:root{--blue:#2463d8;--blue2:#4d92f5;--ink:#17233c;--muted:#64748b;--line:#e2e8f0;--bg:#f7f9fc;--white:#fff;--green:#16a36b;--red:#ef4c55;--purple:#9a52e9}
*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--ink);background:var(--bg)}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}.sidebar{position:fixed;inset:0 auto 0 0;width:252px;background:#fff;border-right:1px solid var(--line);padding:20px 12px;z-index:10}.brand{display:flex;align-items:center;gap:10px;padding:5px 8px 22px}.brand strong{display:block;font-size:16px}.brand small{display:block;color:#718096;font-size:11px;margin-top:2px}.brand-mark{width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,#2450c7,#4c94f5);color:#fff;display:grid;place-items:center;font-weight:800;font-size:20px}.sidebar nav{display:flex;flex-direction:column;gap:4px}.nav-label{font-size:10px;font-weight:700;letter-spacing:1px;color:#91a0b6;padding:15px 15px 6px}.sidebar nav a{padding:11px 14px;border-radius:12px;color:#50627d;font-size:14px;display:flex;gap:13px;align-items:center}.sidebar nav a:hover,.sidebar nav a.active{background:#edf4ff;color:#1759d1}.logout-link{color:#d14a53!important}.user-box{position:absolute;bottom:16px;left:12px;right:12px;border:1px solid #edf0f5;border-radius:14px;padding:10px;display:flex;align-items:center;gap:10px}.avatar{width:34px;height:34px;border-radius:50%;background:#edf4ff;color:#2463d8;display:grid;place-items:center;font-weight:700}.user-box b{display:block;font-size:12px}.user-box small{color:#8190a5;font-size:10px}.main{margin-left:252px;min-height:100vh}.topbar{height:60px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;color:#26344d}.top-sub{display:block;color:#8995a8;font-size:11px;margin-top:2px}.content{padding:24px}.page-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:1.2px;color:#6e84a3}.page-heading h1{margin:6px 0;font-size:27px}.page-heading p,.muted{color:var(--muted);margin:0}.welcome{border-radius:18px;padding:28px 24px;background:linear-gradient(110deg,#2349b6,#559cf4);color:#fff;display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.welcome span{font-size:11px;letter-spacing:1px;opacity:.85}.welcome h1{margin:6px 0 2px;font-size:25px}.welcome p{margin:0;font-size:13px}.btn{border:0;border-radius:10px;padding:10px 16px;cursor:pointer;display:inline-block;font-weight:600;font-size:13px}.btn.primary{background:var(--blue);color:#fff}.btn.light{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.45);color:#fff}.btn.success{background:var(--green);color:#fff}.btn.small{padding:6px 10px;font-size:11px;background:#edf4ff;color:#2463d8}.btn.full{width:100%}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:24px}.stat-card{background:#fff;border:1px solid var(--line);border-radius:17px;padding:25px;min-height:145px;display:flex;flex-direction:column;justify-content:center;gap:12px}.stat-card .stat-icon{width:40px;height:40px;border-radius:11px;background:#edf4ff;color:#2463d8;display:grid;place-items:center}.stat-card .stat-icon.green{background:#edf9f3;color:#0da56a}.stat-card .stat-icon.red{background:#fff0f1;color:#ef4c55}.stat-card .stat-icon.purple{background:#faf0ff;color:#9a52e9}.stat-card strong{display:block;font-size:24px;color:#17233c}.stat-card strong small{font-size:14px;color:#8391a6}.stat-card span{display:block;color:#62738d;font-size:12px;margin-top:3px}.panel{background:#fff;border:1px solid var(--line);border-radius:17px;padding:22px;margin-bottom:20px}.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.panel-head h2{font-size:15px;margin:0}.progress{height:10px;background:#edf1f6;border-radius:20px;overflow:hidden}.progress span{display:block;height:100%;background:linear-gradient(90deg,#2d63d5,#5aa0f5);border-radius:20px}.quick-grid,.