/* ===========================================================
   part3designs — Blueprint design system
   =========================================================== */

:root {
  --bg: #0a1e33;
  --bg-alt: #0f2a47;
  --line: #3e6690;
  --line-faint: rgba(62, 102, 144, 0.35);
  --ink: #eaf2fa;
  --ink-dim: #9fb8ce;
  --accent: #ff6b35;
  --accent-soft: rgba(255, 107, 53, 0.15);

  --font-mono: ui-monospace, "JetBrains Mono", "Fira Code", "SFMono-Regular",
    Menlo, Consolas, monospace;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;

  --maxw: 760px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  background-image:
    linear-gradient(var(--line-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-faint) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: -1px -1px;
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation: none !important;
    transition: none !important;
  }
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* --- corner registration marks (signature element) --- */
.crop-marks span {
  position: fixed;
  width: 18px;
  height: 18px;
  border: 1px solid var(--line);
  opacity: 0.55;
  z-index: 5;
  pointer-events: none;
}
.crop-marks .tl { top: 14px; left: 14px; border-right: none; border-bottom: none; }
.crop-marks .tr { top: 14px; right: 14px; border-left: none; border-bottom: none; }
.crop-marks .bl { bottom: 14px; left: 14px; border-right: none; border-top: none; }
.crop-marks .br { bottom: 14px; right: 14px; border-left: none; border-top: none; }

/* --- layout shell --- */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- header / nav --- */
.site-header {
  padding: 28px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  text-transform: uppercase;
}

/* --- hero --- */
.hero {
  min-height: 86vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px 0 40px;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px;
}

.dimension {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--line);
}
.dimension::before,
.dimension::after {
  content: "";
  height: 1px;
  width: 28px;
  background: var(--line);
}

.wordmark {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(2.4rem, 8vw, 5rem);
  letter-spacing: -0.02em;
  margin: 18px 0 10px;
  color: var(--ink);
}
.wordmark .three {
  color: var(--accent);
}

.hero-note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-dim);
  margin: 0 0 28px;
  letter-spacing: 0.02em;
}

.hero-copy {
  max-width: 46ch;
  font-size: 1.05rem;
  color: var(--ink-dim);
  margin: 0;
}
.hero-copy strong {
  color: var(--ink);
  font-weight: 600;
}

/* --- section label --- */
.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-faint);
}

/* --- parts list (link table) --- */
.parts-list {
  list-style: none;
  margin: 0 0 64px;
  padding: 0;
  border-top: 1px solid var(--line-faint);
}

.parts-list li {
  border-bottom: 1px solid var(--line-faint);
}

.parts-row {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 18px 4px;
  text-decoration: none;
  color: var(--ink);
  transition: background-color 0.15s ease, padding-left 0.15s ease;
}

.parts-row:hover,
.parts-row:focus-visible {
  background: var(--bg-alt);
  padding-left: 12px;
}

.pos {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-dim);
}

.part-name {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.part-name .label {
  font-size: 1rem;
  font-weight: 600;
}
.part-name .desc {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-dim);
}

.go {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  white-space: nowrap;
}

/* --- footer --- */
.site-footer {
  border-top: 1px solid var(--line-faint);
  padding: 24px 0 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-dim);
}

.site-footer nav {
  display: flex;
  gap: 20px;
}
.site-footer a {
  text-decoration: none;
  color: var(--ink-dim);
  border-bottom: 1px solid transparent;
}
.site-footer a:hover {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* --- legal pages --- */
.legal {
  padding: 80px 0 60px;
}
.legal h1 {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  margin-bottom: 6px;
}
.legal .back {
  display: inline-block;
  margin-bottom: 36px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  text-decoration: none;
}
.legal h2 {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent);
  margin: 36px 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.legal p, .legal li {
  color: var(--ink-dim);
  font-size: 0.98rem;
}
.legal .placeholder {
  color: var(--accent);
}