:root{--bg-color: #f8f9fa;--card-bg: #ffffff;--text-primary: #2d3436;--text-secondary: #636e72;--accent-color: #0984e3;--accent-hover: #74b9ff;--border-color: #dfe6e9;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .05);--radius: 12px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif}body{margin:0;font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}.container{max-width:800px;margin:0 auto;padding:2rem}h1,h2,h3{font-weight:600;margin-top:0;color:var(--text-primary)}h1{font-size:1.8rem;letter-spacing:-.5px}.card{background:var(--card-bg);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow-sm);border:1px solid var(--border-color);margin-bottom:1.5rem;transition:transform .2s ease,box-shadow .2s ease}.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.input-group{margin-bottom:1.25rem}label{display:block;margin-bottom:.5rem;font-size:.9rem;font-weight:500;color:var(--text-secondary)}input[type=text],input[type=number],input[type=date],input[type=password],input[type=file]{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:8px;background:var(--bg-color);color:var(--text-primary);font-size:1rem;transition:border-color .2s;box-sizing:border-box}input:focus{outline:none;border-color:var(--accent-color);background:#fff}.btn{background-color:var(--accent-color);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-weight:500;cursor:pointer;transition:background-color .2s;font-size:1rem}.btn:hover{background-color:var(--accent-hover)}.btn:disabled{opacity:.7;cursor:not-allowed}.nav{display:flex;gap:1rem;margin-bottom:2rem}.nav-item{padding:.5rem 1rem;cursor:pointer;border-radius:20px;font-size:.9rem;font-weight:500;color:var(--text-secondary);transition:all .2s}.nav-item.active{background-color:var(--text-primary);color:#fff}.stat-card{text-align:center}.stat-row{display:flex;justify-content:space-between;margin-bottom:.5rem;font-size:.95rem}.value{font-weight:600;color:var(--text-primary)}table{width:100%;border-collapse:collapse;font-size:.95rem}th{text-align:left;padding:1rem;color:var(--text-secondary);font-weight:500;border-bottom:1px solid var(--border-color)}td{padding:1rem;border-bottom:1px solid var(--border-color)}tr:last-child td{border-bottom:none}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:2rem}@media (max-width: 600px){.container{padding:1rem}.grid{grid-template-columns:1fr}}