/* ============================================================
   Cours Arthur — feuille de style (mobile-first, dyslexie-friendly)
   ============================================================ */
:root{
  --bg:#0f172a; --bg2:#1e293b; --card:#ffffff; --ink:#0f172a; --muted:#64748b;
  --line:#e2e8f0; --primary:#2563eb; --ok:#16a34a; --bad:#dc2626; --review:#0ea5e9;
  --radius:16px; --shadow:0 6px 24px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; font-family:'Lexend',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink); background:#f1f5f9; line-height:1.55;
  letter-spacing:.01em; word-spacing:.04em;
  padding-bottom:env(safe-area-inset-bottom);
}
h1,h2,h3{line-height:1.2;margin:.2em 0 .4em}
h1{font-size:1.6rem} h2{font-size:1.25rem}
a{color:inherit;text-decoration:none}
.muted{color:var(--muted)} .small{font-size:.85rem}
.wrap{max-width:880px;margin:0 auto;padding:18px 16px 60px}

/* ---------- Topbar ---------- */
.topbar{position:sticky;top:0;z-index:20;background:var(--bg);color:#fff;
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;gap:12px;padding-top:calc(12px + env(safe-area-inset-top))}
.brand{font-weight:700;font-size:1.05rem}
.topnav{display:flex;align-items:center;gap:14px;font-size:.95rem}
.topnav a{color:#cbd5e1} .topnav a:hover{color:#fff}
.topnav .who{color:#fff;font-weight:600;display:none}
.topnav .logout{color:#fca5a5}
@media(min-width:560px){.topnav .who{display:inline}}

/* ---------- Boutons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;border-radius:999px;padding:14px 22px;font-family:inherit;
  font-size:1.05rem;font-weight:600;cursor:pointer;width:100%;text-align:center;
  transition:transform .06s ease, filter .15s ease}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--primary);color:#fff}
.btn-review{background:var(--review);color:#fff;margin:8px 0 4px}
.btn-ghost{background:#fff;color:var(--ink);border:2px solid var(--line)}
.btn-ok{background:var(--ok);color:#fff}
@media(min-width:560px){.btn{width:auto}}

/* ---------- Login ---------- */
.login-screen{min-height:100vh;display:grid;place-items:center;
  background:radial-gradient(1200px 600px at 50% -10%,#1e293b,#0f172a)}
.login-card{background:#fff;border-radius:24px;padding:32px 26px;width:min(380px,92vw);
  text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.login-logo{font-size:2.6rem}
.login-form{display:grid;gap:14px;margin-top:16px;text-align:left}
.login-form label{font-weight:600;font-size:.9rem;display:grid;gap:6px}
.login-form input{padding:14px;border:2px solid var(--line);border-radius:12px;font-size:1.05rem;font-family:inherit}
.login-form input:focus{outline:none;border-color:var(--primary)}
.flash{background:#fef2f2;color:#991b1b;border:1px solid #fecaca;
  padding:12px 14px;border-radius:12px;margin-bottom:14px;font-weight:500}

/* ---------- Tableau de bord élève ---------- */
.hero-eleve{background:linear-gradient(135deg,#1e293b,#0f172a);color:#fff;
  border-radius:var(--radius);padding:22px;margin-bottom:18px}
.hero-eleve h1{margin-top:0}
.stat-row{display:flex;gap:10px;margin:14px 0}
.stat{background:rgba(255,255,255,.08);border-radius:12px;padding:10px 12px;flex:1;text-align:center}
.stat b{display:block;font-size:1.5rem} .stat span{font-size:.78rem;color:#cbd5e1}
.section-title{margin:22px 0 10px}
.subjects-grid{display:grid;gap:14px;grid-template-columns:1fr}
@media(min-width:560px){.subjects-grid{grid-template-columns:1fr 1fr}}
.subject-card{background:var(--card);border-radius:var(--radius);padding:16px;
  box-shadow:var(--shadow);display:flex;gap:14px;align-items:center;
  border-left:6px solid var(--c)}
.subject-emoji{font-size:2rem;line-height:1} .subject-emoji.big{font-size:2.6rem}
.subject-body{flex:1;min-width:0}
.subject-body h3{margin:.1em 0} .subject-body p{margin:.1em 0;font-size:.85rem}
.progress{height:10px;background:var(--line);border-radius:999px;overflow:hidden;margin:8px 0 4px}
.progress.big{height:14px}
.progress span{display:block;height:100%;background:var(--c,var(--primary));border-radius:999px;transition:width .4s}

