/* Xtrude CAD — xtrudecad.org */

/* Self-hosted fonts (SIL OFL 1.1, see assets/fonts/OFL-*.txt), Latin subset */
@font-face {
  font-family: "Inter"; font-style: normal; font-weight: 400 800; font-display: swap;
  src: url("/assets/fonts/inter-latin.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono"; font-style: normal; font-weight: 500; font-display: swap;
  src: url("/assets/fonts/plexmono-500-latin.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono"; font-style: normal; font-weight: 600; font-display: swap;
  src: url("/assets/fonts/plexmono-600-latin.woff2") format("woff2");
}

:root {
  --accent: #E8590C;
  --accent-hover: #CC4A07;
  --accent-soft: #FFF1E8;
  --ink: #1B1F24;
  --ink-2: #4B5563;
  --ink-3: #6B7280;
  --bg: #FFFFFF;
  --bg-tint: #F7F8FA;
  --line: #E5E7EB;
  --dark: #14171B;
  --dark-2: #1B1F24;
  --dark-line: #2C323A;
  --on-dark: #E6E8EB;
  --on-dark-2: #9AA3AD;

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }
code { font-family: var(--mono); font-size: 0.9em; }
img { max-width: 100%; }

h1, h2, h3, h4 { margin: 0; line-height: 1.12; letter-spacing: -0.025em; }
h1 { font-size: clamp(2.6rem, 6.5vw, 4.4rem); font-weight: 800; letter-spacing: -0.035em; }
h2 { font-size: clamp(1.9rem, 4vw, 2.6rem); font-weight: 800; }
h3 { font-size: 1.1rem; font-weight: 600; letter-spacing: -0.01em; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: var(--accent); color: #fff; padding: 8px 14px; border-radius: 8px; }

/* Nav */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: rgba(255, 255, 255, 0.82); backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent; transition: border-color 0.2s;
}
.nav-inner { height: 64px; display: flex; align-items: center; gap: 24px; }
.brand img { display: block; height: 28px; width: auto; }
.nav-links { display: flex; gap: 28px; margin: 0 auto; font-size: 0.9rem; }
.nav-links a { color: var(--ink-2); text-decoration: none; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; gap: 10px; }

.pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 15px; border-radius: 999px; font-size: 0.875rem; font-weight: 600; text-decoration: none;
}
.pill-dark { background: var(--ink); color: #fff; }
.pill-dark:hover { background: #000; color: #fff; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
  text-decoration: none; border: 1px solid transparent; transition: background 0.15s, border-color 0.15s;
}
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 6px 20px -8px rgba(232, 89, 12, 0.6); }
.btn-accent:hover { background: var(--accent-hover); color: #fff; }
.btn-outline { background: var(--bg); color: var(--ink); border-color: var(--line); box-shadow: 0 1px 2px rgba(0,0,0,0.04); }
.btn-outline:hover { border-color: #C9CED4; color: var(--ink); }

/* Hero */
.hero {
  position: relative; padding: 148px 0 104px; overflow: hidden;
  background:
    radial-gradient(ellipse 60% 50% at 70% 0%, rgba(232, 89, 12, 0.10), transparent 70%),
    linear-gradient(to right, rgba(27, 31, 36, 0.05) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(to bottom, rgba(27, 31, 36, 0.05) 1px, transparent 1px) 0 0 / 48px 48px;
}
.hero::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 160px;
  background: linear-gradient(to bottom, transparent, var(--bg)); pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: center; }
.kicker {
  margin: 0 0 8px; font-family: var(--mono); font-weight: 600;
  font-size: clamp(1.6rem, 3.6vw, 2.4rem); letter-spacing: 0.02em; line-height: 1;
  background: linear-gradient(90deg, #E8590C, #F59F00); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { font-size: 1.15rem; color: var(--ink-2); max-width: 32em; margin: 24px 0 0; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-cta.center { justify-content: center; }
.hero-meta { margin: 20px 0 0; font-size: 0.85rem; color: var(--ink-3); }

