*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:#f4f6f8;color:#1f2937}
a{text-decoration:none;color:inherit}.layout{display:flex;min-height:100vh}.sidebar{width:245px;background:#111827;color:white;padding:18px;position:fixed;top:0;bottom:0;overflow:auto}
.brand{font-size:20px;font-weight:800;margin-bottom:22px}.sidebar a{display:block;padding:11px 12px;border-radius:8px;margin:5px 0}.sidebar a:hover{background:#263244}
.content{margin-left:245px;width:calc(100% - 245px);padding:22px}.topbar{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:18px}
.card{background:white;border-radius:12px;padding:16px;box-shadow:0 2px 10px #0000000d;margin-bottom:16px}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.stat{font-size:26px;font-weight:800}.muted{color:#6b7280}.btn{display:inline-block;border:0;border-radius:8px;padding:9px 12px;cursor:pointer;background:#111827;color:white}.btn.green{background:#15803d}.btn.yellow{background:#ca8a04}.btn.red{background:#b91c1c}.btn.blue{background:#2563eb}.btn.gray{background:#6b7280}
table{width:100%;border-collapse:collapse;background:white}th,td{padding:10px;border-bottom:1px solid #e5e7eb;text-align:left;font-size:14px}th{background:#f9fafb}
input,select,textarea{width:100%;padding:10px;border:1px solid #d1d5db;border-radius:7px;background:white}.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.form-group label{display:block;font-size:13px;font-weight:700;margin-bottom:5px}
.badge{padding:5px 8px;border-radius:20px;font-size:12px;font-weight:700}.badge.green{background:#dcfce7;color:#166534}.badge.yellow{background:#fef9c3;color:#854d0e}.badge.red{background:#fee2e2;color:#991b1b}.badge.paid{background:#dbeafe;color:#1e40af}
.row-actions{display:flex;gap:5px;flex-wrap:wrap}.login{max-width:390px;margin:10vh auto}.photo{width:90px;height:90px;object-fit:cover;border-radius:8px;border:1px solid #ddd}
@media(max-width:900px){.sidebar{position:static;width:100%}.layout{display:block}.content{margin:0;width:100%}.grid,.form-grid{grid-template-columns:1fr}.sidebar a{display:inline-block}.table-wrap{overflow:auto}}
@media print{.sidebar,.topbar,.no-print{display:none!important}.content{margin:0;width:100%;padding:0}.card{box-shadow:none}}