/* ---------- Matière / modules ---------- */
.back{display:inline-block;color:var(--muted);margin-bottom:10px;font-weight:500}
.subject-head{display:flex;gap:16px;align-items:center;background:#fff;
  border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);
  border-left:6px solid var(--c);margin-bottom:14px}
.subject-head h1{margin:0}
.module-list{list-style:none;padding:0;margin:14px 0;display:grid;gap:12px}
.module-row{display:flex;align-items:center;gap:14px;background:#fff;
  border-radius:14px;padding:16px;box-shadow:var(--shadow)}
.module-row.locked{opacity:.6}
.mnum{width:38px;height:38px;border-radius:999px;background:#eef2ff;color:var(--primary);
  display:grid;place-items:center;font-weight:700;flex:none}
.status-done .mnum{background:#dcfce7}
.minfo{flex:1;min-width:0} .minfo b{display:block} .minfo small{color:var(--muted)}
.mgo{color:var(--primary);font-weight:600;font-size:.9rem;flex:none}

/* ---------- Quiz ---------- */
.quiz{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);
  padding:18px;margin-top:6px}
.review-title{margin-top:0}
.quiz-top{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.qbar{flex:1;height:12px;background:var(--line);border-radius:999px;overflow:hidden}
.qbar span{display:block;height:100%;width:0;background:var(--c,var(--primary));transition:width .35s}
.qstep{font-size:.85rem;color:var(--muted);font-weight:600;white-space:nowrap}
.quiz-stage{min-height:260px}
.loading{color:var(--muted);text-align:center;padding:40px}

.lesson-card h3{margin-top:0}
.lesson-card .lesson-body{font-size:1.05rem}
.lesson-card ul,.lesson-card ol{padding-left:1.2em}

.qprompt{font-size:1.35rem;font-weight:600;margin:6px 0 18px}
.answer-input{width:100%;padding:16px;border:2px solid var(--line);border-radius:14px;
  font-size:1.3rem;font-family:inherit;text-align:center}
.answer-input:focus{outline:none;border-color:var(--c,var(--primary))}
.choices{display:grid;gap:10px}
.choice{padding:16px;border:2px solid var(--line);border-radius:14px;background:#fff;
  font-size:1.15rem;font-family:inherit;cursor:pointer;text-align:left}
.choice:hover{border-color:var(--c,var(--primary))}
.choice.sel{border-color:var(--c,var(--primary));background:#eff6ff}
.hint{margin:12px 0;color:var(--muted);font-size:.92rem}
.hint button{background:none;border:none;color:var(--primary);font-family:inherit;
  font-size:.92rem;cursor:pointer;text-decoration:underline;padding:0}
.quiz-actions{margin-top:18px}

/* Feedback */
.feedback{margin-top:16px;border-radius:14px;padding:16px;font-size:1.05rem}
.feedback.ok{background:#f0fdf4;border:2px solid #bbf7d0;color:#166534}
.feedback.bad{background:#fef2f2;border:2px solid #fecaca;color:#991b1b}
.feedback b{display:block;margin-bottom:4px;font-size:1.1rem}
.feedback .corr{font-weight:600}

/* Écran de fin */
.quiz-end{text-align:center;padding:20px 6px}
.quiz-end .big-emoji,.big-emoji{font-size:3.4rem}
.score-ring{font-size:2.2rem;font-weight:700;margin:10px 0}
.quiz-end .btn{margin-top:10px}

