:root{
  --red:#E30513; --red-dark:#B0040F; --red-wash:#FDECEE; --gold:#FFC103; --gold-wash:#FFF6D6;
  --ink:#23252A; --muted:#5D6169; --line:#D9DCE1; --bg:#F2F3F5; --surface:#FFFFFF; --surface-2:#F8F9FA;
  --ok:#23784A; --ok-wash:#E6F4EC; --bad:#B3261E; --bad-wash:#FBEAE9; --focus:#1A5FB4;
  --sans:"Source Sans 3", "Segoe UI", system-ui, -apple-system, sans-serif;
  --serif:"Source Serif 4", Georgia, "Times New Roman", serif;
  color-scheme: light;
  box-sizing:border-box; padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --red:#FF4B57; --red-dark:#FF7A83; --red-wash:#3A1A1D; --gold:#FFC93A; --gold-wash:#3A3115;
    --ink:#ECEDEF; --muted:#A6ABB3; --line:#3A3D44; --bg:#17181B; --surface:#212328; --surface-2:#1B1D21;
    --ok:#5CC98A; --ok-wash:#173325; --bad:#FF8A80; --bad-wash:#3B1C1A; --focus:#7FB2FF; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --red:#FF4B57; --red-dark:#FF7A83; --red-wash:#3A1A1D; --gold:#FFC93A; --gold-wash:#3A3115;
  --ink:#ECEDEF; --muted:#A6ABB3; --line:#3A3D44; --bg:#17181B; --surface:#212328; --surface-2:#1B1D21;
  --ok:#5CC98A; --ok-wash:#173325; --bad:#FF8A80; --bad-wash:#3B1C1A; --focus:#7FB2FF; color-scheme:dark;
}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
*,*::before,*::after{box-sizing:inherit}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.55 var(--sans);-webkit-font-smoothing:antialiased}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;font-weight:700}
h1{font-size:1.9rem;letter-spacing:-.01em} h2{font-size:1.4rem} h3{font-size:1.1rem}
p{margin:0 0 .9em}
a{color:var(--red-dark)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
img{max-width:100%}

/* header */
.top{background:var(--red);color:#fff;position:sticky;top:env(safe-area-inset-top,0px);z-index:20}
.top-in{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:16px;padding:12px 20px}
.brand{display:flex;flex-direction:column;line-height:1.15}
.brand b{font-size:1.15rem;font-weight:700}
.brand span{font-size:.85rem;opacity:.9}
.top .grow{flex:1}
.top button{background:transparent;border:1.5px solid rgba(255,255,255,.7);color:#fff;border-radius:6px;padding:6px 12px;cursor:pointer;font-weight:600;font-size:.9rem}
.top button:hover{background:rgba(255,255,255,.14)}
.crumb{font-size:.95rem;font-weight:600;opacity:.95}

.wrap{max-width:1180px;margin:0 auto;padding:28px 20px 60px}
.narrow{max-width:760px}
.grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start}
@media (max-width:900px){.grid{grid-template-columns:1fr}}

.panel{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:24px}
.panel + .panel{margin-top:18px}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.spacer{height:16px}

.btn{display:inline-flex;align-items:center;gap:6px;border-radius:7px;padding:10px 18px;border:1.5px solid var(--line);background:var(--surface);cursor:pointer;font-weight:600;text-decoration:none;color:var(--ink)}
.btn:hover{border-color:var(--muted)}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff}
.btn.primary:hover{background:var(--red-dark);border-color:var(--red-dark)}
:root[data-theme="dark"] .btn.primary, :root:not([data-theme="light"]) .btn.primary{color:#fff}
.btn.ghost{background:transparent}
.btn.sm{padding:5px 11px;font-size:.88rem}
.btn.danger{color:var(--bad);border-color:var(--bad)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn.armed{background:var(--bad);color:#fff;border-color:var(--bad)}

/* parcours cards */
.parcours{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.pcard{background:var(--surface);border:1px solid var(--line);border-top:6px solid var(--red);border-radius:10px;padding:22px;display:flex;flex-direction:column;gap:10px}
.pcard .letter{font:600 2.6rem/1 var(--serif);color:var(--red)}
.pcard .status{font-size:.92rem;color:var(--muted)}
.pcard .btn{align-self:flex-start;margin-top:auto}

