/* Chatbot & IA agentique — M2 Tourisme IFIS */
:root{
  --navy:#1F4E79; --teal:#1FA89A; --violet:#7B5CC6; --rose:#C7357D;
  --ink:#1d2733; --muted:#5b6876; --line:#dfe5ec; --bg:#f5f7fa; --paper:#fff;
  --radius:10px; --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Apple Color Emoji","Segoe UI Emoji",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 var(--font);color:var(--ink);background:var(--bg)}
a{color:var(--navy)}
img{max-width:100%;height:auto}

/* barre du haut */
.top{position:sticky;top:0;z-index:20;background:var(--navy);color:#fff;box-shadow:0 2px 10px rgba(0,0,0,.15)}
.top-in{max-width:1280px;margin:auto;display:flex;align-items:center;gap:16px;padding:10px 16px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:700;line-height:1.15}
.brand small{display:block;font-weight:400;opacity:.8;font-size:12px}
.logo{display:grid;place-items:center;width:36px;height:36px;border-radius:9px;background:var(--teal);font-size:14px;letter-spacing:.5px}
nav.main{margin-left:auto;display:flex;gap:4px;flex-wrap:wrap}
nav.main a{color:#fff;text-decoration:none;padding:8px 12px;border-radius:7px;font-size:15px;opacity:.88}
nav.main a:hover{background:rgba(255,255,255,.12);opacity:1}
nav.main a[aria-current]{background:rgba(255,255,255,.18);opacity:1;font-weight:600}
.menu{display:none;margin-left:auto;background:none;border:1px solid rgba(255,255,255,.4);color:#fff;font-size:20px;border-radius:7px;padding:4px 10px;cursor:pointer}

/* mise en page */
.wrap{max-width:1280px;margin:auto;padding:24px 16px 48px}
.wrap.has-toc{display:grid;grid-template-columns:290px minmax(0,1fr);gap:28px;align-items:start}
main{min-width:0;max-width:900px;width:100%}
.wrap:not(.has-toc) main{margin:auto;max-width:1000px}

/* sommaire */
.toc{position:sticky;top:76px;max-height:calc(100vh - 92px);overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:12px 8px 12px 12px;font-size:14px}
.toc summary{font-weight:700;color:var(--navy);cursor:pointer;padding:2px 4px 8px;list-style:none}
.toc summary::-webkit-details-marker{display:none}
.toc ol{list-style:none;margin:0;padding:0}
.toc li a{display:block;text-decoration:none;color:var(--ink);padding:5px 8px;border-radius:6px;line-height:1.35}
.toc li a:hover{background:#eef3f8}
.toc li a.on{background:#e3edf7;color:var(--navy);font-weight:600}
.toc li.l1>a{font-weight:700;color:var(--navy);margin-top:6px;font-size:13px;text-transform:none}
.toc li.l2>a{padding-left:16px}

/* en-tête de document */
.doc-head{background:linear-gradient(135deg,var(--navy),#2c6a9f);color:#fff;border-radius:var(--radius);padding:28px 26px;margin-bottom:22px}
.doc-head h1{margin:0;font-size:clamp(24px,4vw,34px);line-height:1.2}
.doc-head .sub{margin:6px 0 0;opacity:.9;font-size:17px}

/* texte */
main p{margin:.45em 0;white-space:pre-wrap;tab-size:4;overflow-wrap:break-word}
main p.c{text-align:center}
main p.mono{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;font-size:14px;line-height:1.45;margin:0;overflow-wrap:normal;white-space:pre;overflow-x:auto}
main p.r{text-align:right}
main p.li{display:flex;gap:.5em;padding-left:.4em}
main p.li .mk{flex:none;min-width:1em;color:var(--muted)}
h2.chap{margin:42px 0 14px;padding:14px 18px;border-radius:var(--radius);background:var(--ink);color:#fff;font-size:clamp(17px,2.4vw,21px);letter-spacing:.3px}
h3.part{margin:30px 0 14px;padding-bottom:8px;border-bottom:3px solid var(--teal);color:var(--navy);font-size:clamp(20px,3vw,26px);line-height:1.3}
main h3{color:var(--navy);margin:22px 0 8px}

