body {
    background-color: #f4f6f9;
}
.card {
    border: none;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border-radius: 10px;
}
.stat-card {
    border-radius: 12px;
    color: #fff;
    padding: 20px;
}
.stat-card h3 { margin: 0; font-size: 28px; }
.stat-card p { margin: 0; opacity: 0.9; }
.bg-purple { background: linear-gradient(135deg, #6f42c1, #8a63d2); }
.bg-teal { background: linear-gradient(135deg, #20c997, #17a589); }
.bg-orange { background: linear-gradient(135deg, #fd7e14, #f39c12); }
.bg-blue { background: linear-gradient(135deg, #0d6efd, #3498db); }

.ledger-table th, .ledger-table td {
    text-align: center;
    vertical-align: middle;
    font-size: 13px;
}
.badge-paid { background-color: #198754; }
.badge-unpaid { background-color: #dc3545; }
.badge-winner { background-color: #ffc107; color: #000; }
.month-cell-paid { background-color: #d4edda; }
.month-cell-unpaid { background-color: #f8d7da; }
.month-cell-winner { background-color: #fff3cd; font-weight: bold; }
.month-cell-exempt { background-color: #e2e3e5; color: #6c757d; }

.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #6f42c1, #0d6efd);
}
.login-card {
    max-width: 400px;
    width: 100%;
    padding: 40px;
    border-radius: 16px;
}