/* 🎨 Estilos principais */
:root {
    --primary: #2c3e50;
    --secondary: #3498db;
    --success: #27ae60;
    --danger: #e74c3c;
    --light: #ecf0f1;
    --dark: #2c3e50;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
}

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

h1, h2 {
    color: var(--primary);
}

/* 🖥️ Layout responsivo */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    table {
        display: block;
        overflow-x: auto;
    }
}

/* 🃏 Cards */
.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 20px;
    margin-bottom: 20px;
}

/* 📊 Tabelas */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: var(--primary);
    color: white;
}

tr:hover {
    background-color: #f5f5f5;
}

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

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

input[type="text"],
input[type="number"],
textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

textarea {
    min-height: 100px;
    resize: vertical;
}

button, .btn {
    background-color: var(--secondary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

button:hover, .btn:hover {
    background-color: #2980b9;
}

/* 🚨 Alertas */
.alert {
    padding: 10px 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.erro {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ➕➖ Navegação */
nav {
    margin-top: 20px;
}

.btn {
    margin-right: 10px;
}