/* ============================================================
   Département d'Économie Rurale et de Gestion (DERG) — ESA Mograne
   Couleurs de l'école : vert #0e5c3a / or #f5a623. Responsive (mobile d'abord), mode sombre automatique.
   ============================================================ */
:root{
  --g:#0e5c3a; --g2:#13834f; --g3:#e8f5ee; --gold:#f5a623; --gold2:#ffd27a;
  --ink:#10231a; --tx:#2b3a33; --mu:#5d6d65; --ln:#dfe8e3; --bg:#ffffff; --bg2:#f5f9f6; --card:#ffffff;
  --sh:0 10px 30px rgba(14,92,58,.10); --sh2:0 18px 40px rgba(14,92,58,.16);
  --r:18px; --wrap:1180px;
}
@media (prefers-color-scheme:dark){
  :root{--ink:#eaf4ee;--tx:#cfe0d6;--mu:#93a99c;--ln:#24382d;--bg:#0c1611;--bg2:#101d16;--card:#13231a;--g3:#163325;--sh:0 10px 30px rgba(0,0,0,.35);--sh2:0 18px 40px rgba(0,0,0,.45)}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--tx);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--g2)}
h1,h2,h3{color:var(--ink);line-height:1.2;margin:0 0 .5em}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-family:"Playfair Display",Georgia,serif}
h3{font-size:1.08rem}
.wrap{width:min(100% - 32px,var(--wrap));margin-inline:auto}
.skip{position:absolute;left:-999px;top:0;background:var(--gold);color:#000;padding:8px 14px;z-index:99}.skip:focus{left:8px}
.muted{color:var(--mu)}

/* ---------- barre de navigation ---------- */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--ln)}
@media (prefers-color-scheme:dark){.topbar{background:rgba(12,22,17,.85)}}
.topbar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand img{width:44px;height:44px;border-radius:50%;background:#fff;object-fit:contain}
.brand-mark{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--g),var(--g2));color:#fff;font-weight:800}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}.brand-txt b{font-size:1.15rem;letter-spacing:.06em}.brand-txt small{color:var(--mu);font-size:.78rem}
.nav{display:flex;align-items:center;gap:4px}
.nav a{padding:8px 12px;border-radius:999px;text-decoration:none;color:var(--tx);font-weight:600;font-size:.92rem;transition:background .2s,color .2s}
.nav a:hover,.nav a.on{background:var(--g3);color:var(--g)}
.nav a.nav-cta{background:var(--g);color:#fff;margin-left:6px}.nav a.nav-cta:hover{background:var(--g2);color:#fff}
.burger{display:none;width:44px;height:44px;border:0;background:transparent;border-radius:10px;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:10px}
.burger span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .25s}
@media (max-width:900px){
  .burger{display:flex}
  .nav{position:absolute;top:66px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;padding:10px 16px 16px;background:var(--bg);border-bottom:1px solid var(--ln);box-shadow:var(--sh);display:none}
  .nav.open{display:flex}.nav a{padding:12px 14px}.nav a.nav-cta{margin:6px 0 0;text-align:center}
  .burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .burger[aria-expanded="true"] span:nth-child(2){opacity:0}
  .burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* ---------- bandeau d'accueil ---------- */
.hero{position:relative;color:#fff;padding:clamp(70px,11vw,130px) 0 clamp(70px,9vw,110px);background:linear-gradient(120deg,rgba(8,48,30,.92),rgba(14,92,58,.78) 55%,rgba(19,131,79,.55));background-size:cover;background-position:center;overflow:hidden}
.hero::after{content:"";position:absolute;inset:auto -10% -1px -10%;height:clamp(36px,6vw,70px);background:var(--bg);border-radius:50% 50% 0 0/100% 100% 0 0}
.hero-in{position:relative;z-index:1;max-width:900px}
.hero-school{display:inline-block;margin:0 0 14px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);font-size:.85rem;font-weight:600}
.hero h1{color:#fff;font-family:"Playfair Display",Georgia,serif;font-size:clamp(2rem,5vw,3.4rem);margin:0 0 14px}
.hero-sigle{color:var(--gold2)}
.hero-lead{font-size:clamp(1rem,1.6vw,1.2rem);max-width:720px;opacity:.95;margin:0 0 26px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:700;text-decoration:none;transition:transform .2s,box-shadow .2s,background .2s}
.btn:hover{transform:translateY(-2px)}
.btn-gold{background:var(--gold);color:#1d1200;box-shadow:0 8px 20px rgba(245,166,35,.35)}.btn-gold:hover{background:var(--gold2)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.45)}.btn-ghost:hover{background:rgba(255,255,255,.22)}
.btn-sm{padding:9px 16px;font-size:.9rem}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:0;max-width:760px}
.stats div{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:14px;padding:14px 16px;backdrop-filter:blur(4px)}
.stats dt{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;color:var(--gold2);line-height:1}
.stats dd{margin:4px 0 0;font-size:.85rem;opacity:.9}
@media (max-width:640px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* ---------- sections ---------- */
.section{padding:clamp(56px,8vw,96px) 0}
.section.alt{background:var(--bg2)}
.section-head{text-align:center;max-width:720px;margin:0 auto 30px}
.section-head p{color:var(--mu);margin:0}
.kicker{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--g2);margin-bottom:8px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(22px,4vw,48px);align-items:start}
@media (max-width:860px){.grid-2{grid-template-columns:1fr}}
.lead-p{font-size:1.04rem}

