/* ============================================
   Ink-well Landing — Stylesheet
   Design system: see DESIGN.md
   ============================================ */

:root {
  --bg:         #F8F6F1;
  --surface:    #FFFFFF;
  --ink:        #0A0A0A;
  --ink-muted:  #6B6B6B;
  --accent:     #D93800;
  --rule:       #1A1A1A;

  --max:        1280px;
  --text-col:   640px;
  --nav-h:      72px;

  --space-1:    8px;
  --space-2:    16px;
  --space-3:    24px;
  --space-4:    32px;
  --space-6:    48px;
  --space-8:    64px;
  --space-12:   96px;
  --space-16:   128px;
  --space-20:   160px;

  --ease:       cubic-bezier(0.2, 0.6, 0.2, 1);
  --dur:        200ms;
}

/* ----- Reset ----- */
*,
*::before,
*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter Tight', system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Subtle paper grain */
  background-image:
    radial-gradient(circle at 1px 1px, rgba(10,10,10,0.025) 1px, transparent 0);
  background-size: 4px 4px;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ----- Typography ----- */
.display,
.h2,
.display-cta {
  font-family: 'Fraunces', 'Songti SC', 'Source Han Serif', serif;
  font-weight: 400;
  font-variation-settings: "opsz" 144;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
}

.display {
  font-size: clamp(48px, 7vw, 104px);
  margin-top: var(--space-4);
}
.display-cta {
  font-size: clamp(40px, 6vw, 80px);
  text-align: center;
}

.h2 {
  font-size: clamp(32px, 4vw, 56px);
  margin-top: var(--space-2);
  margin-bottom: var(--space-8);
}

.lede {
  font-size: clamp(18px, 1.4vw, 22px);
  line-height: 1.5;
  color: var(--ink);
  max-width: 640px;
  margin: var(--space-6) 0;
}

.eyebrow,
.section-label,
.meta,
.footer-meta {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.section-label { margin: 0 0 var(--space-2); }
.eyebrow { margin: 0; color: var(--accent); }

.muted { color: var(--ink-muted); }
.accent { color: var(--accent); font-style: italic; }

.meta { font-size: 12px; text-transform: none; letter-spacing: 0; margin-top: var(--space-3); }

/* ----- Layout ----- */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.container-narrow { max-width: 720px; }

.section {
  padding: var(--space-16) 0;
  border-bottom: 1px solid var(--rule);
  /* scroll-linked fade-in */
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}
.section.in { opacity: 1; transform: none; }
.section:last-of-type { border-bottom: none; }

/* ----- Nav ----- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248, 246, 241, 0.85);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.brand {
  display: inline-flex;
  align-items: center;
  /* Logo has its own dark background, so the brand slot needs
     a bit of negative space so the glow doesn't crowd the nav links. */
  margin-left: -8px;
  padding: 4px 0;
}
.brand-mark {
  display: block;
}
.brand-logo {
  height: 64px;
  width: auto;
  /* The logo's own dark frame lives in the image — no filter needed.
     Slight vertical lift so the visual center aligns with nav text. */
  transform: translateY(2px);
}
.brand-dot { color: var(--accent); }
.nav-links {
  display: flex;
  gap: var(--space-6);
  flex: 1;
}
.nav-links a {
  font-size: 14px;
  color: var(--ink);
  position: relative;
  padding: 4px 0;
  transition: color var(--dur) var(--ease);
}
.nav-links a:hover { color: var(--accent); }
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}
.nav-links a:hover::after { transform: scaleX(1); }

@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-inner { gap: var(--space-3); }
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--bg);
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: var(--bg); }
.btn-text {
  background: transparent;
  border: none;
  color: var(--ink);
  padding: 12px 4px;
}
.btn-text:hover { color: var(--accent); transform: none; }
.btn-large {
  padding: 18px 36px;
  font-size: 17px;
}

/* ----- Hero ----- */
.hero {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
  border-bottom: 1px solid var(--rule);
}
.cta-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}

/* ----- How ----- */
.steps {
  list-style: none;
  padding: 0;
  margin: var(--space-8) 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  border-top: 1px solid var(--rule);
  padding-top: var(--space-8);
}
.step-num {
  font-family: 'Fraunces', serif;
  font-size: 64px;
  font-variation-settings: "opsz" 144;
  line-height: 1;
  color: var(--accent);
  display: block;
  margin-bottom: var(--space-3);
}
.step h3 {
  font-family: 'Fraunces', serif;
  font-size: 24px;
  font-weight: 500;
  margin: 0 0 var(--space-2);
}
.step p { color: var(--ink-muted); margin: 0; }

@media (max-width: 760px) {
  .steps { grid-template-columns: 1fr; gap: var(--space-6); }
}

/* ----- Features ----- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-12) var(--space-8);
  margin-top: var(--space-12);
  border-top: 1px solid var(--rule);
  padding-top: var(--space-8);
}
.feature {
  position: relative;
  padding: var(--space-2) 0 var(--space-6);
  border-bottom: 1px solid var(--rule);
  min-height: 200px;
  display: flex;
  flex-direction: column;
}
.feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 400ms var(--ease);
}
.feature:hover::before { width: 64px; }
.feature-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 0 0 var(--space-4);
}
.feature h3 {
  font-family: 'Fraunces', serif;
  font-size: 36px;
  font-weight: 400;
  font-variation-settings: "opsz" 144;
  margin: 0 0 var(--space-3);
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.feature p {
  color: var(--ink-muted);
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  max-width: 480px;
}

