:root{
  --bg:#0b1119;--panel:#121c28;--panel2:#182535;--line:rgba(255,255,255,.11);--text:#f4f7fb;--muted:#9fb0c4;
  --gold:#f5c54d;--gold2:#ffdf87;--red:#ff6d6d;--green:#67d79c;--blue:#76b7ff;--shadow:0 24px 70px rgba(0,0,0,.42);
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:radial-gradient(circle at 50% 0,#1d3047 0,#0b1119 48%,#080c12 100%);color:var(--text);font-family:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif}
button,input,select,textarea{font:inherit}
button,a{touch-action:manipulation}
.classroom-body{min-height:100vh}
.classroom-app{min-height:100vh}
[hidden]{display:none!important}
.class-kicker{font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;font-weight:900;color:var(--gold)}
.count-badge{display:inline-grid;place-items:center;min-width:30px;height:30px;padding:0 9px;border-radius:999px;background:rgba(245,197,77,.13);border:1px solid rgba(245,197,77,.3);color:var(--gold2);font-weight:900}
.class-btn{border:1px solid var(--line);border-radius:14px;padding:11px 15px;background:rgba(255,255,255,.055);color:var(--text);font-weight:850;cursor:pointer;transition:.16s ease;line-height:1.1}
.class-btn:hover{transform:translateY(-1px);border-color:rgba(255,255,255,.25);background:rgba(255,255,255,.09)}
.class-btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.class-btn-primary{background:linear-gradient(180deg,#f3c64d,#dca72c);border-color:#f8d978;color:#1f190c;box-shadow:0 7px 22px rgba(218,167,44,.18)}
.class-btn-accent{background:linear-gradient(180deg,#f0774a,#d65335);border-color:#ff9871;color:#fff}
.class-btn-secondary{border-color:rgba(118,183,255,.42);background:rgba(118,183,255,.09)}
.class-btn-danger{border-color:rgba(255,109,109,.42);color:#ffd4d4;background:rgba(255,109,109,.07)}
.class-btn-ghost{background:transparent}
.class-btn-small{padding:7px 10px;font-size:.78rem}
.class-btn-large{min-height:54px;font-size:1.03rem;padding-inline:24px}
.class-btn-wide{width:100%}
.class-feedback{min-height:1.25em;color:#ffe39a;margin:8px 0 0;font-size:.86rem}
.class-feedback.error{color:#ffaaaa}
.class-feedback.success{color:#99e5b8}

/* Connexion */
.class-login-screen{min-height:100vh;display:grid;place-items:center;padding:20px}
.class-login-card{width:min(560px,94vw);padding:clamp(26px,6vw,46px);border:1px solid var(--line);border-radius:32px;background:linear-gradient(180deg,rgba(21,33,48,.97),rgba(9,15,23,.98));box-shadow:var(--shadow);text-align:center}
.class-logo{width:min(350px,78vw);max-height:118px;object-fit:contain;margin:0 auto 4px;display:block}
.class-login-card h1{font-size:clamp(2rem,7vw,3.5rem);margin:8px 0 8px}
.class-login-copy{color:var(--muted);line-height:1.55;margin:0 auto 22px;max-width:46ch}
.class-login-form{display:grid;grid-template-columns:1fr auto;gap:10px}
.class-login-form input{min-width:0;text-align:center;text-transform:uppercase;letter-spacing:.16em;font-weight:900;font-size:1.18rem;padding:15px;border-radius:15px;border:1px solid rgba(255,255,255,.16);background:#09111c;color:#fff;outline:none}
.class-login-form input:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(245,197,77,.12)}
.class-login-links{display:flex;justify-content:space-between;gap:14px;align-items:center;margin-top:24px;font-size:.78rem;color:#8396ad;text-align:left}
.class-login-links a{color:#d9e7f6;text-decoration:none;font-weight:800}

/* Prof */