/* bandeaux de section (tableaux 1×1 sombres) */
.band{color:#fff;border-radius:var(--radius);padding:12px 18px;margin:34px 0 14px;font-size:clamp(17px,2.4vw,21px);line-height:1.3}
.band p{margin:0}
.band.sm{font-size:17px;font-weight:700;margin:22px 0 10px;padding:10px 16px}
.band.sm p+p{font-weight:400;font-size:15px;margin-top:4px}

/* encadrés */
.bx{margin:16px 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);border-left:5px solid var(--ac);background:var(--paper);box-shadow:0 1px 3px rgba(20,40,60,.05)}
.bx-h{color:#fff;padding:9px 16px;font-weight:700}
.bx-h p{margin:.1em 0}
.bx-b{padding:12px 16px}
.bx-b:empty{display:none}
.bx .bx{margin:10px 0}

/* figures */
figure.img{margin:12px 0;text-align:center}
figure.img img{border-radius:6px;border:1px solid var(--line);background:#fff}

/* tableaux */
.tw{overflow-x:auto;margin:14px 0;border-radius:var(--radius);border:1px solid var(--line);background:var(--paper)}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{border:1px solid var(--line);padding:8px 10px;vertical-align:top;text-align:left;hyphens:auto}
@media (max-width:760px){.tw table.n4,.tw table.n5{min-width:600px}.tw table.n3{min-width:440px}}
th p,td p{margin:.2em 0}
th{font-weight:700}

/* accueil */
.hero{background:linear-gradient(135deg,var(--navy),#2c6a9f 60%,var(--teal));color:#fff;border-radius:16px;padding:42px 30px;margin-bottom:24px}
.hero .kicker{margin:0 0 8px;opacity:.85;font-size:14px;letter-spacing:.4px;text-transform:uppercase}
.hero h1{margin:0;font-size:clamp(30px,6vw,46px);line-height:1.1}
.hero .lead{max-width:680px;font-size:18px;opacity:.95;margin:14px 0 0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.cards.two{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{display:flex;flex-direction:column;gap:6px;background:var(--paper);border:1px solid var(--line);border-top:5px solid var(--ac);border-radius:var(--radius);padding:20px;text-decoration:none;color:var(--ink);transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(20,40,60,.1)}
.card .ic{font-size:28px}
.card h2{margin:4px 0 0;font-size:20px;color:var(--ac)}
.card p{margin:0;color:var(--muted);flex:1}
.card .go{font-weight:600;color:var(--ac);margin-top:8px}
.steps{margin-top:28px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.steps h2{margin:0 0 14px;font-size:19px;color:var(--navy)}
.steps ol{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
.steps li{background:#f0f5fa;border-radius:8px;padding:12px 14px;display:flex;flex-direction:column}
.steps li b{color:var(--navy)}
.steps li span{color:var(--muted)}

.foot{text-align:center;color:var(--muted);font-size:13px;padding:20px 16px 30px}
.totop{position:fixed;right:16px;bottom:16px;width:42px;height:42px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;text-decoration:none;font-size:20px;box-shadow:0 3px 10px rgba(0,0,0,.2);opacity:.85}

/* mobile */
@media (max-width:900px){
  .wrap.has-toc{display:block}
  .toc{position:static;max-height:none;margin-bottom:16px}
  .toc details:not([open]){padding-bottom:0}
  .toc summary{padding-bottom:2px}
  .toc details[open] summary{padding-bottom:8px}
}
@media (max-width:760px){
  .menu{display:block}
  nav.main{display:none;position:absolute;left:0;right:0;top:100%;background:var(--navy);flex-direction:column;padding:8px 16px 14px}
  body.nav-open nav.main{display:flex}
  .top-in{position:relative}
  .doc-head{padding:22px 18px}
  .hero{padding:30px 20px}
  .bx-b{padding:10px 12px}
  table{font-size:14px}
  main p.mono{white-space:pre-wrap;font-size:12px;overflow-wrap:anywhere}
}

/* impression */
@media print{
  .top,.toc,.totop,.foot{display:none!important}
  .wrap.has-toc{display:block}
  body{background:#fff}
  .bx,.tw,figure.img{break-inside:avoid}
  *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}