/* Malintent Detector — marketing site. Shared design system + responsive layout.
   Ported from the Claude Design artboards (Marketing/pages/*.dc.html): editorial
   cream/ink palette with a rust accent, Newsreader serif + IBM Plex Sans/Mono.
   Desktop matches the 1440px artboards; grids stack and type scales on smaller
   screens. */

:root {
  --bg: #f5f2ec;
  --ink: #1c1a17;
  --rust: #b3492b;
  --coral: #e07a5a;
  --muted: #4a4640;
  --muted-2: #7a756c;
  --rule: #d8d2c6;
  --panel: #ebe7df;
  --dark: #1c1a17;
  --dark-text: #efe9df;
  --dark-muted: #9a8f7c;
  --dark-rule: #3a3631;
  --maxw: 1440px;
  --pad: 64px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

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

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--rust); }

.serif { font-family: "Newsreader", Georgia, "Times New Roman", serif; }
.mono { font-family: "IBM Plex Mono", Menlo, Consolas, monospace; }

/* ---- layout ---- */

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }

.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }

.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 32px; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }

.stack { display: flex; flex-direction: column; }
.rule { height: 1px; background: var(--rule); }

/* ---- type ---- */

.eyebrow {
  font-family: "IBM Plex Mono", Menlo, monospace;
  font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted-2);
}
.h-hero { font-size: clamp(40px, 6.2vw, 76px); line-height: 1.02; font-weight: 400; letter-spacing: -0.025em; margin: 0; text-wrap: pretty; }
.h-1 { font-size: clamp(30px, 4.4vw, 44px); line-height: 1.12; font-weight: 400; letter-spacing: -0.02em; margin: 0; text-wrap: pretty; }
.h-2 { font-size: clamp(28px, 3.8vw, 40px); line-height: 1.12; font-weight: 400; letter-spacing: -0.02em; margin: 0; text-wrap: pretty; }
.lede { font-size: clamp(17px, 1.6vw, 20px); line-height: 1.5; color: var(--muted); text-wrap: pretty; }
.body { font-size: 16px; line-height: 1.6; color: var(--muted); }
.small { font-size: 15px; line-height: 1.55; color: var(--muted); }

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

.btn-primary {
  display: inline-flex; align-items: center; gap: 10px; height: 48px; padding: 0 22px;
  background: var(--ink); color: var(--dark-text); border-radius: 3px;
  font-weight: 500; font-size: 15px; letter-spacing: 0.01em;
}
.btn-primary:hover { background: var(--rust); color: var(--dark-text); }
.btn-primary svg { stroke: currentColor; }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px; height: 48px; padding: 0 4px;
  color: var(--ink); font-weight: 500; font-size: 15px; border-bottom: 1px solid var(--ink);
}
.btn-ghost:hover { color: var(--rust); border-bottom-color: var(--rust); }

/* ---- code panels ---- */

.code {
  font-family: "IBM Plex Mono", Menlo, Consolas, monospace;
  font-size: 13px; line-height: 1.6; white-space: pre; overflow-x: auto;
}
.k { color: #9a8f7c; } .s { color: #efe9df; } .n { color: #e6a26b; } .c { color: #6f6a62; } .hl { color: var(--coral); }

/* ---- nav + footer ---- */

.site-header { border-bottom: 1px solid var(--rule); }
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.nav-links { display: flex; align-items: center; gap: 36px; font-size: 15px; font-weight: 500; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .name { font-size: 21px; font-weight: 500; letter-spacing: -0.01em; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }

.footer { display: flex; justify-content: space-between; align-items: flex-start; gap: 32px; padding: 8px 0 48px; font-size: 14px; color: var(--muted-2); flex-wrap: wrap; }
.footer a { color: var(--muted-2); }
.footer a:hover { color: var(--rust); }
.footer-cols { display: flex; gap: 48px; flex-wrap: wrap; }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer-col .head { color: var(--ink); font-weight: 500; }

/* ---- dark panels (instrument card, code, CTA) ---- */
.panel-dark { background: var(--dark); color: var(--dark-text); border-radius: 6px; }

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

@media (max-width: 1024px) {
  :root { --pad: 40px; }
  .section { padding: 72px 0; }
}

@media (max-width: 820px) {
  :root { --pad: 24px; }
  .grid, .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 24px; }
  .col-4, .col-5, .col-6, .col-7, .col-8 { grid-column: auto; }
  .section { padding: 56px 0; }

  /* collapsible nav */
  .nav-links {
    position: absolute; left: 0; right: 0; top: 76px; z-index: 20;
    flex-direction: column; align-items: flex-start; gap: 20px;
    background: var(--bg); border-bottom: 1px solid var(--rule);
    padding: 24px var(--pad); display: none;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: inline-flex; }
  .nav { position: relative; }
}