:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#202c2a;background:#f4f3ee;font-size:16px}*{box-sizing:border-box}body{margin:0}main{max-width:1160px;margin:auto;padding:32px 28px 24px}header{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:26px}h1{font-size:clamp(25px,4vw,38px);font-weight:550;letter-spacing:-1.2px;margin:9px 0}header p{color:#6a756e;margin:0;font-size:15px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;color:#61756b}.badge{font-size:12px;background:#e4ebe3;border-radius:30px;padding:9px 14px;white-space:nowrap;color:#345747}.badge.error{background:#f9e5dd;color:#944422}.settings{border:1px solid #d9ddd4;border-radius:12px;background:#fafaf6;margin-bottom:16px}summary{cursor:pointer;padding:15px 18px;font-size:13px;font-weight:600}.settings summary span{float:right;color:#819085;font-weight:400}.settings-content{padding:4px 18px 18px;max-width:800px}label{display:block;font-size:13px;margin:14px 0 7px}textarea,input[type=password],input:not([type]){display:block;width:100%;padding:12px;border:1px solid #ced7cc;border-radius:8px;background:white;color:#202c2a;font:inherit;font-size:14px}textarea{resize:vertical}.hint{font-size:12px;line-height:1.5;color:#707e73}.file-label input{font-size:12px;margin-left:10px}.exercise-preview{padding:17px 20px;background:#e9eee4;border-radius:12px;margin-bottom:18px}.exercise-preview p{white-space:pre-wrap;font-size:15px;line-height:1.6;margin:9px 0 0}.board-card{background:white;border:1px solid #d8ddd3;border-radius:16px;box-shadow:0 8px 30px #21342107;overflow:hidden}.board-top{height:47px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid #edf0e9;color:#859084;font-size:12px}.tools{position:relative}.tools summary{font-weight:400;padding:12px 0}.tools>div{position:absolute;z-index:4;top:40px;right:0;min-width:240px;padding:12px;background:#fff;border:1px solid #d8ddd3;border-radius:10px;box-shadow:0 4px 16px #0001}.tools label{margin:14px 0 4px}.canvas-wrap{position:relative;background-image:radial-gradient(#d4ddcf 0.7px,transparent .7px);background-size:24px 24px}canvas{width:100%;height:auto;display:block;touch-action:none;cursor:crosshair;-webkit-user-select:none;user-select:none}#board-placeholder{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;pointer-events:none;font-size:24px;color:#adb7aa;font-weight:400}#board-placeholder small{font-size:13px;margin-top:12px;color:#b3bcae}.action{display:flex;flex-direction:column;align-items:center;padding:22px 0 12px}.primary{border:0;border-radius:100px;background:#244d3c;color:white;padding:18px 29px;font:inherit;font-size:15px;font-weight:600;box-shadow:0 4px 12px #244d3c20;cursor:pointer}.primary span{margin-right:9px;font-size:18px}.primary:hover{background:#1b3f30}.primary:disabled{opacity:.6;cursor:wait}.secondary{margin-top:10px;padding:10px 14px;border:1px solid #ccd6c7;background:#f7f9f3;border-radius:8px;color:#31533d;cursor:pointer}#status{font-size:12px;color:#71816e;text-align:center;max-width:650px;line-height:1.5;margin:12px 0 0}.result{background:#fff;border:1px solid #d6dfcf;border-radius:14px;padding:22px;margin-top:4px}.result-heading{display:flex;justify-content:space-between;align-items:center;gap:12px}#feedback{font-size:17px;line-height:1.7}#next-step{font-size:14px;color:#4b6950;line-height:1.5}audio{width:100%;margin-top:8px}.result details{border-top:1px solid #e8eee2;margin-top:14px}.result summary{padding-left:0;color:#6c7e65}#transcription{white-space:pre-wrap;font-size:14px;line-height:1.6}footer{text-align:center;font-size:10px;color:#8a9484;margin:20px 0 0}button:focus-visible,summary:focus-visible{outline:3px solid #a4b991;outline-offset:4px}[hidden]{display:none!important}@media(max-width:650px){main{padding:20px 12px}header{gap:10px;align-items:flex-start}header .badge{font-size:10px;padding:7px 9px;margin-top:2px}header p{font-size:12px}h1{letter-spacing:-.6px}.settings summary span{display:none}.primary{font-size:14px;padding:17px 22px}.canvas-wrap{background-size:18px 18px}#board-placeholder{font-size:19px}#board-placeholder small{font-size:10px}.exercise-preview{padding:14px 16px}.file-label input{display:block;margin:10px 0 0}.result{padding:16px}}
