/* ISTM Kinshasa — Section Imagerie Médicale — Static site */
:root{
  --primary:#0a4d8c;
  --primary-glow:#1976d2;
  --gold:#d4a017;
  --bg:#f7fafc;
  --card:#ffffff;
  --text:#0f1f33;
  --muted:#5b6a80;
  --border:#e3e8f0;
  --shadow-card:0 4px 12px rgba(10,77,140,.06);
  --shadow-elegant:0 18px 40px -10px rgba(10,77,140,.25);
  --gradient-primary:linear-gradient(135deg,#0a4d8c,#1976d2);
  --gradient-hero:linear-gradient(120deg,rgba(10,77,140,.85),rgba(25,118,210,.55));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Inter',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.55}
h1,h2,h3,h4{font-family:'Plus Jakarta Sans','Inter',sans-serif;font-weight:700;line-height:1.15;margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{max-width:1200px;margin:0 auto;padding:0 1.25rem}
.section{padding:5rem 0}
.section-alt{background:linear-gradient(to bottom,var(--bg),#eef4fb)}
.eyebrow{display:inline-block;padding:.25rem .75rem;border-radius:999px;background:rgba(17, 103, 184, 0.1);color:var(--primary);font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.section-title{font-size:clamp(1.7rem,3vw,2.75rem);margin-top:.75rem}
.section-lead{color:var(--muted);margin-top:.75rem;max-width:46rem;margin-left:auto;margin-right:auto}
.text-center{text-align:center}

/* HEADER */
.site-header{position:fixed;inset:0 0 auto 0;z-index:50;background:rgba(54, 37, 37, 0.7);backdrop-filter:blur(10px);transition:.3s;border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(11, 49, 71, 0.92);box-shadow:var(--shadow-card);border-bottom-color:var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:.7rem}
.brand img{height:44px;width:44px;object-fit:contain}
.brand-title{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;color:var(--bg);font-size:.95rem;line-height:1.1}
.brand-sub{font-size:.72rem;color:var(--bg)}
.nav-links{display:none;gap:.25rem;align-items:center}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-links a{padding:.5rem .85rem;font-size:.88rem;font-weight:500;border-radius:.4rem;color:#ebedf0}
.nav-links a:hover{color:var(--primary);background:#eef4fb}
.btn-admin{background:var(--primary);color:#fff!important;padding:.55rem 1rem!important;font-weight:600!important}
.btn-admin:hover{background:var(--primary-glow)!important}
.menu-btn{background:none;border:none;cursor:pointer;padding:.4rem;color:var(--bg)}
@media(min-width:1024px){.menu-btn{display:none}}
.mobile-menu{display:none;background:#fff;border-top:1px solid var(--border)}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:.85rem 1.25rem;border-bottom:1px solid #f0f3f8;font-weight:500}

/* HERO */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding-top:5rem;overflow:hidden;color:#fff}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-overlay{position:absolute;inset:0;background:var(--gradient-hero);z-index:1}
.hero-content{position:relative;z-index:2;padding:5rem 0}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.4rem 1rem;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:999px;font-size:.85rem;backdrop-filter:blur(10px);margin-bottom:1.5rem}
.hero-badge img{height:20px}
.hero h1{font-size:clamp(2.2rem,5vw,4.5rem);max-width:900px}
.hero h1 .gold{color:var(--gold)}
.hero p.lead{margin-top:1.25rem;font-size:clamp(1rem,1.4vw,1.25rem);opacity:.9;max-width:640px}
.hero-cta{margin-top:2.25rem;display:flex;flex-wrap:wrap;gap:1rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 1.6rem;border-radius:.6rem;font-weight:600;font-size:.95rem;cursor:pointer;border:none;transition:.2s}
.btn-primary{background:var(--gold);color:#1a2a3a;box-shadow:var(--shadow-elegant)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.3);backdrop-filter:blur(10px)}
.btn-ghost:hover{background:rgba(255,255,255,.2)}
.hero-stats{margin-top:4rem;display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;max-width:720px}
@media(min-width:768px){.hero-stats{grid-template-columns:repeat(4,1fr)}}
.stat{padding:1rem;border-radius:.85rem;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(10px)}
.stat-k{font-size:1.75rem;font-weight:800;color:var(--gold)}
.stat-v{font-size:.8rem;opacity:.85;margin-top:.25rem}

