/* =========================================================
   PyQuest — feuille de style
   ========================================================= */

:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #eef2f8;
  --text: #18212f;
  --muted: #5b667a;
  --border: #dfe5ee;
  --primary: #3776ab;
  --primary-2: #2a5d88;
  --primary-soft: #e4eef8;
  --accent: #ffd43b;
  --accent-ink: #3b2f00;
  --ok: #15803d;
  --ok-soft: #e5f6eb;
  --ko: #c62828;
  --ko-soft: #fdeaea;
  --warn: #9a5b00;
  --warn-soft: #fff4dc;
  --lua: #3f3fb5;
  --lua-soft: #ececfb;
  --js: #8a5a00;
  --js-soft: #fef7d6;
  --code-bg: #1b2130;
  --code-ink: #e3e8f1;
  --code-muted: #8592a8;
  --code-border: #2c3445;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 28px rgba(16, 24, 40, .07);
  --sidebar-w: 292px;
  --topbar-h: 60px;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e131b;
    --surface: #151b26;
    --surface-2: #1c2432;
    --text: #e6ebf3;
    --muted: #9aa5b8;
    --border: #263042;
    --primary: #5ea6e4;
    --primary-2: #86bdee;
    --primary-soft: #182a3e;
    --ok: #4ade80;
    --ok-soft: #102a1c;
    --ko: #f87171;
    --ko-soft: #2f1618;
    --warn: #fbbf24;
    --warn-soft: #2b2210;
    --lua: #a5a7ff;
    --lua-soft: #1d1f3a;
    --js: #facc15;
    --js-soft: #29250f;
    --code-bg: #0a0e15;
    --code-border: #222b3a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 28px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0e131b;
  --surface: #151b26;
  --surface-2: #1c2432;
  --text: #e6ebf3;
  --muted: #9aa5b8;
  --border: #263042;
  --primary: #5ea6e4;
  --primary-2: #86bdee;
  --primary-soft: #182a3e;
  --ok: #4ade80;
  --ok-soft: #102a1c;
  --ko: #f87171;
  --ko-soft: #2f1618;
  --warn: #fbbf24;
  --warn-soft: #2b2210;
  --lua: #a5a7ff;
  --lua-soft: #1d1f3a;
  --js: #facc15;
  --js-soft: #29250f;
  --code-bg: #0a0e15;
  --code-border: #222b3a;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 28px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--topbar-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--primary); }
h1, h2, h3 { line-height: 1.25; letter-spacing: -.01em; }
code, pre, kbd { font-family: var(--mono); }
img { max-width: 100%; }
button { font: inherit; }
.muted { color: var(--muted); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--accent-ink); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--primary) 60%, transparent); outline-offset: 2px; }

/* ---------- Barre du haut ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  height: var(--topbar-h);
  display: flex; align-items: center; gap: 12px;
  padding: 0 16px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.logo { display: flex; align-items: center; gap: 8px; font-size: 1.2rem; color: var(--text); text-decoration: none; font-weight: 500; }
.logo strong { color: var(--primary); font-weight: 800; }
.logo-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), #4b8bbe 55%, var(--accent)); font-size: 1.1rem; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: inline-grid; place-items: center;
  width: 40px; height: 40px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  cursor: pointer; font-size: 1.05rem;
}
.icon-btn:hover { background: var(--surface-2); }
.burger { display: none; }
.xp-chip {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--primary-soft); color: var(--primary-2);
  font-weight: 700; font-size: .85rem; white-space: nowrap;
}

/* ---------- Mise en page ---------- */
.layout { display: grid; grid-template-columns: var(--sidebar-w) minmax(0, 1fr); min-height: calc(100vh - var(--topbar-h)); }
.sidebar {
  position: sticky; top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--surface);
  padding: 16px 12px 24px;
  display: flex; flex-direction: column;
}
main { padding: 32px clamp(16px, 4vw, 48px) 80px; width: 100%; max-width: 1240px; margin: 0 auto; outline: none; min-width: 0; }
.overlay { display: none; }

@media (max-width: 960px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .burger { display: inline-grid; }
  .sidebar {
    position: fixed; left: 0; top: var(--topbar-h); bottom: 0; height: auto;
    width: min(86vw, 320px);
    transform: translateX(-102%);
    transition: transform .25s ease;
    z-index: 60; box-shadow: var(--shadow);
  }
  body.menu-ouvert .sidebar { transform: none; }
  body.menu-ouvert .overlay { display: block; position: fixed; inset: var(--topbar-h) 0 0 0; background: rgba(0, 0, 0, .4); z-index: 55; }
  main { padding-top: 24px; }
}
@media (max-width: 600px) {
  .hide-mobile { display: none !important; }
  .xp-chip .xp-nom { display: none; }
}

