:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --info-color: #3498db;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.navbar {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

main {
    padding: 20px 0 40px 0;
}

.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 20px;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 15px 15px 0 0 !important;
    padding: 15px 20px;
}

.card-header h5 {
    margin: 0;
    font-weight: bold;
}

.btn {
    border-radius: 8px;
    padding: 8px 20px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52,152,219,0.3);
}

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

.table thead th {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
}

.form-control, .form-select {
    border-radius: 8px;
    border: 1px solid #ddd;
    padding: 10px 15px;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52,152,219,0.25);
}

/* Dashboard Cards */
.stat-card {
    background: white;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.stat-card i {
    font-size: 3rem;
    color: var(--secondary-color);
}

.stat-card h3 {
    font-size: 2rem;
    margin: 10px 0;
    font-weight: bold;
}

.stat-card p {
    margin: 0;
    color: #666;
}

/* Animações */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card, .stat-card {
    animation: fadeIn 0.5s ease-out;
}

/* Responsividade */
@media (max-width: 768px) {
    .container-fluid {
        padding: 0 15px;
    }
    
    .table-responsive {
        font-size: 14px;
    }
    
    .btn {
        padding: 6px 12px;
        font-size: 14px;
    }
    
    .stat-card h3 {
        font-size: 1.5rem;
    }
    
    .stat-card i {
        font-size: 2rem;
    }
}

/* Alertas e notificações */
.alert {
    border-radius: 10px;
    border: none;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* Modais */
.modal-content {
    border-radius: 15px;
    border: none;
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 15px 15px 0 0;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
}

/* Badges */
.badge {
    padding: 5px 10px;
    border-radius: 20px;
    font-weight: 500;
}

/* Paginação */
.pagination .page-link {
    border-radius: 8px;
    margin: 0 3px;
    color: var(--primary-color);
}

.pagination .active .page-link {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

/* Gráficos e Dashboards */
.chart-container {
    position: relative;
    height: 300px;
    margin: 20px 0;
}

/* Upload de imagens */
.image-preview {
    max-width: 200px;
    max-height: 200px;
    margin: 10px 0;
    border-radius: 10px;
    overflow: hidden;
}

.image-preview img {
    width: 100%;
    height: auto;
}

/* Footer */
footer {
    background: var(--dark-color);
    color: white;
    padding: 20px 0;
    margin-top: 40px;
}