/* Variáveis de cores */
:root {
    --cor-primaria: #001f3f; /* Azul Marinho */
    --cor-secundaria: #007bff; /* Azul vibrante para detalhes */
    --cor-texto: #333;
    --cor-fundo: #f8f9fa;
    --cor-borda: #dee2e6;
    --cor-sucesso: #28a745;
    --cor-erro: #dc3545;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--cor-fundo);
    color: var(--cor-texto);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 15px;
}

/* Header */
.header {
    background-color: var(--cor-primaria);
    color: white;
    padding: 15px 0;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.header h1 {
    margin: 0;
    font-size: 2.5em;
}

/* Navegação */
.navbar {
    background-color: var(--cor-secundaria);
    padding: 10px 0;
    text-align: center;
}

.navbar a {
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    margin: 0 5px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.navbar a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Botões */
.btn {
    display: inline-block;
    background-color: var(--cor-secundaria);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #0056b3;
}

.btn-primary { background-color: var(--cor-primaria); }
.btn-primary:hover { background-color: #001228; }
.btn-success { background-color: var(--cor-sucesso); }
.btn-success:hover { background-color: #218838; }
.btn-danger { background-color: var(--cor-erro); }
.btn-danger:hover { background-color: #c82333; }

/* Formulários */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--cor-borda);
    border-radius: 4px;
    box-sizing: border-box; /* Garante padding e border não aumentam a largura total */
}

/* Cards/Painéis */
.card {
    background-color: white;
    border: 1px solid var(--cor-borda);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.card-header {
    background-color: var(--cor-primaria);
    color: white;
    padding: 15px 20px;
    margin: -20px -20px 20px -20px; /* Alinha com as bordas do card */
    border-radius: 8px 8px 0 0;
    font-size: 1.2em;
    font-weight: bold;
}

/* Ícones do Dashboard (Exemplo - usar Font Awesome ou similar) */
.icon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    text-align: center;
    padding: 20px 0;
}

.icon-item {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.icon-item img { /* Usar imagens SVG ou ícones de fonte */
    width: 60px;
    height: 60px;
    margin-bottom: 10px;
}

.icon-item a {
    text-decoration: none;
    color: var(--cor-primaria);
    font-weight: bold;
}

/* Tabelas */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table th, table td {
    border: 1px solid var(--cor-borda);
    padding: 10px;
    text-align: left;
}

table th {
    background-color: var(--cor-secundaria);
    color: white;
}

table tr:nth-child(even) {
    background-color: #f2f2f2;
}

/* Responsividade básica */
@media (max-width: 768px) {
    .navbar a {
        display: block;
        margin: 5px 0;
    }
    .icon-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
}