/* Calcine site. Colors follow the app's "Ember" tokens (src/styles/globals.css). */

@font-face {
  font-family: "Geist";
  src: url("fonts/geist.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Geist Mono";
  src: url("fonts/geist-mono.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --bg: #0c0c10;
  --fg: #ececf1;
  --card: #141419;
  --card-2: #1c1c23;
  --muted: #9898a6;
  --border: #2a2a33;
  --primary: #ff6b3d;
  --primary-fg: #1a0b05;
  --amber: #ffb547;
  --npu: #ff6b3d;
  --gpu: #a78bfa;
  --cpu: #2dd4bf;
  --success: #34d399;
  --glow: rgba(255, 107, 61, 0.22);
  --shot-shadow: 0 40px 120px -30px rgba(255, 107, 61, 0.28), 0 24px 60px -20px rgba(0, 0, 0, 0.7);
  --code-k: #ff8a5c;
  --code-s: #ffd08a;
  --code-c: #6e6e7c;
  --code-f: #7b8cff;
  --code-n: #2dd4bf;
  --radius: 14px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafaf7;
    --fg: #18181b;
    --card: #ffffff;
    --card-2: #f4f4f0;
    --muted: #66666f;
    --border: #e7e5e0;
    --primary: #c2410c;
    --primary-fg: #ffffff;
    --amber: #b45309;
    --npu: #e8501f;
    --gpu: #7c3aed;
    --cpu: #0d9488;
    --success: #047857;
    --glow: rgba(232, 80, 31, 0.14);
    --shot-shadow:
      0 40px 100px -30px rgba(194, 65, 12, 0.25), 0 20px 50px -20px rgba(24, 24, 27, 0.25);
    --code-k: #c2410c;
    --code-s: #a16207;
    --code-c: #8a8a94;
    --code-f: #4f5bd5;
    --code-n: #0d9488;
    color-scheme: light;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
}

code,
pre {
  font-family: "Geist Mono", ui-monospace, "Cascadia Code", monospace;
}

:not(pre) > code {
  font-size: 0.88em;
  padding: 0.1em 0.4em;
  border-radius: 6px;
  background: var(--card-2);
  border: 1px solid var(--border);
}

.icon {
  width: 1.1em;
  height: 1.1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

.container {
  width: min(1180px, 100% - 32px);
  margin-inline: auto;
}

/* Visible to screen readers only. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Navigation */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  font-size: 18px;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 4px;
  margin-left: 12px;
}

.nav-links a {
  padding: 6px 12px;
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  transition:
    color 0.15s,
    background 0.15s;
}

.nav-links a:hover {
  color: var(--fg);
  background: var(--card-2);
}

.nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-link {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  color: var(--muted);
  transition:
    color 0.15s,
    background 0.15s;
}

.icon-link:hover {
  color: var(--fg);
  background: var(--card-2);
}

.icon-link .icon {
  width: 20px;
  height: 20px;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    transform 0.15s,
    box-shadow 0.2s,
    background 0.15s,
    border-color 0.15s;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 14px;
}

.btn-lg {
  padding: 13px 22px;
  font-size: 16px;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-fg);
  box-shadow:
    0 8px 30px -8px var(--glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  box-shadow:
    0 12px 40px -8px var(--glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-ghost {
  background: var(--card);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: color-mix(in srgb, var(--fg) 25%, var(--border));
}

/* Hero */

.hero {
  position: relative;
  padding: 96px 0 40px;
  isolation: isolate;
}

.glow {
  position: absolute;
  inset: -120px 0 auto;
  height: 900px;
  z-index: -1;
  background:
    radial-gradient(720px 440px at 50% 32%, var(--glow), transparent 70%),
    radial-gradient(
      420px 300px at 68% 55%,
      color-mix(in srgb, var(--amber) 14%, transparent),
      transparent 70%
    );
  pointer-events: none;
}

.glow::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--border) 50%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--border) 50%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(760px 460px at 50% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(760px 460px at 50% 30%, #000 20%, transparent 75%);
  opacity: 0.6;
}

.hero-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 28px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 80%, transparent);
  color: var(--muted);
  font-size: 14px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 20%, transparent);
}

h1 {
  margin: 0;
  font-size: clamp(40px, 7vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 700;
}

.ember {
  background: linear-gradient(120deg, var(--primary) 10%, var(--amber) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  max-width: 680px;
  margin: 26px auto 0;
  font-size: clamp(17px, 2vw, 20px);
  color: var(--muted);
}

.cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 36px;
}

.fine {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.shot-wrap {
  margin-top: 64px;
}

.shot {
  border-radius: var(--radius);
  box-shadow: var(--shot-shadow);
}

.hero-shot {
  width: 100%;
}

/* Compute units */

.units {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 56px;
}

.unit {
  position: relative;
  padding: 20px 22px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.unit::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: var(--c);
}

.unit.npu {
  --c: var(--npu);
}
.unit.gpu {
  --c: var(--gpu);
}
.unit.cpu {
  --c: var(--cpu);
}

.unit-name {
  font-weight: 650;
  color: var(--c);
}

.unit-desc {
  color: var(--muted);
  font-size: 15px;
}

/* Sections */

.section {
  padding-top: 120px;
}

.section-head {
  max-width: 760px;
  margin: 0 auto 48px;
  text-align: center;
}

.kicker {
  margin: 0 0 10px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 4.2vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 700;
}

h3 {
  margin: 0;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.sub {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card {
  padding: 26px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border);
  transition:
    border-color 0.2s,
    transform 0.2s;
}