/* skillometer */
.skills h3{display:flex;justify-content:space-between;align-items:baseline}
.skill{margin:14px 0}
.skill-name{font-size:.92rem;font-weight:600;display:flex;justify-content:space-between;gap:8px}
.skill-name .v{font-variant-numeric:tabular-nums;color:var(--muted);font-weight:400}
.bar{position:relative;height:10px;background:var(--surface-2);border:1px solid var(--line);border-radius:5px;margin-top:5px;overflow:visible}
.bar i{position:absolute;inset:0 auto 0 0;background:var(--red);border-radius:4px;transition:width .5s ease}
.bar.done i{background:var(--gold)}
.bar b{position:absolute;top:-4px;bottom:-4px;width:2px;background:var(--ink);opacity:.55}
.skill.current .skill-name{color:var(--red-dark)}
.skill .lnk{background:none;border:0;padding:0;color:var(--muted);font-size:.82rem;text-decoration:underline;cursor:pointer;margin-top:3px}
.legend{font-size:.8rem;color:var(--muted);border-top:1px solid var(--line);padding-top:10px;margin-top:14px}

/* activity */
.kchip{display:inline-block;background:var(--red-wash);color:var(--red-dark);border-radius:999px;padding:3px 11px;font-size:.85rem;font-weight:600}
.kind{font-size:.88rem;color:var(--muted);margin-left:8px}
.stem{font-size:1.12rem;margin:14px 0 18px}
.context{background:var(--surface-2);border-left:4px solid var(--gold);padding:14px 16px;border-radius:0 8px 8px 0;margin:12px 0 18px;font-family:var(--serif);line-height:1.65}
.steps-ind{display:flex;gap:6px;margin:6px 0 4px}
.steps-ind span{flex:1;height:5px;border-radius:3px;background:var(--line)}
.steps-ind span.on{background:var(--red)} .steps-ind span.past{background:var(--muted)}
.opts{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
.opt{display:flex;gap:12px;align-items:flex-start;border:1.5px solid var(--line);border-radius:8px;padding:12px 14px;cursor:pointer;background:var(--surface)}
.opt:hover{border-color:var(--muted)}
.opt input{margin-top:5px;accent-color:var(--red);width:18px;height:18px;flex:none}
.opt.sel{border-color:var(--red);background:var(--red-wash)}
.opt.right{border-color:var(--ok);background:var(--ok-wash)}
.opt.wrong{border-color:var(--bad);background:var(--bad-wash)}
.opt .fb{display:block;font-size:.92rem;margin-top:6px;color:var(--ink)}
.locked .opt{cursor:default}
.verdict{border-radius:8px;padding:14px 16px;margin-bottom:16px;font-weight:600}
.verdict.ok{background:var(--ok-wash);color:var(--ok)} .verdict.no{background:var(--bad-wash);color:var(--bad)}
.verdict p{font-weight:400;color:var(--ink);margin:.4em 0 0}
.hints{margin-top:18px;border-top:1px dashed var(--line);padding-top:14px}
.hint{background:var(--gold-wash);border-radius:8px;padding:10px 14px;margin:8px 0;font-size:.97rem}
.hint b{display:block;font-size:.82rem;color:var(--muted);font-weight:600}

/* theory */
.theory{font-family:var(--serif);font-size:1.08rem;line-height:1.7;max-width:68ch}
.theory h2{font-family:var(--sans)}
.theory ul{padding-left:1.2em} .theory li{margin:.35em 0}
.keypoints{border:1px solid var(--line);border-radius:8px;padding:14px 18px;margin-top:20px;font-family:var(--sans)}
.keypoints h3{font-size:.95rem;color:var(--muted)}
.keypoints ul{margin:0;padding-left:1.1em}

.progress{height:6px;background:var(--line);border-radius:3px;overflow:hidden;margin:6px 0 20px}
.progress i{display:block;height:100%;background:var(--red)}

.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(20px + env(safe-area-inset-bottom,0px));background:var(--ink);color:var(--bg);padding:12px 18px;border-radius:8px;z-index:50;max-width:90vw;box-shadow:0 6px 24px rgba(0,0,0,.25)}
.toast.gold{background:var(--gold);color:#23252A}

/* forms */
label.f{display:block;font-size:.88rem;font-weight:600;margin:12px 0 4px}
input[type=text],input[type=number],select,textarea{width:100%;border:1.5px solid var(--line);border-radius:7px;padding:8px 10px;background:var(--surface)}
textarea{min-height:80px;resize:vertical;line-height:1.45}
textarea.tall{min-height:260px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.88rem}
.fgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}
.check{display:flex;gap:8px;align-items:center;font-weight:400}

