:root{
  --navy:#0F172A;--amber:#D97706;--emerald:#059669;
  --bg:#F8FAFC;--surface:#fff;--surface2:#EEF2F7;--text:#0F172A;--muted:#526077;--line:#DDE3EC;--accent:#B45309;--accent-bg:#FEF3C7;
  --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06);
  --serif:'Playfair Display',Georgia,serif;--sans:'Inter',system-ui,sans-serif;
  --r:16px;--hh:64px;
}
:root[data-theme=dark]{
  --bg:#0B1120;--surface:#111A2E;--surface2:#16223A;--text:#E8EDF5;--muted:#9AA8BF;--line:#243049;--accent:#F59E0B;--accent-bg:#2A2110;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);
}
:lang(ar){--serif:'Cairo',sans-serif;--sans:'Cairo',sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hh) + 12px)}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 var(--sans);-webkit-font-smoothing:antialiased;padding-bottom:72px}
img{max-width:100%;display:block}
a{color:var(--accent)}
h1,h2,h3{font-family:var(--serif);line-height:1.2;margin:0}
.skip{position:absolute;inset-inline-start:-999px}.skip:focus{inset-inline-start:8px;top:8px;background:var(--surface);padding:8px 12px;z-index:100}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px}

/* Header */
.top{position:sticky;top:0;z-index:50;height:var(--hh);display:flex;align-items:center;gap:12px;padding:0 16px;background:rgba(255,255,255,.8);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid rgba(203,213,225,.6);transition:box-shadow .25s}
:root[data-theme=dark] .top{background:rgba(15,23,42,.8);border-bottom-color:rgba(30,41,59,.6)}
.top.scrolled{box-shadow:0 1px 3px rgba(15,23,42,.08)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:600;margin-inline-end:auto;transition:opacity .2s}
.brand:hover{opacity:.8}
.logo{width:44px;height:44px;object-fit:contain;filter:drop-shadow(0 1px 2px rgba(15,23,42,.25))}
.brand-t{display:none}
.nav{display:none}
.tools{display:flex;gap:8px;align-items:center}
.seg{display:flex;background:#F1F5F9;border-radius:999px;padding:4px}
:root[data-theme=dark] .seg{background:#1E293B}
.seg button{border:0;background:none;padding:0 10px;border-radius:999px;font-size:13px;font-weight:600;min-height:44px;min-width:44px;color:var(--muted);transition:color .2s}
.seg button[aria-pressed=true]{background:#fff;color:#0F172A;box-shadow:0 1px 2px rgba(15,23,42,.15)}
:root[data-theme=dark] .seg button[aria-pressed=true]{background:#334155;color:#fff}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;font-size:18px}
#themeBtn{transition:transform .3s}#themeBtn:hover{transform:rotate(12deg)}

/* Bottom nav (mobile) */
.bottom{position:fixed;inset:auto 0 0 0;z-index:50;display:flex;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);overflow-x:auto;scrollbar-width:none}
.bottom::-webkit-scrollbar{display:none}
.bottom a,.bottom button{flex:1 1 0;min-width:0;min-height:56px;display:grid;place-items:center;gap:0;padding:6px 4px;text-decoration:none;color:var(--muted);font-size:11px;text-align:center;background:none;border:0}
.bottom a b,.bottom button b{font-size:20px;font-weight:400;line-height:1}
.bottom a.on{color:var(--accent);font-weight:600}

/* Hero */
.hero{padding:32px 16px 48px;max-width:1180px;margin:auto}
.hero-in{display:grid;gap:28px}
.hero-pic{order:-1;justify-self:center}
.hero-pic img{width:min(260px,70vw);aspect-ratio:1;object-fit:cover;border-radius:28px;border:4px solid var(--surface);box-shadow:var(--shadow);outline:2px solid var(--amber);outline-offset:6px}
.eyebrow{color:#9A3412;font-weight:600;font-size:14px;letter-spacing:.02em;margin:0 0 8px}
:root[data-theme=dark] .eyebrow{color:#FBBF24}
h1{font-size:clamp(34px,8vw,64px)}
.lead{font:600 clamp(17px,3.4vw,22px)/1.4 var(--serif);margin:12px 0}
.about{color:var(--muted);max-width:60ch}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 20px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--text);text-decoration:none;font-weight:600;font-size:15px}
.btn.primary{background:var(--navy);color:#fff;border-color:var(--navy)}
:root[data-theme=dark] .btn.primary{background:var(--amber);border-color:var(--amber);color:#111}
.ico-s{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn.sm{min-height:44px;padding:0 14px;font-size:14px}
.links{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.links a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border-radius:999px;background:var(--surface2);text-decoration:none;color:var(--text);font-size:14px;font-weight:500}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:32px}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;box-shadow:0 1px 2px rgba(15,23,42,.06);transition:box-shadow .2s}
.kpi:hover{box-shadow:0 6px 18px rgba(15,23,42,.12)}
.kpi b{display:block;font:700 28px var(--serif);color:var(--accent)}
.kpi span{color:var(--muted);font-size:13px;line-height:1.3;display:block}

