:root{--bg:#f6f4ef;--card:#fff;--ink:#1d1d1f;--mute:#6b6b70;--line:#e2dfd6;--acc:#2f5bd8;--ok:#1f9d55;--bad:#d64545;--mid:#d98b1b}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;-webkit-tap-highlight-color:transparent;overscroll-behavior-y:none;padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right);background:var(--bg);color:var(--ink);font:17px/1.5 -apple-system,BlinkMacSystemFont,"SF Pro Text",system-ui,sans-serif}
a{color:var(--acc);text-decoration:none}
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:16px;padding:10px 20px;padding-top:max(10px,env(safe-area-inset-top));background:rgba(246,244,239,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{font-weight:700;color:var(--ink);font-size:19px}.brand span{color:var(--mute);font-weight:500;font-size:15px;margin-left:4px}
nav{display:flex;gap:4px;flex:1}nav a{padding:10px 14px;border-radius:10px;color:var(--ink);min-height:44px;display:flex;align-items:center}
nav a.on{background:#e9e6dc;font-weight:600}
.agent{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;min-height:44px;font-size:15px;cursor:pointer}
.agent.pending{border-color:var(--mid);background:#fff6e6}
main{max-width:980px;margin:0 auto;padding:20px 20px calc(120px + env(safe-area-inset-bottom))}
h1{font-size:28px;margin:8px 0 4px}h2{font-size:21px;margin:28px 0 10px}h3{font-size:17px;margin:0}
.sub{color:var(--mute);margin:0 0 16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin:14px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.sp{flex:1}
button,.btn{font:inherit;min-height:44px;padding:8px 16px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;gap:6px}
button:active{transform:scale(.98)}
button.primary{background:var(--acc);border-color:var(--acc);color:#fff}
button.ghost{background:transparent}
button:disabled{opacity:.5}
.chip{display:inline-block;font-size:13px;padding:2px 10px;border-radius:999px;background:#ece9df;color:var(--mute)}
.bar{height:10px;background:#ece9df;border-radius:6px;overflow:hidden}.bar>i{display:block;height:100%;background:var(--acc)}
.bar.ok>i{background:var(--ok)}.bar.warn>i{background:var(--mid)}.bar.bad>i{background:var(--bad)}
.big{font-size:44px;font-weight:700;letter-spacing:-1px}
.chap{display:grid;grid-template-columns:minmax(120px,260px) 1fr 56px;gap:12px;align-items:center;margin:8px 0}
.q{scroll-margin-top:80px}
.q .stmt{margin:10px 0 6px;overflow-x:auto}
.part{border-top:1px dashed var(--line);padding:12px 0}
.part:first-of-type{border-top:none}
.plabel{margin-bottom:8px}
.choices{display:flex;gap:10px;flex-wrap:wrap}
.choices button{min-width:110px;justify-content:center;font-weight:600}
.choices button.sel{background:#e8eefc;border-color:var(--acc);color:var(--acc)}
.choices button.ok{background:#e4f6ec;border-color:var(--ok);color:var(--ok)}
.choices button.bad{background:#fde9e9;border-color:var(--bad);color:var(--bad)}
textarea{width:100%;min-height:96px;font:inherit;border:1px solid var(--line);border-radius:12px;padding:10px 12px;resize:vertical;background:#fffdf9}
.pencil{margin-top:8px;border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden}
.ptools{display:flex;gap:6px;flex-wrap:wrap;padding:6px;border-bottom:1px solid var(--line);background:#faf8f2}
.ptools button{min-height:40px;padding:4px 12px}
.ptools button.sel{background:#e8eefc;border-color:var(--acc)}
.dot{width:20px;height:20px;border-radius:50%;display:inline-block;border:2px solid #fff;box-shadow:0 0 0 1px var(--line)}
canvas.draw{display:block;width:100%;touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;background:
 repeating-linear-gradient(transparent 0 31px,#eef0f6 31px 32px)}
.res{margin-top:10px;padding:10px 14px;border-radius:12px;font-size:16px}
.res.correct{background:#e4f6ec}.res.incorrect{background:#fde9e9}.res.partial{background:#fff3dc}
.res b.t{display:block;margin-bottom:4px}
.thread{margin-top:12px;display:grid;gap:8px}
.msg{padding:10px 14px;border-radius:12px;background:#f3f1ea}
.msg.me{background:#e8eefc}.msg .meta{font-size:13px;color:var(--mute);margin-bottom:2px}
.msg.wait{background:#fff6e6}
.ask{margin-top:10px;display:grid;gap:8px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#1d1d1f;color:#fff;padding:12px 18px;border-radius:14px;max-width:90vw;z-index:50;box-shadow:0 8px 30px rgba(0,0,0,.25)}
.toast button{margin-left:10px;min-height:36px}
.sticky{position:sticky;bottom:0;padding-bottom:max(12px,env(safe-area-inset-bottom));background:rgba(246,244,239,.95);padding:12px 0;border-top:1px solid var(--line);margin-top:20px;backdrop-filter:blur(8px)}
.drop{border:2px dashed var(--line);border-radius:16px;padding:22px;text-align:center;color:var(--mute)}
.drop.over{border-color:var(--acc);background:#eef2fd}
pre,code{background:#f1efe8;border-radius:6px;padding:1px 5px;font-size:15px}pre{padding:10px;overflow:auto}
table{border-collapse:collapse;width:100%}td,th{padding:8px;border-bottom:1px solid var(--line);text-align:left}
@media(max-width:700px){.chap{grid-template-columns:1fr 56px}.chap .bar{grid-column:1/-1;order:3}nav a{padding:8px 10px;font-size:15px}.top{gap:8px}.brand span{display:none}}
.pstage{position:relative;overflow:hidden;touch-action:none;-webkit-user-select:none;user-select:none}
.pstage.erasing{cursor:cell;box-shadow:inset 0 0 0 3px #d6454555}
.pstage canvas.draw{transform-origin:0 0;width:auto}
.scorebar{display:flex;gap:14px;align-items:baseline;flex-wrap:wrap}
.scorebar b{font-size:1.4em}
.chip.neg{background:#fde8e8;color:#b32d2d}.chip.pos{background:#e3f6e8;color:#1f7a3a}
.ro .choices,.ro textarea,.ro .pstage,.ro .ptools,.ro [data-act],.ro .ask{pointer-events:none;opacity:.75}
.ro .ptools{display:none}

/* Modal réglages IA */
.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.45);backdrop-filter:blur(6px);z-index:100;display:flex;align-items:center;justify-content:center;padding:16px}
.modal-box{background:var(--card);border:1px solid var(--line);border-radius:20px;max-width:540px;width:100%;max-height:92vh;overflow-y:auto;padding:24px;box-shadow:0 20px 40px rgba(0,0,0,.2)}
.field{margin-bottom:18px}.field label{display:block;font-weight:600;margin-bottom:6px;font-size:15px}
.field select,.field input[type="text"],.field input[type="password"]{width:100%;padding:10px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
.field .hint{font-size:13px;color:var(--mute);margin-top:6px;line-height:1.4}
.toggle-box{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}
.toggle-opt{border:2px solid var(--line);border-radius:12px;padding:12px 14px;cursor:pointer;background:#fff;text-align:left;transition:border-color .15s}
.toggle-opt:hover{border-color:#ccc}
.toggle-opt.sel{border-color:var(--acc);background:#f2f5fd}
.toggle-opt b{display:block;margin-bottom:2px;font-size:15px}
.toggle-opt span{display:block;font-size:12px;color:var(--mute);line-height:1.3}
.modal{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.35);display:flex;align-items:center;justify-content:center;padding:16px}
.modal .card{width:min(820px,100%);max-height:92vh;overflow:auto;margin:0}
[hidden]{display:none!important}