:root {
  color-scheme: light;
  --bg: #f6f6f4;
  --surface: #fcfcfb;
  --surface-2: #f0efec;
  --border: #dddcd7;
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #7a7974;
  --accent: #2a78d6;
  --accent-ink: #1c5cab;
  --accent-soft: #e3effc;
  --good: #0ca30c;
  --good-ink: #006300;
  --good-soft: #e3f4e3;
  --bad: #d03b3b;
  --bad-ink: #a42525;
  --bad-soft: #fbe6e6;
  --warn-soft: #fff3d6;
  --code-bg: #f3f2ee;
  /* rampe séquentielle (maîtrise) */
  --seq-100: #cde2fb; --seq-200: #9ec5f4; --seq-300: #6da7ec; --seq-400: #3987e5;
  --seq-500: #256abf; --seq-600: #184f95; --seq-700: #0d366b;
  --series-1: #2a78d6;
  --radius: 10px;
  --shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 2px 8px rgb(0 0 0 / 4%);
  --mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --border: #383835;
    --text: #ffffff; --text-2: #c3c2b7; --muted: #8f8e86;
    --accent: #3987e5; --accent-ink: #86b6ef; --accent-soft: #1b2b40;
    --good-ink: #6fd66f; --good-soft: #15301a; --bad-ink: #f08a8a; --bad-soft: #3a1c1c;
    --warn-soft: #3a2f12; --code-bg: #20201e; --series-1: #3987e5;
    --shadow: 0 1px 2px rgb(0 0 0 / 40%);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --border: #383835;
  --text: #ffffff; --text-2: #c3c2b7; --muted: #8f8e86;
  --accent: #3987e5; --accent-ink: #86b6ef; --accent-soft: #1b2b40;
  --good-ink: #6fd66f; --good-soft: #15301a; --bad-ink: #f08a8a; --bad-soft: #3a1c1c;
  --warn-soft: #3a2f12; --code-bg: #20201e; --series-1: #3987e5;
  --shadow: 0 1px 2px rgb(0 0 0 / 40%);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent-ink); }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 .6rem; }
h3 { font-size: 1rem; margin: 1rem 0 .4rem; }
code, pre, textarea.code { font-family: var(--mono); font-size: .9em; }
:not(pre) > code { background: var(--code-bg); padding: .1em .35em; border-radius: 4px; }
pre { background: var(--code-bg); padding: .8rem 1rem; border-radius: 8px; overflow-x: auto; line-height: 1.45; margin: .6rem 0; }
pre code { background: none; padding: 0; }
blockquote { margin: .6rem 0; padding: .3rem 1rem; border-left: 3px solid var(--accent); color: var(--text-2); }
table { border-collapse: collapse; }
.md table, table.data { margin: .6rem 0; font-size: .92em; }
.md th, .md td, table.data th, table.data td { border: 1px solid var(--border); padding: .3rem .6rem; text-align: left; }
.md th, table.data th { background: var(--surface-2); font-weight: 600; }
table.data { width: 100%; background: var(--surface); }
table.data tr.clickable { cursor: pointer; }
table.data tr.clickable:hover td { background: var(--accent-soft); }
.table-wrap { overflow-x: auto; }
.num { text-align: right; font-variant-numeric: tabular-nums; }

