body {
    background-color: #f4f6f9;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-bg {
    background: url('../img/merenda.jpg') no-repeat center center fixed, #f4f6f9; /* Merenda com fallback */
    background-size: cover;
    position: relative;
}

.login-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.navbar {
    background: linear-gradient(90deg, #007bff, #0056b3);
    padding: 1rem;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
}

.nav-link {
    transition: all 0.3s;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
}

.card {
    border: none;
    border-radius: 10px;
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-5px);
}

.btn-primary {
    background: #007bff;
    border: none;
    transition: all 0.3s;
}

.btn-primary:hover {
    background: #0056b3;
    transform: translateY(-2px);
}

.table {
    background: white;
    border-radius: 10px;
    overflow: hidden;
}

.table th {
    background: #f8f9fa;
    font-weight: 600;
}

.alert {
    border-radius: 8px;
}