:root{
  --navy:#071b33;--navy2:#0b2949;--gold:#f4c542;--green:#0f9d58;
  --red:#d93131;--bg:#f4f7fb;--card:#fff;--text:#172233;--muted:#667085;
  --line:#e5eaf0;--shadow:0 18px 50px rgba(10,31,68,.12)
}
*{box-sizing:border-box}
body{margin:0;font-family:Cambria,Georgia,serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:inherit}
.container{width:min(1180px,92%);margin:auto}
.topbar{background:var(--navy);color:#fff}
.topbar .inner{display:flex;justify-content:space-between;align-items:center;padding:10px 0;gap:12px;flex-wrap:wrap}
.social a{display:inline-block;margin-left:8px;padding:7px 10px;border:1px solid #ffffff30;border-radius:9px}
.hero{background:linear-gradient(135deg,#071b33,#123d6b);color:#fff;padding:55px 0 48px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;width:340px;height:340px;border-radius:50%;background:#ffffff0b;right:-80px;top:-100px}
.badge{display:inline-block;background:#ffffff14;border:1px solid #ffffff2f;padding:7px 13px;border-radius:99px;font-weight:700}
.hero h1{font-size:clamp(31px,5vw,58px);margin:16px 0 10px;line-height:1.05}
.hero p{font-size:18px;max-width:860px;line-height:1.65;color:#edf4ff}
.slogan{background:var(--gold);color:#18213a;font-weight:800;padding:12px 16px;border-radius:12px;display:inline-block;margin:7px 7px 0 0}
.section{padding:48px 0}
.section h2{font-size:31px;color:var(--navy);margin:0 0 20px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow)}
.topic-card h3{margin-top:0;color:var(--navy2)}
.topic-body{white-space:pre-line;line-height:1.8}
.media img,.media video{width:100%;height:240px;object-fit:cover;border-radius:13px;background:#000}
.media h3{margin:12px 0 4px}
.members .card{text-align:center}
.avatar{width:110px;height:110px;border-radius:50%;object-fit:cover;background:#eef2f7;margin-bottom:12px}
.contact-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.footer{background:#061426;color:#dbe7f5;padding:30px 0;margin-top:30px}
.admin-shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.sidebar{background:#061426;color:white;padding:24px 16px}
.sidebar h2{margin:0 0 24px}
.sidebar a{display:block;padding:12px 14px;border-radius:10px;margin:5px 0;color:#d9e7f5}
.sidebar a:hover{background:#ffffff13}
.content{padding:30px}
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px}
.btn{display:inline-block;border:0;border-radius:10px;padding:11px 16px;background:var(--navy2);color:#fff;font-weight:700;cursor:pointer}
.btn.green{background:var(--green)} .btn.red{background:var(--red)} .btn.gold{background:#b98500}
input,textarea,select{width:100%;padding:11px 12px;border:1px solid #ccd5df;border-radius:10px;font:inherit;background:#fff}
textarea{min-height:130px;resize:vertical}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{display:block;font-weight:700;margin-bottom:6px;color:#25344a}
.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:16px}
table{width:100%;border-collapse:collapse}
th,td{padding:12px 13px;border-bottom:1px solid #edf1f5;text-align:left;vertical-align:top}
th{background:#f7f9fc;color:#344054}
.flash{padding:12px 14px;border-radius:10px;margin-bottom:18px;background:#e9f8ef;color:#15743c}
.login-page{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#071b33,#164e7e)}
.login-box{width:min(420px,92%);background:#fff;border-radius:20px;padding:28px;box-shadow:var(--shadow)}
.login-box h1{text-align:center;color:var(--navy)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{padding:18px;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.stat b{font-size:28px;color:var(--navy2)}
@media(max-width:850px){
 .grid,.stat-grid{grid-template-columns:1fr 1fr}
 .admin-shell{grid-template-columns:1fr}.sidebar{position:static}
 .form-grid,.contact-row{grid-template-columns:1fr}
}
@media(max-width:560px){.grid,.stat-grid{grid-template-columns:1fr}.content{padding:18px}.hero{padding:38px 0}.media img,.media video{height:210px}}