/* ---------- Barre latérale ---------- */
.side-link, .side-chap {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 10px;
  color: var(--text); text-decoration: none; font-size: .93rem;
}
.side-link:hover, .side-chap:hover { background: var(--surface-2); }
.side-link.actif, .side-chap.actif { background: var(--primary-soft); color: var(--primary-2); font-weight: 600; }
.side-partie { margin: 18px 10px 6px; font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.side-num {
  flex: none; display: grid; place-items: center;
  width: 26px; height: 26px; border-radius: 8px;
  background: var(--surface-2); font-size: .78rem; font-weight: 700; color: var(--muted);
}
.side-chap.actif .side-num { background: var(--primary); color: #fff; }
.side-titre { flex: 1; min-width: 0; }
.ring {
  flex: none; width: 18px; height: 18px; border-radius: 50%;
  background: conic-gradient(var(--ok) calc(var(--p) * 1%), var(--border) 0);
  -webkit-mask: radial-gradient(circle, transparent 5px, #000 5.5px);
  mask: radial-gradient(circle, transparent 5px, #000 5.5px);
}
.ring.complet { -webkit-mask: none; mask: none; display: grid; place-items: center; background: var(--ok); color: #fff; font-size: .65rem; font-weight: 800; }
.side-foot { margin-top: auto; padding: 20px 10px 0; }
.lien-discret { background: none; border: 0; color: var(--muted); font-size: .8rem; cursor: pointer; text-decoration: underline; padding: 0; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 11px;
  border: 1px solid transparent;
  font-weight: 600; font-size: .95rem; line-height: 1.2;
  text-decoration: none; cursor: pointer;
  transition: transform .08s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px color-mix(in srgb, var(--primary) 35%, transparent); }
.btn-primary:hover:not(:disabled) { background: var(--primary-2); }
.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-accent:hover:not(:disabled) { filter: brightness(.96); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover:not(:disabled) { background: var(--surface-2); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover:not(:disabled) { background: var(--surface-2); }
.btn-sm { padding: 7px 12px; font-size: .85rem; border-radius: 9px; }
.btn-lg { padding: 13px 22px; font-size: 1rem; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

/* ---------- Cartes / génériques ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; background: var(--primary-soft); color: var(--primary-2); font-size: .82rem; font-weight: 600; }
.progress { height: 8px; background: var(--surface-2); border-radius: 99px; overflow: hidden; }
.progress > div { height: 100%; background: linear-gradient(90deg, var(--primary), var(--ok)); border-radius: inherit; transition: width .4s ease; }

/* ---------- Accueil ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 40px; align-items: center; margin-bottom: 40px; }
.hero h1 { font-size: clamp(2rem, 4.6vw, 3.2rem); margin: 16px 0; font-weight: 800; letter-spacing: -.025em; }
.hero p { font-size: 1.1rem; color: var(--muted); margin: 0 0 24px; max-width: 560px; }
.surligne { background: linear-gradient(transparent 60%, color-mix(in srgb, var(--accent) 70%, transparent) 60%); padding: 0 4px; }
.hero-code .code-block { box-shadow: 0 20px 60px rgba(20, 40, 80, .25); transform: rotate(-1deg); }
@media (max-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .hero-code .code-block { transform: none; }
}
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-bottom: 40px; }
.stat { padding: 18px 20px; }
.stat-label { font-size: .8rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.stat-valeur { font-size: 1.6rem; font-weight: 800; margin: 4px 0 8px; }
.stat-sous { font-size: .85rem; color: var(--muted); }
@media (max-width: 900px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 420px) { .stats { gap: 10px; } .stat { padding: 14px; } .stat-valeur { font-size: 1.3rem; } }

.etapes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-bottom: 48px; }
.etape { padding: 20px; }
.etape-icone { font-size: 1.6rem; }
.etape h3 { margin: 8px 0 4px; font-size: 1.05rem; }
.etape p { margin: 0; color: var(--muted); font-size: .93rem; }
@media (max-width: 760px) { .etapes { grid-template-columns: minmax(0, 1fr); } }