.hero-art { margin: 0; }
.hero-art svg { display: block; width: 100%; height: auto; filter: drop-shadow(0 24px 30px rgba(27, 31, 36, 0.10)); }
.hero-art polygon { stroke: var(--ink); stroke-width: 1.4; stroke-linejoin: round; }
.f-top { fill: #EEF0F3; }
.f-right { fill: #C3C9D0; }
.f-front { fill: #D9DDE2; }
.f-pull { fill: var(--accent); }
.hole { fill: #FFFFFF; stroke: var(--ink); stroke-width: 1.4; }
.arrow { fill: none; stroke: var(--accent); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.hero-art .pull polygon { stroke: var(--ink); }
.dim rect { fill: #fff; stroke: var(--accent); stroke-width: 1.4; }
.dim text { font-family: var(--mono); font-size: 13px; font-weight: 600; fill: var(--ink); }
@media (prefers-reduced-motion: no-preference) {
  .pull { animation: pull 3.4s ease-in-out infinite; }
  @keyframes pull { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
}

/* Sections */
.section { padding: 104px 0; }
.section-tint { background: var(--bg-tint); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-head p { color: var(--ink-2); font-size: 1.05rem; margin: 16px 0 0; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.card {
  border: 1px solid var(--line); border-radius: 16px; padding: 28px;
  background: var(--bg); box-shadow: 0 1px 2px rgba(0,0,0,0.03);
}
.card-sub { margin: 6px 0 20px; color: var(--ink-3); font-size: 0.9rem; }
.card-note { margin: 18px 0 0; color: var(--ink-3); font-size: 0.85rem; }
.rows { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.rows li {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  border: 1px solid var(--line); border-radius: 10px; padding: 11px 14px; font-weight: 500; font-size: 0.95rem;
}
.rows small { color: var(--ink-3); font-size: 0.8rem; font-weight: 400; text-align: right; }
.rows-mono code { color: var(--accent); font-size: 0.88rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span {
  font-family: var(--mono); font-size: 0.82rem; font-weight: 500;
  border: 1px solid var(--line); border-radius: 6px; padding: 4px 10px; background: var(--bg-tint);
}
.todo { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.todo li { display: flex; align-items: center; gap: 10px; font-size: 0.95rem; }
.todo li::before {
  content: ""; width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid var(--accent); box-sizing: border-box; flex: none;
  background: conic-gradient(var(--accent) 0 25%, transparent 0);
}

/* Feature rows */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.feature + .feature { margin-top: 96px; }
.feature > * { min-width: 0; }
.feature-rev .feature-text { order: 2; }
.tag {
  display: inline-block; font-size: 0.7rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-soft); border-radius: 6px; padding: 4px 9px; margin-bottom: 16px;
}
.feature-text h3 { font-size: clamp(1.5rem, 2.6vw, 1.9rem); font-weight: 700; letter-spacing: -0.02em; }
.feature-text p { color: var(--ink-2); margin: 16px 0 20px; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.checks li { position: relative; padding-left: 28px; font-size: 0.95rem; }
.checks li::before {
  content: ""; position: absolute; left: 2px; top: 6px; width: 12px; height: 7px;
  border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg);
}

/* Mock UI panels */
.mock {
  border: 1px solid var(--line); border-radius: 14px; background: var(--bg); overflow: hidden;
  box-shadow: 0 30px 60px -30px rgba(27, 31, 36, 0.25), 0 1px 2px rgba(0,0,0,0.04);
}
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 11px 14px; border-bottom: 1px solid var(--line); background: var(--bg-tint); }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: #D5D9DE; }
.mock-bar span { margin-left: 8px; font-size: 0.78rem; color: var(--ink-3); font-weight: 500; }

