/* Grind — style commun (site, app, pages légales). Identité sombre volontaire. */
:root {
  color-scheme: dark;
  --bg: #0a0a0f;
  --bg-alt: #101018;
  --surface: #15151f;
  --surface-2: #1c1c29;
  --ink: #f4f4f7;
  --ink-2: #c9c9d6;
  --muted: #8d8da0;
  --line: #262636;
  --lime: #c6ff3d;
  --lime-ink: #10140a;
  --violet: #7a5cff;
  --fire: #ff7a1a;
  --ok: #4ade80;
  --warn: #fbbf24;
  --bad: #f87171;
  --radius: 20px;
  --shadow: 0 20px 50px -20px rgba(0,0,0,.8);
  --glow: 0 0 0 1px rgba(198,255,61,.35), 0 12px 40px -10px rgba(198,255,61,.45);
  --display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--ink); font: 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: var(--lime); text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--display); font-weight: 700; line-height: 1.05; margin: 0 0 .5em; letter-spacing: -.035em; }
.lime { color: var(--lime); }
.fire { color: var(--fire); }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } }
.muted { color: var(--muted); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: .45em; white-space: nowrap; border: 1px solid var(--line); background: var(--surface); color: var(--ink); padding: .78em 1.35em; border-radius: 14px; font: 700 15px var(--sans); cursor: pointer; text-decoration: none; transition: transform .12s, box-shadow .2s, border-color .2s, background .2s; }
.btn:hover { transform: translateY(-1px); border-color: #3a3a52; background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--lime); outline-offset: 3px; }
.btn-primary { background: var(--lime); color: var(--lime-ink); border-color: transparent; box-shadow: 0 6px 0 #7fa61f, var(--glow); }
.btn-primary:hover { background: #d4ff66; border-color: transparent; box-shadow: 0 7px 0 #7fa61f, var(--glow); }
.btn-primary:active { box-shadow: 0 2px 0 #7fa61f, var(--glow); transform: translateY(4px); }
.btn-small { padding: .5em 1em; font-size: 14px; border-radius: 11px; }
.btn-small.btn-primary { box-shadow: 0 4px 0 #7fa61f; }
.btn-lg { padding: 1em 1.7em; font-size: 17px; border-radius: 16px; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .5; cursor: not-allowed; transform: none; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }

.top { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 66px; }
.top::before { content: ""; position: absolute; z-index: -1; top: 0; bottom: 0; left: 50%; width: 100vw; transform: translateX(-50%); background: rgba(10,10,15,.85); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.logo { display: inline-flex; align-items: center; gap: 10px; font: 700 23px var(--display); color: var(--ink); text-decoration: none; letter-spacing: -.04em; }
.logo::before { content: "G"; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: var(--lime); color: var(--lime-ink); font: 800 21px var(--display); transform: rotate(-6deg); box-shadow: 0 4px 0 #7fa61f; }
.top nav { display: flex; gap: 4px; align-items: center; }
.top nav a.link { color: var(--ink-2); text-decoration: none; font-size: 15px; font-weight: 600; padding: 8px 12px; border-radius: 10px; }
.top nav a.link:hover { background: var(--surface); color: var(--ink); }
@media (max-width: 680px) { .top nav a.link { display: none; } }

.foot { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; padding: 36px 0 48px; margin-top: 80px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.foot nav { display: flex; flex-wrap: wrap; gap: 18px; margin-left: auto; }
.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { color: var(--ink); }
@media (max-width: 680px) { .foot nav { margin-left: 0; } }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } .btn { transition: none; } }