/* TAGE MAGE Trainer — feuille de style */
:root {
  --ink: #17233b;          /* encre bleu nuit */
  --ink-2: #3b4a6b;
  --ink-3: #6b7894;
  --paper: #f7f5ef;        /* papier de grille de réponses */
  --paper-2: #ffffff;
  --line: #d9d4c7;
  --marker: #ffe45c;       /* surligneur */
  --marker-ink: #5a4a00;
  --accent: #0f5c8c;       /* bleu stylo */
  --accent-2: #0b4468;
  --ok: #1f7a4d;
  --ok-bg: #e2f3e9;
  --ko: #b23a3a;
  --ko-bg: #f9e3e3;
  --warn: #a5650b;
  --warn-bg: #fff1d6;
  --shadow: 0 1px 2px rgba(23, 35, 59, .06), 0 6px 18px rgba(23, 35, 59, .07);
  --radius: 10px;
  --bar-bg: #17233b;       /* barre et bandeau : toujours sombres */
  --bar-ink: #ffffff;
  --bar-muted: #b8c2d8;
  --btn-ink: #ffffff;
  --font-body: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "Fraunces", "Georgia", serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; font-family: var(--font-body); color: var(--ink); background: var(--paper); font-size: 16px; line-height: 1.5; }
a { color: var(--accent); }
button { font: inherit; cursor: pointer; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.2; text-wrap: balance; margin: 0 0 .5em; }
h1 { font-size: 2rem; } h2 { font-size: 1.5rem; } h3 { font-size: 1.2rem; }
.hidden { display: none !important; }

/* ---------- layout ---------- */
.topbar { position: sticky; top: 0; z-index: 20; background: var(--bar-bg); color: var(--bar-ink); display: flex; align-items: center; gap: 12px; padding: 10px 16px; box-shadow: var(--shadow); }
.topbar .brand { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; letter-spacing: .01em; display: flex; align-items: center; gap: 10px; }
.topbar .brand .logo { background: #ffe45c; color: #17233b; border-radius: 6px; padding: 2px 7px; font-size: .8rem; font-weight: 800; font-family: var(--font-mono); }
.topbar nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.topbar nav button { background: transparent; border: 0; color: var(--bar-muted); padding: 8px 12px; border-radius: 8px; font-weight: 600; }
.topbar nav button:hover { background: rgba(255,255,255,.1); color: #fff; }
.topbar nav button.active { background: #ffe45c; color: #17233b; }
.topbar .iconbtn { background: transparent; border: 1px solid rgba(255,255,255,.25); color: #fff; border-radius: 8px; padding: 6px 10px; }
main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 80px; }
.screen { animation: fade .2s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .screen { animation: none; } }

.card { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow); }
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.muted { color: var(--ink-3); }
.small { font-size: .88rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .72rem; font-weight: 700; color: var(--ink-3); }

.btn { background: var(--accent); color: var(--btn-ink); border: 0; border-radius: 8px; padding: 10px 16px; font-weight: 600; display: inline-flex; align-items: center; gap: 8px; }
.btn:hover { background: var(--accent-2); }
.btn.secondary { background: transparent; color: var(--accent); border: 1.5px solid var(--accent); }
.btn.secondary:hover { background: rgba(15, 92, 140, .08); }
.btn.ghost { background: transparent; color: var(--ink-2); border: 1px solid var(--line); }
.btn.marker { background: var(--marker); color: var(--marker-ink); }
.btn.danger { background: var(--ko); color: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.lg { padding: 14px 22px; font-size: 1.05rem; }
.btn.sm { padding: 6px 10px; font-size: .85rem; }
.pill { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: .75rem; font-weight: 700; background: var(--paper); border: 1px solid var(--line); color: var(--ink-2); }
.pill.ok { background: var(--ok-bg); color: var(--ok); border-color: transparent; }
.pill.ko { background: var(--ko-bg); color: var(--ko); border-color: transparent; }
.pill.warn { background: var(--warn-bg); color: var(--warn); border-color: transparent; }
.pill.acc { background: var(--accent); color: var(--btn-ink); border-color: transparent; }

label.field { display: flex; flex-direction: column; gap: 4px; font-size: .9rem; font-weight: 600; color: var(--ink-2); }
select, input[type=number], input[type=text] { font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper-2); color: var(--ink); min-width: 120px; }
.check { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; }

/* ---------- accueil ---------- */
.hero { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; align-items: stretch; }
@media (max-width: 760px) { .hero { grid-template-columns: 1fr; } }
.hero .card.big { background: var(--bar-bg); color: var(--bar-ink); border: 0; }
.hero .card.big .btn.marker { background: #ffe45c; color: #5a4a00; }
.hero .card.big .btn:not(.marker) { color: #fff; }
.hero .card.big h1 { color: var(--bar-ink); font-size: 2.2rem; }
.hero .card.big .muted { color: var(--bar-muted); }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat b { font-size: 1.6rem; font-family: var(--font-display); font-variant-numeric: tabular-nums; }
.subtest-tile { display: flex; flex-direction: column; gap: 6px; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper-2); box-shadow: var(--shadow); text-align: left; color: inherit; }
.subtest-tile:hover { border-color: var(--accent); }
.subtest-tile .num { font-family: var(--font-mono); font-size: .75rem; color: var(--ink-3); }
.subtest-tile .t { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; }
.bar { height: 6px; background: var(--paper); border-radius: 3px; overflow: hidden; border: 1px solid var(--line); }
.bar > i { display: block; height: 100%; background: var(--accent); }
.bar.ok > i { background: var(--ok); }