.action{position:sticky;bottom:0;z-index:5;background:rgba(244,243,238,.96);backdrop-filter:blur(12px);border-radius:12px}
.board-top{height:auto;min-height:55px;gap:12px}.drawing-tools{display:flex;gap:6px}.tool-button,.page-button,.hint-button{font:inherit;cursor:pointer;border:1px solid #cbd7c6;background:#f7f9f3;color:#31533d;border-radius:9px;padding:11px 14px;font-size:13px}.tool-button[aria-pressed=true]{background:#244d3c;color:white;border-color:#244d3c}.page-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 18px;border-bottom:1px solid #edf0e9}.page-button:disabled{opacity:.35;cursor:default}#page-select{font:inherit;font-size:13px;min-height:42px;max-width:120px;background:white;border:1px solid #cbd7c6;border-radius:8px;padding:8px}.page-bar #new-page{margin-left:auto}.page-bar .hint{margin:0}#tool-status{margin:0;padding:10px 18px;border-top:1px solid #edf0e9}.action-buttons{display:flex;gap:12px;align-items:center;justify-content:center}.hint-button{border-radius:100px;font-size:15px;font-weight:600;padding:18px 26px;background:#e8eee2;min-height:60px}.hint-button:disabled{opacity:.5;cursor:wait}canvas[data-tool=lasso]{cursor:cell}.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}@media(max-width:650px){.board-top{padding:0 10px}.tool-button{font-size:12px;padding:10px}.tools summary{font-size:11px}.page-bar{padding:8px 10px;gap:5px}.page-button{padding:10px;font-size:12px}.hint-button{font-size:13px;padding:17px 20px;min-height:56px}.action-buttons{gap:8px}.action .primary{font-size:12px;padding:17px}.action .primary span{margin-right:4px}#tool-status{font-size:11px}}
.primary .review-label{margin:0;font:inherit}.label-short{display:none}
@media(max-width:450px){main{padding:14px 12px}header{display:block;position:relative;margin-bottom:16px}header .badge{position:absolute;right:0;top:0;font-size:9px;padding:6px 8px}header .eyebrow{font-size:8px;letter-spacing:1px}h1{font-size:22px;margin:12px 0 0;letter-spacing:-.7px}header p{display:none}.exercise-preview{padding:10px 12px;margin-bottom:12px}.exercise-preview summary{padding:8px 4px}.exercise-preview .eyebrow{font-size:9px;letter-spacing:1px}.page-bar{gap:4px;padding:7px 8px}.page-button{padding:9px 7px;font-size:10px}#page-select{font-size:11px;min-height:36px;max-width:83px;padding:7px 3px}.page-bar .hint{font-size:10px}.page-bar #new-page{font-size:10px;padding:9px 6px}.action{padding:12px 0 8px}.action-buttons{width:100%;display:grid;grid-template-columns:minmax(0,1fr) auto}.action .primary{font-size:12px;padding:13px 10px;min-height:47px}.hint-button{font-size:12px;min-height:47px;padding:13px 18px}.label-full{display:none}.label-short{display:inline}#status{font-size:10px;margin:8px 8px 0}}