/* CARDS GRID */
.grid{display:grid;gap:1.25rem}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
@media(min-width:640px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--text);border:1px solid var(--border);border-radius:1rem;padding:1.5rem;box-shadow:var(--shadow-card);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-elegant)}
.card-icon{width:48px;height:48px;border-radius:.75rem;background:var(--gradient-primary);color:#fff;display:grid;place-items:center;margin-bottom:1rem;font-size:1.4rem}
.card h3{font-size:1.1rem;margin-bottom:.4rem; color: #cfd8e3;}
.card p{margin:0;color:var(--bg);font-size:.92rem}

/* HISTORIQUE */
.timeline{margin-top:3rem;display:flex;flex-direction:column;gap:1.5rem;position:relative}
.timeline-item{background:#fff;border:1px solid var(--border);border-radius:1rem;padding:1.5rem;box-shadow:var(--shadow-card);border-left:5px solid var(--primary)}
.timeline-year{font-size:1.8rem;font-weight:800;color:var(--primary)}
.timeline-title{font-weight:700;margin-top:.25rem}
.timeline-body{color:var(--muted);font-size:.92rem;margin-top:.25rem}

/* CURSUS */
.cursus{margin-top:3rem;display:grid;gap:1.25rem;grid-template-columns:1fr}
@media(min-width:768px){.cursus{grid-template-columns:repeat(3,1fr)}}
.cursus-card{position:relative;padding:2rem;border-radius:1rem;background:linear-gradient(135deg,#eef4fb,#fff);border:1px solid var(--border);overflow:hidden}
.cursus-letter{position:absolute;top:-1rem;right:-.5rem;font-size:7rem;font-weight:900;opacity:.1;color:var(--primary)}
.cursus-tag{width:56px;height:56px;border-radius:.85rem;background:var(--primary);color:#fff;font-weight:800;font-size:1.6rem;display:grid;place-items:center}
.cursus h4{margin-top:1rem;font-size:1.2rem}
.cursus p{color:var(--muted);font-size:.92rem;margin-top:.5rem}
.limtim{margin-top:2.5rem;background:var(--gradient-primary);color:#fff;padding:2rem;border-radius:1rem}
.limtim h4{font-size:clamp(1.2rem,2.2vw,1.7rem);margin-top:.4rem}
.limtim-grid{display:grid;gap:1.5rem;margin-top:1.5rem;grid-template-columns:1fr}
@media(min-width:768px){.limtim-grid{grid-template-columns:1fr 1fr}}
.limtim ul{margin:.5rem 0 0;padding:0;list-style:none}
.limtim li{display:flex;gap:.5rem;font-size:.9rem;margin:.4rem 0;opacity:.95}
.limtim li::before{content:"✓";color:var(--gold);font-weight:700}

/* GALLERY */
.filters{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem;margin:2rem 0}
.filter{padding:.5rem 1rem;border-radius:999px;border:1px solid var(--border);background:#fff;font-size:.85rem;font-weight:500;cursor:pointer;transition:.2s}
.filter.active,.filter:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
@media(min-width:768px){.gallery{grid-template-columns:repeat(3,1fr)}}
.gallery-item{position:relative;overflow:hidden;border-radius:.85rem;aspect-ratio:4/3;cursor:pointer;box-shadow:var(--shadow-card)}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:.6s}
.gallery-item:hover img{transform:scale(1.08)}
.gallery-item .cap{position:absolute;inset:auto 0 0 0;padding:.85rem;background:linear-gradient(transparent,rgba(10,77,140,.9));color:#fff;font-size:.85rem;font-weight:500;opacity:0;transition:.3s}
.gallery-item:hover .cap{opacity:1}

/* LIGHTBOX */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:100;display:none;align-items:center;justify-content:center;padding:1.5rem}
.lightbox.open{display:flex}
.lightbox img{max-height:85vh;max-width:90vw;border-radius:.5rem}
.lightbox-close{position:absolute;top:1.5rem;right:1.5rem;width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.1);color:#fff;border:none;cursor:pointer;font-size:1.5rem}

