*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f0f2f5;color:#1a202c}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2)}.login-card{width:380px;background:#fff;border-radius:12px;padding:40px 32px;box-shadow:0 20px 60px #00000026}.login-title{text-align:center;font-size:22px;font-weight:700;margin-bottom:8px;color:#1a202c}.login-subtitle{text-align:center;font-size:14px;color:#718096;margin-bottom:28px}.form-group{margin-bottom:18px}.form-group label{display:block;font-size:14px;font-weight:500;margin-bottom:6px;color:#4a5568}.form-input{width:100%;padding:10px 14px;border:1px solid #e2e8f0;border-radius:8px;font-size:15px;transition:border-color .2s;outline:none}.form-input:focus{border-color:#667eea;box-shadow:0 0 0 3px #667eea26}.btn{width:100%;padding:11px 16px;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s}.btn-primary{background:#667eea;color:#fff}.btn-primary:hover{background:#5a6fd6}.btn-primary:disabled{background:#a0aec0;cursor:not-allowed}.btn-danger{background:#e53e3e;color:#fff}.btn-danger:hover{background:#c53030}.login-error{background:#fff5f5;color:#c53030;padding:10px 14px;border-radius:8px;font-size:14px;margin-bottom:16px}.admin-layout{display:flex;min-height:100vh}.sidebar{width:240px;background:#1a202c;color:#fff;display:flex;flex-direction:column;flex-shrink:0}.sidebar-header{padding:20px 20px 16px;border-bottom:1px solid #2d3748}.sidebar-header h2{font-size:18px;font-weight:700}.sidebar-user{padding:14px 20px;border-bottom:1px solid #2d3748;font-size:13px;color:#a0aec0}.sidebar-user strong{display:block;color:#e2e8f0;font-size:14px}.sidebar-nav{flex:1;padding:12px 0}.sidebar-link{display:block;padding:10px 20px;color:#a0aec0;text-decoration:none;font-size:14px;transition:background .15s,color .15s;border:none;background:none;width:100%;text-align:left;cursor:pointer}.sidebar-link:hover{background:#2d3748;color:#e2e8f0}.sidebar-link.active{background:#2d3748;color:#fff;border-left:3px solid #667eea}.sidebar-footer{padding:16px 20px;border-top:1px solid #2d3748}.main-content{flex:1;padding:32px;overflow-y:auto}.page-header{margin-bottom:24px}.page-header h1{font-size:24px;font-weight:700}.page-header p{color:#718096;font-size:14px;margin-top:4px}.card{background:#fff;border-radius:10px;padding:24px;box-shadow:0 1px 4px #0000000f;margin-bottom:20px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px}thead th{text-align:left;padding:10px 14px;border-bottom:2px solid #e2e8f0;color:#718096;font-weight:600;white-space:nowrap}tbody td{padding:10px 14px;border-bottom:1px solid #edf2f7;white-space:nowrap}.status-badge{display:inline-block;padding:2px 10px;border-radius:12px;font-size:12px;font-weight:600}.status-paid{background:#c6f6d5;color:#22543d}.status-expired{background:#fed7d7;color:#742a2a}.status-pending{background:#fefcbf;color:#744210}.status-cancelled{background:#e2e8f0;color:#4a5568}.pagination{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:14px}.pagination button{padding:6px 14px;border:1px solid #e2e8f0;border-radius:6px;background:#fff;cursor:pointer;font-size:13px}.pagination button:disabled{opacity:.4;cursor:not-allowed}.pagination span{color:#718096}.filter-bar{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap;align-items:flex-end}.filter-bar .form-group{margin-bottom:0;min-width:160px}.filter-bar .btn{width:auto;padding:9px 20px;font-size:14px}.filter-bar label{font-size:13px;margin-bottom:4px}.toast{position:fixed;top:20px;right:20px;padding:12px 20px;border-radius:8px;font-size:14px;z-index:999;animation:slideIn .3s ease}.toast-success{background:#c6f6d5;color:#22543d}.toast-error{background:#fed7d7;color:#742a2a}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:#fff;border-radius:10px;padding:20px 24px;box-shadow:0 1px 4px #0000000f}.stat-card h3{font-size:13px;color:#718096;font-weight:500;margin-bottom:8px}.stat-card .stat-value{font-size:28px;font-weight:700}