.mock-value .mock-body {
  position: relative; height: 230px;
  background:
    linear-gradient(to right, rgba(27,31,36,0.06) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(to bottom, rgba(27,31,36,0.06) 1px, transparent 1px) 0 0 / 24px 24px;
}
.snap {
  position: absolute; left: calc(49% + 12px); top: 14%; display: flex; align-items: center; gap: 8px;
  font-size: 0.78rem; font-weight: 500; background: var(--ink); color: #fff; padding: 3px 9px 3px 5px; border-radius: 6px;
}
.snap b { width: 10px; height: 10px; background: #2F9E44; border: 1.5px solid #fff; border-radius: 2px; }
.value-box {
  position: absolute; right: 16px; bottom: 16px; display: flex; align-items: stretch;
  border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--bg); font-size: 0.85rem;
}
.value-box label { padding: 8px 12px; background: var(--bg-tint); color: var(--ink-3); border-right: 1px solid var(--line); }
.value-box output { padding: 8px 14px; font-family: var(--mono); font-weight: 600; min-width: 120px; }
.caret { display: inline-block; width: 1.5px; height: 1em; background: var(--accent); margin-left: 2px; vertical-align: -2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.mock-info dl { margin: 0; padding: 20px 24px; display: grid; grid-template-columns: auto 1fr; gap: 12px 24px; font-size: 0.92rem; }
.mock-info dt { color: var(--ink-3); }
.mock-info dd { margin: 0; font-weight: 500; }
.mock-info dd:nth-of-type(2), .mock-info dd:nth-of-type(3) { font-family: var(--mono); font-size: 0.86rem; }
.mock-info .ok { color: #2F9E44; }

.mock-term { background: var(--dark); border-color: var(--dark-line); }
.mock-term .mock-bar { background: var(--dark-2); border-color: var(--dark-line); }
.mock-term .mock-bar i { background: #3A4149; }
.mock-term .mock-bar span { color: var(--on-dark-2); }
.mock-term pre { margin: 0; padding: 20px 22px; color: var(--on-dark); font: 500 0.86rem/1.8 var(--mono); overflow-x: auto; }
.mock-term .p { color: var(--accent); }
.mock-term .d { color: var(--on-dark-2); }

/* Dark section */
.section-dark { background: var(--dark); color: var(--on-dark); }
.section-dark .section-head p { color: var(--on-dark-2); }
.arch { max-width: 900px; margin: 0 auto; padding: 32px; border: 1px solid var(--dark-line); border-radius: 18px; background: var(--dark-2); }
.arch-row { display: grid; }
.arch-3 { grid-template-columns: repeat(3, 1fr); gap: 16px; }
.arch-link { width: 2px; height: 28px; margin: 0 auto; background: linear-gradient(var(--dark-line), var(--accent)); }
.node {
  border: 1px solid var(--dark-line); border-radius: 12px; background: var(--dark); padding: 16px 18px;
  display: flex; flex-direction: column; gap: 4px; text-align: center;
}
.node code { font-size: 0.95rem; font-weight: 600; color: var(--on-dark); }
.node small { color: var(--on-dark-2); font-size: 0.8rem; }
.node-accent { border-color: rgba(232, 89, 12, 0.6); box-shadow: 0 0 0 4px rgba(232, 89, 12, 0.08); }
.node-accent code, .node-core code { color: var(--accent); }
.node-core { border-color: rgba(232, 89, 12, 0.35); }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 20px 4px; font-weight: 600; font-size: 1.02rem;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.4rem; font-weight: 400; color: var(--ink-3); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 4px 22px; color: var(--ink-2); }

/* Get */
.section-get { background: radial-gradient(ellipse 50% 60% at 50% 100%, rgba(232, 89, 12, 0.10), transparent 70%), var(--bg-tint); }
.get { text-align: center; }
.get img { display: block; margin: 0 auto 24px; border-radius: 16px; box-shadow: 0 12px 30px -10px rgba(232, 89, 12, 0.5); }
.get p { color: var(--ink-2); font-size: 1.05rem; margin: 14px 0 0; }