/* ---- structure ---- */
.topbar {
  display: flex; align-items: center; gap: 1rem; padding: .6rem 1rem;
  background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; text-decoration: none; color: var(--text); font-size: 1.05rem; }
.brand span { color: var(--accent); }
.nav { display: flex; gap: .2rem; flex-wrap: wrap; flex: 1; }
.nav a { text-decoration: none; color: var(--text-2); padding: .35rem .7rem; border-radius: 6px; }
.nav a.active, .nav a:hover { background: var(--accent-soft); color: var(--accent-ink); }
.user-menu { display: flex; align-items: center; gap: .5rem; color: var(--text-2); font-size: .9rem; }
main { max-width: 1200px; margin: 0 auto; padding: 1.25rem 1rem 4rem; }
.row { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.stack > * + * { margin-top: .6rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.split { display: grid; gap: 1.25rem; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; box-shadow: var(--shadow); }
.card h3:first-child, .card h2:first-child { margin-top: 0; }
.sticky { position: sticky; top: 4.2rem; max-height: calc(100vh - 5rem); overflow: auto; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.pill { white-space: nowrap; display: inline-block; padding: .05rem .5rem; border-radius: 99px; font-size: .78rem; background: var(--surface-2); color: var(--text-2); }
.uid { display: inline-block; font-family: var(--mono); font-size: .75rem; font-weight: 600; padding: .05rem .4rem; border-radius: 5px;
  background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border); white-space: nowrap; vertical-align: middle; margin-right: .25rem; }
.pill.accent { background: var(--accent-soft); color: var(--accent-ink); }
.pill.good { background: var(--good-soft); color: var(--good-ink); }
.pill.bad { background: var(--bad-soft); color: var(--bad-ink); }
.empty { padding: 1.5rem; text-align: center; color: var(--muted); border: 1px dashed var(--border); border-radius: var(--radius); }
hr { border: none; border-top: 1px solid var(--border); margin: 1rem 0; }

/* ---- formulaires ---- */
label { display: block; font-weight: 600; font-size: .88rem; margin-bottom: .2rem; color: var(--text-2); }
label.inline { display: inline-flex; align-items: center; gap: .35rem; font-weight: 400; color: var(--text); margin: 0; }
input[type=text], input[type=password], input[type=number], input[type=date], input[type=search], select, textarea {
  width: 100%; padding: .45rem .6rem; border: 1px solid var(--border); border-radius: 7px;
  background: var(--surface); color: var(--text); font: inherit;
}
textarea { resize: vertical; min-height: 4rem; }
textarea.code { min-height: 8rem; tab-size: 4; white-space: pre; background: var(--code-bg); line-height: 1.45; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.field { margin-bottom: .8rem; }
.fields-2 { display: grid; gap: .6rem; grid-template-columns: 1fr 1fr; }
.fields-3 { display: grid; gap: .6rem; grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 600px) { .fields-2, .fields-3 { grid-template-columns: 1fr; } }
.hint { font-size: .8rem; color: var(--muted); margin-top: .2rem; }
button, .btn {
  display: inline-flex; align-items: center; gap: .35rem; padding: .45rem .9rem; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text); font: inherit; font-weight: 500;
  text-decoration: none; white-space: nowrap;
}
button:hover, .btn:hover { background: var(--surface-2); }
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover, .btn.primary:hover { filter: brightness(1.08); background: var(--accent); }
button.danger { color: var(--bad-ink); }
button.small, .btn.small { padding: .2rem .55rem; font-size: .85rem; }
button:disabled { opacity: .55; cursor: default; }
button.link { border: none; background: none; color: var(--accent-ink); padding: 0; text-decoration: underline; }
.tabs { display: flex; gap: .2rem; border-bottom: 1px solid var(--border); margin-bottom: 1rem; flex-wrap: wrap; }
.tabs a { padding: .5rem .9rem; text-decoration: none; color: var(--text-2); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a.active { color: var(--accent-ink); border-bottom-color: var(--accent); font-weight: 600; }
.checklist { max-height: 22rem; overflow: auto; border: 1px solid var(--border); border-radius: 7px; padding: .4rem .6rem; background: var(--surface); }
.checklist label.inline { display: flex; padding: .15rem 0; }
.checklist .group { font-weight: 600; margin: .5rem 0 .15rem; color: var(--text-2); font-size: .85rem; }