/* Sections */
.sec{max-width:1180px;margin:auto;padding:48px 16px 8px}
.sec>h2{font-size:clamp(26px,5vw,38px)}
.sub{color:var(--muted);margin:6px 0 20px}
.h3{font-size:22px;margin:36px 0 14px}
.bento{display:grid;gap:12px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--shadow)}
.card h3{font-size:19px;margin-bottom:8px}
.card p{margin:0;color:var(--muted);font-size:15px}
.card .ico{font-size:28px;display:block;margin-bottom:8px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.chip{padding:6px 12px;border-radius:999px;background:var(--accent-bg);color:var(--accent);font-size:13px;font-weight:600}

/* Timeline */
.tl{position:relative;margin-top:28px;padding-inline-start:28px}
.tl::before{content:"";position:absolute;inset-block:0;inset-inline-start:7px;width:2px;background:linear-gradient(var(--amber),var(--emerald))}
.ev{position:relative;margin-bottom:14px;opacity:0;transform:translateY(14px);transition:.5s}
.ev.in{opacity:1;transform:none}
.ev::before{content:"";position:absolute;inset-inline-start:-27px;top:20px;width:14px;height:14px;border-radius:50%;background:var(--bg);border:3px solid var(--amber)}
.ev.diploma::before{border-color:var(--emerald)}.ev.mission::before{border-color:#3B82F6}
.ev button{display:block;width:100%;text-align:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;min-height:48px}
.ev button:hover{border-color:var(--amber)}
.ev small{color:var(--accent);font-weight:700}
.ev strong{display:block;font-family:var(--serif);font-size:17px}

/* Map */
.mapbox{height:min(62vh,520px);border-radius:var(--r);overflow:hidden;border:1px solid var(--line);z-index:0}
.pin{width:18px;height:18px;border-radius:50%;border:3px solid #fff;box-shadow:0 0 0 0 rgba(217,119,6,.6);animation:pulse 2s infinite}
.pin.teach{background:var(--amber)}.pin.mission{background:var(--emerald);animation-name:pulse2}
@keyframes pulse{70%{box-shadow:0 0 0 14px rgba(217,119,6,0)}100%{box-shadow:0 0 0 0 rgba(217,119,6,0)}}
@keyframes pulse2{70%{box-shadow:0 0 0 14px rgba(5,150,105,0)}100%{box-shadow:0 0 0 0 rgba(5,150,105,0)}}

/* Metrics / charts */
.metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:12px}
.metrics .kpi b{font-size:32px}
.charts{display:grid;gap:12px}
.cv{position:relative;height:260px}

/* Lists */
.filters{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;margin-bottom:14px;scrollbar-width:thin}
.filters button{flex:none;min-height:44px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-size:14px;font-weight:500}
.filters button[aria-pressed=true]{background:var(--navy);color:#fff;border-color:var(--navy)}
:root[data-theme=dark] .filters button[aria-pressed=true]{background:var(--amber);border-color:var(--amber);color:#111}
.list{display:grid;gap:10px}
.pub{display:grid;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;border-inline-start:4px solid var(--c,var(--amber))}
.pub h3{font:600 16px/1.4 var(--sans)}
.pub .m{color:var(--muted);font-size:14px}
.pub .row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.yr{font-weight:700;color:var(--accent)}
.grid-docs{display:grid;gap:10px}
.doc{display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.doc small{color:var(--muted)}
.doc strong{font-size:15px;line-height:1.35}
.doc .row{display:flex;gap:8px;margin-top:auto}
.doc .row .btn{flex:1}

/* Gallery / video */
.gallery{columns:2;column-gap:10px}
.gallery button{display:block;width:100%;margin:0 0 10px;padding:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--surface);break-inside:avoid;position:relative}
.gallery img{width:100%;height:auto;transition:transform .4s}
.gallery button:hover img{transform:scale(1.04)}
.gallery span{position:absolute;inset:auto 0 0 0;padding:20px 8px 8px;background:linear-gradient(transparent,rgba(0,0,0,.75));color:#fff;font-size:12px;text-align:start}
.empty{padding:28px;border:2px dashed var(--line);border-radius:var(--r);color:var(--muted);text-align:center}
.videos{display:grid;gap:12px}
.videos video{width:100%;border-radius:12px;background:#000}