/* ---------- cours ---------- */
.cours-layout { display: grid; grid-template-columns: 280px 1fr; gap: 20px; align-items: start; }
@media (max-width: 860px) { .cours-layout { grid-template-columns: 1fr; } .cours-nav { position: static !important; max-height: none !important; } }
.cours-nav { position: sticky; top: 70px; max-height: calc(100vh - 90px); overflow: auto; padding: 8px; }
.cours-nav .sec { margin-bottom: 10px; }
.cours-nav .sec > button { width: 100%; text-align: left; background: transparent; border: 0; font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; color: var(--ink); padding: 8px 10px; border-radius: 8px; display: flex; justify-content: space-between; align-items: center; }
.cours-nav .sec > button:hover, .cours-nav .sec > button.active { background: var(--paper); }
.cours-nav ol { list-style: none; margin: 0; padding: 0 0 0 4px; }
.cours-nav ol button { width: 100%; text-align: left; background: transparent; border: 0; padding: 6px 10px; border-radius: 6px; color: var(--ink-2); font-size: .9rem; display: flex; gap: 8px; }
.cours-nav ol button:hover { background: var(--paper); color: var(--ink); }
.cours-nav ol button.active { background: var(--marker); color: var(--marker-ink); font-weight: 600; }
.cours-nav ol button .n { font-family: var(--font-mono); font-size: .75rem; opacity: .7; min-width: 20px; }
.cours-body { min-width: 0; }
.cours-body h2 { font-size: 1.8rem; }
.cours-body h3 { margin-top: 1.6em; font-size: 1.25rem; border-bottom: 2px solid var(--marker); display: inline-block; padding-bottom: 2px; }
.cours-body h4 { margin: 1.2em 0 .4em; font-size: 1.02rem; color: var(--ink-2); }
.cours-body p, .cours-body li { max-width: 72ch; }
.cours-body table { border-collapse: collapse; margin: 12px 0; font-size: .92rem; display: block; overflow-x: auto; max-width: 100%; }
.cours-body th, .cours-body td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; vertical-align: top; }
.cours-body th { background: var(--paper); }
.formule, .exemple, .astuce, .piege, .methode { border-radius: 8px; padding: 12px 16px; margin: 14px 0; border-left: 5px solid; max-width: 78ch; }
.formule { background: #eef4fb; border-color: var(--accent); }
.exemple { background: var(--paper); border-color: var(--ink-3); }
.astuce { background: #fff8d6; border-color: #e0b400; }
.piege { background: var(--ko-bg); border-color: var(--ko); }
.methode { background: var(--ok-bg); border-color: var(--ok); }
.formule::before, .exemple::before, .astuce::before, .piege::before, .methode::before { display: block; font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 800; margin-bottom: 4px; opacity: .8; }
.formule::before { content: "Formule / règle"; } .exemple::before { content: "Exemple résolu"; } .astuce::before { content: "Astuce"; } .piege::before { content: "Piège"; } .methode::before { content: "Méthode"; }
span.piege { display: inline; padding: 0 4px; border: 0; margin: 0; background: var(--ko-bg); color: var(--ko); font-weight: 700; border-radius: 3px; }
span.piege::before { content: none; }
.cours-pager { display: flex; justify-content: space-between; gap: 10px; margin-top: 30px; padding-top: 16px; border-top: 1px solid var(--line); flex-wrap: wrap; }

