/* Karashi Tech — Material 3 dark theme (dark-only), mustard seed. */
/* Self-hosted Roboto (latin); system stack fallback keeps pages legible offline. */
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/roboto-400-latin.woff2') format('woff2');
}
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/fonts/roboto-500-latin.woff2') format('woff2');
}
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/fonts/roboto-700-latin.woff2') format('woff2');
}

:root {
  color-scheme: dark;

  /* M3 color roles — mustard seed on warm dark.
     Verified pairs: body 14.55:1, muted 10.3:1, primary 11.17:1,
     button ink 9.67:1, container pair 8.59:1, error 11.03:1. */
  --md-primary: #f0c24b;
  --md-on-primary: #2a1f00;
  --md-primary-container: #4a3a00;
  --md-on-primary-container: #ffe08a;
  --md-info: #a8c7fa; /* reserved for focus/info accents only, 10.89:1 */
  --md-surface: #14120c;
  --md-surface-lowest: #0e0d08;
  --md-surface-low: #1c1912;
  --md-surface-container: #211d15;
  --md-surface-high: #2b261c;
  --md-surface-highest: #362f23;
  --md-on-surface: #eae2d3;
  --md-on-surface-variant: #c9bfae;
  --md-outline: #948a78;
  --md-outline-variant: #4a4438;
  --md-error: #ffb4ab;
  --md-placeholder: #b3a78f;

  /* M3 shape scale */
  --shape-s: 8px;
  --shape-m: 12px;
  --shape-l: 16px;
  --shape-xl: 28px;
  --shape-full: 999px;

  /* M3 elevation (static — no scroll-driven shadows) */
  --elev-1: 0 1px 2px rgba(0, 0, 0, .5), 0 1px 3px rgba(0, 0, 0, .35);
  --elev-2: 0 2px 6px rgba(0, 0, 0, .5), 0 1px 2px rgba(0, 0, 0, .4);

  --max: 1080px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 16px/1.6 Roboto, system-ui, -apple-system, "Segoe UI", sans-serif;
  letter-spacing: .01em;
  background: var(--md-surface);
  color: var(--md-on-surface);
}
::selection { background: var(--md-primary); color: var(--md-on-primary); }
.container { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: 720px; }

/* High-visibility keyboard focus: 3px mustard ring + 2px offset gap.
   The offset gap shows the dark page behind, so the ring reads clearly
   on dark surfaces AND on mustard fills (never hue-only). */
:focus-visible {
  outline: 3px solid var(--md-primary);
  outline-offset: 2px;
}

/* Top app bar: M3 surface with static elevation. */
.site-header {
  position: sticky; top: 0;
  background: rgba(20, 18, 12, .94);
  backdrop-filter: blur(8px);
  box-shadow: var(--elev-1);
  z-index: 10;
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: var(--md-on-surface); text-decoration: none; font-size: 18px; letter-spacing: .01em; }
.brand img { width: 28px; height: 28px; }

/* M3 nav pills: active state is a shape + label change, not color alone. */
.nav { display: flex; gap: 4px; align-items: center; }
.nav a {
  color: var(--md-on-surface-variant);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  letter-spacing: .02em;
  padding: 8px 16px;
  border-radius: var(--shape-full);
  transition: background-color 150ms ease, color 150ms ease;
}
.nav a:hover { background: rgba(234, 226, 211, .08); color: var(--md-on-surface); }
.nav a.active { background: var(--md-primary-container); color: var(--md-on-primary-container); }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: none;
  border: 1px solid var(--md-outline-variant);
  color: var(--md-on-surface);
  border-radius: var(--shape-full);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
}