/* admin */
.tabs{display:flex;gap:4px;border-bottom:2px solid var(--line);margin-bottom:22px;flex-wrap:wrap}
.tabs button{background:none;border:0;padding:10px 16px;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-2px}
.tabs button.on{color:var(--red-dark);border-bottom-color:var(--red)}
.subtabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.subtabs button{border:1.5px solid var(--line);background:var(--surface);border-radius:999px;padding:5px 14px;cursor:pointer;font-weight:600;font-size:.9rem}
.subtabs button.on{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.tscroll{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.93rem}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:600;color:var(--muted);font-size:.85rem;white-space:nowrap}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
tr.click{cursor:pointer} tr.click:hover td{background:var(--surface-2)}
.pill{display:inline-block;border-radius:999px;padding:1px 9px;font-size:.8rem;font-weight:600;background:var(--surface-2);border:1px solid var(--line)}
.pill.red{background:var(--red-wash);border-color:transparent;color:var(--red-dark)}
.pill.gold{background:var(--gold-wash);border-color:transparent}
.pill.ok{background:var(--ok-wash);border-color:transparent;color:var(--ok)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:22px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.stat b{display:block;font-size:1.6rem;font-variant-numeric:tabular-nums}
.stat span{font-size:.85rem;color:var(--muted)}
.ed-opt{display:grid;grid-template-columns:1fr auto;gap:8px;border:1px solid var(--line);border-radius:8px;padding:10px;margin:8px 0;background:var(--surface-2)}
.ed-opt textarea{min-height:44px}
.ed-step{border:1.5px solid var(--line);border-left:5px solid var(--gold);border-radius:8px;padding:14px;margin:14px 0}
.warn{background:var(--gold-wash);border-radius:8px;padding:10px 14px;font-size:.92rem;margin:8px 0}
.err{background:var(--bad-wash);color:var(--bad);border-radius:8px;padding:10px 14px;font-size:.92rem;margin:8px 0}
.kc-ed{border:1px solid var(--line);border-radius:10px;padding:16px;margin-bottom:14px;background:var(--surface)}
details summary{cursor:pointer;font-weight:600}
.list-item{display:flex;gap:12px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}
.list-item .t{flex:1;min-width:0}
.list-item .t div{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.85rem}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}

.login{max-width:440px;margin:40px auto}
.cred{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.9rem}
.recall ul{margin:.3em 0 .4em;padding-left:1.1em}
.sol ol{margin:.3em 0;padding-left:1.3em}
.linkbtn{background:none;border:0;padding:0;color:inherit;text-decoration:underline;cursor:pointer;font:inherit}
.kc-pre{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
.flag{color:var(--bad);font-size:.82rem;font-weight:600}

/* ===================== V4.3 : interface de tuteur ===================== */
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.tiny{font-size:.82rem}
.tl{display:grid;grid-template-columns:minmax(220px,300px) minmax(0,1fr);grid-template-areas:"head head" "tutor activity" "progress progress";gap:18px;max-width:1180px;margin:0 auto}
.tl-head{grid-area:head;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;font-family:var(--sans)}
.tl-where{color:var(--muted);font-weight:600}
.tl-badge,.verif-tag{display:inline-flex;align-items:center;gap:6px;border:2px solid var(--focus);color:var(--ink);background:var(--surface);border-radius:999px;padding:3px 12px;font-weight:600;font-size:.9rem}
.tl-badge::before,.verif-tag::before{content:"";width:9px;height:9px;border:2px solid var(--focus);border-radius:50%}
.tl-tutor{grid-area:tutor;align-self:start;display:flex;flex-direction:column;gap:10px}
.tl-avatar{width:132px;height:132px;margin:0 auto}
.tl-state{text-align:center;color:var(--muted);margin:0}
.tl-activity{grid-area:activity;min-width:0;outline:none}
.tl-activity .card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px 24px;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.tl-activity .card.verif{border:2px solid var(--focus)}
.tl-activity .resource{border-left:5px solid var(--gold)}
.tl-activity > * + *{margin-top:14px}
.tl-bubbles{display:flex;flex-direction:column;gap:8px}
.bubble{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:10px 14px;margin:0;line-height:1.45;animation:tl-in .25s ease-out}
.tl-bubbles .bubble:first-child::before{content:"";position:absolute;top:-8px;left:50%;margin-left:-8px;border:8px solid transparent;border-top:0;border-bottom-color:var(--line)}
.tl-hints{display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 20px}
.tl-hints .tl-h{margin:0}
.hint-bubble{border-left:4px solid var(--gold)}
.hint-bubble[data-level="4"]{border-left-color:var(--red)}
.hint-tag{display:block;font-weight:700;font-size:.85rem;color:var(--muted);margin-bottom:2px}
.hint-lead{margin:0 0 6px}
.btn.ask{align-self:flex-start}
.tl-progress{grid-area:progress;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 18px}
.tl-h{font-size:1rem;margin:0 0 10px}
.kc-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px}
.kc{border:1px solid var(--line);border-radius:10px;padding:8px 10px;display:flex;flex-direction:column;gap:2px;background:var(--surface-2)}
.kc.current{border:2px solid var(--ink)}
.kc.current .kc-name::after{content:" ◆";font-size:.75em}
.kc.review{border-style:dashed}
.kc-name{font-weight:600}
.kc-band{font-size:.9rem}
.kc-status{font-size:.82rem;color:var(--muted)}
fieldset.q{border:0;padding:0;margin:0}
fieldset.q legend{padding:0;width:100%}
.avatar{width:100%;height:100%;display:block}
.avatar .bg{fill:var(--red-wash)}
.avatar .jacket{fill:var(--red-dark)}
.avatar .shirt{fill:#F4F1EC}
.avatar .skin{fill:#B9805A}
.avatar .hair{fill:#2E2420}
.avatar .eye{fill:#1E1B19}
.avatar .glasses,.avatar .brow,.avatar .mouth{fill:none;stroke:#1E1B19;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.avatar.state-explaining .mouth{fill:#7A3B2E;stroke-width:2}
.avatar .lapel{fill:none;stroke:#7E030B;stroke-width:2}
.avatar .badge circle:first-child{fill:var(--surface);stroke:var(--ink);stroke-width:2}
.avatar .glyph{fill:none;stroke:var(--ink);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.avatar .dot{fill:var(--ink)}
@keyframes tl-in{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
@media (max-width:820px){
  .tl{grid-template-columns:1fr;grid-template-areas:"head" "tutor" "activity" "progress"}
  .tl-tutor{position:static;display:grid;grid-template-columns:72px 1fr;align-items:start;gap:8px 12px}
  .tl-avatar{width:72px;height:72px;grid-row:span 2}
  .tl-state{text-align:left}
  .tl-bubbles{grid-column:2}
  .tl-bubbles .bubble:first-child::before{display:none}
}
@media (prefers-reduced-motion: reduce){.bubble{animation:none}}

