:root{--primary-color: #1f2937;--secondary-color: #3b82f6;--accent-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--border-color: #e5e7eb;--bg-light: #f9fafb;--text-primary: #111827;--text-secondary: #6b7280;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;font-family:Roboto,sans-serif;color:var(--text-primary);background-color:#fff}body{line-height:1.5;font-size:14px}h1{font-size:32px;font-weight:500;line-height:1.2;margin-bottom:16px}h2{font-size:24px;font-weight:500;line-height:1.3;margin-bottom:12px}h3{font-size:18px;font-weight:500;line-height:1.4;margin-bottom:10px}h4{font-size:16px;font-weight:500;margin-bottom:8px}p{margin-bottom:12px;color:var(--text-secondary)}a{color:var(--secondary-color);text-decoration:none;transition:color .2s ease}a:hover{color:#1e40af;text-decoration:underline}.container{max-width:1200px;margin:0 auto;padding:0 16px}.card{background:#fff;border:1px solid var(--border-color);border-radius:8px;padding:20px;box-shadow:var(--shadow-sm);transition:box-shadow .2s ease}.card:hover{box-shadow:var(--shadow-md)}.grid{display:grid;gap:20px}.grid-cols-1{grid-template-columns:1fr}.grid-cols-2{grid-template-columns:repeat(auto-fit,minmax(400px,1fr))}.grid-cols-3{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}@media(max-width:768px){.grid-cols-2,.grid-cols-3{grid-template-columns:1fr}}input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border-color);border-radius:6px;font-size:14px;font-family:inherit;transition:border-color .2s ease}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--secondary-color);box-shadow:0 0 0 3px #3b82f61a}label{display:block;font-weight:500;margin-bottom:6px;color:var(--text-primary)}.form-group{margin-bottom:16px}.form-group:last-child{margin-bottom:0}button,.btn{display:inline-block;padding:10px 16px;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease;text-align:center;text-decoration:none}.btn-primary{background-color:var(--secondary-color);color:#fff}.btn-primary:hover{background-color:#1e40af;box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--bg-light);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background-color:#f3f4f6}.btn-danger{background-color:var(--danger-color);color:#fff}.btn-danger:hover{background-color:#dc2626}.btn-success{background-color:var(--accent-color);color:#fff}.btn-success:hover{background-color:#059669}.btn-sm{padding:6px 12px;font-size:12px}.btn-lg{padding:12px 20px;font-size:16px}.btn:disabled{opacity:.5;cursor:not-allowed}.mt-1{margin-top:4px}.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mb-1{margin-bottom:4px}.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.px-4{padding-left:16px;padding-right:16px}.py-4{padding-top:16px;padding-bottom:16px}.text-center{text-align:center}.text-right{text-align:right}.text-muted{color:var(--text-secondary)}.text-error{color:var(--danger-color)}.text-success{color:var(--accent-color)}.text-warning{color:var(--warning-color)}.text-small{font-size:12px}.badge{display:inline-block;padding:4px 8px;border-radius:4px;font-size:12px;font-weight:500}.badge-primary{background-color:#3b82f61a;color:var(--secondary-color)}.badge-success{background-color:#10b9811a;color:var(--accent-color)}.badge-danger{background-color:#ef44441a;color:var(--danger-color)}.badge-warning{background-color:#f59e0b1a;color:var(--warning-color)}table{width:100%;border-collapse:collapse}th{background-color:var(--bg-light);padding:12px;text-align:left;font-weight:500;border-bottom:1px solid var(--border-color)}td{padding:12px;border-bottom:1px solid var(--border-color)}tr:hover{background-color:var(--bg-light)}.alert{padding:12px 16px;border-radius:6px;margin-bottom:16px;display:flex;align-items:flex-start;gap:12px}.alert-info{background-color:#3b82f61a;color:var(--secondary-color);border-left:4px solid var(--secondary-color)}.alert-success{background-color:#10b9811a;color:var(--accent-color);border-left:4px solid var(--accent-color)}.alert-error{background-color:#ef44441a;color:var(--danger-color);border-left:4px solid var(--danger-color)}.alert-warning{background-color:#f59e0b1a;color:var(--warning-color);border-left:4px solid var(--warning-color)}.spinner{display:inline-block;width:16px;height:16px;border:2px solid var(--border-color);border-top-color:var(--secondary-color);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading{display:flex;align-items:center;justify-content:center;gap:12px;padding:20px}