.class-topbar,.student-topbar,.live-header{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:18px clamp(18px,3vw,36px);border-bottom:1px solid var(--line);background:rgba(7,12,18,.78);backdrop-filter:blur(14px);position:sticky;top:0;z-index:20}
.class-topbar h1,.student-topbar h1,.live-header h1{margin:3px 0 0;font-size:clamp(1.3rem,3vw,2rem)}
.class-topbar-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.teacher-layout{display:grid;grid-template-columns:minmax(260px,320px) 1fr;min-height:calc(100vh - 83px)}
.teacher-sidebar{padding:24px 18px;border-right:1px solid var(--line);background:rgba(11,18,27,.72)}
.teacher-sidebar-heading,.teacher-section-heading,.student-section-heading{display:flex;justify-content:space-between;gap:12px;align-items:center}
.teacher-sidebar-heading h2,.teacher-section-heading h3,.student-section-heading h2{margin:0}
.teacher-create-class{display:grid;grid-template-columns:1fr auto;gap:8px;margin:14px 0 18px}
.teacher-create-class input,.editor-grid input,.editor-grid select,.picker-config-grid input,.picker-config-grid select,.picker-filters select,.picker-filters input,.student-identity-form input{min-width:0;width:100%;border:1px solid rgba(255,255,255,.14);border-radius:12px;background:#0b1420;color:#fff;padding:11px 12px;outline:none}
.teacher-create-class input:focus,.editor-grid input:focus,.picker-filters input:focus,.student-identity-form input:focus,textarea:focus,select:focus{border-color:rgba(245,197,77,.7);box-shadow:0 0 0 3px rgba(245,197,77,.1)}
.teacher-class-list{display:grid;gap:8px}
.teacher-class-item{width:100%;display:grid;gap:3px;text-align:left;border:1px solid var(--line);border-radius:15px;padding:12px;background:rgba(255,255,255,.04);color:#fff;cursor:pointer}
.teacher-class-item.selected{border-color:rgba(245,197,77,.65);background:rgba(245,197,77,.09)}
.teacher-class-item strong{font-size:.97rem}.teacher-class-item span{font-size:.76rem;color:var(--muted)}
.teacher-library-block{margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
.teacher-library-block p{font-size:.78rem;line-height:1.45;color:var(--muted)}
.teacher-main{padding:clamp(20px,4vw,40px);overflow:hidden}
.teacher-empty-state{min-height:64vh;display:grid;place-items:center;align-content:center;text-align:center;color:var(--muted);max-width:620px;margin:auto}
.teacher-empty-state h2{color:#fff;margin:10px 0 3px}.teacher-empty-state p{max-width:50ch;line-height:1.55}.teacher-empty-icon{font-size:4rem}
.teacher-class-hero{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(135deg,rgba(245,197,77,.09),rgba(118,183,255,.07))}
.teacher-class-hero h2{font-size:clamp(1.8rem,4vw,3rem);margin:4px 0 4px}.teacher-class-hero p{margin:0;color:var(--muted)}
.teacher-class-code-card{min-width:190px;text-align:center;padding:15px 18px;border-radius:18px;background:#0a131f;border:1px solid rgba(245,197,77,.3)}
.teacher-class-code-card span{display:block;color:var(--muted);font-size:.76rem}.teacher-class-code-card strong{display:block;font-size:1.7rem;letter-spacing:.16em;color:var(--gold2);margin:4px 0 8px}
.teacher-quick-actions{display:flex;flex-wrap:wrap;gap:9px;margin:15px 0 28px}
.teacher-section,.student-section{margin-top:28px}
.teacher-card-list,.student-card-list{display:grid;gap:10px;margin-top:12px}
.teacher-card,.student-card{border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.045);padding:15px;display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center}
