:root {
  --bg: #f6f7f9; --card: #fff; --text: #1d2330; --muted: #6b7280; --line: #e3e6eb;
  --accent: #1f6feb; --accent-dark: #1757b8; --ok: #15803d; --warn-bg: #fff7e6; --err: #b91c1c; --err-bg: #fdecec;
  --code-bg: #111827; --code-text: #e5e7eb;
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--text); background: var(--bg); }
a { color: var(--accent); }
h1 { font-size: 30px; margin: 0 0 12px; line-height: 1.2; }
h2 { font-size: 21px; margin: 28px 0 8px; }
h3 { font-size: 17px; margin: 18px 0 6px; }
code { background: #e9ecf1; padding: 1px 5px; border-radius: 4px; font-size: 14px; }
pre.code { background: var(--code-bg); color: var(--code-text); padding: 14px 16px; border-radius: 8px; overflow-x: auto; font-size: 13.5px; }
pre.code.big { font-size: 16px; user-select: all; }
.muted { color: var(--muted); }
.small { font-size: 13.5px; }
.lead { font-size: 18px; color: #374151; }

.site-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 24px; background: var(--card); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 20px; color: var(--text); text-decoration: none; }
.site-header nav { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.site-header nav a { color: var(--text); text-decoration: none; }
.site-header nav a:hover { color: var(--accent); }
.site-header nav .account { font-weight: 600; }
.site-footer { padding: 24px; text-align: center; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); margin-top: 48px; }

main.page { max-width: 1040px; margin: 0 auto; padding: 28px 24px; }
.button, button { display: inline-block; background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 9px 16px; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; }
.button:hover, button:hover { background: var(--accent-dark); }
.button.secondary, button.secondary { background: #e9ecf1; color: var(--text); }
.button.secondary:hover, button.secondary:hover { background: #dde1e8; }
.button.big, button.big { padding: 13px 24px; font-size: 17px; }
button.small { padding: 5px 10px; font-size: 13px; }
button.danger { background: var(--err); }
.site-header nav a.button { color: #fff; }

.hero { text-align: center; padding: 40px 0 24px; }
.hero h1 { font-size: 38px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin: 20px 0 8px; }
.three { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin: 32px 0; }
.three > div { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.three h2 { margin-top: 0; }
.two { display: grid; grid-template-columns: 2fr 1fr; gap: 28px; }
@media (max-width: 760px) { .two { grid-template-columns: 1fr; } .hero h1 { font-size: 28px; } }
.row { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin: 14px 0; }
.feature h2 { margin-top: 0; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.card { display: flex; flex-direction: column; gap: 4px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; color: var(--text); text-decoration: none; }
.card:hover { border-color: var(--accent); }
.type { display: inline-block; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; font-weight: 700; color: var(--muted); }
.type.exercice { color: var(--ok); } .type.examen { color: var(--err); }
.tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 4px; }
.tag { background: #e9ecf1; border-radius: 10px; padding: 1px 8px; font-size: 12px; color: var(--text); text-decoration: none; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0 20px; }
.filters input[type=search] { flex: 1; min-width: 200px; }
input, select, textarea { font: inherit; padding: 8px 10px; border: 1px solid #cfd4dc; border-radius: 8px; background: #fff; }
.form p { margin: 0 0 14px; }
.form label { display: block; font-weight: 600; }
.form label input, .form label select, .form label textarea, .form p input:not([type=checkbox]), .form p select, .form p textarea { display: block; width: 100%; margin-top: 4px; font-weight: 400; }
.form .check label, .form p label:has(input[type=checkbox]) { display: flex; gap: 8px; align-items: center; font-weight: 400; }
.form .check input, .form p label input[type=checkbox] { width: auto; display: inline; margin: 0; }
.form .helptext, .help { display: block; color: var(--muted); font-size: 13px; margin-top: 2px; }
.form.narrow { max-width: 420px; }
.errorlist { color: var(--err); margin: 0 0 6px; padding-left: 18px; font-size: 14px; }
.inline-form { display: flex; gap: 8px; align-items: center; }
form.inline { display: inline; }
.messages { max-width: 1040px; margin: 12px auto 0; padding: 0 24px; }
.message { background: #e6f0ff; border-radius: 8px; padding: 10px 14px; margin-bottom: 8px; }
.message.error { background: var(--err-bg); color: var(--err); }
.message.success { background: #e7f6ec; color: var(--ok); }
.notice { background: #e6f0ff; border-radius: 8px; padding: 12px 16px; }
.notice.warn { background: var(--warn-bg); }
.problems { background: var(--err-bg); color: var(--err); border-radius: 8px; padding: 12px 16px; margin-bottom: 16px; }
.problems ul { margin: 6px 0 0; }

table.files { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
table.files th, table.files td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.files th { background: #f0f2f5; font-size: 13px; }
code.sha { font-size: 11px; word-break: break-all; }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; }
dl.facts dt { font-weight: 600; color: var(--muted); } dl.facts dd { margin: 0; }
.readme { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 22px; margin-top: 24px; }
.readme-body pre { background: var(--code-bg); color: var(--code-text); padding: 12px 14px; border-radius: 8px; overflow-x: auto; }
.readme-body pre code { background: none; color: inherit; padding: 0; }
.readme-body table { border-collapse: collapse; } .readme-body td, .readme-body th { border: 1px solid var(--line); padding: 4px 8px; }
.readme-body img { max-width: 100%; }
.signaler { margin-top: 24px; color: var(--muted); }
.danger-zone { margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--line); }
.pagination { display: flex; gap: 16px; justify-content: center; margin-top: 20px; }

.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin: 24px 0; }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 22px 24px; }
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 3px #1f6feb22; }
.plan h2 { margin-top: 0; }
.price { font-size: 26px; font-weight: 700; margin: 4px 0 12px; }
.plan ul { padding-left: 20px; }
ol.charte li { margin-bottom: 10px; }