/* Graph */
.search{width:100%;min-height:48px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--text);padding:0 16px;font:inherit}
.legend{display:flex;flex-wrap:wrap;gap:12px;margin:12px 0;font-size:13px;color:var(--muted)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:50%;margin-inline-end:6px}
.graphbox{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);overflow:hidden;touch-action:pan-y}
#graph{width:100%;height:min(70vh,560px);display:block}
#graph text{font:11px var(--sans);fill:var(--text);pointer-events:none;paint-order:stroke;stroke:var(--surface);stroke-width:3px}
#graph line{stroke:var(--line);stroke-width:1.2}
#graph circle{cursor:pointer;stroke:var(--surface);stroke-width:2}
#graph .dim{opacity:.12}

.foot{text-align:center;color:var(--muted);padding:48px 16px 24px;font-size:14px}

/* Sheet: drawer on desktop, bottom sheet on mobile */
.scrim{position:fixed;inset:0;background:rgba(2,6,23,.55);z-index:80}
.sheet{position:fixed;z-index:90;background:var(--surface);color:var(--text);inset-inline:0;bottom:0;max-height:88vh;border-radius:22px 22px 0 0;display:flex;flex-direction:column;transform:translateY(100%);transition:transform .3s;padding:0 16px 16px;box-shadow:0 -10px 40px rgba(0,0,0,.3)}
.sheet.open{transform:none}
.sheet[hidden],.scrim[hidden],.lightbox[hidden],.chat[hidden]{display:none}
.grab{height:24px;display:grid;place-items:center;touch-action:none;cursor:grab}
.grab::before{content:"";width:44px;height:5px;border-radius:3px;background:var(--line)}
.sheet .x{position:absolute;top:8px;inset-inline-end:12px;z-index:2}
#sheetBody{overflow:auto;padding-top:8px}
#sheetBody h2{font-size:24px;margin:4px 40px 8px 0}
#sheetBody .frame{width:100%;height:68vh;border:1px solid var(--line);border-radius:12px;margin-top:12px;background:var(--surface2)}
#sheetBody img.big{width:100%;border-radius:12px;margin-top:12px}

/* Lightbox */
.lightbox{position:fixed;inset:0;background:rgba(2,6,23,.94);z-index:120;display:grid;place-items:center;padding:56px 12px}
.lightbox figure{margin:0;max-width:100%;text-align:center;color:#fff}
.lightbox img{max-height:76vh;margin:auto;border-radius:8px}
.lightbox .icon-btn{position:absolute;background:rgba(255,255,255,.12);color:#fff;border-color:transparent;width:48px;height:48px}
.lightbox .x{top:10px;inset-inline-end:10px}.lightbox .prev{inset-inline-start:8px;top:50%}.lightbox .next{inset-inline-end:8px;top:50%}
[dir=rtl] .lightbox .prev,[dir=rtl] .lightbox .next{scale:-1 1}

/* Chat */
.fab{position:fixed;inset-inline-end:16px;bottom:88px;width:56px;height:56px;border-radius:50%;border:0;background:var(--amber);font-size:24px;box-shadow:var(--shadow);z-index:60}
.chat{position:fixed;z-index:100;inset:0;height:100vh;height:100dvh;display:flex;flex-direction:column;background:var(--surface);border:0;border-radius:0;overflow:hidden}
.chat header{padding-top:max(8px,env(safe-area-inset-top))}
.chat form{padding-bottom:max(10px,env(safe-area-inset-bottom))}
.chat header{display:flex;justify-content:space-between;align-items:center;padding:8px 8px 8px 16px;background:var(--navy);color:#fff}
.chat header .icon-btn{background:none;color:#fff;border-color:transparent}
.msgs{flex:1;overflow:auto;padding:14px;display:flex;flex-direction:column;gap:8px;min-height:220px}
.msg{white-space:pre-wrap;max-width:86%;padding:10px 14px;border-radius:14px;font-size:15px;line-height:1.5}
.msg.bot{background:var(--surface2);align-self:flex-start}
.msg.me{background:var(--navy);color:#fff;align-self:flex-end}
:root[data-theme=dark] .msg.me{background:var(--amber);color:#111}
.chat form{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line)}
.chat input{flex:1;min-width:0;min-height:48px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--text);padding:0 14px;font:inherit}

