/* Site de LinXdiagram : aucune ressource externe (RGPD), contrastes WCAG 2.1 AA. */
:root {
  --accent: #005a9e; --accent-strong: #004578; --accent-soft: #e5eff8;
  --bg: #ffffff; --bg2: #f5f6f8; --text: #1f2329; --text2: #4a5160; --border: #dde1e8;
  --radius: 10px; --max: 1080px;
  font-family: system-ui, -apple-system, "Segoe UI", Inter, Cantarell, "Noto Sans", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --accent: #76b8ed; --accent-strong: #a2d5fc; --accent-soft: #22384f;
          --bg: #15171c; --bg2: #1d2027; --text: #eceef2; --text2: #b4bac6; --border: #333844; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.6; font-size: 1.0625rem; }
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { color: var(--accent-strong); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--accent); color: #fff; padding: 8px 14px; z-index: 10; }
.skip:focus { left: 8px; top: 8px; color: #fff; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
header.top { border-bottom: 1px solid var(--border); background: var(--bg); position: sticky; top: 0; z-index: 5; }
header.top .wrap { display: flex; align-items: center; gap: 16px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
.brand img { width: 32px; height: 32px; }
nav.main { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
nav.main a { color: var(--text2); text-decoration: none; font-weight: 500; }
nav.main a:hover, nav.main a[aria-current="page"] { color: var(--accent); }
.hero { padding: 56px 0 32px; background: linear-gradient(180deg, var(--accent-soft), var(--bg)); }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.15; margin: 0 0 12px; }
.hero p.lead { font-size: 1.2rem; color: var(--text2); max-width: 760px; margin: 0 0 24px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 11px 20px; border-radius: 8px; font-weight: 600; text-decoration: none; border: 1px solid var(--accent); }
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-strong); color: #fff; }
.btn.secondary { color: var(--accent); background: transparent; }
.shot { margin: 32px 0 0; }
.shot img { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: 0 10px 30px rgba(20, 30, 60, .12); display: block; }
.shot figcaption { color: var(--text2); font-size: .95rem; margin-top: 8px; }
section { padding: 40px 0; }
section.alt { background: var(--bg2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
h2 { font-size: 1.7rem; margin: 0 0 18px; }
h3 { font-size: 1.15rem; margin: 0 0 6px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.card p { margin: 0; color: var(--text2); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
@media (max-width: 760px) { .two { grid-template-columns: 1fr; } nav.main { margin-left: 0; } }
.two img { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--border); }
ul.check { padding-left: 1.2em; } ul.check li { margin: 4px 0; }
pre { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 14px; overflow-x: auto; font-size: .95rem; }
code { font-family: ui-monospace, "JetBrains Mono", "DejaVu Sans Mono", monospace; }
table { border-collapse: collapse; width: 100%; margin: 12px 0; }
th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; vertical-align: top; overflow-wrap: anywhere; }
th { background: var(--bg2); }
.note { border-left: 4px solid var(--accent); background: var(--accent-soft); padding: 12px 16px; border-radius: 0 8px 8px 0; }
main.doc { padding: 36px 0 48px; } main.doc h1 { font-size: 2rem; margin-top: 0; } main.doc h2 { font-size: 1.35rem; margin-top: 32px; }
footer { border-top: 1px solid var(--border); padding: 28px 0; color: var(--text2); font-size: .95rem; }
footer nav { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 10px; }

.catalog-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; margin-top: 22px; }
.catalog details { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 16px; }
.catalog summary { color: var(--text); font-weight: 650; cursor: pointer; }
.catalog summary span { color: var(--text2); font-size: .9rem; font-weight: 500; margin-left: 6px; }
.catalog details ul { columns: 2; padding-left: 1.1em; margin: 10px 0 2px; color: var(--text2); font-size: .94rem; }
.catalog details li { break-inside: avoid; margin: 2px 0; }