.teacher-card-main h4,.student-card h3{margin:0 0 5px;font-size:1rem}.teacher-card-main p,.student-card p{margin:0;color:var(--muted);font-size:.8rem;line-height:1.45}
.teacher-card-actions,.student-card-actions{display:flex;flex-wrap:wrap;gap:7px;justify-content:flex-end}
.status-pill{display:inline-block;border-radius:999px;padding:4px 8px;font-size:.7rem;font-weight:900;margin-right:6px;border:1px solid var(--line)}
.status-draft{color:#c9d4e0}.status-waiting{color:#ffe495;border-color:rgba(245,197,77,.4)}.status-live{color:#ffb3a4;border-color:rgba(255,105,75,.5)}.status-finished{color:#9ee2b8;border-color:rgba(103,215,156,.4)}

/* Eleve */
.student-screen{min-height:100vh}.student-topbar{position:relative}
.student-identity-panel{width:min(650px,92vw);margin:clamp(30px,8vw,80px) auto;padding:28px;border-radius:24px;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow)}
.student-identity-panel h2{margin-top:0}.student-identity-panel p{color:var(--muted)}
.student-identity-form{display:grid;grid-template-columns:1fr auto;gap:9px}
#studentDashboard{width:min(1000px,94vw);margin:0 auto;padding:24px 0 60px}
.student-live-banner{display:flex;justify-content:space-between;align-items:center;gap:16px;border-radius:24px;padding:20px 22px;background:linear-gradient(135deg,rgba(214,83,53,.25),rgba(245,197,77,.08));border:1px solid rgba(255,117,80,.35);box-shadow:0 14px 50px rgba(0,0,0,.18)}
.student-live-banner h2{margin:3px 0}.student-live-banner p{margin:0;color:#d6dfeb}
.live-dot-row{font-size:.78rem;font-weight:900;text-transform:uppercase;letter-spacing:.08em;color:#ffab97}.live-dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:#ff6249;box-shadow:0 0 0 5px rgba(255,98,73,.13);margin-right:7px}
.student-section{margin-top:30px}.student-card{grid-template-columns:1fr}.student-card-actions{justify-content:flex-start}
.student-empty{padding:18px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:16px}

/* Live */
.live-evaluation-screen{min-height:100vh;background:radial-gradient(circle at 50% 0,#1d3047,#09101a 55%,#060a0f)}
.live-header{position:relative}
.live-waiting-panel,.live-finished-panel{min-height:70vh;display:grid;place-items:center;align-content:center;text-align:center;padding:30px}
.live-waiting-panel h2,.live-finished-panel h2{font-size:clamp(1.8rem,5vw,3rem);margin:12px 0 6px}.live-waiting-panel p,.live-finished-panel p{color:var(--muted);max-width:50ch}.live-waiting-icon{font-size:4rem}
.live-question-panel{width:min(1050px,95vw);margin:0 auto;padding:28px 0 60px;text-align:center}
.live-progress-row{display:flex;justify-content:space-between;gap:15px;align-items:center;color:#dce7f3}.live-response-count{font-weight:900;color:var(--gold2)}
.live-timer-track{height:12px;border-radius:999px;background:rgba(255,255,255,.09);overflow:hidden;margin:15px 0 5px}.live-timer-bar{height:100%;width:100%;background:linear-gradient(90deg,#57d193,#f0c34c,#e9644c);transform-origin:left center;transition:width .12s linear}
.live-timer-text{font-size:1.15rem;font-weight:900;color:var(--gold2)}
.live-question-text{font-size:clamp(1.5rem,4vw,3.1rem);line-height:1.25;margin:28px auto 32px;max-width:24ch}
.answer-pattern{display:flex;justify-content:center;flex-wrap:wrap;gap:clamp(14px,3vw,34px);margin:0 auto 28px;max-width:100%}
.answer-word{display:flex;gap:5px;justify-content:center;flex-wrap:wrap;max-width:100%}
