/* Fiches LaTeX — DA Phreeks Labs (site/index.html), effets légers, champs et boutons renforcés.
   Choix validés sur la maquette du 2026-10-23. */
:root{
  color-scheme:dark;
  --bg:#08070c;
  --txt:#f4f3f8; --muted:#a9a6b6; --dim:#8a8799;
  --violet:#7c5cff; --violet2:#a78bfa; --pink:#e879c9; --blue:#4f7cff;
  --btn:#6845f0; --btn-h:#7655f7;          /* violet plein : texte blanc à 5,5:1 */
  --ok:#4ade80; --ok-bg:rgba(74,222,128,.12); --warn:#fbbf24; --err:#f87171; --err-bg:rgba(248,113,113,.12);
  --card:#100e18; --card-line:rgba(255,255,255,.14);
  --field:#17151f; --field-line:rgba(255,255,255,.30); --field-line-h:rgba(255,255,255,.5);
  --label:#ecebf2; --ghost-line:rgba(255,255,255,.34);
  --ui:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{background:var(--bg);margin:0}
body{color:var(--txt);font:15px/1.55 var(--ui);-webkit-font-smoothing:antialiased;overflow-x:hidden}
.wrap{max-width:1440px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
:focus-visible{outline:3px solid var(--violet2);outline-offset:2px;border-radius:8px}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:var(--violet2)}

/* un seul halo discret */
.glow{position:fixed;width:520px;height:520px;border-radius:50%;background:#3b1f8f;top:-200px;right:-140px;filter:blur(140px);opacity:.22;pointer-events:none;z-index:0}
main,header,footer{position:relative;z-index:1}

header .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 16px;min-height:64px;padding-block:10px}
.crumb{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted)}
.crumb b{color:var(--txt);font-weight:600}
.logo{font:500 15px var(--mono);letter-spacing:-.02em;color:var(--txt);text-decoration:none}
.logo span{color:var(--violet2)}
.privacy{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px}
.privacy svg{color:var(--ok);flex:none}

.intro{padding-block:18px 24px}
.intro h1{margin:0;font-size:clamp(28px,3.4vw,40px);line-height:1.08;letter-spacing:-.03em;font-weight:700;text-wrap:balance}
.grad{background:linear-gradient(90deg,var(--blue),var(--violet) 55%,var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent}
.intro p{margin:10px 0 0;color:var(--muted);max-width:640px}

.app{display:grid;grid-template-columns:minmax(0,430px) minmax(0,1fr);gap:22px;padding-bottom:24px;align-items:start}
@media (max-width:1020px){.app{grid-template-columns:minmax(0,1fr)}}
.col{display:flex;flex-direction:column;gap:16px;min-width:0}
.card{background:var(--card);border:1px solid var(--card-line);border-radius:18px;padding:20px;min-width:0}
.step-h{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.num{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font:600 13px var(--mono);background:rgba(124,92,255,.18);color:#d9cffd;border:1px solid rgba(167,139,250,.45)}
.step-h h2{margin:0;font-size:16px;font-weight:600;letter-spacing:-.01em}

/* choix à boutons (fournisseur, type de fiche) */
.choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
@media (max-width:480px){.choices.prov{grid-template-columns:minmax(0,1fr)}}
.choices button{position:relative;text-align:left;padding:11px 12px;border-radius:12px;border:1.5px solid var(--field-line);background:var(--field);display:flex;flex-direction:column;gap:2px;min-height:60px;transition:border-color .2s,background .2s}
.choices button:hover:not(:disabled){border-color:var(--field-line-h)}
.choices button b{font-size:14px;font-weight:600}
.choices button small{font-size:12px;color:var(--muted)}
.choices button[aria-pressed="true"]{border-color:var(--violet2);background:rgba(124,92,255,.16);box-shadow:0 0 0 1px var(--violet2) inset}
.choices button:disabled{opacity:.55;cursor:not-allowed;border-style:dashed;padding-right:64px}
.soon{position:absolute;top:9px;right:9px;font:500 10px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--warn)}
.panel{margin-top:14px;display:flex;flex-direction:column;gap:12px}