/* ---- messages ---- */
.toast-box { position: fixed; bottom: 1rem; right: 1rem; display: flex; flex-direction: column; gap: .5rem; z-index: 100; }
.toast { background: var(--text); color: var(--bg); padding: .6rem 1rem; border-radius: 8px; box-shadow: var(--shadow); max-width: 26rem; }
.toast.error { background: var(--bad); color: #fff; }
.alert { padding: .6rem .8rem; border-radius: 8px; margin: .6rem 0; }
.alert.error { background: var(--bad-soft); color: var(--bad-ink); }
.alert.info { background: var(--accent-soft); color: var(--accent-ink); }
.alert.warn { background: var(--warn-soft); }
.modal-bg { position: fixed; inset: 0; background: rgb(0 0 0 / 45%); display: flex; align-items: flex-start; justify-content: center; padding: 5vh 1rem; z-index: 50; overflow: auto; }
.modal { background: var(--surface); border-radius: var(--radius); padding: 1.25rem; width: min(640px, 100%); box-shadow: var(--shadow); }

/* ---- question / lecteur ---- */
.question .statement { font-size: 1.02rem; }
.answer-field { margin: 1rem 0; }
.answer-field .suffix { margin-left: .4rem; color: var(--text-2); }
.answer-field input[type=text] { max-width: 24rem; }
.options { display: flex; flex-direction: column; gap: .35rem; }
.option { display: flex; gap: .6rem; align-items: flex-start; padding: .5rem .7rem; border: 1px solid var(--border); border-radius: 8px; cursor: pointer; background: var(--surface); font-weight: 400; color: var(--text); }
.option:hover { border-color: var(--accent); }
.option input { margin-top: .25rem; }
.option .md p { margin: 0; }
.option.correct { border-color: var(--good); background: var(--good-soft); }
.option.wrong { border-color: var(--bad); background: var(--bad-soft); }
.feedback { border-radius: 8px; padding: .5rem .8rem; margin-top: .5rem; }
.feedback.ok { background: var(--good-soft); }
.feedback.ko { background: var(--bad-soft); }
.feedback .md > :first-child { margin-top: 0; }
.feedback .md > :last-child { margin-bottom: 0; }
.verdict { font-weight: 700; display: inline-flex; align-items: center; gap: .4rem; }
.verdict.ok { color: var(--good-ink); }
.verdict.ko { color: var(--bad-ink); }
.hint-box { margin-top: .5rem; }
.hint-box .md, .hint-box .md p { display: inline; margin: 0; }
.solution { border-top: 1px solid var(--border); margin-top: 1rem; padding-top: .6rem; }
.qnav { display: flex; flex-direction: column; gap: .3rem; }
.qnav a { display: flex; justify-content: space-between; gap: .5rem; padding: .4rem .6rem; border-radius: 6px; text-decoration: none; color: var(--text); border: 1px solid var(--border); }
.qnav a.current { border-color: var(--accent); background: var(--accent-soft); }

/* ---- visualisations ---- */
.meter { display: flex; align-items: center; gap: .5rem; }
.meter .track { flex: 1; height: 8px; background: var(--surface-2); border-radius: 99px; overflow: hidden; min-width: 60px; }
.meter .fill { height: 100%; background: var(--series-1); border-radius: 99px; }
.meter .val { font-variant-numeric: tabular-nums; font-size: .85rem; color: var(--text-2); min-width: 2.8rem; text-align: right; }
.stat-tiles { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); margin-bottom: 1rem; }
.stat-tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: .8rem 1rem; }
.stat-tile .v { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-tile .l { color: var(--text-2); font-size: .85rem; }
.heat { border-collapse: separate; border-spacing: 2px; font-size: .82rem; }
.heat th { font-weight: 600; color: var(--text-2); padding: .2rem .4rem; text-align: left; }
.heat th.col { writing-mode: vertical-rl; transform: rotate(180deg); vertical-align: bottom; max-height: 12rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 500; }
.heat td.cell { width: 3rem; min-width: 3rem; height: 2rem; text-align: center; border-radius: 4px; font-variant-numeric: tabular-nums; cursor: default; }
.heat td.cell.none { background: var(--surface-2); color: var(--muted); }
.heat td.name { white-space: nowrap; padding-right: .6rem; }
.heat tr.avg td { font-weight: 600; }
.legend { display: flex; align-items: center; gap: .3rem; font-size: .8rem; color: var(--text-2); margin: .4rem 0; flex-wrap: wrap; }
.legend .sw { width: 1.4rem; height: .8rem; border-radius: 3px; display: inline-block; }
.chart { max-width: 100%; height: auto; display: block; }
.chart text { fill: var(--text-2); font-size: 11px; }
.chart .grid-line { stroke: var(--border); stroke-width: 1; }
.chart .bar { fill: var(--series-1); }
.chart .bar:hover, .chart .hit:hover + .bar { fill: var(--seq-600); }
.tooltip { position: fixed; pointer-events: none; background: var(--text); color: var(--bg); padding: .35rem .6rem; border-radius: 6px; font-size: .8rem; z-index: 200; white-space: pre; box-shadow: var(--shadow); }