.partie { margin-bottom: 40px; }
.partie-titre { font-size: 1.4rem; margin: 0 0 4px; }
.partie-desc { color: var(--muted); margin: 0 0 18px; }
.chap-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.chap-card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 20px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  text-decoration: none; color: var(--text);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.chap-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.chap-card-top { display: flex; align-items: center; justify-content: space-between; }
.chap-card-icone { font-size: 1.7rem; }
.chap-card-num { font-size: .75rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.chap-card h3 { margin: 4px 0 0; font-size: 1.1rem; }
.chap-card p { margin: 0; color: var(--muted); font-size: .9rem; flex: 1; }
.chap-card-foot { display: flex; align-items: center; gap: 10px; font-size: .8rem; font-weight: 700; color: var(--muted); margin-top: 6px; }
.chap-card-foot .progress { flex: 1; }
.chap-card-meta { font-size: .8rem; color: var(--muted); }

/* ---------- En-tête de chapitre ---------- */
.chap-head { margin-bottom: 28px; }
.chap-kicker { font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--primary); }
.chap-head h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); margin: 6px 0 8px; font-weight: 800; }
.chap-resume { color: var(--muted); margin: 0 0 16px; max-width: 760px; font-size: 1.05rem; }
.chap-head .progress { max-width: 420px; margin-bottom: 20px; }
.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--border); overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tabs a {
  padding: 10px 16px; text-decoration: none; color: var(--muted); font-weight: 600; font-size: .95rem;
  border-bottom: 3px solid transparent; margin-bottom: -1px; white-space: nowrap;
}
.tabs a:hover { color: var(--text); }
.tabs a.actif { color: var(--primary); border-bottom-color: var(--primary); }
.count { display: inline-block; margin-left: 4px; padding: 1px 8px; border-radius: 99px; background: var(--surface-2); font-size: .78rem; }

/* ---------- Contenu des leçons ---------- */
.prose { max-width: 800px; }
.prose h2 { font-size: 1.5rem; margin: 2.2em 0 .6em; padding-top: .2em; }
.prose h2:first-child { margin-top: .5em; }
.prose h3 { font-size: 1.15rem; margin: 1.6em 0 .5em; }
.prose p, .prose li { font-size: 1.02rem; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin: .3em 0; }
.prose :not(pre) > code, .quiz-q :not(pre) > code, .quiz-opt code, .indice code, .tests code {
  background: var(--surface-2); border: 1px solid var(--border);
  padding: .08em .38em; border-radius: 6px; font-size: .88em;
  overflow-wrap: anywhere;
}
.prose pre, .quiz-q pre {
  background: var(--code-bg); color: var(--code-ink);
  padding: 14px 16px; border-radius: var(--radius-sm);
  overflow-x: auto; font-size: .88rem; line-height: 1.6;
}
.prose table { width: 100%; border-collapse: collapse; font-size: .93rem; margin: 1em 0; }
.table-wrap { overflow-x: auto; margin: 1em 0; border: 1px solid var(--border); border-radius: var(--radius-sm); }
.table-wrap table { margin: 0; }
.prose th, .prose td { padding: 9px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.prose th { background: var(--surface-2); font-weight: 700; }
.prose tr:last-child td { border-bottom: 0; }

.callout { border-radius: var(--radius-sm); padding: 14px 18px; margin: 1.3em 0; border: 1px solid; }
.callout > div > p:first-child { margin-top: 0; }
.callout > div > p:last-child, .callout > div > ul:last-child, .callout > div > ol:last-child { margin-bottom: 0; }
.callout-titre { font-weight: 700; margin-bottom: 6px; }
.callout .code-block { margin: 12px 0 2px; }
.callout-tip { background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 30%, transparent); }
.callout-tip .callout-titre { color: var(--ok); }
.callout-warn { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }
.callout-warn .callout-titre { color: var(--warn); }
.callout-lua { background: var(--lua-soft); border-color: color-mix(in srgb, var(--lua) 30%, transparent); }
.callout-lua .callout-titre { color: var(--lua); }
.callout-js { background: var(--js-soft); border-color: color-mix(in srgb, var(--js) 30%, transparent); }
.callout-js .callout-titre { color: var(--js); }

