/* Homepage. Everything resolves to tokens.css, so the page is the product's
   own design system rendering itself — and it themes light/dark for free. */

/* --------------------------------------------------------- navigation --- */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding: 18px var(--space-6);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  animation: navshade linear both;
  animation-timeline: scroll();
  animation-range: 0 200px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: var(--weight-bold);
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--color-ink);
}

/* Inline SVG rather than a background or <img>, so `fill: currentColor`
   picks up the brand's own colour and flips with the theme. Sized in `em`
   so the mark tracks whatever font-size the surrounding lockup uses. */
.brand__mark {
  height: 1.15em;
  width: auto;
  flex: none;
  fill: currentColor;
}

.brand:hover {
  color: var(--color-ink);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 15px;
}

/* :not(.btn) so these never out-specify the button colours below */
.nav-links a:not(.btn) {
  color: var(--color-muted);
}

.nav-links a:not(.btn):hover {
  color: var(--color-ink);
}

/* ------------------------------------------------------------ buttons --- */

.btn {
  display: inline-block;
  border: 1px solid transparent;
  border-radius: var(--radius-none);
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  white-space: nowrap;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 10px 20px;
  font-size: var(--text-sm);
}

.btn-primary:hover {
  background: var(--color-ink);
  color: var(--color-bg);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
}

.btn-outline {
  border-color: var(--color-border-strong);
  color: var(--color-ink);
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-text);
}

/* --------------------------------------------------------------- hero --- */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 140px var(--space-6) 0;
  position: relative;
  overflow: hidden;
}

/* Dotted field, faded out with a radial mask */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, var(--color-border-strong) 1px, transparent 0);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 20%, black, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 70% 20%, black, transparent 70%);
  pointer-events: none;
}

.hero-lede {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-7);
  flex-wrap: wrap;
  margin-bottom: 56px;
  position: relative;
}

.hero-lede p {
  max-width: 400px;
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-muted);
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
}

.wordmark {
  margin: 0 -8px -0.11em;
  font-size: var(--text-hero);
  line-height: 0.82;
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-display);
  text-transform: uppercase;
  position: relative;
  background-image: linear-gradient(115deg,
      var(--color-ink) 0%, var(--color-ink) 38%,
      var(--color-primary) 50%,
      var(--color-ink) 62%, var(--color-ink) 100%);
  background-attachment: fixed;
  background-size: 100vw 200vh;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ------------------------------------------------------------ marquee --- */

.marquee {
  overflow: hidden;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 18px 0;
}

.marquee-track {
  display: flex;
  gap: var(--space-4);
  width: max-content;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-muted);
  animation: marquee 46s linear infinite;
}

.marquee:hover .marquee-track {
  animation-play-state: paused;
}

.marquee-track span {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-4);
  white-space: nowrap;
}

.marquee-track i {
  width: 12px;
  height: 12px;
  display: inline-block;
  background: var(--swatch, var(--color-muted));
}

/* ---------------------------------------------------------- sections --- */

.section {
  padding: var(--space-10) var(--space-6) var(--space-8);
}

.eyebrow {
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-primary-text);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
}

.section h2 {
  margin: 0 0 var(--space-8);
  font-size: var(--text-display);
  line-height: var(--leading-tight);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-display);
  max-width: 14ch;
}

/* ------------------------------------------------------- editor mock --- */

.editor-mock {
  max-width: 1200px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.mock-chrome {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.mock-chrome i {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--color-border-strong);
}

.mock-chrome span {
  margin-left: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.mock-body {
  display: grid;
  grid-template-columns: 200px 1fr 340px;
  min-height: 460px;
}

.mock-groups {
  border-right: 1px solid var(--color-border);
  padding: 20px 0;
  font-size: var(--text-sm);
}

.mock-groups div {
  padding: 9px 20px;
  color: var(--color-muted);
  border-left: 2px solid transparent;
}

.mock-groups div.active {
  color: var(--color-on-primary);
  background: var(--color-primary);
  border-left-color: var(--color-primary);
}

.mock-tokens {
  padding: 20px var(--space-5);
  border-right: 1px solid var(--color-border);
}

.mock-tokens div {
  display: grid;
  grid-template-columns: 20px 1fr 110px;
  gap: 14px;
  align-items: center;
  padding: 11px var(--space-2);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 13px;
}

.mock-tokens i {
  width: 18px;
  height: 18px;
  border: 1px solid var(--color-border-strong);
  background: var(--swatch);
}

.mock-tokens b {
  color: var(--color-ink);
  font-weight: var(--weight-regular);
  white-space: nowrap;
}

.mock-tokens em {
  color: var(--color-muted);
  font-style: normal;
}

.mock-css {
  padding: 20px var(--space-5);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  background: var(--color-surface-sunken);
  color: var(--color-muted);
}

.mock-label {
  margin: 0 0 var(--space-3);
  color: var(--color-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.mock-css .indent {
  padding-left: var(--space-4);
}

.mock-css .prop {
  color: var(--color-primary-text);
}

.mock-css .val {
  color: var(--color-ink);
}

.mock-copy {
  margin-top: 20px;
  display: inline-block;
  border: 1px solid var(--color-border-strong);
  padding: 6px 14px;
  color: var(--color-ink);
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.mock-copy:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-text);
}