/* Tablet / desktop */
@media(min-width:760px){
  body{padding-bottom:0}.bottom{display:none}
  .kpis{grid-template-columns:repeat(4,1fr)}
  .bento{grid-template-columns:repeat(3,1fr)}
  .metrics{grid-template-columns:repeat(4,1fr)}
  .charts{grid-template-columns:3fr 2fr}
  .grid-docs{grid-template-columns:repeat(2,1fr)}
  .gallery{columns:3}.videos{grid-template-columns:repeat(3,1fr)}
  .hero-in{grid-template-columns:1.3fr 1fr;align-items:center}
  .hero-pic{order:0}.hero-pic img{width:min(420px,100%)}
  .fab{bottom:24px}.chat{inset-block:auto 92px;inset-inline:auto 24px;width:380px;height:auto;max-height:70vh;border:1px solid var(--line);border-radius:18px;box-shadow:0 20px 50px rgba(0,0,0,.3)}.chat header{padding-top:8px}
  .sheet{inset-block:0;inset-inline:auto 0;width:min(560px,100%);max-height:none;border-radius:0;transform:translateX(100%);padding-top:16px}
  [dir=rtl] .sheet{transform:translateX(-100%)}
  .sheet.open{transform:none}.grab{display:none}
  .tl{padding-inline-start:0;display:grid;grid-template-columns:1fr 1fr;column-gap:48px}
  .tl::before{inset-inline-start:50%}
  .ev:nth-child(even){margin-top:36px}
  .ev:nth-child(odd){text-align:end}.ev:nth-child(odd) button{text-align:end}
  .ev::before{inset-inline-start:auto}
  .ev:nth-child(odd)::before{inset-inline-end:-56px}.ev:nth-child(even)::before{inset-inline-start:-56px}
}
@media(min-width:1000px){
  .nav{display:flex;gap:4px;padding:4px;border-radius:999px;background:rgba(241,245,249,.7);border:1px solid rgba(203,213,225,.5)}
  :root[data-theme=dark] .nav{background:rgba(30,41,59,.6);border-color:rgba(51,65,85,.5)}
  .nav a{padding:6px 10px;border-radius:999px;text-decoration:none;color:#475569;font-size:13px;font-weight:500;white-space:nowrap;transition:color .2s,background .2s}
  :root[data-theme=dark] .nav a{color:#CBD5E1}
  .nav a:hover{color:#0F172A}:root[data-theme=dark] .nav a:hover{color:#fff}
  .nav a.on{background:rgba(245,158,11,.12);color:#B45309;font-weight:600}
  :root[data-theme=dark] .nav a.on{color:#FBBF24}
  .brand{margin-inline-end:auto}
  .grid-docs{grid-template-columns:repeat(3,1fr)}
}
@media(min-width:1240px){.brand-t{display:inline}.nav a{padding:6px 14px;font-size:14px}.nav{gap:6px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}.ev{opacity:1;transform:none}}

/* Intro animée du logo (une fois par session) */
html.splashing{overflow:hidden}
.splash{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;background:radial-gradient(circle at 50% 45%,#16223F 0%,#0F172A 55%,#070B16 100%);cursor:pointer;transition:opacity .7s ease,transform .8s cubic-bezier(.7,0,.3,1)}
.splash.out{opacity:0;transform:scale(1.35);pointer-events:none}
.splash-in{display:grid;justify-items:center;gap:20px}
.splash-logo{position:relative;width:min(220px,52vw);animation:sp-in .8s cubic-bezier(.2,.8,.2,1) both}
.splash-logo img{width:100%;height:auto;filter:drop-shadow(0 0 28px rgba(217,119,6,.45))}
.splash-logo::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,transparent 35%,rgba(255,255,255,.9) 50%,transparent 65%) -150% 0/250% 100% no-repeat;-webkit-mask:url(../assets/img/logo.png) center/contain no-repeat;mask:url(../assets/img/logo.png) center/contain no-repeat;animation:sp-shine .7s .5s ease-out both}
.splash-name{margin:0;font:700 clamp(22px,5vw,32px) 'Cairo',sans-serif;color:#FBBF24;letter-spacing:.04em;animation:sp-txt .6s .6s ease-out both}
@keyframes sp-in{from{opacity:0;transform:scale(.55);filter:blur(14px)}60%{opacity:1}to{opacity:1;transform:scale(1);filter:blur(0)}}
@keyframes sp-shine{to{background-position:250% 0}}
@keyframes sp-txt{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

.fill{grid-column:1/-1;margin:0;padding:12px 16px;border:1px dashed var(--line);border-radius:12px;color:var(--muted);font-size:14px}
.stack{display:grid;gap:10px}
.pdfnote{color:var(--muted);margin:8px 0 0}