/* domaines d'expertise */
.domains{display:grid;gap:12px}
.domain{display:flex;align-items:center;gap:14px;padding:14px 16px;background:var(--card);border:1px solid var(--ln);border-radius:14px;box-shadow:var(--sh);font-weight:600;color:var(--ink);transition:transform .2s,box-shadow .2s}
.domain:hover{transform:translateX(4px);box-shadow:var(--sh2)}
.domain-ic{width:44px;height:44px;flex:0 0 auto;border-radius:12px;display:grid;place-items:center;font-size:1.35rem;background:var(--g3)}

/* bande photo */
.photo-band{position:relative;margin:0 0 34px;min-height:220px;border-radius:var(--r);overflow:hidden;background:linear-gradient(0deg,rgba(8,48,30,.8),rgba(8,48,30,.05) 60%);background-size:cover;background-position:center;box-shadow:var(--sh)}
.photo-band figcaption{position:absolute;left:20px;right:20px;bottom:16px;color:#fff;font-weight:600;font-size:1.02rem;text-shadow:0 2px 8px rgba(0,0,0,.4)}
@media (min-width:860px){.photo-band{min-height:300px}}

/* panneaux Formation / Recherche */
.panel{background:var(--card);border:1px solid var(--ln);border-radius:var(--r);padding:clamp(20px,3vw,32px);box-shadow:var(--sh);height:100%}
.panel-head{display:flex;gap:14px;align-items:center;margin-bottom:10px}.panel-head h2{margin:0;font-size:clamp(1.3rem,2.2vw,1.7rem)}.panel-head .kicker{margin:0}
.panel-ic{width:54px;height:54px;flex:0 0 auto;border-radius:16px;display:grid;place-items:center;font-size:1.6rem;background:linear-gradient(135deg,var(--g),var(--g2))}
.panel-ic.ic-2{background:linear-gradient(135deg,#c77d0a,var(--gold))}
.ticks{list-style:none;padding:0;margin:14px 0}
.ticks li{position:relative;padding:6px 0 6px 30px}
.ticks li::before{content:"✓";position:absolute;left:0;top:6px;width:20px;height:20px;border-radius:50%;background:var(--g3);color:var(--g);font-weight:800;font-size:.75rem;display:grid;place-items:center}
.note{background:var(--g3);border-left:4px solid var(--g2);padding:12px 14px;border-radius:0 12px 12px 0;margin:16px 0 0}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{padding:7px 13px;border-radius:999px;background:#fff6e6;color:#8a5300;font-weight:600;font-size:.86rem;border:1px solid #f9dca8}
@media (prefers-color-scheme:dark){.tag{background:#2c2312;color:#ffd27a;border-color:#4a3a18}}