.question-progress{border:1px solid #d9ddd4;background:#fafaf6;border-radius:12px;padding:13px 17px;margin-bottom:16px}.progress-heading,.history-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.progress-heading .hint{margin:0}.question-checkboxes{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}.question-checkboxes label{display:flex;align-items:center;gap:6px;margin:0;padding:9px 11px;border:1px solid #d2dcca;border-radius:8px;background:white;cursor:pointer;font-size:13px;min-height:40px}.question-checkboxes label:has(input:checked){background:#e4eedc;color:#345747}.question-checkboxes input{accent-color:#244d3c;width:16px;height:16px;margin:0}#progress-note{margin:9px 0 0}.feedback-history{margin-top:16px}.history-heading h2{font-size:18px;font-weight:550;margin:0}.history-heading .hint{margin:0}#history-list .result{margin-top:12px}.entry-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.entry-kind{font-size:13px;font-weight:650;color:#345747}.entry-date{font-size:11px;color:#778574}.entry-meta{font-size:11px;color:#778574;margin:9px 0}.entry-feedback{font-size:16px;line-height:1.7;white-space:pre-wrap}.entry-next{font-size:14px;line-height:1.5;color:#4b6950}.entry-transcription{white-space:pre-wrap;font-size:14px;line-height:1.6}.entry-audio-note{font-size:12px;color:#707e73;line-height:1.5}.entry-validated{font-size:11px;color:#778574}@media(max-width:450px){.question-progress{padding:10px 12px;margin-bottom:12px}.question-progress .eyebrow{font-size:8px;letter-spacing:1px}.question-checkboxes{gap:5px;margin-top:7px}.question-checkboxes label{padding:7px;font-size:11px;min-height:34px}.question-checkboxes input{width:14px;height:14px}#progress-note{font-size:10px}.history-heading{align-items:flex-start}.history-heading h2{font-size:16px}.history-heading .hint{max-width:110px;text-align:right;font-size:10px}.entry-date{font-size:10px}.entry-feedback{font-size:14px}}
.question-progress summary{padding:0;min-height:20px}.question-progress summary .eyebrow{float:none}.question-progress summary #progress-count{float:right;font-weight:400}
canvas{aspect-ratio:8/5}

.site-nav{max-width:1160px;margin:auto;padding:20px 28px 0;display:flex;align-items:center;justify-content:space-between;gap:20px}.site-brand img{display:block;width:170px;height:auto}.site-nav>div{display:flex;gap:20px}.site-nav a{color:#31533d;font-size:13px;text-decoration:none}.site-nav a:hover{text-decoration:underline}.access-notice{padding:16px 20px;border:1px solid #d9ddd4;border-radius:12px;line-height:1.6;background:#fafaf6;font-size:14px}.access-notice a{color:#244d3c;font-weight:650}@media(max-width:650px){.site-nav{padding:16px 12px 0}.site-brand img{width:130px}.site-nav>div{gap:12px}.site-nav a{font-size:12px}}
:root .exercise-content{white-space:pre-wrap;font-size:15px;line-height:1.7;margin-top:9px;overflow-wrap:anywhere}.exercise-content .katex{white-space:normal;overflow-wrap:normal}.exercise-content .katex-display{overflow-x:auto;overflow-y:hidden;padding:4px 0}.settings-content #photo-status:empty{display:none}

/* Espace de travail : énoncé, suivi et retours à côté du tableau sur grand écran. */
header h1{font-size:clamp(24px,3vw,32px);letter-spacing:-.8px;margin:4px 0 6px}header .eyebrow{margin:0}
.workspace-grid{display:flex;flex-direction:column;gap:14px}.side-column{display:contents}
.settings{order:0;margin:0}.exercise-preview{order:1;margin:0}.question-progress{order:2;margin:0}.board-column{order:3;min-width:0}.feedback-history{order:4;margin:0}
.exercise-preview summary{padding:0 0 2px}.exercise-content{max-height:38vh;overflow:auto;padding-right:6px}
.board-top{flex-wrap:wrap;padding:8px 14px;min-height:0}.board-top .page-bar{border:0;padding:0;flex:1;justify-content:center}.board-top .page-bar #new-page{margin-left:8px}
.tools summary{list-style:none;font-size:20px;line-height:1;padding:8px 12px;border:1px solid #cbd7c6;border-radius:9px;background:#f7f9f3;color:#31533d}.tools summary::-webkit-details-marker{display:none}
.tools>div{display:flex;flex-direction:column;gap:6px}.tools .secondary{margin:0;text-align:left}
.action{position:static;background:none;backdrop-filter:none;border-radius:0;flex-direction:row;justify-content:space-between;gap:16px;padding:12px 16px;border-top:1px solid #edf0e9}
