*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0f0f13;--bg-card:#1a1a24;--bg-card2:#22223a;--primary:#6c63ff;--primary-h:#5a52e0;--success:#17b26a;--warning:#ffd400;--danger:#f04438;--info:#A1C9F4;--text:#fbfbff;--text-muted:#909094;--border:#2e2e45;--radius:12px;--radius-sm:8px}
body{background:var(--bg);color:var(--text);font-family:'Segoe UI',system-ui,sans-serif;font-size:15px;line-height:1.6;min-height:100vh}
.navbar{display:flex;justify-content:space-between;align-items:center;padding:16px 32px;background:var(--bg-card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.nav-brand{font-size:22px;font-weight:700;color:var(--primary)}.nav-links{display:flex;align-items:center;gap:12px}.nav-user{color:var(--text-muted);font-size:14px}
.container{max-width:960px;margin:48px auto;padding:0 20px}
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:36px;max-width:480px;margin:0 auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;border:none;transition:all .2s;text-decoration:none}
.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-h);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}.btn-danger{background:var(--danger);color:#fff}.btn-ghost{background:transparent;color:var(--text-muted)}
.btn-copy{background:var(--bg-card2);border:1px solid var(--border);color:var(--text-muted);padding:4px 10px;border-radius:6px;cursor:pointer;font-size:12px;transition:all .2s}
.full-width{width:100%;margin-top:8px}
h2{font-size:24px;font-weight:700;margin-bottom:6px}.subtitle{color:var(--text-muted);margin-bottom:28px;font-size:14px}
.form-group{margin-bottom:18px}.form-group label{display:block;font-size:13px;font-weight:600;color:var(--text-muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}
.form-group input,.currency-select{width:100%;background:var(--bg-card2);border:1.5px solid var(--border);color:var(--text);padding:11px 14px;border-radius:var(--radius-sm);font-size:15px;outline:none;transition:border-color .2s}
.form-group input:focus,.currency-select:focus{border-color:var(--primary)}.center-text{text-align:center}.center-text a,p a{color:var(--primary);cursor:pointer;text-decoration:none}
.alert{padding:12px 16px;border-radius:var(--radius-sm);font-size:14px;margin-bottom:16px}
.alert-error{background:rgba(240,68,56,.12);color:#ff6b6b;border:1px solid rgba(240,68,56,.3)}.alert-info{background:rgba(161,201,244,.1);color:var(--info);border:1px solid rgba(161,201,244,.2);margin-top:16px}
.badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:13px;font-weight:600}
.badge-waiting{background:rgba(255,212,0,.15);color:var(--warning)}.badge-confirming{background:rgba(161,201,244,.15);color:var(--info)}.badge-success{background:rgba(23,178,106,.15);color:var(--success)}.badge-failed{background:rgba(240,68,56,.15);color:var(--danger)}
.plans-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;margin-top:32px}
.plan-card{background:var(--bg-card);border:1.5px solid var(--border);border-radius:var(--radius);padding:28px;position:relative;transition:transform .2s,border-color .2s}
.plan-card:hover{transform:translateY(-4px);border-color:var(--primary)}.plan-featured{border-color:var(--primary);background:linear-gradient(135deg,#1a1a24,#1e1b38)}
.popular-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--primary);color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:20px;white-space:nowrap}
.plan-card h3{font-size:20px;margin-bottom:12px}.plan-price{margin:12px 0 20px;display:flex;align-items:baseline;gap:4px}
.plan-price .price{font-size:36px;font-weight:800;color:var(--primary)}.plan-price .period{color:var(--text-muted);font-size:14px}
.feature-list{list-style:none;margin-bottom:24px}.feature-list li{padding:6px 0;font-size:14px;color:var(--text-muted);border-bottom:1px solid var(--border)}.feature-list li:last-child{border:none}
.plan-badge{background:var(--bg-card2);border:1px solid var(--border);padding:10px 16px;border-radius:var(--radius-sm);margin-bottom:20px;font-size:15px}
.plan-badge .price-tag{color:var(--primary);font-weight:700;font-size:18px}.divider{height:1px;background:var(--border);margin:24px 0}
.payment-info{display:flex;gap:24px;align-items:flex-start;flex-wrap:wrap}.qr-container{background:#fff;padding:12px;border-radius:var(--radius-sm);display:inline-block;flex-shrink:0}
.payment-data{flex:1;min-width:200px}.info-row{display:flex;flex-direction:column;margin-bottom:14px}
.info-row .label{font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:4px}.info-row .value{font-size:16px;font-weight:600}
.address-box{display:flex;align-items:center;gap:8px;background:var(--bg-card2);border:1px solid var(--border);padding:8px 12px;border-radius:var(--radius-sm);font-size:12px;word-break:break-all;color:var(--info)}
.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px;flex-wrap:wrap;gap:12px}
.plan-active-card{max-width:100%;background:linear-gradient(135deg,var(--bg-card),#1e1b38);border-color:var(--primary);margin-bottom:24px}
.no-plan-card{max-width:100%;text-align:center;margin-bottom:24px;padding:40px}.no-plan-card h3{margin-bottom:8px}.no-plan-card p{color:var(--text-muted);margin-bottom:20px}
.features-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.feature-tag{background:rgba(23,178,106,.1);color:var(--success);border:1px solid rgba(23,178,106,.2);padding:4px 12px;border-radius:20px;font-size:13px}
.section-title{font-size:18px;font-weight:700;margin-bottom:16px}
.courses-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:28px}
.course-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:transform .2s}.course-card:hover{transform:translateY(-2px)}
.course-icon{font-size:32px;margin-bottom:10px}.course-card h4{font-size:16px;margin-bottom:4px}.course-card p{font-size:13px;color:var(--text-muted);margin-bottom:14px}
.progress-bar{height:6px;background:var(--border);border-radius:4px;overflow:hidden;margin-bottom:6px}.progress{height:100%;background:linear-gradient(90deg,var(--primary),#a78bfa);border-radius:4px;transition:width .5s ease}
.progress-text{font-size:12px;color:var(--text-muted)}.history-card{max-width:100%;margin-top:0}.history-card h3{margin-bottom:16px}
.history-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--border);gap:12px}.history-row:last-child{border:none}
.no-data{color:var(--text-muted);text-align:center;padding:20px 0}.loading{color:var(--text-muted);padding:20px;text-align:center}
@media(max-width:600px){.navbar{padding:14px 16px}.container{margin:24px auto}.card{padding:24px 18px}.payment-info{flex-direction:column;align-items:center}.plans-grid{grid-template-columns:1fr}}