.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field label,.lbl{font-size:13px;font-weight:600;color:var(--label)}
.inp{width:100%;min-width:0;height:44px;padding:0 12px;border-radius:10px;border:1.5px solid var(--field-line);background:var(--field);color:var(--txt);outline:none;transition:border-color .2s,box-shadow .2s}
.inp::placeholder{color:#8f8ba0}
.inp:hover{border-color:var(--field-line-h)}
.inp:focus{border-color:var(--violet2);box-shadow:0 0 0 3px rgba(167,139,250,.35)}
.inp.bad{border-color:var(--err);box-shadow:0 0 0 3px rgba(248,113,113,.22)}
textarea.inp{height:auto;min-height:44px;padding:10px 12px;resize:vertical}
select.inp{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#cfccda 50%),linear-gradient(135deg,#cfccda 50%,transparent 50%);background-position:calc(100% - 18px) 19px,calc(100% - 13px) 19px;background-size:5px 5px;background-repeat:no-repeat;padding-right:34px}
select.inp option{background:#17151f}
.keyrow{display:flex;gap:8px}
.keyrow .inp{font-family:var(--mono);font-size:13px}
.hint{font-size:12.5px;color:var(--muted)}
.err-msg{font-size:12.5px;color:var(--err);font-weight:500}
.how{margin:0;padding-left:20px;font-size:13px;color:var(--muted);display:grid;gap:3px}
.how b{color:var(--txt);font-weight:600}
.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}
.pill-ok{background:var(--ok-bg);color:var(--ok)}
.pill-info{background:rgba(124,92,255,.16);color:#cdbffd}
.pill-err{background:var(--err-bg);color:var(--err)}
.check{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--label)}
.check input{width:18px;height:18px;accent-color:var(--violet);flex:none}
details.adv summary{cursor:pointer;font-size:13px;color:var(--muted);font-weight:600}
details.adv[open] summary{margin-bottom:10px}
details.adv .field input[type=range]{accent-color:var(--violet)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:12px;font-weight:600;font-size:14px;border:0;text-decoration:none;transition:background .2s,border-color .2s,transform .2s var(--ease)}
.btn-primary{background:var(--btn);color:#fff;box-shadow:0 0 0 1px rgba(255,255,255,.14) inset}
.btn-primary:hover:not(:disabled){background:var(--btn-h);transform:translateY(-1px)}
.btn:disabled{background:#2a2738;color:#8f8ba0;box-shadow:none;border-color:transparent;cursor:not-allowed;transform:none}
.btn-ghost{background:transparent;border:1.5px solid var(--ghost-line);color:var(--txt)}
.btn-ghost:hover:not(:disabled){border-color:rgba(255,255,255,.6);background:rgba(255,255,255,.04)}
.btn-sm{min-height:36px;padding:0 12px;font-size:13px;border-radius:10px}
.btn-icon{width:44px;padding:0;flex:none}
.btn-block{width:100%}
.btn-light{background:#fff;color:#0b0a10}
.btn-light:hover{background:#e9e7f0}
.btn-danger{background:transparent;border:1.5px solid rgba(248,113,113,.5);color:#fecaca}

/* documents */
.docs{display:flex;flex-direction:column;gap:12px;margin-top:12px}
.doc{border:1.5px solid var(--field-line);border-radius:14px;padding:14px;background:var(--field);display:flex;flex-direction:column;gap:10px;min-width:0}
.doc-h{display:flex;align-items:center;gap:10px;min-width:0}
.doc-h .ic{flex:none;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:rgba(124,92,255,.16);color:#cdbffd}
.doc-h .nm{min-width:0;flex:1;display:flex;flex-direction:column}
.doc-h .nm b{font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.doc-h .nm small{color:var(--muted);font-size:12px}
.doc-h .role{font-size:12px;color:var(--muted);flex:none}
.drop{border:1.5px dashed var(--field-line-h);border-radius:14px;padding:16px 14px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:6px;cursor:pointer;transition:background .2s,border-color .2s}
.drop:hover,.drop.over{border-color:var(--violet2);background:rgba(124,92,255,.08)}
.drop b{font-size:13.5px}
.drop small{color:var(--muted);font-size:12px;max-width:320px}
.thumbs{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px}
.th{flex:none;width:52px;display:flex;flex-direction:column;align-items:center;gap:4px;font:500 11px var(--mono);color:var(--dim);background:none;border:0;padding:0}
.th img,.th i{display:block;width:52px;height:70px;object-fit:cover;object-position:top;border-radius:4px;background:#2a2737;border:2px solid transparent;opacity:.45}
.th.on img,.th.on i{opacity:1;border-color:var(--violet2)}
.th.on{color:#d9cffd}
.imgprev{max-height:160px;width:auto;max-width:100%;border-radius:8px;align-self:flex-start}

.gen{display:flex;flex-direction:column;gap:10px}
.cost{display:flex;flex-wrap:wrap;justify-content:space-between;gap:4px 10px;font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.progress{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:13px}
.progress li{display:flex;align-items:center;gap:8px;color:var(--txt)}
.progress li small{color:var(--muted)}
.progress .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);flex:none}
.progress li.run .dot{background:var(--violet2);animation:pulse 1s ease-in-out infinite}
.progress li.ko .dot{background:var(--err)}
@keyframes pulse{50%{opacity:.35}}
.alert{border:1px solid rgba(248,113,113,.45);background:var(--err-bg);color:#fecaca;border-radius:12px;padding:10px 12px;font-size:13.5px}