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.quick-card,.content-card{border:1px solid var(--line);border-radius:14px;padding:18px;background:#fff;transition:.2s}.quick-card:hover,.content-card:hover{transform:translateY(-2px);border-color:#bfd4fa;box-shadow:0 8px 25px rgba(31,72,130,.08)}.quick-card b{display:block;margin-bottom:7px}.quick-card span,.content-card p{font-size:12px;color:var(--muted)}.content-card small{display:block;color:#6d84a3;margin:10px 0 5px}.content-card h3{margin:0 0 8px;font-size:16px}.card-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:#edf4ff;color:#2463d8}.card-icon.green{background:#edf9f3;color:#0da56a}.link{display:block;color:#2463d8;font-size:12px;font-weight:700;margin-top:14px}.two-col{display:grid;grid-template-columns:330px 1fr;gap:20px}.form{display:flex;flex-direction:column;gap:14px}.form label{font-size:12px;font-weight:700;color:#44546c}.form input,.form select,.form textarea{display:block;width:100%;margin-top:7px;border:1px solid #dbe2eb;border-radius:10px;padding:11px 12px;outline:none;background:#fff}.form textarea{min-height:90px;resize:vertical}.form input:focus,.form select:focus,.form textarea:focus{border-color:#75a5f2;box-shadow:0 0 0 3px #edf4ff}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:12px}th,td{text-align:left;padding:13px 12px;border-bottom:1px solid #edf0f4;white-space:nowrap}th{color:#73829a;font-size:11px;text-transform:uppercase;letter-spacing:.5px}.badge{padding:5px 8px;border-radius:20px;font-size:10px}.badge.active{background:#eaf8f1;color:#0d9861}.badge.inactive{background:#fff0f0;color:#d6434c}.auth-page{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(135deg,#f5f8ff,#eef4ff)}.auth-card{width:min(440px,100%);background:#fff;border:1px solid var(--line);border-radius:22px;padding:32px;box-shadow:0 20px 60px rgba(25,57,105,.08)}.center{justify-content:center}.auth-card h1{margin:25px 0 5px;font-size:26px}.auth-bottom{text-align:center;color:var(--muted);font-size:13px;margin:20px 0 0}.auth-bottom a{color:var(--blue);font-weight:700}.alert{padding:11px 13px;border-radius:10px;font-size:12px;margin:15px 0}.alert.danger{background:#fff0f1;color:#c7353e}.alert.success{background:#eaf8f1;color:#0b8e5b}.narrow{max-width:600px}.video-box{aspect-ratio:16/9;margin:20px 0;background:#101827;border-radius:14px;overflow:hidden}.video-box iframe{width:100%;height:100%;border:0}.option{display:block;border:1px solid var(--line);border-radius:10px;padding:12px;margin:8px 0;font-weight:400!important}.option:hover{background:#f7faff}.question h3{margin-top:0}.result{text-align:center;padding:50px}.notification{font-size:20px}.lesson h1{font-size:28px}
@media(max-width:1000px){.stat-grid{grid-template-columns:repeat(2,1fr)}.quick-grid,.card-grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:1fr}}
@media(max-width:720px){.sidebar{position:relative;width:100%;height:auto;border-right:0;border-bottom:1px solid var(--line);padding:10px}.sidebar nav{display:grid;grid-template-columns:repeat(2,1fr)}.sidebar .nav-label{grid-column:1/-1;padding:9px}.sidebar nav a{padding:9px}.user-box{position:relative;left:auto;right:auto;bottom:auto;margin:8px 0}.main{margin-left:0}.topbar{height:54px;padding:0 15px}.content{padding:15px}.welcome{padding:22px;align-items:flex-start;gap:15px}.welcome .btn{display:none}.stat-grid{grid-template-columns:1fr 1fr;gap:10px}.stat-card{min-height:120px;padding:17px}.stat-card strong{font-size:20px}.quick-grid,.card-grid{grid-template-columns:1fr}.page-heading h1{font-size:23px}.two-col{grid-template-columns:1fr}.table-wrap{margin-left:0;margin-right:0}.table-wrap table{min-width:620px}.auth-card{padding:24px}}