/* ---------- Blocs de code ---------- */
.code-block { background: var(--code-bg); border: 1px solid var(--code-border); border-radius: var(--radius-sm); overflow: hidden; margin: 1em 0; }
.code-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 6px 8px 6px 14px; border-bottom: 1px solid var(--code-border); }
.code-lang { font-family: var(--mono); font-size: .75rem; color: var(--code-muted); text-transform: lowercase; }
.code-actions { display: flex; gap: 6px; }
.mini-btn {
  border: 1px solid var(--code-border); background: transparent; color: var(--code-ink);
  font-size: .75rem; padding: 4px 10px; border-radius: 7px; cursor: pointer;
}
.mini-btn:hover { background: rgba(255, 255, 255, .08); }
.mini-btn-accent { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }
.mini-btn-accent:hover { background: #ffdf6b; }
.code-block pre { margin: 0; padding: 14px 16px; overflow-x: auto; font-size: .88rem; line-height: 1.6; color: var(--code-ink); background: transparent; border-radius: 0; }
.code-block code { background: none !important; padding: 0; }

/* Coloration highlight.js (thème maison) */
.hljs { color: var(--code-ink); background: transparent; }
.hljs-keyword, .hljs-selector-tag, .hljs-literal { color: #c792ea; }
.hljs-built_in, .hljs-type { color: #ffcb6b; }
.hljs-string, .hljs-regexp { color: #c3e88d; }
.hljs-number { color: #f78c6c; }
.hljs-comment, .hljs-quote { color: #7a869c; font-style: italic; }
.hljs-title, .hljs-title.function_, .hljs-section { color: #82aaff; }
.hljs-title.class_ { color: #ffcb6b; }
.hljs-params { color: #e3e8f1; }
.hljs-meta, .hljs-decorator { color: #ffcb6b; }
.hljs-subst { color: #e3e8f1; }
.hljs-operator, .hljs-punctuation { color: #89ddff; }
.hljs-variable, .hljs-attr { color: #f07178; }

/* ---------- Fin de leçon / navigation ---------- */
.fin-lecon { margin: 48px 0 24px; max-width: 800px; }
.fin-lecon p { margin: 0 0 14px; }
.nav-chap { display: flex; justify-content: space-between; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.nav-chap a { flex: 1 1 220px; max-width: 380px; padding: 14px 18px; border: 1px solid var(--border); border-radius: var(--radius); text-decoration: none; color: var(--text); background: var(--surface); }
.nav-chap a:hover { border-color: var(--primary); }
.nav-chap .suiv { text-align: right; margin-left: auto; }
.nav-chap small { display: block; color: var(--muted); font-size: .78rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }

/* ---------- Quiz ---------- */
.quiz { max-width: 800px; display: grid; gap: 18px; }
.quiz-q { padding: 22px; }
.quiz-num { font-size: .78rem; font-weight: 700; color: var(--primary); text-transform: uppercase; letter-spacing: .06em; }
.quiz-enonce { font-weight: 600; font-size: 1.05rem; margin: 6px 0 14px; }
.quiz-opts { display: grid; gap: 8px; }
.quiz-opt {
  text-align: left; padding: 11px 14px; border-radius: 10px;
  border: 1.5px solid var(--border); background: var(--surface); color: var(--text);
  cursor: pointer; font-size: .97rem; display: flex; gap: 10px; align-items: flex-start;
}
.quiz-opt:hover:not(:disabled) { border-color: var(--primary); background: var(--primary-soft); }
.quiz-opt:disabled { cursor: default; }
.quiz-lettre { flex: none; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 7px; background: var(--surface-2); font-size: .78rem; font-weight: 700; }
.quiz-opt.bonne { border-color: var(--ok); background: var(--ok-soft); }
.quiz-opt.bonne .quiz-lettre { background: var(--ok); color: #fff; }
.quiz-opt.mauvaise { border-color: var(--ko); background: var(--ko-soft); }
.quiz-opt.mauvaise .quiz-lettre { background: var(--ko); color: #fff; }
.quiz-expl { margin-top: 12px; padding: 12px 14px; border-radius: 10px; background: var(--surface-2); font-size: .95rem; }
.quiz-score { text-align: center; padding: 28px; }
.quiz-score .gros { font-size: 2.6rem; font-weight: 800; }