/* Contact */
.contact .rows li { flex-wrap: wrap; }
.contact .rows a { text-decoration: none; }
.contact .rows small a { color: inherit; text-decoration: underline; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 56px 0 32px; font-size: 0.9rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer-brand img { display: block; height: 24px; width: auto; }
.footer-brand p { color: var(--ink-3); margin: 12px 0 0; }
.footer-cols { display: flex; gap: 64px; }
.footer-cols div { display: flex; flex-direction: column; gap: 8px; }
.footer-cols h4 { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-3); margin-bottom: 4px; }
.footer-cols a { color: var(--ink-2); text-decoration: none; }
.footer-cols a:hover { color: var(--accent); }
.footer-legal { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }
.footer-legal p { margin: 0; color: var(--ink-3); font-size: 0.8rem; }

/* Responsive */
@media (max-width: 900px) {
  .hero { padding: 120px 0 72px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { max-width: 420px; }
  .feature { grid-template-columns: 1fr; gap: 36px; }
  .feature-rev .feature-text { order: 0; }
  .feature + .feature { margin-top: 72px; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-cta { margin-left: auto; }
  .section { padding: 72px 0; }
  .section-head { margin-bottom: 40px; }
  .cards { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .rows small { display: none; }
  .contact .rows small { display: block; flex-basis: 100%; text-align: left; }
  .arch { padding: 16px; }
  .arch-3 { grid-template-columns: 1fr; gap: 10px; }
  .footer-cols { gap: 40px; }
}

/* Push/pull drawing inside the value-box mock */
.drawing { position: absolute; inset: 0; width: 100%; height: 100%; }
.sk-face { fill: rgba(27, 31, 36, 0.06); stroke: var(--ink-3); stroke-width: 1.2; stroke-dasharray: 4 4; }
.sk-top { fill: rgba(232, 89, 12, 0.18); stroke: var(--accent); stroke-width: 1.6; }
.sk-edge { stroke: var(--accent); stroke-width: 1.6; }
.sk-infer { stroke: #1971C2; stroke-width: 1.2; stroke-dasharray: 2 4; }
.sk-pt { fill: #2F9E44; stroke: #fff; stroke-width: 1.5; }

/* Why */
.why { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.why-item { border-top: 2px solid var(--accent); padding-top: 20px; }
.why-n { display: block; font-family: var(--mono); font-weight: 600; font-size: 0.85rem; color: var(--accent); margin-bottom: 10px; }
.why-item p { color: var(--ink-2); font-size: 0.95rem; margin: 10px 0 0; }
@media (max-width: 900px) { .why { grid-template-columns: repeat(2, 1fr); gap: 32px 24px; } }
@media (max-width: 560px) { .why { grid-template-columns: 1fr; } }

/* Positioning: is / is not */
.accent { color: var(--accent); }
.lede-not { margin-top: 12px; font-size: 1rem; color: var(--ink-3); }
.versus h3 { margin-bottom: 18px; }
.card-is { border-color: var(--accent); box-shadow: 0 10px 30px -18px rgba(232, 89, 12, 0.5); }
.crosses { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.crosses li { position: relative; padding-left: 28px; font-size: 0.95rem; color: var(--ink-2); }
.crosses li::before, .crosses li::after {
  content: ""; position: absolute; left: 3px; top: 12px; width: 12px; height: 2px; background: var(--ink-3);
}
.crosses li::before { transform: rotate(45deg); }
.crosses li::after { transform: rotate(-45deg); }
.versus-note { text-align: center; margin: 32px auto 0; max-width: 640px; color: var(--ink-3); font-size: 0.95rem; }

/* Screenshots */
.shot { margin: 0; }
.shot img {
  display: block; width: 100%; height: auto; border: 1px solid var(--dark-line); border-radius: 12px;
  box-shadow: 0 30px 60px -30px rgba(27, 31, 36, 0.35), 0 1px 2px rgba(0,0,0,0.04);
}
.shot figcaption { margin-top: 14px; text-align: center; color: var(--ink-3); font-size: 0.9rem; }
.shot-band { position: relative; z-index: 1; margin-top: -48px; padding-bottom: 104px; }
.shot-hero { max-width: 1000px; margin: 0 auto; }
@media (max-width: 720px) { .shot-band { margin-top: -24px; padding-bottom: 72px; } }