:root{--primary-color: #007bff;--secondary-color: #6c757d;--success-color: #28a745;--danger-color: #dc3545;--warning-color: #ffc107;--info-color: #17a2b8;--light-color: #f8f9fa;--dark-color: #343a40;--text-color: #333333;--text-muted: #6c757d;--bg-color: #f7f9fb;--card-bg: #ffffff;--border-color: #e0e0e0;--border-light: #f0f0f0;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .1)}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:1rem;line-height:1.5;color:var(--text-color);background-color:var(--bg-color)}button{cursor:pointer;font-family:inherit;font-size:1rem;border:none;border-radius:4px;padding:.5rem 1rem;background-color:var(--primary-color);color:#fff;transition:all .3s ease}button:hover{opacity:.9;transform:translateY(-1px);box-shadow:var(--shadow-sm)}button:disabled{opacity:.5;cursor:not-allowed}input,textarea,select{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:4px;font-size:1rem;font-family:inherit;transition:border-color .3s}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #007bff1a}input[type=checkbox],input[type=radio]{width:auto;margin-right:.5rem}label{display:block;margin-bottom:.25rem;font-weight:500;color:var(--text-color)}.card,.page,.section{background:var(--card-bg);border:1px solid var(--border-color);border-radius:8px;padding:1.5rem;box-shadow:var(--shadow-sm)}.grid{display:grid;gap:1.5rem}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}table{width:100%;border-collapse:collapse;background:var(--card-bg);border:1px solid var(--border-color);border-radius:8px;overflow:hidden}thead{background-color:var(--light-color)}th,td{text-align:left;padding:.75rem 1rem;border-bottom:1px solid var(--border-color)}th{font-weight:600;color:var(--text-color)}tbody tr:hover{background-color:var(--light-color)}.toolbar{display:flex;justify-content:space-between;gap:16px;align-items:center;background:var(--card-bg);padding:1rem;border-radius:8px;border:1px solid var(--border-color);margin-bottom:1.5rem}.app-shell{display:grid;grid-template-columns:260px 1fr;min-height:100vh;background-color:var(--bg-color)}.sidebar{background:#0f172a;color:#fff;padding:18px;overflow-y:auto;border-right:1px solid var(--border-color);box-shadow:var(--shadow-sm)}.sidebar a{display:block;color:#fff;text-decoration:none;padding:12px 0;border-radius:4px;transition:all .3s}.sidebar a:hover{background-color:#ffffff1a;padding-left:.5rem}.content{padding:0;overflow-y:auto;background-color:var(--bg-color)}.brand-logo{max-height:56px;max-width:100%;margin-bottom:1rem;display:block}.sidebar h2{margin-top:0;margin-bottom:.5rem;font-size:1.3rem}.small{font-size:.875rem;color:#999}.top-right{display:flex;gap:12px;align-items:center;font-size:.95rem}.top-right select{width:auto;padding:.5rem .75rem}.top-right button{padding:.5rem 1rem;font-size:.9rem}.top-right span{color:var(--text-muted)}.text-center{text-align:center}.text-right{text-align:right}.text-muted{color:var(--text-muted)}.text-danger{color:var(--danger-color)}.text-success{color:var(--success-color)}.metric{font-size:28px;font-weight:700;color:var(--primary-color)}.error{color:var(--danger-color);font-weight:500}@media (max-width: 768px){.app-shell{grid-template-columns:1fr}.sidebar{display:none}.toolbar{flex-direction:column;align-items:flex-start}.top-right{flex-direction:column;width:100%}.grid-2,.grid-3{grid-template-columns:1fr}}