/* résultat */
.res-h{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-bottom:14px}
.res-h h2{margin:0;font-size:16px;font-weight:600}
.res-h .meta{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.seg{display:inline-flex;border:1px solid rgba(255,255,255,.22);border-radius:10px;padding:2px;background:rgba(0,0,0,.25)}
.seg button{border:0;background:none;padding:5px 11px;border-radius:8px;font-size:13px;color:#cfccda}
.seg button[aria-pressed="true"]{background:#f4f3f8;color:#0b0a10;font-weight:600}
.res-h .seg{margin-left:auto}
.title-row{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;margin-bottom:12px}
.title-row .field{flex:1 1 240px}
.panes{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px}
.panes.only-preview,.panes.only-code{grid-template-columns:minmax(0,1fr)}
.panes.only-preview .pane-code,.panes.only-code .pane-prev{display:none}
@media (max-width:1280px){.panes:not(.only-code):not(.only-preview){grid-template-columns:minmax(0,1fr)}}
.pane-code,.pane-prev{min-width:0;display:flex;flex-direction:column;gap:8px}
.editor{display:flex;height:640px;border:1.5px solid var(--field-line);border-radius:12px;background:#0c0b12;overflow:hidden}
.editor:focus-within{border-color:var(--violet2);box-shadow:0 0 0 3px rgba(167,139,250,.3)}
.gutter{flex:none;width:46px;padding:12px 8px 12px 0;text-align:right;font:12.5px/20px var(--mono);color:#6b677d;overflow:hidden;user-select:none;background:#0a0910;border-right:1px solid rgba(255,255,255,.07);white-space:pre}
.gutter .e{color:var(--err);font-weight:600}
.code{flex:1;min-width:0;border:0;outline:none;resize:none;background:transparent;color:#e7e5ef;padding:12px 14px;font:12.5px/20px var(--mono);white-space:pre;overflow:auto;tab-size:2}
.lint{display:flex;flex-direction:column;gap:6px;align-items:flex-start}
.lint ul{list-style:none;margin:0;padding:0;display:grid;gap:4px;width:100%}
.lint li button{width:100%;text-align:left;border:1px solid rgba(248,113,113,.35);background:var(--err-bg);color:#fecaca;border-radius:8px;padding:6px 10px;font-size:12.5px}
.lint li button b{font-family:var(--mono);font-weight:500;color:var(--err);margin-right:6px}
.row-btns{display:flex;flex-wrap:wrap;gap:8px}
.paper-wrap{height:640px;overflow:auto;border-radius:12px;background:#1b1925;border:1px solid var(--card-line);padding:18px}
.exports{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.exports .btn{flex:1 1 150px;white-space:nowrap}
.empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;min-height:320px;color:var(--muted);border:1.5px dashed var(--card-line);border-radius:14px;padding:24px}
.empty b{color:var(--txt);font-size:15px}

/* la feuille : rendu fidèle au préambule figé (template/preamble.tex) */
.sheet{background:#fff;color:#161616;font:17px/1.5 KaTeX_Main,"Latin Modern Roman","Times New Roman",serif;max-width:760px;margin:0 auto;padding:44px 48px;border-radius:4px;box-shadow:0 20px 50px -20px rgba(0,0,0,.7)}
@media (max-width:640px){.sheet{padding:24px 18px;font-size:15.5px}}
.sheet .par{margin:.6em 0}
.sheet .pb{display:block;height:.6em}
.sheet h3.ex{font-size:1.44em;font-weight:700;margin:.8em 0 .3em;line-height:1.2}
.sheet h2.fi{font-size:1.73em;font-weight:700;text-align:center;margin:.2em 0 .4em}
.sheet h3.sec{font-size:1.2em;font-weight:700;margin:1em 0 .3em}
.sheet h4.sub{font-size:1.05em;font-weight:700;margin:.8em 0 .2em}
.sheet hr{border:0;border-top:1px solid #161616;margin:0 0 .8em}
.sheet ol,.sheet ul{margin:.4em 0;padding-left:1.6em}
.sheet ol>li::marker{font-weight:700}
.sheet ol>li+li{margin-top:1.2em}
.sheet .fa{border:1px solid rgb(90,160,70);border-radius:2px;padding:5px 9px;margin:.6em 0}
.sheet .me{border:1px solid rgba(50,100,170,.7);background:rgba(50,100,170,.04);border-radius:2px;padding:5px 9px;margin:.5em 0}
.sheet .me>strong:first-child{color:rgb(50,100,170)}
.sheet .at{color:rgb(150,30,30)}
.sheet .katex{font-size:1.05em}
.sheet .katex-display{margin:.7em 0;overflow-x:auto;overflow-y:hidden;padding-block:2px}
.sheet .unk,.sheet .mx-err{font-family:var(--mono);font-size:.8em;background:#fde2e2;color:#9b1c1c;padding:1px 4px;border-radius:3px}
.sheet .center{text-align:center}
.sheet code{font-family:var(--mono);font-size:.85em}

/* historique */
.hist{margin-top:0}
.hist ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.hist li{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;padding:10px 12px;border:1px solid var(--card-line);border-radius:12px;background:var(--field)}
.hist li .t{flex:1 1 220px;min-width:0}
.hist li .t b{display:block;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hist li .t small{color:var(--muted);font-size:12px}

footer{padding-block:24px 40px;color:var(--dim);font-size:12.5px}
footer .wrap{display:flex;flex-direction:column;gap:6px}

.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#f4f3f8;color:#0b0a10;font-weight:600;font-size:13.5px;padding:10px 16px;border-radius:12px;box-shadow:0 20px 40px -10px rgba(0,0,0,.6);transition:all .3s var(--ease);z-index:60;max-width:calc(100% - 32px)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}