/* Estilos gerais para o site IA Segura */

/* Reset e variáveis */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --gray-light: #f8f9fa;
    --gray-medium: #e9ecef;
    --gray-dark: #6c757d;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --header-height: 80px;
}

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

body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
    padding-top: var(--header-height); /* Espaço para o cabeçalho fixo */
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    margin-bottom: 20px;
    color: var(--primary-color);
}

p {
    margin-bottom: 15px;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-color);
}

ul, ol {
    margin-bottom: 20px;
    padding-left: 20px;
}

li {
    margin-bottom: 10px;
}

img {
    max-width: 100%;
    height: auto;
}

/* Cabeçalho */
#main-header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--header-height);
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    max-height: 50px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin: 0 15px;
    margin-bottom: 0;
}

nav ul li a {
    color: var(--dark-color);
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

nav ul li a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: var(--transition);
}

nav ul li a:hover:after,
nav ul li a.active:after {
    width: 100%;
}

nav ul li a.active {
    color: var(--secondary-color);
}

.mobile-menu-icon {
    display: none;
    cursor: pointer;
    font-size: 24px;
}

/* Botões */
.btn {
    display: inline-block;
    padding: 12px 25px;
    background-color: var(--secondary-color);
    color: #fff;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

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

.btn-secondary {
    background-color: var(--gray-medium);
    color: var(--dark-color);
}

.btn-secondary:hover {
    background-color: var(--gray-dark);
    color: #fff;
}

.btn-success {
    background-color: var(--success-color);
}

.btn-success:hover {
    background-color: #219653;
}

.btn-danger {
    background-color: var(--danger-color);
}

.btn-danger:hover {
    background-color: #c0392b;
}

/* Formulários */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--gray-medium);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.form-check {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
}

.form-check input[type="checkbox"] {
    margin-right: 10px;
    margin-top: 4px;
}

/* Utilitários */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.mt-40 {
    margin-top: 40px;
}

.mb-40 {
    margin-bottom: 40px;
}

/* Responsividade */
@media (max-width: 992px) {
    nav ul {
        display: none;
    }
    
    .mobile-menu-icon {
        display: block;
    }
    
    nav.mobile-active ul {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        padding: 20px;
    }
    
    nav.mobile-active ul li {
        margin: 10px 0;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }
    
    #main-header {
        padding: 10px 0;
        height: 70px;
    }
    
    .logo img {
        max-height: 40px;
    }
    
    .container {
        padding: 0 15px;
    }
    
    h1 {
        font-size: 28px;
    }
    
    h2 {
        font-size: 24px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 10px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    h2 {
        font-size: 20px;
    }
}