/* ------------------------------------------------- giant word + pillars --- */

.wordmark-section {
  padding: 120px 0 var(--space-7);
  overflow: hidden;
}

.wordmark-giant {
  margin: 0;
  font-size: clamp(90px, 20vw, 380px);
  line-height: 0.8;
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  text-align: center;
  white-space: nowrap;
  background-image: linear-gradient(160deg,
      var(--color-primary) 0%, var(--color-primary-strong) 30%,
      var(--color-ink) 55%, var(--color-primary) 80%);
  background-attachment: fixed;
  background-size: 100vw 260vh;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  mask-image: linear-gradient(to bottom, black 55%, rgba(0, 0, 0, 0.15));
  -webkit-mask-image: linear-gradient(to bottom, black 55%, rgba(0, 0, 0, 0.15));
  animation: tighten linear both;
  animation-timeline: view();
  animation-range: entry 0% cover 45%;
}

.pillars {
  padding: var(--space-8) var(--space-6) var(--space-10);
  max-width: 1280px;
  margin: 0 auto;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.pillars-grid article {
  background: var(--color-bg);
  padding: var(--space-7) 36px 56px;
}

.pillars-grid p.num {
  margin: 0 0 var(--space-7);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-primary-text);
}

.pillars-grid h3 {
  margin: 0 0 var(--space-4);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
}

.pillars-grid p.body {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-muted);
}

/* ------------------------------------------------------------- mcp --- */

.mcp {
  padding: 0 var(--space-6) var(--space-10);
  max-width: 1280px;
  margin: 0 auto;
}

.mcp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 72px;
  align-items: center;
}

.mcp h2 {
  margin: 0 0 var(--space-5);
  font-size: clamp(40px, 4.5vw, 72px);
  line-height: var(--leading-tight);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-display);
  max-width: none;
}

.mcp-lede {
  margin: 0 0 var(--space-6);
  font-size: 18px;
  line-height: var(--leading-body);
  color: var(--color-muted);
  max-width: 44ch;
}

.mcp-tools {
  display: flex;
  gap: var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.code-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 28px var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 2;
  color: var(--color-muted);
  overflow-x: auto;
}

.code-card .key {
  color: var(--color-primary-text);
}

.code-card .val {
  color: var(--color-ink);
}

.code-card .i1 { padding-left: 18px; }
.code-card .i2 { padding-left: 36px; }
.code-card .i3 { padding-left: 54px; }

/* --------------------------------------------------------- closing cta --- */

.cta {
  padding: var(--space-10) var(--space-6);
  border-top: 1px solid var(--color-border);
  text-align: center;
  overflow: hidden;
}

.cta p {
  margin: 0 0 var(--space-2);
  font-size: 18px;
  color: var(--color-muted);
}

.cta-word {
  display: block;
  margin: 0 -8px;
  font-size: clamp(70px, 13vw, 240px);
  line-height: 0.9;
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-display);
  text-transform: uppercase;
  background-image: linear-gradient(115deg,
      var(--color-primary), var(--color-ink) 45%, var(--color-primary) 75%);
  background-attachment: fixed;
  background-size: 100vw 200vh;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: tighten linear both;
  animation-timeline: view();
  animation-range: entry 0% cover 60%;
}

.cta-word:hover {
  color: transparent;
}

/* ------------------------------------------------------------- footer --- */

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
  padding: var(--space-6) var(--space-6);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.site-footer .brand-mark {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-footer .brand-mark::before {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--color-primary);
}

.site-footer nav {
  display: flex;
  gap: var(--space-5);
}

.site-footer a {
  color: var(--color-muted);
}

.site-footer a:hover {
  color: var(--color-ink);
}

/* -------------------------------------------------------------- motion --- */

/* Scroll-driven where supported. Without support these resolve to a 0s
   animation with `both` fill, so content simply renders in its final state. */
.rise {
  animation: rise linear both;
  animation-timeline: view();
  animation-range: entry 0% cover 32%;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(48px); }
  to   { opacity: 1; transform: none; }
}

@keyframes tighten {
  from { letter-spacing: 0.12em; opacity: 0.2; }
  to   { letter-spacing: -0.02em; opacity: 1; }
}

@keyframes navshade {
  from { background: transparent; border-bottom-color: transparent; }
  to   { background: color-mix(in srgb, var(--color-bg) 85%, transparent);
         border-bottom-color: var(--color-border); }
}

/* Track holds two identical copies of the chip list, so -50% loops seamlessly */
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------------------------------------------------------- responsive --- */

@media (max-width: 900px) {
  .mock-body {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .mock-groups {
    display: flex;
    overflow-x: auto;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-2);
  }

  .mock-groups div {
    border-left: none;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
  }

  .mock-groups div.active {
    border-left-color: transparent;
  }

  .mock-tokens {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  .mcp-grid {
    gap: var(--space-7);
  }

  .section,
  .pillars,
  .mcp,
  .cta {
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }
}

@media (max-width: 620px) {
  .site-nav {
    padding: var(--space-3) var(--space-5);
  }

  .nav-links {
    gap: var(--space-4);
    font-size: var(--text-sm);
  }

  .hero {
    padding-top: 120px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    text-align: center;
  }
}