/* ---------- Suivi parent/prof ---------- */
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}
@media(min-width:560px){.kpis{grid-template-columns:repeat(4,1fr)}}
.kpi{background:#fff;border-radius:14px;padding:14px;text-align:center;box-shadow:var(--shadow)}
.kpi b{display:block;font-size:1.6rem} .kpi span{font-size:.8rem;color:var(--muted)}
.card{background:#fff;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin:14px 0}
.card h2{margin-top:0}
.spark{display:flex;align-items:flex-end;gap:4px;height:90px;margin:10px 0}
.spark-col{flex:1;background:#eef2ff;border-radius:6px 6px 0 0;display:flex;align-items:flex-end;height:100%}
.spark-col span{display:block;width:100%;background:var(--primary);border-radius:6px 6px 0 0;min-height:3px}
.suivi-grid{display:grid;gap:14px;grid-template-columns:1fr}
@media(min-width:560px){.suivi-grid{grid-template-columns:1fr 1fr}}
.subject-suivi{border-left:6px solid var(--c)}
.ss-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.ss-head b{flex:1} .ss-frac{color:var(--muted);font-weight:600}
.ss-mods{list-style:none;padding:0;margin:10px 0 0;font-size:.9rem;display:grid;gap:6px}
.ss-mods li{display:flex;align-items:center;gap:8px}
.ss-mods em{color:var(--muted);font-style:normal;font-size:.82rem}
.dot{width:10px;height:10px;border-radius:999px;background:var(--line);flex:none}
.dot.ok{background:var(--ok)} .dot.wip{background:#f59e0b}
.note{margin-top:18px}
.empty-review{text-align:center;padding:40px 10px}

/* Drapeaux SVG dans les pastilles matière */
.subject-emoji svg{display:inline-block;width:1.7em;height:auto;vertical-align:middle}
.subject-emoji.big svg{width:2.2em}

/* ---------- Rapport parent/prof (écran "waouh") ---------- */
.report-hero{background:linear-gradient(135deg,#312e81,#0f172a);color:#fff;
  border-radius:var(--radius);padding:24px 22px;margin-bottom:16px;box-shadow:var(--shadow)}
.report-badge{display:inline-block;font-size:.72rem;letter-spacing:.12em;font-weight:700;
  background:rgba(255,255,255,.14);padding:5px 12px;border-radius:999px}
.report-hero h1{margin:.35em 0 .1em;font-size:1.9rem}
.report-hero__top p{color:#c7d2fe;margin:.2em 0 0;font-size:.95rem}
.report-bigstats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
.report-bigstats div{background:rgba(255,255,255,.08);border-radius:14px;padding:14px 10px;text-align:center}
.report-bigstats b{display:block;font-size:1.5rem;line-height:1.1}
.report-bigstats span{font-size:.74rem;color:#c7d2fe}
@media(max-width:480px){.report-bigstats b{font-size:1.2rem}}
.ss-meta{display:flex;justify-content:space-between;font-size:.85rem;color:var(--muted);margin-top:8px;font-weight:600}
.parent-note ul{padding-left:1.1em;margin:.6em 0}
.parent-note li{margin:.4em 0}
.pn-lead{font-size:1.05rem;font-weight:600;color:#312e81;margin:0 0 .4em}

/* Avertissement anti-triche (élève) */
.focus-warn{display:none;background:#fef2f2;color:#991b1b;border:2px solid #fecaca;
  border-radius:12px;padding:10px 14px;margin-bottom:12px;font-size:.92rem;font-weight:500}

/* Sélecteur de période du graphique */
.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.card-head h2{margin:0}
.range-toggle{display:flex;gap:6px}
.range-toggle a{font-size:.85rem;font-weight:600;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px}
.range-toggle a.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Carte anti-triche (prof) */
.focus-card{border-left:5px solid #f59e0b}
.focus-card h2{margin-top:0}
.focus-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:10px 0 6px}
.focus-stats div{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:12px 8px;text-align:center}
.focus-stats b{display:block;font-size:1.5rem;color:#b45309}
.focus-stats span{font-size:.72rem;color:#92400e}