/* ---------- Exercices ---------- */
.ex-nav { display: flex; gap: 8px; flex-wrap: wrap; margin: 4px 0 20px; }
.pill {
  display: grid; place-items: center; min-width: 38px; height: 38px; padding: 0 10px;
  border-radius: 10px; border: 1.5px solid var(--border); background: var(--surface);
  text-decoration: none; color: var(--text); font-weight: 700; font-size: .9rem;
}
.pill:hover { border-color: var(--primary); }
.pill.ok { background: var(--ok-soft); border-color: var(--ok); color: var(--ok); }
.pill.actif { background: var(--primary); border-color: var(--primary); color: #fff; }
.ex-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 20px; align-items: start; }
@media (max-width: 1100px) { .ex-grid { grid-template-columns: minmax(0, 1fr); } }
.ex-enonce h2 { margin: 6px 0 12px; font-size: 1.3rem; }
.ex-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: .82rem; }
.tag { padding: 3px 10px; border-radius: 99px; font-weight: 700; background: var(--surface-2); color: var(--muted); }
.tag-n1 { background: var(--ok-soft); color: var(--ok); }
.tag-n2 { background: var(--warn-soft); color: var(--warn); }
.tag-n3 { background: var(--ko-soft); color: var(--ko); }
.tag-ok { background: var(--ok); color: #fff; }
.ex-enonce .prose { font-size: .98rem; }
.ex-enonce .prose p:first-child { margin-top: 0; }
.ex-actions-sec { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.indices { display: grid; gap: 8px; margin-top: 14px; }
.indice { padding: 10px 14px; border-radius: 10px; background: var(--warn-soft); border: 1px solid color-mix(in srgb, var(--warn) 25%, transparent); font-size: .93rem; animation: apparait .25s ease; }
.indice strong { color: var(--warn); }

.ex-code { min-width: 0; }
.editor-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; font-family: var(--mono); font-size: .82rem; color: var(--muted); }
.py-status { font-family: var(--font); font-size: .8rem; font-weight: 600; }
.editor { border: 1px solid var(--code-border); border-radius: var(--radius-sm); overflow: hidden; background: var(--code-bg); }
.editor .CodeMirror { height: auto; font-family: var(--mono); font-size: 14px; line-height: 1.6; background: var(--code-bg); color: var(--code-ink); }
.editor .CodeMirror-scroll { min-height: 240px; max-height: 62vh; }
.editor .CodeMirror-gutters { background: var(--code-bg); border-right: 1px solid var(--code-border); }
.editor .CodeMirror-linenumber { color: #56627a; }
.editor .CodeMirror-cursor { border-left: 2px solid var(--accent); }
.editor .CodeMirror-selected { background: #2b3850; }
.editor .CodeMirror-focused .CodeMirror-selected, .editor .CodeMirror-line::selection, .editor .CodeMirror-line > span::selection { background: #34507a; }
.editor .CodeMirror-activeline-background { background: rgba(255, 255, 255, .03); }
.editor .CodeMirror-matchingbracket { color: #fff !important; background: #3b4a63; }
.editor .cm-keyword { color: #c792ea; }
.editor .cm-def { color: #82aaff; }
.editor .cm-builtin, .editor .cm-variable-2 { color: #ffcb6b; }
.editor .cm-string { color: #c3e88d; }
.editor .cm-number { color: #f78c6c; }
.editor .cm-comment { color: #7a869c; font-style: italic; }
.editor .cm-operator { color: #89ddff; }
.editor .cm-property { color: #82aaff; }
.editor .cm-meta { color: #ffcb6b; }
.editor .cm-variable { color: var(--code-ink); }
.editor-fallback {
  width: 100%; min-height: 260px; border: 0; resize: vertical; padding: 14px 16px;
  background: var(--code-bg); color: var(--code-ink); font-family: var(--mono); font-size: 14px; line-height: 1.6; tab-size: 4;
}
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 12px 0; }
.kbd-hint { font-size: .78rem; color: var(--muted); margin-left: auto; }
@media (max-width: 600px) { .kbd-hint { display: none; } }

.console { border-radius: var(--radius-sm); overflow: hidden; border: 1px solid var(--code-border); background: var(--code-bg); }
.console-head { display: flex; justify-content: space-between; align-items: center; padding: 7px 14px; font-family: var(--mono); font-size: .75rem; color: var(--code-muted); border-bottom: 1px solid var(--code-border); }
.console-body { padding: 12px 16px; min-height: 90px; max-height: 360px; overflow: auto; font-family: var(--mono); font-size: .86rem; color: var(--code-ink); }
.console-body pre { margin: 0; white-space: pre-wrap; word-break: break-word; font-family: inherit; }
.console-body .err { color: #ff8a80; }
.console-body .muted { color: var(--code-muted); }

