:root{--bg:#090b12;--panel:#111525;--panel2:#161b31;--text:#f5f7ff;--muted:#a8b0c7;--line:#252b46;--accent:#7c4dff;--accent2:#00c2ff;--success:#0fa968;--danger:#d85166}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top,rgba(124,77,255,.18),transparent 30%),linear-gradient(180deg,#05070d,#090b12 45%,#05070d);color:var(--text);font-family:Inter,Arial,sans-serif}a{color:inherit;text-decoration:none}.container{width:min(1180px,92vw);margin:0 auto}.topbar{position:sticky;top:0;background:rgba(5,7,13,.78);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08);z-index:20}.nav-wrap{display:flex;justify-content:space-between;align-items:center;padding:18px 0}.brand{font-weight:800;font-size:2rem;letter-spacing:-.03em}.nav{display:flex;gap:24px;align-items:center}.nav a{color:#e8ebff}.page{padding:28px 0 60px}.hero{padding:44px 0 26px;display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}.hero-card,.panel,.card,.form-card{background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.09);box-shadow:0 20px 50px rgba(0,0,0,.25);border-radius:26px}.hero-card{padding:38px}.hero h1{font-size:3.4rem;line-height:1.02;margin:0 0 12px}.hero p{color:var(--muted);font-size:1.08rem;line-height:1.6}.hero-cta{display:flex;gap:14px;margin-top:24px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 20px;border-radius:14px;border:0;background:var(--accent);color:#fff;font-weight:700;cursor:pointer}.btn-secondary{background:transparent;border:1px solid rgba(255,255,255,.14)}.hero-side{padding:22px;min-height:340px;background:linear-gradient(135deg,rgba(124,77,255,.22),rgba(0,194,255,.08));display:flex;flex-direction:column;justify-content:flex-end}.badge{display:inline-block;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.08);font-size:.84rem;color:#d8def8}.section-title{font-size:1.6rem;margin:28px 0 18px}.grid{display:grid;gap:18px}.courses-grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}.card{overflow:hidden}.course-thumb{height:160px;background:linear-gradient(135deg,#242a49,#0d1222);display:flex;align-items:flex-end;padding:18px;font-weight:800;font-size:1.2rem}.card-body{padding:18px}.muted{color:var(--muted)}.price{font-size:1.4rem;font-weight:800;margin:12px 0}.alert{padding:16px 18px;border-radius:16px;margin-bottom:18px;border:1px solid transparent}.alert-success{background:rgba(15,169,104,.12);border-color:rgba(15,169,104,.4)}.alert-danger{background:rgba(216,81,102,.12);border-color:rgba(216,81,102,.45)}.form-card{max-width:520px;margin:46px auto;padding:28px}.form-card h1{margin-top:0;font-size:2.2rem}.label{display:block;margin:12px 0 8px;font-weight:700}.input,.select,.textarea{width:100%;padding:14px 16px;border-radius:14px;border:1px solid rgba(255,255,255,.09);background:#090b14;color:#fff}.textarea{min-height:120px;resize:vertical}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;background:rgba(255,255,255,.02);border-radius:18px;overflow:hidden}.table th,.table td{padding:14px 16px;border-bottom:1px solid rgba(255,255,255,.08);text-align:left}.table th{background:rgba(255,255,255,.03)}.row-actions{display:flex;gap:8px;flex-wrap:wrap}.btn-sm{padding:10px 14px;border-radius:10px;font-size:.92rem}.btn-danger{background:var(--danger)}.btn-success{background:var(--success)}.admin-grid{display:grid;grid-template-columns:260px 1fr;gap:22px}.sidebar{padding:20px;position:sticky;top:90px;height:fit-content}.sidebar a{display:block;padding:12px 14px;border-radius:12px;color:#ecf0ff}.sidebar a:hover,.sidebar a.active{background:rgba(124,77,255,.18)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}.stat{padding:22px}.stat strong{display:block;font-size:2rem;margin-top:8px}.course-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}.module{padding:18px;margin-bottom:14px}.lesson{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-top:1px solid rgba(255,255,255,.08)}.player{padding:20px}.video-box{height:360px;border-radius:22px;background:linear-gradient(135deg,#1f2542,#090d18);display:flex;align-items:center;justify-content:center;color:#d7defc;font-size:1.2rem}.footer{padding:28px 0;color:var(--muted);border-top:1px solid rgba(255,255,255,.08);margin-top:24px}.toolbar{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:18px;flex-wrap:wrap}.empty{padding:28px;text-align:center;color:var(--muted)}
@media (max-width:900px){.hero,.course-layout,.admin-grid{grid-template-columns:1fr}.stats{grid-template-columns:1fr}.nav{gap:14px;font-size:.95rem}.hero h1{font-size:2.4rem}}