/* ---------- session ---------- */
.session-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 14px; }
.timer { font-family: var(--font-mono); font-size: 1.3rem; font-weight: 700; padding: 6px 12px; border-radius: 8px; background: var(--paper-2); border: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.timer.low { color: var(--ko); border-color: var(--ko); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: .5; } }
.progress-dots { display: flex; gap: 4px; flex-wrap: wrap; }
.progress-dots button { width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--line); background: var(--paper-2); font-size: .72rem; font-family: var(--font-mono); color: var(--ink-3); padding: 0; }
.progress-dots button.answered { background: var(--ink); color: var(--paper-2); border-color: var(--ink); }
.progress-dots button.current { outline: 2px solid var(--marker); outline-offset: 1px; }
.progress-dots button.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.progress-dots button.ko { background: var(--ko); border-color: var(--ko); color: #fff; }
.progress-dots button.flag { box-shadow: inset 0 0 0 2px var(--warn); }
.question-card { padding: 22px 24px; }
.question-card .qmeta { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 10px; }
.question-card .qtext { font-size: 1.08rem; line-height: 1.6; margin: 8px 0 16px; }
.question-card .qtext u { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 3px; background: rgba(255, 228, 92, .35); }
.question-card .serie { font-family: var(--font-mono); font-size: 1.35rem; letter-spacing: .04em; padding: 12px 14px; background: var(--paper); border-radius: 8px; display: inline-block; }
.cm-infos { display: grid; gap: 8px; margin: 10px 0 16px; }
.cm-infos div { padding: 10px 14px; border: 1px dashed var(--ink-3); border-radius: 8px; background: var(--paper); }
.cm-infos b { font-family: var(--font-mono); color: var(--accent); margin-right: 6px; }
.choices { display: grid; gap: 8px; }
.choice { display: grid; grid-template-columns: 36px 1fr; gap: 12px; align-items: start; text-align: left; padding: 10px 14px; border: 1.5px solid var(--line); border-radius: 8px; background: var(--paper-2); color: var(--ink); line-height: 1.45; }
.choice:hover { border-color: var(--accent); }
.choice .l { width: 30px; height: 30px; border-radius: 50%; border: 2px solid var(--ink-2); display: inline-flex; align-items: center; justify-content: center; font-weight: 800; font-family: var(--font-mono); font-size: .9rem; }
.choice.selected { border-color: var(--ink); background: var(--paper); }
.choice.selected .l { background: var(--ink); color: var(--paper-2); border-color: var(--ink); }
.choice.correct { border-color: var(--ok); background: var(--ok-bg); }
.choice.correct .l { background: var(--ok); color: #fff; border-color: var(--ok); }
.choice.wrong { border-color: var(--ko); background: var(--ko-bg); }
.choice.wrong .l { background: var(--ko); color: #fff; border-color: var(--ko); }
.choice:disabled { cursor: default; }
.session-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; align-items: center; }
.correction { margin-top: 16px; border-top: 1px dashed var(--line); padding-top: 14px; }
.correction .verdict { font-weight: 700; margin-bottom: 8px; display: flex; gap: 8px; align-items: center; }
.correction .expl { background: var(--paper); border-left: 5px solid var(--accent); padding: 12px 16px; border-radius: 8px; line-height: 1.6; }
.intersection { display: inline-grid; grid-template-columns: repeat(5, minmax(56px, auto)); grid-template-rows: repeat(5, auto); gap: 6px; margin: 12px 0 16px; font-family: var(--font-mono); font-size: 1.05rem; }
.intersection .cell { padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; text-align: center; background: var(--paper-2); min-width: 56px; }
.intersection .cell.q { background: var(--marker); color: var(--marker-ink); font-weight: 800; }
.intersection .cell.empty { border: 0; background: transparent; }
.text-panel { max-height: 60vh; overflow: auto; padding: 16px 20px; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); line-height: 1.7; font-size: .98rem; }
.text-panel p { max-width: 75ch; }
.reading-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 900px) { .reading-layout { grid-template-columns: 1fr; } .text-panel { max-height: 40vh; } }

/* ---------- résultats ---------- */
.score-big { font-family: var(--font-display); font-size: 3rem; font-weight: 700; line-height: 1; font-variant-numeric: tabular-nums; }
.result-list { display: grid; gap: 10px; margin-top: 16px; }
.result-item { border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; background: var(--paper-2); }
.result-item summary { cursor: pointer; display: flex; gap: 10px; align-items: center; font-weight: 600; list-style: none; }
.result-item summary::-webkit-details-marker { display: none; }
.result-item .body { margin-top: 10px; }
table.hist { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.hist th, table.hist td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; }
table.hist th { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); }
.type-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; align-items: center; padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: .92rem; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 8px; box-shadow: var(--shadow); z-index: 50; }
kbd { font-family: var(--font-mono); background: var(--paper); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; padding: 0 5px; font-size: .8rem; }
.modal-bg { position: fixed; inset: 0; background: rgba(23,35,59,.55); display: flex; align-items: center; justify-content: center; z-index: 40; padding: 16px; }
.modal { background: var(--paper-2); border-radius: 12px; padding: 22px 24px; max-width: 520px; width: 100%; box-shadow: var(--shadow); }

/* ---------- séries spatiales ---------- */
.spatial-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 8px 0 16px; }
.spatial-row .frame { width: 110px; height: 110px; border: 2px solid var(--ink-2); border-radius: 8px; background: var(--paper-2); display: flex; align-items: center; justify-content: center; color: var(--ink); }
.spatial-row .frame svg { width: 96px; height: 96px; }
.spatial-row .frame.q { background: var(--marker); color: var(--marker-ink); font-size: 2.2rem; font-weight: 800; font-family: var(--font-mono); border-style: dashed; }
.choices.svg { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
.choices.svg .choice { grid-template-columns: 1fr; justify-items: center; gap: 6px; padding: 10px; }
.choices.svg .choice svg { width: 96px; height: 96px; color: var(--ink); }
.choices.svg .choice .l { order: 2; }