.answer-cell{width:clamp(31px,7vw,54px);height:clamp(40px,9vw,64px);border:2px solid rgba(255,255,255,.2);border-radius:9px;background:rgba(255,255,255,.07);color:#fff;text-align:center;font-size:clamp(1.15rem,4vw,1.9rem);font-weight:900;text-transform:uppercase;outline:none;padding:0}
.answer-cell:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(245,197,77,.12)}
.answer-cell:disabled{opacity:.85;background:rgba(255,255,255,.05)}

.answer-symbol-palette{margin:-12px auto 24px;width:min(720px,94vw);text-align:center}
.answer-symbol-palette summary{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:7px 13px;border:1px solid rgba(255,255,255,.16);border-radius:999px;background:rgba(255,255,255,.055);color:rgba(255,255,255,.88);font-weight:800;cursor:pointer;list-style:none}
.answer-symbol-palette summary::-webkit-details-marker{display:none}
.answer-symbol-row{display:flex;flex-wrap:wrap;justify-content:center;gap:7px;margin-top:10px}
.answer-symbol-btn{min-width:40px;min-height:40px;padding:6px 9px;border:1px solid rgba(255,255,255,.16);border-radius:10px;background:rgba(255,255,255,.07);color:#fff;font:inherit;font-size:1.15rem;font-weight:900;cursor:pointer}
.answer-symbol-btn:hover,.answer-symbol-btn:focus-visible{border-color:var(--gold);background:rgba(245,197,77,.12);outline:none}
.live-student-actions,.live-teacher-actions{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:12px;margin-top:15px}.live-teacher-actions p{flex-basis:100%;color:var(--muted)}
.live-locked .answer-cell{border-color:rgba(103,215,156,.45);background:rgba(103,215,156,.08)}
.result-note{font-size:clamp(3rem,12vw,6rem);font-weight:950;color:var(--gold2);margin:10px 0}.result-sub{color:var(--muted)}
.teacher-result-table{width:min(920px,95vw);margin:22px auto;border-collapse:collapse;text-align:left}.teacher-result-table th,.teacher-result-table td{padding:10px;border-bottom:1px solid var(--line)}.teacher-result-table th{color:var(--muted);font-size:.78rem;text-transform:uppercase}

/* Dialogs */
.class-dialog{width:min(1180px,96vw);max-height:94vh;border:1px solid var(--line);border-radius:25px;padding:0;background:#101a26;color:#fff;box-shadow:var(--shadow)}
.class-dialog::backdrop{background:rgba(3,7,11,.78);backdrop-filter:blur(4px)}
.class-dialog-shell{padding:22px;max-height:92vh;overflow:auto}
.class-dialog-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:15px;margin-bottom:18px}.class-dialog-heading h2{font-size:clamp(1.5rem,3vw,2.25rem);margin:4px 0}.class-dialog-heading p{margin:0;color:var(--muted)}
.picker-filters{display:grid;grid-template-columns:220px 260px 1fr;gap:9px;position:sticky;top:-22px;z-index:5;padding:10px 0;background:#101a26}
.picker-count{color:var(--muted);font-size:.82rem;margin:5px 0 12px;font-weight:800}
.picker-questionnaire-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:8px;max-height:39vh;overflow:auto;padding-right:5px}
.picker-q-item{display:flex;align-items:flex-start;gap:10px;text-align:left;border:1px solid var(--line);border-radius:14px;padding:11px;background:rgba(255,255,255,.035);color:#fff;cursor:pointer}.picker-q-item.selected{border-color:rgba(245,197,77,.55);background:rgba(245,197,77,.08)}
.picker-q-item input{margin-top:4px}.picker-q-copy{display:grid;gap:3px}.picker-q-copy strong{font-size:.88rem}.picker-q-copy span{font-size:.72rem;color:var(--muted)}