/* direction */
.director{position:relative;display:flex;align-items:center;gap:clamp(18px,3vw,32px);padding:clamp(24px,4vw,40px);border-radius:var(--r);color:#fff;overflow:hidden;
  background:linear-gradient(110deg,rgba(8,48,30,.95),rgba(14,92,58,.88) 60%,rgba(14,92,58,.6));background-size:cover;background-position:center;box-shadow:var(--sh2)}
.director h2{color:#fff;margin:0 0 8px}.director .kicker{color:var(--gold2)}
.director .mail{color:#fff;background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.3)}
@media (max-width:600px){.director{flex-direction:column;text-align:center}.director .mails{justify-content:center}}

/* avatars et e-mails */
.avatar{width:56px;height:56px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--g),var(--g2));box-shadow:0 0 0 4px var(--g3)}
.avatar-xl{width:110px;height:110px;font-size:2.2rem;background:linear-gradient(135deg,var(--gold),#c77d0a);box-shadow:0 0 0 6px rgba(255,255,255,.18)}
.mails{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.mail{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;font-size:.84rem;text-decoration:none;color:var(--g);background:var(--g3);border:1px solid transparent;max-width:100%;overflow-wrap:anywhere}
.card-mails{margin:-2px 0 12px}.card-mails .mail{font-size:.8rem;padding:4px 10px}.small{font-size:.85rem}
.mail:hover{border-color:var(--g2)}

/* outils de filtre */
.toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:center;margin-bottom:10px}
.search{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--ln);border-radius:999px;padding:0 16px;min-width:min(100%,320px);box-shadow:var(--sh)}
.search input{border:0;outline:0;background:transparent;font:inherit;color:var(--ink);padding:12px 0;width:100%}
.chips{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.chip{border:1px solid var(--ln);background:var(--card);color:var(--tx);padding:7px 13px;border-radius:999px;font:inherit;font-size:.84rem;font-weight:600;cursor:pointer;transition:all .2s}
.chip:hover{border-color:var(--g2);color:var(--g)}
.chip.on{background:var(--g);border-color:var(--g);color:#fff}
.result-count{text-align:center;color:var(--mu);font-size:.9rem;margin:6px 0 20px;min-height:1.4em}
.empty{text-align:center;color:var(--mu);padding:30px}

/* cartes enseignants */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,340px),1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--ln);border-radius:var(--r);padding:20px;box-shadow:var(--sh);transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.card:target{outline:3px solid var(--gold);outline-offset:3px}
.card-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:12px}
.card-id{flex:1;min-width:0}.card-id h3{margin:0 0 2px}
.badge{display:inline-block;font-size:.72rem;font-weight:800;color:#8a5300;background:#fff3d6;padding:2px 9px;border-radius:999px;margin-bottom:2px}
.count{flex:0 0 auto;text-align:center;font-weight:800;font-size:1.4rem;color:var(--g);line-height:1}.count small{display:block;font-size:.66rem;font-weight:600;color:var(--mu)}
.modules{list-style:none;margin:0;padding:0;border-top:1px solid var(--ln)}
.modules li{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;padding:8px 0;border-bottom:1px dashed var(--ln);font-size:.92rem}
.modules li:last-child{border-bottom:0}
.modules li.dim{opacity:.35}
.mod{color:var(--ink)}
.cls{display:flex;flex-wrap:wrap;align-items:flex-start;align-content:flex-start;gap:4px;justify-content:flex-end;flex:0 0 auto;max-width:45%;padding-top:1px}
.cl{display:inline-block;font-size:.72rem;font-weight:700;line-height:1.5;padding:1px 8px;border-radius:999px;background:var(--g3);color:var(--g);white-space:nowrap}
.modules li.hit .cl{background:var(--g);color:#fff}
mark{background:#ffe9a8;color:inherit;border-radius:3px;padding:0 1px}

