* { box-sizing: border-box; }
body { font-family: Arial, Helvetica, sans-serif; margin: 0; color: #1f2937; background: #f8fafc; }
.container { max-width: 1024px; margin: 0 auto; padding: 16px; }
.site-header { background: #0ea5e9; color: white; }
.site-header h1 { margin: 0; }
.main-nav { margin-top: 8px; display: flex; gap: 12px; }
.main-nav a { color: white; text-decoration: none; padding: 6px 10px; border-radius: 6px; }
.main-nav a:hover { background: rgba(255,255,255,0.2); }
.card { background: white; border: 1px solid #e5e7eb; border-radius: 8px; padding: 16px; margin-bottom: 16px; }
table { width: 100%; border-collapse: collapse; background: white; }
th, td { padding: 10px; border-bottom: 1px solid #e5e7eb; text-align: left; }
th { background: #f1f5f9; }
.btn { display: inline-block; padding: 8px 12px; background: #0ea5e9; color: white; text-decoration: none; border-radius: 6px; }
.btn.secondary { background: #6b7280; }
.btn.danger { background: #ef4444; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
label { display: block; font-weight: 600; margin-bottom: 6px; }
input[type="text"], input[type="date"], textarea, select { width: 100%; padding: 8px; border: 1px solid #cbd5e1; border-radius: 6px; }
.kpi { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.kpi .card { text-align: center; }
.filters { display: flex; gap: 8px; margin-bottom: 12px; }
.site-footer { background: #0ea5e9; color: white; margin-top: 24px; }