.card:hover {
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
  transform: translateY(-2px);
}

.card p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.card-icon {
  width: 40px;
  height: 40px;
  padding: 9px;
  margin-bottom: 18px;
  border-radius: 10px;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  stroke-width: 1.8;
}

/* Feature rows */

.showcase {
  display: flex;
  flex-direction: column;
  gap: 120px;
}

.row {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 56px;
  align-items: center;
}

.row.reverse .row-text {
  order: 2;
}

.row > img {
  justify-self: center;
  max-height: 560px;
  width: auto;
}

.row h2,
.api h2 {
  font-size: clamp(28px, 3.4vw, 38px);
}

.checks {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  gap: 10px;
}

.checks li {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.checks .icon {
  color: var(--success);
  transform: translateY(3px);
}

/* API */

.api {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 56px;
  align-items: center;
}

.code-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  overflow: hidden;
  box-shadow: 0 30px 80px -40px rgba(0, 0, 0, 0.6);
}

.tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 10px 0;
  border-bottom: 1px solid var(--border);
  background: var(--card-2);
}

.tabs button {
  font: inherit;
  font-size: 14px;
  color: var(--muted);
  background: none;
  border: 0;
  padding: 8px 14px 10px;
  border-bottom: 2px solid transparent;
  cursor: pointer;
}

.tabs button[aria-selected="true"] {
  color: var(--fg);
  border-bottom-color: var(--primary);
}

.tabs .copy {
  margin-left: auto;
  display: grid;
  place-items: center;
  padding: 6px 10px 10px;
}

.tabs .copy.done {
  color: var(--success);
}

pre {
  margin: 0;
  padding: 22px 24px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
}

.k {
  color: var(--code-k);
}
.s {
  color: var(--code-s);
}
.c {
  color: var(--code-c);
  font-style: italic;
}
.f {
  color: var(--code-f);
}
.n {
  color: var(--code-n);
}

.api-shot {
  margin-top: 72px;
}

/* Security */

.layers {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.layers li {
  display: flex;
  gap: 16px;
  padding: 22px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border);
}

.layers p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.layer-n {
  flex: none;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  font-family: "Geist Mono", monospace;
  font-weight: 600;
  font-size: 14px;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  /* The hexagon from the logo. */
  clip-path: polygon(50% 0, 93% 25%, 93% 75%, 50% 100%, 7% 75%, 7% 25%);
}

.more {
  margin: 32px 0 0;
  text-align: center;
  color: var(--muted);
}

.more a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  margin-left: 6px;
}

.more a:hover {
  text-decoration: underline;
}

/* Download */

.download {
  position: relative;
  text-align: center;
  padding: 72px 32px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: radial-gradient(60% 80% at 50% 0%, var(--glow), transparent 70%), var(--card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.download > img {
  margin-bottom: 24px;
  filter: drop-shadow(0 12px 30px var(--glow));
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 36px 0 8px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  text-align: left;
  max-width: 920px;
}

.steps li {
  counter-increment: step;
  padding: 20px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--bg) 60%, transparent);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 15px;
}

.steps li::before {
  content: counter(step);
  display: block;
  margin-bottom: 8px;
  font-family: "Geist Mono", monospace;
  font-weight: 600;
  color: var(--primary);
}

.steps strong {
  color: var(--fg);
}

.download .fine {
  max-width: 560px;
}

/* FAQ */

.faq {
  max-width: 820px;
}

.faq h2 {
  text-align: center;
  margin-bottom: 36px;
}

details {
  border-bottom: 1px solid var(--border);
}

summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 4px;
  font-weight: 600;
  font-size: 17px;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  font-family: "Geist Mono", monospace;
  font-size: 22px;
  font-weight: 400;
  color: var(--muted);
  transition: transform 0.2s;
}

details[open] summary::after {
  transform: rotate(45deg);
}

.faq p {
  margin: 0 4px 22px;
  color: var(--muted);
}

/* Footer */

.footer {
  margin-top: 120px;
  border-top: 1px solid var(--border);
  padding: 32px 0 48px;
  color: var(--muted);
  font-size: 14px;
}

.footer-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px 32px;
}

.footer .brand {
  color: var(--fg);
  font-size: 16px;
}

.footer p {
  margin: 0;
}

.footer nav {
  margin-left: auto;
  display: flex;
  gap: 20px;
}

.footer nav a {
  text-decoration: none;
}

.footer nav a:hover {
  color: var(--fg);
}

/* Reveal on scroll (only when JavaScript runs). */

.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}

.js .reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn,
  .card {
    transition: none;
  }
}

/* Responsive */

@media (max-width: 960px) {
  .grid,
  .layers {
    grid-template-columns: repeat(2, 1fr);
  }
  .row,
  .api {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .row.reverse .row-text {
    order: 0;
  }
  .showcase {
    gap: 96px;
  }
}

@media (max-width: 720px) {
  .nav-links {
    display: none;
  }
  .hero {
    padding-top: 64px;
  }
  .units,
  .grid,
  .layers,
  .steps {
    grid-template-columns: 1fr;
  }
  .section {
    padding-top: 88px;
  }
  .download {
    padding: 48px 20px;
  }
  .cta .btn {
    width: 100%;
  }
  .footer nav {
    margin-left: 0;
  }
  pre {
    font-size: 13px;
    padding: 18px;
  }
}