.tests { margin-bottom: 12px; }
.tests-box { padding: 14px 16px; border-radius: var(--radius-sm); border: 1px solid; animation: apparait .25s ease; }
.tests-box strong { display: block; margin-bottom: 4px; }
.tests-box pre { margin: 6px 0 0; white-space: pre-wrap; font-size: .85rem; font-family: var(--mono); }
.tests-ok { background: var(--ok-soft); border-color: var(--ok); }
.tests-ok strong { color: var(--ok); font-size: 1.05rem; }
.tests-ko { background: var(--ko-soft); border-color: color-mix(in srgb, var(--ko) 50%, transparent); }
.tests-ko strong { color: var(--ko); }

.correction { margin-top: 24px; animation: apparait .3s ease; }
.correction h2 { margin-top: 0; }
.correction h3 { margin-top: 20px; }
.ex-footer { display: flex; justify-content: space-between; gap: 10px; margin-top: 28px; flex-wrap: wrap; }

/* ---------- Bac à sable ---------- */
.page-head h1 { font-size: clamp(1.7rem, 4vw, 2.3rem); margin: 0 0 6px; }
.page-head p { color: var(--muted); margin: 0 0 24px; max-width: 760px; }
.bac-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 20px; align-items: start; }
@media (max-width: 1000px) { .bac-grid { grid-template-columns: minmax(0, 1fr); } }
.select { padding: 6px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font: inherit; font-size: .85rem; max-width: 100%; }
.entrees { margin-top: 14px; }
.entrees summary { cursor: pointer; font-weight: 600; font-size: .92rem; }
.entrees textarea {
  width: 100%; min-height: 90px; margin-top: 8px; padding: 10px 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface); color: var(--text); font-family: var(--mono); font-size: .86rem; resize: vertical;
}
.entrees p { font-size: .85rem; color: var(--muted); margin: 6px 0 0; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, calc(100% + 40px));
  background: var(--text); color: var(--bg);
  padding: 12px 20px; border-radius: 12px; font-weight: 600; font-size: .95rem;
  box-shadow: var(--shadow); z-index: 100; max-width: calc(100vw - 32px); text-align: center;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: transform .3s ease, opacity .3s ease, visibility .3s;
}
.toast.visible { transform: translate(-50%, 0); opacity: 1; visibility: visible; }

@keyframes apparait { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }

/* ---------- Account: login, sign-up, profile ---------- */
.account-chip {
  display: inline-flex; align-items: center; gap: 6px; max-width: 160px;
  padding: 6px 12px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); text-decoration: none; font-weight: 600; font-size: .85rem;
}
.account-chip:hover { background: var(--surface-2); }
.account-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

.auth-card { max-width: 440px; margin: 0 auto 20px; }
.auth-card h1 { margin-top: 0; font-size: 1.6rem; }
.auth-card h2 { margin-top: 0; font-size: 1.15rem; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.field label { font-weight: 600; font-size: .92rem; }
.field input {
  font: inherit; color: var(--text); background: var(--bg);
  padding: 11px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  width: 100%; min-width: 0;
}
.field input:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary); }
.field-hint { color: var(--muted); font-size: .82rem; }
.form-error {
  margin-bottom: 16px; padding: 10px 12px; border-radius: var(--radius-sm);
  background: var(--ko-soft); color: var(--ko); font-size: .9rem; font-weight: 500;
}
.btn-block { width: 100%; justify-content: center; }
.btn-danger { background: var(--ko); color: #fff; }
.btn-danger:hover:not(:disabled) { filter: brightness(.92); }
.auth-switch { margin: 18px 0 0; text-align: center; color: var(--muted); font-size: .92rem; }
.account-info { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 10px 16px; margin: 0 0 22px; }
.account-info dt { color: var(--muted); font-size: .9rem; }
.account-info dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.danger-zone { border-color: color-mix(in srgb, var(--ko) 35%, var(--border)); }
@media (max-width: 600px) {
  .account-chip { max-width: 44px; padding: 6px 10px; }
  .account-chip .account-name { display: none; }
  .login-btn { width: 40px; height: 40px; padding: 0; }
  .login-btn .login-label { display: none; }
}
/* Small phones (360-420 px): tighten the top bar so every control stays on screen. */
@media (max-width: 420px) {
  .topbar { gap: 8px; padding: 0 12px; }
  .topbar-right { gap: 6px; }
  .topbar .icon-btn, .login-btn { width: 36px; height: 36px; }
  .xp-chip { padding: 6px 10px; }
  .account-chip { padding: 6px 8px; }
}
@media (max-width: 359px) {
  .logo > span:not(.logo-icon) { display: none; }
}