background: var(--surface); border-color: var(--ink); }
.btn-lg { height: 50px; padding: 0 22px; font-size: 15px; }

/* ============ SECTION ============ */
section { padding: 112px 0; border-top: 1px solid var(--rule); position: relative; }
section:first-of-type { border-top: none; }
@media (max-width: 720px) { section { padding: 72px 0; } }

.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  margin-bottom: 64px;
  align-items: end;
}
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(36px, 4.6vw, 60px);
  line-height: 1;
  letter-spacing: -0.035em;
  margin: 12px 0 0;
  text-wrap: balance;
}
.section-head p {
  font-size: 17px;
  color: var(--ink-2);
  max-width: 54ch;
  margin: 0;
  text-wrap: pretty;
  line-height: 1.5;
}
@media (max-width: 820px) {
  .section-head { grid-template-columns: 1fr; gap: 20px; }
}

/* ============ PILL / BADGE ============ */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 28px;
  padding: 0 12px;
  border-radius: 100px;
  border: 1px solid var(--rule-strong);
  background: var(--bg-elev);
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-2);
}
.pill::before {
  content: '';
  width: 6px; height: 6px; border-radius: 100px;
  background: var(--amber);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--amber) 20%, transparent);
}
.pill-blue::before { background: var(--blue); box-shadow: 0 0 0 3px color-mix(in oklch, var(--blue) 18%, transparent); }

/* ============ CARDS ============ */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
}

/* ============ FOOTER ============ */
.footer {
  border-top: 1px solid var(--rule);
  padding: 80px 0 40px;
  background: var(--bg);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
.footer h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  font-weight: 400;
  margin: 0 0 16px;
}
.footer ul { list-style: none; padding: 0; margin: 0; font-size: 14px; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { color: var(--ink-2); }
.footer ul a:hover { color: var(--ink); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
  font-size: 12.5px;
  color: var(--ink-3);
  flex-wrap: wrap;
  gap: 16px;
}
@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ============ ICONS ============ */
.icon {
  width: 24px; height: 24px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon-lg { width: 40px; height: 40px; stroke-width: 1.2; }

/* ============ REVEAL / ANIM ============ */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .8s ease, transform .8s ease;
  transition-delay: var(--delay, 0s);
}
[data-reveal].in {
  opacity: 1;
  transform: translateY(0);
}

@keyframes draw {
  from { stroke-dashoffset: var(--dash, 500); }
  to { stroke-dashoffset: 0; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.4); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.hover-lift {
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.hover-lift:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px -12px color-mix(in oklch, var(--ink) 15%, transparent);
  border-color: var(--rule-strong);
}

/* ============ TWEAKS PANEL ============ */
.tweaks-panel {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 280px;
  background: var(--bg-elev);
  border: 1px solid var(--rule-strong);
  border-radius: 12px;
  padding: 16px;
  z-index: 100;
  font-family: var(--font-ui);
  box-shadow: 0 20px 40px -10px rgba(0,0,0,0.15), 0 4px 12px -4px rgba(0,0,0,0.08);
  display: none;
}
.tweaks-panel.open { display: block; }
.tweaks-panel h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  font-weight: 400;
  margin: 0 0 12px;
}
.tweaks-panel label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  margin-bottom: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: background .12s, border-color .12s;
}
.tweaks-panel label:hover { background: var(--surface); }
.tweaks-panel label.active {
  border-color: var(--ink);
  background: var(--surface);
}
.tweaks-panel label .swatch {
  width: 18px; height: 18px; border-radius: 5px;
  border: 1px solid var(--rule);
}
.tweaks-panel input { margin: 0; }

/* ============ PAGE LAYOUT (for subpages) ============ */
.page-hero {
  padding: 88px 0 64px;
  border-bottom: 1px solid var(--rule);
  background: var(--bg);
}
.page-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 56px;
  align-items: end;
}
.page-hero-inner .crumbs {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  display: flex; gap: 10px; align-items: center;
  margin-bottom: 20px;
}
.page-hero-inner .crumbs a:hover { color: var(--ink); }
.page-hero-inner .crumbs .sep { opacity: 0.5; }
.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(44px, 5.4vw, 76px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin: 0;
  text-wrap: balance;
}
.page-hero .lede {
  font-size: 18px;
  color: var(--ink-2);
  max-width: 54ch;
  line-height: 1.5;
  margin: 0;
  text-wrap: pretty;
}
@media (max-width: 820px) {
  .page-hero-inner { grid-template-columns: 1fr; gap: 24px; align-items: start; }
  .page-hero { padding: 56px 0 40px; }
}

.page-body { padding: 88px 0 120px; }
.page-body h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(28px, 3vw, 40px);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0 0 20px;
  text-wrap: balance;
}
.page-body h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 10px;
}
.page-body p { color: var(--ink-2); line-height: 1.6; margin: 0 0 14px; font-size: 15px; }
.page-body p.lead { font-size: 17px; color: var(--ink); }

.legal-doc-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 72px;
}
.doc-toc {
  position: sticky;
  top: 96px;
  align-self: start;
  font-size: 13.5px;
}
.doc-toc ol { list-style: none; padding: 0; margin: 0; counter-reset: toc; }
.doc-toc li { margin-bottom: 10px; counter-increment: toc; padding-left: 28px; position: relative; color: var(--ink-2); }
.doc-toc li::before {
  content: counter(toc, decimal-leading-zero);
  position: absolute; left: 0; top: 1px;
  font-family: var(--font-mono); font-size: 10.5px;
  color: var(--ink-3); letter-spacing: 0.08em;
}
.doc-toc a { color: var(--ink-2); }
.doc-toc a:hover { color: var(--ink); }
.doc-toc .toc-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  margin-bottom: 16px;
}
.doc-article > section + section { margin-top: 56px; padding-top: 56px; border-top: 1px solid var(--rule); }
.doc-article ul { color: var(--ink-2); line-height: 1.7; padding-left: 20px; margin: 10px 0 16px; }
.doc-article ul li { margin-bottom: 6px; }
.doc-article .clause-num {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--amber);
  margin-bottom: 10px;
  display: inline-block;
}
@media (max-width: 900px) {
  .legal-doc-grid { grid-template-columns: 1fr; gap: 32px; }
  .doc-toc { position: static; border-bottom: 1px solid var(--rule); padding-bottom: 20px; }
}

.page-bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.page-bento .card { padding: 28px; }
.page-bento .card h3 { margin-bottom: 8px; }
.page-bento .card p { font-size: 14px; margin: 0; }
@media (max-width: 820px) { .page-bento { grid-template-columns: 1fr; } }

.cta-block {
  margin-top: 96px;
  padding: 56px;
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--r-lg);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: end;
}
.cta-block h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(28px, 3vw, 42px);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0;
  color: var(--bg);
  text-wrap: balance;
}
.cta-block p { color: oklch(from var(--bg) l c h / 0.75); margin: 14px 0 0; max-width: 42ch; }
.cta-block .cta-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }
.cta-block .btn-primary { background: var(--amber); color: oklch(0.99 0 0); }
.cta-block .btn-primary:hover { background: var(--amber-deep); }
.cta-block .btn-ghost { border-color: oklch(from var(--bg) l c h / 0.3); color: var(--bg); }
.cta-block .btn-ghost:hover { background: oklch(from var(--bg) l c h / 0.1); border-color: var(--bg); }
@media (max-width: 820px) {
  .cta-block { grid-template-columns: 1fr; padding: 32px; }
  .cta-block .cta-actions { justify-content: flex-start; }
}