:root{--bg:#070b13;--panel:#0d1522;--panel2:#121c2b;--line:#263244;--text:#f7f8fc;--muted:#94a0b2;--purple:#8b5cf6;--purple2:#5b2cc4;--green:#22c55e;--amber:#f59e0b;--red:#ef4444;--blue:#3b82f6}*{box-sizing:border-box}body{margin:0;color:var(--text);background:var(--bg);font:14px/1.5 Inter,system-ui,sans-serif}button,input,textarea,select{font:inherit}.app{min-height:100vh;display:grid;grid-template-columns:245px 1fr}.sidebar{position:sticky;top:0;height:100vh;padding:26px 18px;border-right:1px solid var(--line);background:#09111c}.logo{display:flex;align-items:center;gap:10px;margin:0 10px 34px;font-weight:800;font-size:18px}.logo i{display:grid;width:35px;height:35px;place-items:center;border-radius:10px;background:linear-gradient(135deg,var(--purple),var(--purple2));font-style:normal}.nav-title{margin:25px 12px 8px;color:#66758b;font-size:10px;font-weight:800;letter-spacing:.14em}.nav a,.nav button{width:100%;display:flex;align-items:center;gap:12px;padding:11px 12px;border:0;border-radius:9px;color:#c7cfda;background:none;text-decoration:none;text-align:left;cursor:pointer}.nav .active,.nav a:hover,.nav button:hover{color:#fff;background:linear-gradient(90deg,rgba(139,92,246,.28),rgba(139,92,246,.05))}.sidebar-bottom{position:absolute;left:18px;right:18px;bottom:24px}.main{padding:32px clamp(20px,4vw,56px)}.top{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:28px}.top h1{margin:0;font-size:30px}.top p{margin:4px 0 0;color:var(--muted)}.user-chip{display:flex;align-items:center;gap:10px}.avatar{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:var(--purple2);font-weight:800}.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}.card{grid-column:span 4;padding:20px;border:1px solid var(--line);border-radius:15px;background:linear-gradient(145deg,var(--panel2),var(--panel))}.card.wide{grid-column:span 8}.card.full{grid-column:1/-1}.metric 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var(--line);background:transparent}.button.danger{background:#7f1d1d}.button:disabled{opacity:.45;cursor:not-allowed}.status{display:inline-flex;padding:5px 9px;border-radius:999px;font-size:11px;font-weight:800}.status.active,.status.paid{color:#b9f7cc;background:rgba(34,197,94,.15)}.status.grace,.status.pending{color:#fde0a0;background:rgba(245,158,11,.15)}.status.expired,.status.cancelled{color:#fdb5b5;background:rgba(239,68,68,.15)}table{width:100%;border-collapse:collapse}th,td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left}th{color:var(--muted);font-size:11px;text-transform:uppercase}tbody tr{cursor:pointer}tbody tr:hover{background:rgba(139,92,246,.06)}.lesson{display:flex;align-items:center;gap:13px;padding:13px 0;border-bottom:1px solid var(--line)}.lesson-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:10px;color:#c9aaff;background:rgba(139,92,246,.15)}.lesson div{flex:1}.lesson strong,.lesson small{display:block}.lesson 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15px}.card,.card.wide{grid-column:1/-1}.top{align-items:flex-start}.form{grid-template-columns:1fr}.form .full{grid-column:auto}.table-wrap{overflow:auto}}