/* NEWS */
.search-wrap{max-width:420px;margin:2rem auto;position:relative}
.search-wrap input{width:100%;padding:.85rem 1.25rem .85rem 2.75rem;border-radius:999px;border:1px solid var(--border);background:#fff;font-size:.95rem}
.search-wrap input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(10,77,140,.1)}
.search-wrap::before{content:"🔍";position:absolute;left:1rem;top:50%;transform:translateY(-50%);opacity:.5}
.news-card{background:#fff;border:1px solid var(--border);border-radius:1rem;overflow:hidden;box-shadow:var(--shadow-card);transition:.25s}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-elegant)}
.news-bar{height:6px;background:var(--gradient-primary)}
.news-body{padding:1.5rem}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;font-size:.75rem}
.news-cat{padding:.2rem .65rem;border-radius:999px;background:rgba(10,77,140,.1);color:var(--primary);font-weight:600}
.news-date{color:var(--muted)}
.news-body h3{margin-top:.75rem;font-size:1.1rem}
.news-body p{color:var(--muted);font-size:.9rem;margin-top:.5rem}
.read-more{color:var(--primary);font-weight:600;font-size:.88rem;margin-top:1rem;display:inline-flex;gap:.25rem;background:none;border:none;cursor:pointer;padding:0}

/* MODAL */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:100;display:none;align-items:center;justify-content:center;padding:1rem}
.modal.open{display:flex}
.modal-inner{background:#fff;border-radius:1rem;max-width:640px;width:100%;max-height:85vh;overflow-y:auto;padding:2rem;position:relative}
.modal-close{position:absolute;top:1rem;right:1rem;width:36px;height:36px;border-radius:50%;background:#f0f3f8;border:none;cursor:pointer;font-size:1.2rem}

/* CONTACT */
.contact-grid{display:grid;gap:2rem;grid-template-columns:1fr}
@media(min-width:1024px){.contact-grid{grid-template-columns:2fr 3fr}}
.contact-info{display:flex;flex-direction:column;gap:1rem}
.contact-row{display:flex;gap:1rem;padding:1.25rem;background:#fff;border:1px solid var(--border);border-radius:.85rem;box-shadow:var(--shadow-card)}
.contact-row-icon{width:42px;height:42px;border-radius:.5rem;background:rgba(10,77,140,.1);color:var(--primary);display:grid;place-items:center;font-size:1.2rem;flex-shrink:0}
.contact-row strong{display:block;font-size:.95rem}
.contact-row a,.contact-row span{font-size:.88rem;color:var(--muted)}
.contact-row a:hover{color:var(--primary)}
.map{border-radius:.85rem;overflow:hidden;border:1px solid var(--border);aspect-ratio:16/9}
.map iframe{width:100%;height:100%;border:none}
.contact-form{background:#0a1a2e;border:1px solid var(--border);border-radius:1rem;padding:2rem;box-shadow:var(--shadow-elegant);display:flex;flex-direction:column;gap:1rem}
.form-row{display:grid;grid-template-columns:1fr;gap:1rem}
@media(min-width:640px){.form-row{grid-template-columns:1fr 1fr}}
.field label{display:block;font-size:.85rem;font-weight:500;margin-bottom:.35rem; color: #cfd8e3;}
.field input,.field textarea{width:100%;padding:.7rem 1rem;border:1px solid var(--border);border-radius:.5rem;background:#fff;font-family:inherit;font-size:.95rem}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(10,77,140,.12)}
.field textarea{resize:vertical;min-height:130px}

/* FOOTER */
.footer{background:#0a1a2e;color:#cfd8e3;padding:3.5rem 0 1.5rem}
.footer-grid{display:grid;gap:2rem;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}
.footer h4{color:#fff;font-size:1rem;margin-bottom:1rem}
.footer a{color:#cfd8e3;font-size:.88rem;display:block;padding:.25rem 0}
.footer a:hover{color:var(--gold)}
.footer-brand{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem}
.footer-brand img{height:42px}
.footer-brand strong{color:#fff;font-size:1.05rem}
.footer-brand span{font-size:.78rem;opacity:.7;display:block}
.socials{display:flex;gap:.5rem;margin-top:1rem}
.socials a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.08);display:grid;place-items:center;font-size:1.1rem}
.socials a:hover{background:var(--gold);color:#0a1a2e}
.copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:2.5rem;padding-top:1.5rem;font-size:.8rem;text-align:center;opacity:.7}

/* SCROLL-TOP */
.scroll-top{position:fixed;bottom:1.5rem;right:1.5rem;width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;font-size:1.4rem;box-shadow:var(--shadow-elegant);opacity:0;pointer-events:none;transition:.3s;z-index:40}
.scroll-top.visible{opacity:1;pointer-events:auto}

/* REVEAL ANIMATIONS */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s,transform .7s}
.reveal.visible{opacity:1;transform:none}