/* M3 filled button: pill, mustard fill, near-black ink (9.67:1). */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  background: var(--md-primary);
  color: var(--md-on-primary);
  padding: 10px 24px;
  border-radius: var(--shape-full);
  text-decoration: none;
  border: 0;
  font: inherit;
  font-size: 14px;
  line-height: 20px;
  font-weight: 500;
  letter-spacing: .02em;
  cursor: pointer;
  box-shadow: var(--elev-1);
  transition: background-color 150ms ease, box-shadow 150ms ease, transform 150ms ease;
}
.btn:hover { background-image: linear-gradient(rgba(42, 31, 0, .08), rgba(42, 31, 0, .08)); box-shadow: var(--elev-2); }
.btn:active { background-image: linear-gradient(rgba(42, 31, 0, .12), rgba(42, 31, 0, .12)); transform: scale(.98); }
.btn:disabled { opacity: .5; cursor: default; transform: none; }
/* M3 outlined button for secondary actions. */
.btn-ghost {
  background: transparent;
  color: var(--md-on-surface);
  border: 1px solid var(--md-outline);
  box-shadow: none;
}
.btn-ghost:hover { background: rgba(234, 226, 211, .08); background-image: none; }
.btn-small { min-height: 36px; padding: 6px 18px; }
/* Nav CTA keeps filled-button ink on the mustard fill.
   Beats .nav a / .nav a.active on equal specificity via source order. */
.nav a.btn { background: var(--md-primary); color: var(--md-on-primary); }
.nav a.btn:hover { background: var(--md-primary); background-image: linear-gradient(rgba(42, 31, 0, .08), rgba(42, 31, 0, .08)); color: var(--md-on-primary); }
.nav a.btn.active { background: var(--md-primary); color: var(--md-on-primary); }

.hero { display: grid; grid-template-columns: 1.4fr .8fr; gap: 32px; padding: 56px 20px; align-items: center; }
/* M3 label-large eyebrow. */
.eyebrow { color: var(--md-primary); text-transform: uppercase; letter-spacing: .08em; font-size: 13px; font-weight: 500; margin: 0 0 8px; }
h1 { font-size: clamp(30px, 4vw, 46px); line-height: 1.1; letter-spacing: -.015em; font-weight: 700; margin: 0 0 12px; }
h2 { font-weight: 500; letter-spacing: .005em; }
.lede { color: var(--md-on-surface-variant); font-size: 18px; }
.cta-row { display: flex; gap: 12px; margin: 20px 0; flex-wrap: wrap; }
.checklist { list-style: none; padding: 0; margin: 0; color: var(--md-on-surface-variant); }
.checklist li::before { content: "✓ "; color: var(--md-primary); font-weight: 700; }

/* M3 cards: tonal surface + hairline + 1dp elevation. */
.card, .panel {
  background: var(--md-surface-low);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-l);
  box-shadow: var(--elev-1);
  padding: 20px;
}
.card { padding: 18px; }
.card-title { font-weight: 500; margin-bottom: 8px; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px; color: var(--md-on-primary-container); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding-bottom: 32px; }
.panel h2 { margin-top: 0; }

/* CTA band: mustard primary-container, dark-on-light-tint ink (8.59:1). */
.cta-band {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border-radius: var(--shape-xl);
  box-shadow: var(--elev-1);
  padding: 28px;
  text-align: center;
  margin: 24px auto 48px;
}
.cta-band h2 { margin-top: 0; }
.cta-band p { margin-top: 0; }
main a:not(.btn):hover { text-decoration: underline; }

.service { border-bottom: 1px solid var(--md-outline-variant); padding: 20px 0; }

/* M3 outlined text fields: static labels, 12px radius, mustard focus ring. */
.form {
  display: grid;
  gap: 14px;
  background: var(--md-surface-low);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-l);
  box-shadow: var(--elev-1);
  padding: 22px;
  margin: 0 0 48px;
}
label { display: grid; gap: 6px; font-weight: 500; font-size: 14px; }
input, textarea {
  background: var(--md-surface-container);
  border: 1px solid var(--md-outline);
  border-radius: var(--shape-m);
  color: var(--md-on-surface);
  padding: 10px 12px;
  font: inherit;
  font-weight: 400;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
input:focus, textarea:focus {
  border-color: var(--md-primary);
  box-shadow: 0 0 0 1px var(--md-primary);
  outline: none;
}
::placeholder { color: var(--md-placeholder); opacity: 1; }

/* Status pairs text + icon so meaning never rides on color alone. */
.status { min-height: 1.5em; color: var(--md-on-surface-variant); margin: 4px 0 0; }
.status.ok { color: var(--md-primary); }
.status.ok::before { content: "✓ "; font-weight: 700; }
.status.err { color: var(--md-error); }
.status.err::before { content: "! "; font-weight: 700; }
.turnstile { min-height: 65px; }
.site-footer { border-top: 1px solid var(--md-outline-variant); padding: 20px 0; color: var(--md-on-surface-variant); }
.footer-wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .nav {
    display: none;
    position: absolute; top: 64px; right: 0; left: 0;
    background: var(--md-surface-container);
    box-shadow: var(--elev-2);
    border-radius: 0 0 var(--shape-l) var(--shape-l);
    padding: 12px 20px 16px;
    flex-direction: column;
    align-items: stretch;
  }
  .nav.open { display: flex; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}