/* V4.3.1 : en-tête de progression, fenêtre « Mon état de connaissances » */
.tl-progress-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.tl-progress-head .tl-h{margin:0}
.kn-open{overflow:hidden}
.kn-overlay{position:fixed;inset:0;z-index:50;background:rgba(20,22,26,.55);display:flex;align-items:flex-start;justify-content:center;overflow-y:auto;padding:24px 16px}
.kn-panel{background:var(--bg);border-radius:16px;max-width:980px;width:100%;padding:22px 24px;box-shadow:0 10px 40px rgba(0,0,0,.25)}
.kn-head{display:flex;justify-content:space-between;align-items:center;gap:12px}
.kn-head h1{margin:0;outline:none}
.kn-legend{background:var(--surface);border-left:4px solid var(--gold);padding:10px 14px;border-radius:8px}
.kn-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.kn-kc{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.kn-kc.current{border:2px solid var(--ink)}
.kn-kc.review{border-style:dashed}
.kn-kc h2{font-size:1.05rem;margin:0 0 6px}
.kn-tag{font-size:.78rem;font-weight:600;border:1px solid var(--ink);border-radius:999px;padding:1px 8px;margin-left:4px}
.kn-label{color:var(--muted)}
.kn-facts{margin:8px 0 0;display:grid;gap:4px}
.kn-facts div{display:flex;justify-content:space-between;gap:10px;border-bottom:1px dotted var(--line);padding:2px 0}
.kn-facts dt{color:var(--muted)}
.kn-facts dd{margin:0;font-weight:600;text-align:right}
/* Barre du haut sur petit écran : retour à la ligne, rappel du parcours masqué (il est affiché sous la barre) */
@media (max-width:640px){
  .top-in{flex-wrap:wrap;gap:8px 10px;padding:10px 16px}
  .top .crumb{display:none}
  .top button{padding:5px 10px;font-size:.85rem}
  .kn-panel{padding:16px}
}

/* Lecture audio : les boutons « Écouter » n'existent pour personne tant que l'option est désactivée */
.say{display:none}
body.audio-on .say{display:inline-flex;align-items:center;gap:4px}
body.audio-on .say::before{content:"";width:0;height:0;border-left:7px solid currentColor;border-top:5px solid transparent;border-bottom:5px solid transparent}
body.audio-on .say[aria-pressed="true"]::before{border:0;width:8px;height:8px;background:currentColor}
.hint-bubble .say{float:right;margin-left:8px}
.verdict .say{float:right;margin-left:8px}
.top button[aria-pressed="true"]{background:rgba(255,255,255,.22)}
.tl-tutor .say{align-self:flex-start}