:root{--bg:#f4f7fb;--card:#fff;--text:#14213d;--muted:#64748b;--primary:#2563eb;--primary2:#7c3aed;--danger:#ef4444;--success:#16a34a;--warning:#f59e0b;--border:#e2e8f0;--shadow:0 20px 50px rgba(15,23,42,.08)}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:linear-gradient(135deg,#eef5ff,#f8fafc);color:var(--text)}a{text-decoration:none;color:inherit}.app-shell{display:flex;min-height:100vh}.sidebar{width:280px;background:#071327;color:#fff;padding:24px;position:fixed;left:0;top:0;bottom:0;display:flex;flex-direction:column;z-index:10}.brand{display:flex;gap:14px;align-items:center;margin-bottom:32px}.brand-icon{width:46px;height:46px;border-radius:15px;background:linear-gradient(135deg,var(--primary),var(--primary2));display:grid;place-items:center;font-weight:900}.brand span{display:block;color:#94a3b8;font-size:12px;margin-top:4px}.sidebar nav{display:grid;gap:8px}.sidebar nav a{padding:13px 14px;border-radius:14px;color:#cbd5e1}.sidebar nav a:hover{background:rgba(255,255,255,.08);color:#fff}.danger-link{color:#fecaca!important}.sidebar-footer{margin-top:auto;color:#94a3b8;font-size:13px;border-top:1px solid rgba(255,255,255,.1);padding-top:18px}.content{margin-left:280px;width:calc(100% - 280px);padding:28px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.topbar h1{margin:0;font-size:30px}.topbar p{margin:6px 0 0;color:var(--muted)}.menu-btn{display:none}.grid{display:grid;gap:18px}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:24px;padding:22px}.metric{position:relative;overflow:hidden}.metric:after{content:"";position:absolute;width:110px;height:110px;border-radius:999px;background:linear-gradient(135deg,rgba(37,99,235,.13),rgba(124,58,237,.13));right:-30px;top:-30px}.metric span{color:var(--muted);font-size:13px}.metric strong{display:block;font-size:28px;margin-top:10px}.btn{border:0;background:linear-gradient(135deg,var(--primary),var(--primary2));color:white;padding:11px 16px;border-radius:13px;font-weight:700;cursor:pointer;display:inline-flex;gap:8px;align-items:center}.btn.secondary{background:#e2e8f0;color:#0f172a}.btn.danger{background:var(--danger)}.btn.success{background:var(--success)}.toolbar{display:flex;gap:12px;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap}input,select,textarea{width:100%;padding:12px 13px;border:1px solid var(--border);border-radius:14px;background:#fff;font-size:14px}label{font-size:13px;color:var(--muted);font-weight:700}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:13px;border-bottom:1px solid var(--border);text-align:left;white-space:nowrap}.table th{font-size:12px;color:var(--muted);text-transform:uppercase}.badge{display:inline-flex;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:800}.badge.success{background:#dcfce7;color:#166534}.badge.warning{background:#fef3c7;color:#92400e}.badge.danger{background:#fee2e2;color:#991b1b}.badge.muted{background:#e2e8f0;color:#475569}.alert{padding:14px;border-radius:16px;margin-bottom:14px}.alert.success{background:#dcfce7;color:#166534}.alert.danger{background:#fee2e2;color:#991b1b}.alert.warning{background:#fef3c7;color:#92400e}.login-page{min-height:100vh;display:grid;place-items:center;padding:20px}.login-card{width:100%;max-width:430px}.logo-large{width:72px;height:72px;border-radius:24px;background:linear-gradient(135deg,var(--primary),var(--primary2));display:grid;place-items:center;color:white;font-size:30px;font-weight:900;margin:0 auto 18px}.center{text-align:center}.muted{color:var(--muted)}.actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.copy-box{display:flex;gap:8px}.copy-box input{font-size:13px}.hero-pay{max-width:760px;margin:40px auto}.pay-amount{font-size:44px;font-weight:900;margin:10px 0}.qr-placeholder{height:180px;border:2px dashed var(--border);border-radius:20px;display:grid;place-items:center;color:var(--muted);background:#f8fafc}.status-line{display:flex;justify-content:space-between;gap:10px;margin:12px 0;color:var(--muted)}@media(max-width:980px){.sidebar{transform:translateX(-100%);transition:.2s}.sidebar.open{transform:translateX(0)}.content{margin-left:0;width:100%;padding:18px}.menu-btn{display:block;border:0;background:#fff;border-radius:12px;padding:10px 13px}.grid-4,.grid-3,.grid-2,.form-grid{grid-template-columns:1fr}.topbar{align-items:flex-start;gap:14px}.topbar h1{font-size:24px}}