:root{
  --primary:#5b3df5;
  --primary-dark:#4326d1;
  --accent:#00d4b5;
  --bg:#0f0f1a;
  --light-bg:#f6f7fb;
  --text:#1c1c2b;
  --muted:#6b6b80;
  --white:#ffffff;
  --radius:14px;
  --shadow:0 10px 30px rgba(30,20,90,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Poppins',Segoe UI,Arial,sans-serif;background:var(--light-bg);color:var(--text);line-height:1.6}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}
.container{width:92%;max-width:1180px;margin:0 auto}

/* ---------- Navbar ---------- */
.navbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.85);backdrop-filter:blur(10px);box-shadow:0 2px 12px rgba(0,0,0,.05)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{font-weight:700;font-size:1.3rem;background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-weight:500;color:var(--text);transition:.25s}
.nav-links a:hover{color:var(--primary)}
.btn{display:inline-block;padding:10px 22px;border-radius:30px;font-weight:600;transition:.25s;border:none;cursor:pointer}
.btn-primary{background:linear-gradient(90deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 8px 20px rgba(91,61,245,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(91,61,245,.45)}
.btn-outline{border:2px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-sm{padding:6px 16px;font-size:.85rem;border-radius:20px}

/* ---------- Hero ---------- */
.hero{background:radial-gradient(circle at 20% 20%,#241f57,#0f0f1a 70%);color:#fff;padding:90px 0 70px;overflow:hidden;position:relative}
.hero .container{display:flex;align-items:center;gap:40px;flex-wrap:wrap}
.hero-text{flex:1;min-width:280px;animation:fadeUp .8s ease both}
.hero-text h1{font-size:2.6rem;margin-bottom:18px;line-height:1.25}
.hero-text span{color:var(--accent)}
.hero-text p{color:#cfcfe6;margin-bottom:26px;max-width:480px}
.hero-visual{flex:1;min-width:260px;text-align:center;animation:float 5s ease-in-out infinite}
.hero-visual .glow-card{background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:22px;padding:50px;color:#fff;font-size:4rem;box-shadow:0 20px 60px rgba(91,61,245,.5)}

@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.fade-up{animation:fadeUp .7s ease both}

/* ---------- Sections ---------- */
.section{padding:70px 0}
.section-title{text-align:center;margin-bottom:44px}
.section-title h2{font-size:2rem;margin-bottom:8px}
.section-title p{color:var(--muted)}

/* ---------- Course cards ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:26px}
.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:.3s;animation:fadeUp .6s ease both}
.card:hover{transform:translateY(-8px);box-shadow:0 20px 40px rgba(30,20,90,.15)}
.card-img{height:160px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:2.4rem}
.card-body{padding:20px}
.card-body h3{font-size:1.1rem;margin-bottom:8px}
.card-body p{color:var(--muted);font-size:.9rem;margin-bottom:14px;min-height:40px}
.price{font-weight:700;color:var(--primary);font-size:1.15rem}
.card-footer{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-top:1px solid #eee}

/* ---------- Notice board ---------- */
.notice-list{display:flex;flex-direction:column;gap:14px}
.notice-item{background:#fff;border-left:4px solid var(--primary);border-radius:10px;padding:16px 20px;box-shadow:var(--shadow)}
.notice-item h4{margin-bottom:4px}
.notice-item span{font-size:.8rem;color:var(--muted)}

/* ---------- Forms ---------- */
.form-wrap{max-width:440px;margin:60px auto;background:#fff;padding:38px;border-radius:var(--radius);box-shadow:var(--shadow);animation:fadeUp .6s ease both}
.form-wrap h2{margin-bottom:22px;text-align:center}
.form-group{margin-bottom:18px}
.form-group label{display:block;margin-bottom:6px;font-weight:500;font-size:.9rem}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:11px 14px;border:1.5px solid #e2e2ee;border-radius:10px;font-size:.95rem;transition:.2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary)}
.alert{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-size:.9rem}
.alert-error{background:#ffe7e7;color:#b60000}
.alert-success{background:#e4fff3;color:#028a5b}
.form-footer{text-align:center;margin-top:14px;font-size:.9rem;color:var(--muted)}

/* ---------- Dashboard layout ---------- */
.dash{display:flex;min-height:100vh}
.sidebar{width:250px;background:var(--bg);color:#fff;padding:26px 18px;flex-shrink:0}
.sidebar .brand{color:#fff;-webkit-text-fill-color:#fff;margin-bottom:30px;display:block}
.sidebar a{display:block;padding:11px 14px;border-radius:10px;color:#cfcfe6;margin-bottom:4px;font-size:.92rem;transition:.2s}
.sidebar a:hover,.sidebar a.active{background:var(--primary);color:#fff}
.main{flex:1;padding:30px;background:var(--light-bg)}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px}
.stat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:30px}
.stat-card{background:#fff;padding:22px;border-radius:var(--radius);box-shadow:var(--shadow)}
.stat-card h3{font-size:1.6rem;color:var(--primary)}
.stat-card p{color:var(--muted);font-size:.85rem}

table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
th,td{padding:13px 16px;text-align:left;font-size:.9rem;border-bottom:1px solid #f0f0f5}
th{background:#f6f6fc;color:var(--muted);font-weight:600}
.badge{padding:4px 12px;border-radius:20px;font-size:.75rem;font-weight:600}
.badge-pending{background:#fff3cd;color:#a06b00}
.badge-complete{background:#d8f9e9;color:#028a5b}
.badge-active{background:#e4e8ff;color:var(--primary)}

/* ---------- Footer ---------- */
footer{background:var(--bg);color:#aaa;padding:36px 0;text-align:center;font-size:.88rem}

@media(max-width:768px){
  .dash{flex-direction:column}
  .sidebar{width:100%;display:flex;overflow-x:auto;gap:6px}
  .sidebar .brand{display:none}
  .nav-links{display:none}
}