/* Cyberiack — feuille de style principale (CSS3 pur, sans framework) */

:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --text: #141a2e;
  --muted: #5b647d;
  --border: #e2e6f0;
  --accent: #0a7cff;
  --accent-2: #00b38f;
  --radius: 14px;
  --shadow: 0 1px 2px rgb(20 26 46 / .06), 0 8px 24px rgb(20 26 46 / .06);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1020;
    --surface: #121a30;
    --text: #e7ebf5;
    --muted: #97a1bb;
    --border: #232d48;
    --accent: #3d9bff;
    --accent-2: #2ee6b8;
    --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 8px 24px rgb(0 0 0 / .25);
  }
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font: 17px/1.65 var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 3px; }
img { max-width: 100%; height: auto; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; z-index: 10; background: var(--surface); padding: 8px 12px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }

/* En-tête */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 24px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-size: 1.35rem; font-weight: 700; letter-spacing: -.02em; }
.brand b { color: var(--accent-2); }
.nav { display: flex; gap: 20px; margin-left: auto; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; font-size: .95rem; }
.nav a:hover, .nav a[aria-current] { color: var(--text); }
.nav-toggle { display: none; margin-left: auto; font: inherit; background: none; border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 6px 12px; cursor: pointer; }

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav { display: none; position: absolute; inset: 64px 0 auto; flex-direction: column; gap: 0; background: var(--surface); border-bottom: 1px solid var(--border); }
  .nav a { padding: 14px 16px; border-top: 1px solid var(--border); }
  .nav.open { display: flex; }
}

main { padding-block: 32px 64px; }

/* Cartes */
.section-title { font-size: 1.1rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 40px 0 16px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px; display: flex; flex-direction: column; gap: 8px;
  transition: transform .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent); }
.card-cat { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--accent-2); text-decoration: none; }
.card-title { margin: 0; font-size: 1.2rem; line-height: 1.3; }
.card-title a { color: var(--text); text-decoration: none; }
.card-title a:hover { color: var(--accent); }
.card-summary { margin: 0; color: var(--muted); }
.card--featured { padding: 36px; background: linear-gradient(135deg, var(--surface), color-mix(in srgb, var(--accent) 10%, var(--surface))); }
.card--featured .card-title { font-size: clamp(1.6rem, 3.5vw, 2.4rem); letter-spacing: -.02em; }
.meta { margin: auto 0 0; font-size: .85rem; color: var(--muted); }

/* Article */
.crumbs { font-size: .9rem; color: var(--muted); margin-bottom: 24px; }
.crumbs a { color: var(--muted); }
.post { max-width: 740px; margin-inline: auto; }
.post h1, .page-title { font-size: clamp(1.9rem, 4vw, 2.8rem); line-height: 1.15; letter-spacing: -.02em; margin: 8px 0 16px; }
.lead { font-size: 1.2rem; color: var(--muted); }
.cover { border-radius: var(--radius); margin: 16px 0; }
.prose h2 { margin-top: 2em; font-size: 1.5rem; }
.prose code { font-family: var(--mono); font-size: .9em; background: var(--surface); border: 1px solid var(--border); padding: 1px 5px; border-radius: 5px; }
.prose blockquote { margin: 1.5em 0; padding-left: 16px; border-left: 3px solid var(--accent); color: var(--muted); }
.sources { margin-top: 40px; padding: 20px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); font-size: .95rem; }
.sources h2 { font-size: 1rem; margin: 0 0 8px; }
.tags a { display: inline-block; margin: 4px 6px 0 0; padding: 2px 10px; border: 1px solid var(--border); border-radius: 999px; font-size: .85rem; text-decoration: none; color: var(--muted); }

/* Pied de page */
.site-footer { border-top: 1px solid var(--border); padding: 24px 0; color: var(--muted); font-size: .9rem; }
.site-footer a { color: var(--muted); }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }