:root{--primary: #4F46E5;--primary-hover: #4338CA;--bg-color: #F9FAFB;--surface: #FFFFFF;--text-main: #111827;--text-muted: #6B7280;--border: #E5E7EB;--danger: #EF4444;--danger-hover: #DC2626;--success: #10B981;--success-bg: #D1FAE5;--warning: #F59E0B;--warning-bg: #FEF3C7;--radius: 8px;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-color);color:var(--text-main);line-height:1.5}.app-container{display:flex;min-height:100vh}.sidebar{width:250px;background-color:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column}.sidebar-header{padding:1.5rem;font-size:1.5rem;font-weight:700;color:var(--primary);border-bottom:1px solid var(--border)}.nav-links{list-style:none;padding:1rem 0}.nav-link{display:block;padding:.75rem 1.5rem;color:var(--text-main);text-decoration:none;font-weight:500;transition:all .2s}.nav-link:hover,.nav-link.active{background-color:#eef2ff;color:var(--primary);border-right:3px solid var(--primary)}.main-content{flex:1;padding:2rem;overflow-y:auto}h1{font-size:1.875rem;font-weight:700;margin-bottom:1.5rem;color:var(--text-main)}h2{font-size:1.25rem;font-weight:600;margin-bottom:1rem}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem;margin-bottom:1.5rem;border:1px solid var(--border)}.card-title{font-size:1.125rem;font-weight:600;color:var(--text-main);margin-bottom:1rem}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.stat-card{background:var(--surface);padding:1.5rem;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);text-align:center;transition:transform .2s}.stat-card:hover{transform:translateY(-2px)}.stat-value{font-size:2.5rem;font-weight:700;color:var(--primary);margin-bottom:.5rem}.stat-label{font-size:.875rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.form-group{margin-bottom:1rem}.form-label{display:block;margin-bottom:.5rem;font-size:.875rem;font-weight:500;color:var(--text-main)}.form-control{width:100%;padding:.75rem 1rem;border:1px solid var(--border);border-radius:var(--radius);font-size:1rem;font-family:inherit;transition:border-color .2s,box-shadow .2s}.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51a}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;font-size:.875rem;font-weight:600;border-radius:var(--radius);border:none;cursor:pointer;transition:all .2s;text-decoration:none}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.btn-danger{background-color:var(--danger);color:#fff}.btn-danger:hover{background-color:var(--danger-hover)}.btn-small{padding:.5rem 1rem;font-size:.75rem}.table-container{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface)}table{width:100%;border-collapse:collapse}thead{background-color:#f3f4f6}th{padding:.75rem 1.5rem;text-align:left;font-size:.75rem;font-weight:600;text-transform:uppercase;color:var(--text-muted);letter-spacing:.05em;border-bottom:1px solid var(--border)}td{padding:1rem 1.5rem;font-size:.875rem;border-bottom:1px solid var(--border);color:var(--text-main)}tr:last-child td{border-bottom:none}tr:hover td{background-color:#f9fafb}.badge{display:inline-flex;align-items:center;padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;font-weight:600}.badge-present{background-color:var(--success-bg);color:#065f46}.badge-absent{background-color:var(--warning-bg);color:#92400e}.error-message{color:var(--danger);font-size:.875rem;margin-top:.5rem}.info-message{color:var(--primary);font-size:.875rem;margin-top:.5rem;background:#eef2ff;padding:1rem;border-radius:var(--radius)}.loading-state,.empty-state{text-align:center;padding:3rem;color:var(--text-muted)}