.picker-selection-panel{border-top:1px solid var(--line);margin-top:18px;padding-top:17px}.picker-selection-panel h3{margin:3px 0 7px}.picker-selected-titles{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:14px}.picker-selected-titles span{font-size:.7rem;padding:5px 8px;border-radius:999px;background:rgba(118,183,255,.09);border:1px solid rgba(118,183,255,.25)}
.picker-config-grid,.editor-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.picker-config-grid label,.editor-grid label{display:grid;gap:5px;color:var(--muted);font-size:.76rem;font-weight:800}
.picker-publication-options{display:flex;gap:20px;flex-wrap:wrap;margin:14px 0;color:#dce8f5;font-size:.85rem}.picker-publication-options label{display:flex;align-items:center;gap:7px}
.picker-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:15px}
.editor-textarea-label{display:grid;gap:7px;margin-top:14px;color:var(--muted);font-size:.8rem;font-weight:800}.editor-textarea-label textarea{width:100%;resize:vertical;border:1px solid rgba(255,255,255,.14);border-radius:14px;background:#08111c;color:#fff;padding:12px;line-height:1.5;outline:none}.editor-library-check{display:flex;gap:8px;align-items:center;margin-top:12px;color:#e4edf6;font-weight:800;font-size:.84rem}

/* Consultation / entraînement mobile */
.study-list{display:grid;gap:10px}.study-item{padding:13px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.035)}.study-item strong{display:block;margin-bottom:5px}.study-answer{color:#a6e6bd;font-weight:900}.study-hint{font-size:.78rem;color:var(--muted);margin-top:4px}
.practice-shell{display:grid;gap:16px}.practice-progress{color:var(--muted);font-weight:800}.practice-question{font-size:clamp(1.25rem,4vw,2rem);line-height:1.3}.practice-result{min-height:1.5em;font-weight:850}.practice-result.ok{color:#84dfa8}.practice-result.bad{color:#ffb0a3}
.correction-list{display:grid;gap:10px}.correction-item{border:1px solid var(--line);border-radius:14px;padding:12px}.correction-item.ok{border-color:rgba(103,215,156,.35)}.correction-item.bad{border-color:rgba(255,109,109,.3)}.correction-item h4{margin:0 0 6px}.correction-answer-row{display:grid;gap:3px;font-size:.83rem}.correction-answer-row span{color:var(--muted)}

@media(max-width:900px){
  .teacher-layout{grid-template-columns:1fr}.teacher-sidebar{border-right:0;border-bottom:1px solid var(--line)}.teacher-class-list{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.teacher-library-block{margin-top:20px}.picker-config-grid,.editor-grid{grid-template-columns:1fr 1fr}.picker-filters{grid-template-columns:1fr 1fr}.picker-filters input{grid-column:1/-1}.teacher-main{padding:20px}
}
@media(max-width:620px){
  .class-login-form,.teacher-create-class,.student-identity-form{grid-template-columns:1fr}.class-login-links{flex-direction:column;align-items:flex-start}.class-topbar,.student-topbar,.live-header{align-items:flex-start}.class-topbar-actions{width:100%}.class-topbar{flex-direction:column}.teacher-class-hero,.student-live-banner{align-items:stretch;flex-direction:column}.teacher-class-code-card{min-width:0}.teacher-card{grid-template-columns:1fr}.teacher-card-actions{justify-content:flex-start}.picker-config-grid,.editor-grid,.picker-filters{grid-template-columns:1fr}.picker-filters input{grid-column:auto}.picker-questionnaire-list{grid-template-columns:1fr}.class-dialog-shell{padding:15px}.class-dialog-heading{flex-direction:column}.answer-pattern{gap:20px 24px}.answer-word{gap:3px}.answer-cell{width:min(10vw,42px);height:min(13vw,52px)}
  .answer-word-long .answer-cell{width:min(8.4vw,36px);height:min(11vw,48px);font-size:1rem}