.action #tool-status{border:0;padding:0;margin:0;flex:1}.action-buttons{flex-shrink:0}
.primary,.hint-button{min-height:52px;padding:14px 24px}.primary.is-busy,.hint-button.is-busy{animation:colles-busy 1.2s ease-in-out infinite}
@keyframes colles-busy{50%{opacity:.45}}@media(prefers-reduced-motion:reduce){.primary.is-busy,.hint-button.is-busy{animation:none}}
#status{margin:10px auto 0;min-height:1.5em}
.feedback-history .result:first-child{border-color:#9fb894;box-shadow:0 4px 14px #244d3c12}
@media(min-width:1100px){
main,.site-nav{max-width:1480px}
.workspace-grid{display:grid;grid-template-columns:minmax(300px,380px) minmax(0,1fr);gap:20px;align-items:start}
.side-column{display:flex;flex-direction:column;gap:14px;position:sticky;top:12px;max-height:calc(100vh - 24px);overflow:auto;padding:0 4px 4px 0}
.exercise-content{max-height:45vh}.settings summary span{display:none}
header{margin-bottom:16px}.board-card{max-width:max(560px,calc((100vh - 330px)*1.6));margin:0 auto}.feedback-history .history-heading h2{font-size:16px}.entry-feedback{font-size:15px}
}
@media(max-width:650px){.board-top{padding:8px 10px;gap:8px}.board-top .page-bar{order:3;flex-basis:100%;justify-content:flex-start}
.action{flex-direction:column;align-items:stretch;padding:10px}.action-buttons{display:grid;grid-template-columns:auto minmax(0,1fr);width:100%}}

/* Plein écran du tableau : énoncé, suivi et historique masqués. */
.colles-focus{overflow:hidden;overscroll-behavior:none}.colles-focus .board-column{overscroll-behavior:none;touch-action:manipulation}.colles-focus .site-nav,.colles-focus header,.colles-focus .settings,.colles-focus #access-notice,.colles-focus .side-column,.colles-focus footer{display:none!important}
.colles-focus .board-column{position:fixed;inset:0;z-index:20;display:flex;flex-direction:column;padding:max(8px,env(safe-area-inset-top)) max(8px,env(safe-area-inset-right)) max(6px,env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left));background:#f4f3ee}
.colles-focus .board-card{flex:1;min-height:0;max-width:none;width:100%;display:flex;flex-direction:column;border-radius:12px}
.colles-focus .canvas-wrap{flex:1;min-height:0;container-type:size;display:flex;align-items:center;justify-content:center;background:#e9ece5}
.colles-focus canvas{width:min(100cqw,160cqh);background-color:#fff;background-image:radial-gradient(#d4ddcf .7px,transparent .7px);background-size:24px 24px}
.colles-focus #tool-status{display:none}.colles-focus .action{justify-content:center;padding:8px 12px}.colles-focus #status{margin:4px auto 0;font-size:11px;min-height:0}
#fullscreen[aria-pressed=true]{background:#244d3c;color:#fff;border-color:#244d3c}
@media(max-width:650px){.colles-focus .action-buttons{max-width:520px;margin:0 auto}}
/* Colle de 30 minutes : crédits, bouton de départ et minuteur. */
.colle-session{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;border:1px solid #c9d8c3;background:#eef4ea;border-radius:12px;padding:13px 17px;margin-bottom:16px}.colle-session .hint{margin:4px 0 0}.colle-session .primary{padding:12px 20px;font-size:14px}.colle-session .primary:disabled{cursor:default}.colle-timer{font-size:26px;font-weight:650;font-variant-numeric:tabular-nums;color:#244d3c}.colle-session.is-ending .colle-timer,.colle-clock.is-ending{color:#a5461f}.colle-clock{font-size:15px;font-weight:650;font-variant-numeric:tabular-nums;color:#244d3c;background:#eef4ea;border-radius:30px;padding:8px 12px;white-space:nowrap}.file-label:has(input:disabled){opacity:.55}
@media(max-width:450px){.colle-session{padding:10px 12px;margin-bottom:12px}.colle-timer{font-size:22px}.action .colle-clock{align-self:center;font-size:13px;padding:6px 10px}}