/* MORFE.jl site — shared styles */

:root {
  --bg: #0a0a0f;
  --bg-2: #0e0e15;
  --bg-3: #14141d;
  --ink: #e8e8ee;
  --ink-2: #b8b8c4;
  --ink-3: #6e6e7e;
  --hair: #1f1f2c;
  --hair-2: #2a2a3a;
  --jl-red: #cb3c33;
  --jl-purple: #9558b2;
  --jl-green: #389826;
  --jl-blue: #4063d8;
  --accent: var(--jl-purple);

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, sans-serif;

  --maxw: 1280px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
}

/* The nav is sticky at top:0, so the browser's own anchor jump parks it over
   whatever was scrolled to: every in-page link lands a nav-height too far down.
   nav.js measures the rendered nav into --nav-h (it wraps on narrow screens, so
   53px is only the fallback); the extra allowance is breathing room above the
   heading, not chrome. documentation.html overrides this to also clear its sticky module
   heading, which is a second bar this rule knows nothing about. */
html { scroll-padding-top: calc(var(--nav-h, 53px) + 18px); }

a { color: inherit; text-decoration: none; }
a:hover { color: #fff; }

code, pre, .mono { font-family: var(--mono); }
.mono { font-family: var(--mono); letter-spacing: 0.01em; }

h1, h2, h3, h4 {
  font-family: var(--sans);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
}

h1 { font-size: clamp(48px, 7vw, 104px); font-weight: 400; }
h2 { font-size: clamp(28px, 3.4vw, 44px); }
h3 { font-size: 22px; font-weight: 500; }

p { margin: 0 0 1em 0; color: var(--ink-2); }

hr { border: 0; border-top: 1px solid var(--hair); margin: 0; }

/* ===== Manifold backdrop ===== */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.backdrop canvas { width: 100%; height: 100%; display: block; }
.backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 20%, transparent 0%, rgba(10,10,15,0.55) 65%, rgba(10,10,15,0.95) 100%);
  pointer-events: none;
}

/* ===== Layout helpers ===== */
.site { position: relative; z-index: 1; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.wrap-tight { max-width: 980px; margin: 0 auto; padding: 0 32px; }

/* ===== Top nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: rgba(10, 10, 15, 0.68);
  border-bottom: 1px solid var(--hair);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: #fff;
  padding: 6px 10px;
  border-radius: 4px;
  transition: background .15s;
}
.nav-logo:hover { background: rgba(149,88,178,0.12); }
.nav-logo .dot { width: 10px; height: 10px; border-radius: 2px; background: var(--jl-purple); }
.nav-links {
  display: flex;
  gap: 4px;
  font-family: var(--mono);
  font-size: 13px;
}
.nav-links a {
  padding: 6px 12px;
  color: var(--ink-2);
  border-radius: 4px;
}
.nav-links a:hover { color: #fff; background: var(--bg-3); }
.nav-links a.active { color: #fff; }
.nav-cta {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 13px;
  padding: 7px 14px;
  border: 1px solid var(--hair-2);
  border-radius: 4px;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: border-color .15s, background .15s;
}
.nav-cta:hover { border-color: var(--jl-purple); background: rgba(149,88,178,0.08); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 14px;
  padding: 12px 18px;
  border-radius: 4px;
  border: 1px solid var(--hair-2);
  color: #fff;
  background: transparent;
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .15s;
}
.btn:hover { border-color: var(--ink-2); background: rgba(255,255,255,0.03); }
.btn-primary {
  background: var(--jl-purple);
  border-color: var(--jl-purple);
}
.btn-primary:hover { background: #a566c2; border-color: #a566c2; }
.btn .arrow { display: inline-block; transition: transform .15s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ===== Section headers ===== */
.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--ink-3);
}

/* ===== Cards ===== */
.card {
  background: rgba(14,14,21,0.55);
  border: 1px solid var(--hair);
  border-radius: 6px;
  padding: 28px;
  transition: border-color .2s, background .2s;
}
.card:hover { border-color: var(--hair-2); background: rgba(20,20,29,0.7); }

/* ===== Code block ===== */
.code {
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.65;
  background: #07070b;
  border: 1px solid var(--hair);
  border-radius: 6px;
  padding: 18px 20px;
  overflow-x: auto;
  color: #d6d6df;
}
.code .kw { color: #c890e6; }
.code .fn { color: #7aa2ff; }
.code .num { color: var(--jl-purple); }
.code .str { color: #98c379; }
.code .cm { color: #5a5a6a; font-style: italic; }
.code .var { color: #e8e8ee; }
.code .op { color: #b8b8c4; }
.code-prompt { color: var(--jl-green); user-select: none; }

/* ===== Footer ===== */
.foot {
  border-top: 1px solid var(--hair);
  padding: 48px 0 64px;
  margin-top: 120px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-3);
}
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.foot h4 { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 14px; font-weight: 500; }
.foot ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.foot a { color: var(--ink-2); }
.foot a:hover { color: #fff; }
.foot .nav-logo { width: fit-content; }
/* Tutorial pages already end with a full-height documentation shell. Their
   shared footer should meet that shell directly, without the global 120px gap. */
.docs-page #site-footer[data-base="../"] { margin-top: 0; }
.foot-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--hair);
  color: var(--ink-3);
  font-size: 12px;
}

@media (max-width: 800px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .foot-grid { grid-template-columns: 1fr; }
  .foot-meta { align-items: flex-start; flex-direction: column; }
}

/* ===== Misc ===== */
.hairline { height: 1px; background: var(--hair); width: 100%; }
.dot-sep { display: inline-block; width: 4px; height: 4px; background: var(--ink-3); border-radius: 50%; vertical-align: middle; margin: 0 10px; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding: 4px 8px;
  border: 1px solid var(--hair-2);
  border-radius: 3px;
}
.tag .tag-dot { width: 6px; height: 6px; border-radius: 50%; }

/* selection */
::selection { background: rgba(149,88,178,0.4); color: #fff; }

/* scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #25253a; border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: #353553; }