  .answer-symbol-palette{margin-top:-8px}
}
.picker-check-label span{display:flex;align-items:center;gap:8px;min-height:42px;color:#eaf1f8;font-size:.82rem;font-weight:750}.picker-check-label input{width:auto}

/* Administration des comptes professeurs */
.admin-screen {
  min-height: 100vh;
  padding: clamp(16px, 3vw, 34px);
  background:
    radial-gradient(circle at 12% 10%, rgba(244,190,0,.12), transparent 28%),
    radial-gradient(circle at 86% 14%, rgba(58,132,255,.10), transparent 30%),
    #0b1119;
}
.admin-topbar-copy { margin: 5px 0 0; color: rgba(235,242,251,.65); }
.admin-layout { width: min(1180px, 100%); margin: 0 auto; display: grid; gap: 22px; }
.admin-summary-grid { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:12px; }
.admin-summary-card {
  display:grid; gap:3px; padding:18px 20px; border-radius:20px;
  border:1px solid rgba(255,255,255,.10); background:rgba(255,255,255,.045);
  color:rgba(235,242,251,.68); font-size:.82rem; font-weight:800;
}
.admin-summary-value { font-size:clamp(1.65rem,4vw,2.65rem); line-height:1; color:#fff; font-weight:950; }
.admin-panel {
  border:1px solid rgba(255,255,255,.11); border-radius:26px; padding:clamp(18px,3vw,30px);
  background:linear-gradient(180deg,rgba(20,32,48,.96),rgba(10,17,27,.97));
  box-shadow:0 24px 72px rgba(0,0,0,.30);
}
.admin-create-teacher-form { display:grid; grid-template-columns:1.25fr 1fr auto; gap:12px; align-items:end; margin:18px 0 6px; }
.admin-create-teacher-form label { display:grid; gap:6px; color:rgba(235,242,251,.72); font-size:.78rem; font-weight:850; }
.admin-create-teacher-form input {
  min-width:0; border:1px solid rgba(255,255,255,.14); border-radius:14px; padding:12px 13px;
  background:rgba(255,255,255,.06); color:#fff; font:inherit; outline:none;
}
.admin-create-teacher-form input:focus { border-color:rgba(244,190,0,.68); box-shadow:0 0 0 3px rgba(244,190,0,.10); }
.admin-teacher-list { display:grid; gap:11px; margin-top:18px; }
.admin-teacher-card {
  display:grid; grid-template-columns:minmax(0,1fr) auto; gap:16px; align-items:center;
  padding:17px 18px; border-radius:19px; border:1px solid rgba(255,255,255,.10); background:rgba(255,255,255,.038);
}
.admin-teacher-card.disabled { opacity:.68; border-style:dashed; }
.admin-teacher-main { min-width:0; }
.admin-teacher-heading { display:flex; flex-wrap:wrap; align-items:center; gap:9px; }
.admin-teacher-heading h3 { margin:0; font-size:1.05rem; }
.admin-teacher-main p { margin:5px 0 0; color:rgba(235,242,251,.68); font-size:.8rem; line-height:1.45; }
.admin-teacher-main .admin-teacher-secret { color:rgba(244,205,83,.72); font-size:.72rem; }
.admin-teacher-actions { display:flex; flex-wrap:wrap; justify-content:flex-end; gap:7px; }
.status-pill.status-disabled { background:rgba(255,255,255,.08); color:rgba(235,242,251,.62); }
.admin-security-note {
  padding:17px 20px; border-radius:18px; border:1px solid rgba(244,190,0,.18); background:rgba(244,190,0,.045);
  color:rgba(235,242,251,.72); font-size:.82rem; line-height:1.5;
}
.admin-security-note strong { color:#ffe089; }
.admin-security-note p { margin:5px 0 0; }
@media (max-width: 820px) {
  .admin-summary-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .admin-create-teacher-form { grid-template-columns:1fr; }
  .admin-teacher-card { grid-template-columns:1fr; }
  .admin-teacher-actions { justify-content:flex-start; }
}