/* accordéon par classe */
.accordion{display:grid;gap:10px;max-width:900px;margin:0 auto}
.acc{background:var(--card);border:1px solid var(--ln);border-radius:14px;box-shadow:var(--sh);overflow:hidden}
.acc summary{display:flex;align-items:center;gap:12px;padding:14px 18px;cursor:pointer;list-style:none;font-weight:700}
.acc summary::-webkit-details-marker{display:none}
.acc-cl{min-width:76px;text-align:center;padding:4px 10px;border-radius:10px;background:var(--g);color:#fff}
.acc-n{color:var(--mu);font-weight:600;flex:1}
.acc-chev{transition:transform .25s;color:var(--g)}
.acc[open] .acc-chev{transform:rotate(180deg)}
.tbl{width:100%;border-collapse:collapse;font-size:.93rem}
.tbl th,.tbl td{text-align:left;padding:10px 18px;border-top:1px solid var(--ln)}
.tbl th{background:var(--bg2);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--mu)}
.tbl a{text-decoration:none;font-weight:600}
@media (max-width:560px){.tbl th,.tbl td{padding:9px 12px}}

/* pied de page */
.footer{background:#08301e;color:#cfe3d7;padding:46px 0 18px}
.footer-in{display:grid;grid-template-columns:2fr 1.4fr 1fr;gap:28px}
.footer b{color:#fff}.footer p{margin:6px 0 0;font-size:.92rem}
.footer .mail{color:#fff;background:rgba(255,255,255,.1)}
.footer-links{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.totop{color:#cfe3d7}
.footer .footer-copy{border-top:1px solid rgba(255,255,255,.12);margin:26px auto 0;padding-top:14px;font-size:.82rem;color:#9fbfae}
@media (max-width:760px){.footer-in{grid-template-columns:1fr}}

/* apparition au défilement */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}*{transition:none!important}}
.no-js .reveal{opacity:1;transform:none}

/* impression */
@media print{.topbar,.toolbar,.hero-btns,.footer-links,.burger{display:none}.hero{background:#0e5c3a;color:#fff}.reveal{opacity:1;transform:none}.acc{break-inside:avoid}.card{break-inside:avoid;box-shadow:none}}

/* bandeau animé du département (remplace la photo) */
.motto{position:relative;overflow:hidden;margin:0 0 34px;padding:clamp(28px,4vw,46px) clamp(20px,4vw,48px) 0;border-radius:var(--r);color:#fff;
  background:linear-gradient(120deg,#08301e 0%,#0e5c3a 45%,#13834f 75%,#c77d0a 140%);background-size:200% 200%;animation:motto-bg 14s ease-in-out infinite alternate;box-shadow:var(--sh2)}
@keyframes motto-bg{from{background-position:0% 50%}to{background-position:100% 50%}}
.motto::before{content:"";position:absolute;width:340px;height:340px;right:-90px;top:-140px;border-radius:50%;background:radial-gradient(circle,rgba(245,166,35,.35),transparent 70%);animation:motto-glow 6s ease-in-out infinite alternate}
@keyframes motto-glow{from{transform:translate(0,0) scale(1)}to{transform:translate(-40px,30px) scale(1.15)}}
.motto-sigle{position:absolute;right:clamp(10px,3vw,36px);bottom:28px;font-family:"Playfair Display",Georgia,serif;font-size:clamp(4rem,12vw,9rem);font-weight:700;line-height:1;color:rgba(255,255,255,.07);letter-spacing:.04em;pointer-events:none}
.motto-line{position:relative;margin:0;font-family:"Playfair Display",Georgia,serif;font-size:clamp(1.35rem,3vw,2.3rem);line-height:1.25;min-height:2.5em}
.motto-word{color:var(--gold2);background:linear-gradient(90deg,#ffd27a,#f5a623);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.motto-caret{display:inline-block;width:3px;height:1em;margin-left:4px;vertical-align:-.12em;background:var(--gold2);animation:caret 1s steps(1) infinite}
@keyframes caret{50%{opacity:0}}
.motto-sub{position:relative;margin:10px 0 22px;max-width:640px;opacity:.88;font-size:1rem}
.ticker{position:relative;margin:0 calc(-1 * clamp(20px,4vw,48px));padding:12px 0;background:rgba(0,0,0,.18);border-top:1px solid rgba(255,255,255,.12);overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.ticker-track{display:flex;gap:34px;width:max-content;animation:ticker 45s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
.ticker span{white-space:nowrap;font-weight:600;font-size:.92rem;color:#e6f3ec}
@keyframes ticker{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.motto,.motto::before,.ticker-track,.motto-caret{animation:none!important}}