:root{--bg:#f6f7f9;--surface:#fff;--border:#e3e6ea;--text:#1a2332;--text-muted:#64707f;--primary:#1f5eff;--primary-dark:#1748c7;--success:#0f8a4c;--success-bg:#e6f6ed;--danger:#c62f2f;--danger-bg:#fbeaea;--warning:#9a6a00;--warning-bg:#fdf3dd;--radius:10px;--shadow:0 1px 3px #10182814}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:15px;line-height:1.5}.container{max-width:1080px;margin:0 auto;padding:0 16px}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.btn{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:8px;padding:9px 16px;font-size:14px;line-height:1.3;text-decoration:none;display:inline-block}.btn:hover{background:#f2f4f7;text-decoration:none}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:disabled{cursor:not-allowed;background:#9db4f5;border-color:#9db4f5}.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn-danger:hover{background:#a82626}.btn-sm{padding:6px 12px;font-size:13px}.btn-block{text-align:center;width:100%;padding:14px;font-size:16px;font-weight:600;display:block}.btn-link{color:var(--text-muted);background:0 0;border:none;padding:6px 8px}.btn-link:hover{color:var(--text);background:0 0;text-decoration:underline}.admin-header{background:var(--surface);border-bottom:1px solid var(--border)}.admin-header-inner{justify-content:space-between;align-items:center;height:56px;display:flex}.brand{color:var(--text);font-size:17px;font-weight:700}.admin-nav{align-items:center;gap:14px;display:flex}.admin-nav a{color:var(--text-muted);font-size:14px}.admin-nav a:hover{color:var(--text)}.admin-nav a.btn-primary{color:#fff}.logout-form{margin:0}.admin-main{padding:24px 16px 60px}.page-title{margin:0 0 16px;font-size:22px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px;padding:20px}.stat-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-bottom:20px;display:grid}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.stat-card .stat-label{color:var(--text-muted);margin-bottom:6px;font-size:13px}.stat-card .stat-value{font-size:24px;font-weight:700}.table-wrapper{overflow-x:auto}table.data{border-collapse:collapse;background:var(--surface);width:100%}table.data th,table.data td{text-align:left;border-bottom:1px solid var(--border);white-space:nowrap;padding:10px 12px;font-size:14px}table.data th{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:12px;font-weight:600}.badge{border-radius:999px;padding:3px 10px;font-size:12px;font-weight:600;display:inline-block}.badge-open{color:#3545c4;background:#eef2ff}.badge-processing{background:var(--warning-bg);color:var(--warning)}.badge-paid,.badge-confirmed,.badge-success{background:var(--success-bg);color:var(--success)}.badge-failed,.badge-cancelled{background:var(--danger-bg);color:var(--danger)}.badge-expired,.badge-pending{color:var(--text-muted);background:#eceff3}.badge-refunded{background:var(--warning-bg);color:var(--warning)}.form-grid{grid-template-columns:1fr 1fr;gap:14px 18px;display:grid}.form-grid .full{grid-column:1/-1}@media (width<=640px){.form-grid{grid-template-columns:1fr}}label.field-label{color:var(--text);margin-bottom:5px;font-size:13px;font-weight:600;display:block}label.field-label .req{color:var(--danger)}input[type=text],input[type=email],input[type=tel],input[type=password],input[type=number],input[type=date],textarea,select{border:1px solid var(--border);width:100%;color:var(--text);background:#fff;border-radius:8px;padding:10px 12px;font-family:inherit;font-size:15px}input:focus,textarea:focus,select:focus{border-color:var(--primary);outline:2px solid #1f5eff59}textarea{resize:vertical;min-height:70px}.field-hint{color:var(--text-muted);margin-top:4px;font-size:12px}.alert{border-radius:8px;margin-bottom:16px;padding:12px 14px;font-size:14px}.alert-error{background:var(--danger-bg);color:var(--danger);border:1px solid #f0c6c6}.alert-success{background:var(--success-bg);color:var(--success);border:1px solid #bfe6cf}.alert-info{color:#3545c4;background:#eef2ff;border:1px solid #ccd6f6}.filter-tabs{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.filter-tabs a{border:1px solid var(--border);background:var(--surface);color:var(--text-muted);border-radius:999px;padding:6px 14px;font-size:13px}.filter-tabs a.active{background:var(--primary);border-color:var(--primary);color:#fff}.detail-grid{grid-template-columns:2fr 1fr;align-items:start;gap:16px;display:grid}@media (width<=800px){.detail-grid{grid-template-columns:1fr}}.kv{border-bottom:1px solid var(--border);justify-content:space-between;gap:12px;padding:8px 0;font-size:14px;display:flex}.kv:last-child{border-bottom:none}.kv .k{color:var(--text-muted)}.kv .v{text-align:right;word-break:break-word;font-weight:500}.login-wrapper{justify-content:center;align-items:center;min-height:100vh;padding:16px;display:flex}.login-card{width:100%;max-width:380px}.login-card h1{margin:0 0 4px;font-size:20px}.login-card .subtitle{color:var(--text-muted);margin-bottom:20px;font-size:14px}.login-card .field{margin-bottom:14px}.payment-body{background:var(--bg)}.payment-wrapper{max-width:440px;margin:0 auto;padding:24px 14px 48px}.payment-card{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:14px;padding:26px 22px}.payment-brand{text-align:center;margin-bottom:18px}.payment-brand .brand-name{font-size:16px;font-weight:700}.payment-brand .brand-sub{color:var(--text-muted);font-size:12px}.payment-title{text-align:center;letter-spacing:.14em;color:var(--text-muted);margin-bottom:14px;font-size:13px;font-weight:600}.payment-product{text-align:center;margin-bottom:2px;font-size:18px;font-weight:700}.payment-customer{text-align:center;color:var(--text-muted);margin-bottom:10px;font-size:14px}.payment-amount{text-align:center;margin:10px 0 4px;font-size:30px;font-weight:800}.payment-amount .cur{color:var(--text-muted);font-size:16px;font-weight:600}.payment-desc{text-align:center;color:var(--text-muted);white-space:pre-line;margin-bottom:20px;font-size:13px}.payment-divider{border:none;border-top:1px dashed var(--border);margin:18px 0}.payment-form .field{margin-bottom:14px}.payment-footer{text-align:center;color:var(--text-muted);margin-top:18px;font-size:12px}.otp-input{letter-spacing:10px;text-align:center;font-size:22px;font-weight:600}.success-icon{text-align:center;margin-bottom:8px;font-size:44px}.hidden{display:none!important}.secure-note{color:var(--text-muted);justify-content:center;align-items:center;gap:6px;margin-top:12px;font-size:12px;display:flex}