/* ---- numéros de ligne ---- */
.code-wrap { display: flex; align-items: stretch; background: var(--code-bg); border: 1px solid var(--border); border-radius: 7px; overflow: hidden; }
.code-wrap:focus-within { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.code-wrap textarea.code { border: none; border-radius: 0; outline: none; flex: 1; min-width: 0; margin: 0; padding: .45rem .6rem; overflow: auto; }
.code-wrap .gutter, .code-wrap textarea.code { font-family: var(--mono); font-size: 13.5px; line-height: 1.45; }
.gutter { margin: 0; padding: .45rem .5rem; min-width: 2.6em; text-align: right; color: var(--muted); background: var(--surface-2);
  border-right: 1px solid var(--border); user-select: none; overflow: hidden; white-space: pre; }
.code-wrap .gutter span { display: block; }
.code-wrap .gutter span.err { background: var(--bad); color: #fff; border-radius: 3px; font-weight: 700; }
.code-block { display: flex; background: var(--code-bg); border-radius: 8px; margin: .6rem 0; overflow: hidden; }
.code-block pre { margin: 0; border-radius: 0; }
.code-block pre.gutter { padding: .8rem .5rem; line-height: 1.45; flex: none; }
.code-block pre:not(.gutter) { flex: 1; min-width: 0; padding-left: .8rem; }

/* ---- éditeur ---- */
.field-card { border: 1px solid var(--border); border-radius: 8px; padding: .8rem; margin-bottom: .8rem; background: var(--surface-2); }
.field-card .head { display: flex; gap: .5rem; align-items: center; margin-bottom: .6rem; }
.opt-row { display: grid; grid-template-columns: 1fr 9rem 2rem; gap: .4rem; margin-bottom: .3rem; }
.error-line { color: var(--bad-ink); font-weight: 600; }
details.help { background: var(--surface-2); border-radius: 8px; padding: .5rem .8rem; margin: .6rem 0; }
details.help summary { cursor: pointer; font-weight: 600; }
details.help dt { font-family: var(--mono); font-size: .85rem; margin-top: .3rem; }
details.help dd { margin: 0 0 0 1rem; font-size: .85rem; color: var(--text-2); }

.app-footer { text-align: center; color: var(--muted); font-size: .75rem; padding: 0 1rem 1.5rem; }
.pw-wrap { position: relative; }
.pw-wrap input { padding-right: 2.6rem; }
.pw-toggle { position: absolute; top: 50%; right: .3rem; transform: translateY(-50%); padding: .25rem; border: none;
  background: transparent; color: var(--text-2); display: inline-flex; border-radius: 5px; }
.pw-toggle:hover { background: var(--surface-2); color: var(--text); }
.pw-toggle:focus-visible { outline: 2px solid var(--accent); }
.login-wrap { max-width: 380px; margin: 10vh auto; }
.hljs { background: transparent !important; padding: 0 !important; }
@media (max-width: 700px) {
  .topbar { flex-wrap: wrap; }
  .user-menu { width: 100%; justify-content: flex-end; }
}