/* Tall variant — stretches taller, generous spacing */
.feature-tall {
  min-height: 280px;
  justify-content: flex-start;
  gap: var(--space-2);
}

/* Dark variant — inverts to anchor the section */
.feature-dark {
  background: var(--ink);
  color: var(--bg);
  padding: var(--space-6);
  margin: 0 calc(var(--space-4) * -1);
  border-bottom: none;
}
.feature-dark h3 { color: var(--bg); }
.feature-dark p { color: rgba(248,246,241,0.7); }
.feature-dark::before { background: var(--accent); }
.feature-dark .feature-num { color: var(--accent); }

@media (max-width: 760px) {
  .feature-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .feature-dark { margin: 0; }
  .feature h3 { font-size: 28px; }
}

/* ----- Demo ----- */
.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
}
.demo-pane {
  background: var(--surface);
  border: 1px solid var(--rule);
  padding: var(--space-6);
  min-height: 280px;
  display: flex;
  flex-direction: column;
}
.demo-pane-accent {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.demo-pane-accent .demo-label,
.demo-pane-accent .demo-prompt { color: var(--bg); opacity: 0.7; }
.demo-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 var(--space-3);
}
.demo-text {
  font-family: 'Fraunces', serif;
  font-size: 22px;
  line-height: 1.4;
  font-variation-settings: "opsz" 72;
  margin: 0 0 var(--space-4);
  white-space: pre-wrap;
  flex: 1;
}
.demo-prompt {
  font-size: 13px;
  color: var(--ink-muted);
  margin: 0;
  border-top: 1px solid currentColor;
  padding-top: var(--space-3);
  opacity: 0.6;
}
@media (max-width: 760px) {
  .demo-grid { grid-template-columns: 1fr; }
}

/* ----- Voices ----- */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-6);
}
.quote {
  margin: 0;
  padding: 0;
}
.quote p {
  font-family: 'Fraunces', serif;
  font-size: 24px;
  line-height: 1.4;
  font-variation-settings: "opsz" 72;
  margin: 0 0 var(--space-4);
  letter-spacing: -0.01em;
}
.quote footer {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
@media (max-width: 760px) {
  .quote-grid { grid-template-columns: 1fr; gap: var(--space-8); }
}

/* ----- Pricing ----- */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-1);
  margin-top: var(--space-6);
  background: var(--rule);
  border: 1px solid var(--rule);
}
.price-card {
  background: var(--bg);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  position: relative;
}
.price-card h3 {
  font-family: 'Fraunces', serif;
  font-size: 24px;
  font-weight: 500;
  margin: 0 0 var(--space-2);
}
.price {
  font-family: 'Fraunces', serif;
  font-size: 48px;
  font-variation-settings: "opsz" 144;
  margin: 0 0 var(--space-6);
  letter-spacing: -0.02em;
}
.price span {
  font-size: 16px;
  color: var(--ink-muted);
  font-family: 'Inter Tight', sans-serif;
  letter-spacing: 0;
}
.price-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-6);
  flex: 1;
}
.price-card li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid rgba(26,26,26,0.15);
  font-size: 15px;
}
.price-card li:last-child { border-bottom: none; }
.price-card .btn { width: 100%; }
.badge {
  position: absolute;
  top: -10px;
  right: var(--space-6);
  background: var(--accent);
  color: var(--bg);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
}
.price-card-featured { background: var(--ink); color: var(--bg); }
.price-card-featured .price { color: var(--bg); }
.price-card-featured .price span { color: rgba(248,246,241,0.6); }
.price-card-featured li { border-color: rgba(248,246,241,0.2); }
.price-card-featured .btn-primary {
  background: var(--accent);
  border-color: var(--accent);
}
.price-card-featured .btn-primary:hover { background: var(--bg); color: var(--ink); border-color: var(--bg); }

@media (max-width: 760px) {
  .price-grid { grid-template-columns: 1fr; }
}

/* ----- FAQ ----- */
.qa {
  border-bottom: 1px solid var(--rule);
  padding: var(--space-4) 0;
}
.qa summary {
  font-family: 'Fraunces', serif;
  font-size: 22px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after {
  content: '+';
  font-family: 'JetBrains Mono', monospace;
  font-size: 24px;
  color: var(--accent);
  transition: transform var(--dur) var(--ease);
}
.qa[open] summary::after { content: '−'; }
.qa p {
  color: var(--ink-muted);
  margin: var(--space-3) 0 0;
  max-width: var(--text-col);
}

/* ----- CTA ----- */
.cta {
  padding: var(--space-20) 0;
  text-align: center;
}
.cta .lede { margin: var(--space-4) auto var(--space-6); }
.cta .btn-primary { background: var(--accent); border-color: var(--accent); }
.cta .btn-primary:hover { background: var(--ink); border-color: var(--ink); }

/* ----- Footer ----- */
.footer {
  border-top: 1px solid var(--rule);
  padding: var(--space-6) 0;
  margin-top: var(--space-12);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-inner .brand {
  margin-left: 0;
  padding: 0;
}
.footer-inner .brand-logo {
  height: 56px;
  transform: none;
}