/* ADMIN */
.admin-wrap{min-height:100vh;display:grid;place-items:center;padding:2rem;background:linear-gradient(135deg,#eef4fb,#fff)}
.admin-card{background:#279fc0;border:1px solid var(--border);border-radius:1rem;padding:2.5rem;max-width:520px;width:100%;box-shadow:var(--shadow-elegant)}
.admin-card h1{font-size:1.5rem;margin-bottom:.5rem;color:var(--primary)}
.admin-news{max-width:920px;margin:2rem auto;padding:0 1.25rem}
.news-form-grid{display:grid;gap:1rem;grid-template-columns:1fr}
@media(min-width:640px){.news-form-grid{grid-template-columns:1fr 1fr}}
.news-list{margin-top:2rem;display:grid;gap:1rem}
.news-item{background:#fff;border:1px solid var(--border);border-radius:.75rem;padding:1.25rem;display:flex;justify-content:space-between;align-items:flex-start;gap:1rem}
.news-item button{background:#fee;color:#c33;border:none;padding:.45rem .85rem;border-radius:.4rem;cursor:pointer;font-weight:600;font-size:.85rem}

/* ADMIN TABS & CRUD */
.admin-tabs{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:2rem;border-bottom:2px solid var(--border);padding-bottom:.5rem}
.admin-tabs button{background:transparent;border:none;padding:.6rem 1rem;font-weight:600;color:var(--muted);cursor:pointer;border-radius:.4rem;font-size:.92rem}
.admin-tabs button.active{background:var(--primary);color:#fff}
.admin-tabs button:hover:not(.active){background:#eef4fb;color:var(--primary)}
.admin-panel{display:none}
.admin-panel.active{display:block}
.admin-panel h2{color:var(--primary);font-size:1.4rem;margin-bottom:.5rem}
.admin-panel .hint{color:var(--text);font-size:.88rem;margin-bottom:1.5rem}
.crud-form{background:#0c253b;border:1px solid var(--border);border-radius:.85rem;padding:1.5rem;margin-bottom:1.5rem}
.crud-form h3{font-size:1.05rem;margin-bottom:1rem;color:var(--primary)}
.crud-form .row{display:grid;gap:.9rem;grid-template-columns:1fr}
@media(min-width:640px){.crud-form .row.cols-2{grid-template-columns:1fr 1fr}.crud-form .row.cols-3{grid-template-columns:1fr 1fr 1fr}}
.crud-form label{display:block;font-size:.82rem;font-weight:600;color:var(--bg);margin-bottom:.3rem}
.crud-form input,.crud-form textarea,.crud-form select{width:100%;padding:.65rem .85rem;border:1px solid var(--border);border-radius:.5rem;font:inherit;background:#fff}
.crud-form textarea{min-height:90px;resize:vertical}
.crud-form .actions{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:1rem}
.crud-form .actions button{padding:.55rem 1.1rem;border:none;border-radius:.45rem;font-weight:600;cursor:pointer;font-size:.9rem}
.btn-save{background:var(--primary);color:#fff}
.btn-cancel{background:#f1f5f9;color:var(--text)}
.crud-list{display:grid;gap:.85rem}
.crud-item{background:#fff;border:1px solid var(--border);border-radius:.75rem;padding:1rem 1.25rem;display:flex;gap:1rem;align-items:flex-start;justify-content:space-between}
.crud-item .info{flex:1;min-width:0}
.crud-item .info strong{display:block;color:var(--text)}
.crud-item .info small{display:block;color:var(--muted);font-size:.78rem;margin-top:.2rem}
.crud-item .info p{font-size:.85rem;color:var(--muted);margin-top:.4rem}
.crud-item img{width:60px;height:60px;object-fit:cover;border-radius:.4rem;flex-shrink:0}
.crud-item .ops{display:flex;gap:.4rem;flex-shrink:0}
.crud-item .ops button{padding:.4rem .75rem;border:none;border-radius:.35rem;cursor:pointer;font-weight:600;font-size:.78rem}
.btn-edit{background:#fef3c7;color:#92400e}
.btn-del{background:#fee2e2;color:#b91c1c}
.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--primary);color:#fff;padding:.8rem 1.25rem;border-radius:.5rem;box-shadow:var(--shadow-elegant);z-index:100;opacity:0;transform:translateY(10px);transition:.3s;pointer-events:none;font-size:.9rem}
.toast.show{opacity:1;transform:none}
.toast.error{background:#dc2626}