/* styles.css */
:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --text-light: #fff;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f9f9f9;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header Styles */
header {
    background-color: var(--secondary-color);
    color: var(--text-light);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
    width: 40px;
    border-radius: 50%;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

/* Navigation */
nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

nav a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Banner Section */
.banner {
    background: linear-gradient(rgba(44, 62, 80, 0.8), rgba(44, 62, 80, 0.8)), 
                url('https://images.unsplash.com/photo-1532094349884-543bc11b234d?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    color: var(--text-light);
    text-align: center;
    padding: 8rem 0 4rem;
    margin-top: 60px;
}

.banner h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.banner p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Button Styles */
.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

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

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

/* Main Content */
main {
    padding: 3rem 0;
}

.section {
    margin-bottom: 3rem;
}

.section-title {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--secondary-color);
    font-size: 2rem;
}

/* Cards */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-content {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.card-text {
    margin-bottom: 1.5rem;
    color: #666;
}

/* Estilos para materiais (específicos para primeiro-ano.html) */
.materiais-container {
    max-width: 800px;
    margin: 40px auto;
    padding: 30px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.materiais-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.materiais-lista {
    margin-top: 20px;
}

.materiais-lista h3 {
    color: var(--secondary-color);
    margin: 25px 0 15px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--light-color);
}

.material-item {
    padding: 15px;
    margin-bottom: 10px;
    background-color: var(--light-color);
    border-radius: 5px;
    display: flex;
    align-items: center;
    transition: all 0.3s;
}

.material-item:hover {
    background-color: #e0e5e9;
    transform: translateX(5px);
}

.material-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    margin-left: 10px;
    flex-grow: 1;
}

.material-item a:hover {
    text-decoration: underline;
}

.material-icon {
    color: var(--secondary-color);
    font-size: 1.2rem;
    width: 25px;
    text-align: center;
}

.download-btn {
    background-color: #34495e;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    margin-left: 10px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.download-btn:hover {
    background-color: #2c3e50;
    transform: translateY(-2px);
}

.file-info {
    display: flex;
    align-items: center;
    margin-left: auto;
    gap: 15px;
}

.file-size {
    color: #666;
    font-size: 0.8rem;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--text-light);
    padding: 3rem 0;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-section p, .footer-section ul {
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--light-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--primary-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    nav ul {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--secondary-color);
        flex-direction: column;
        align-items: center;
        padding-top: 2rem;
        transition: left 0.3s;
    }

    nav ul.show {
        left: 0;
    }

    .banner {
        padding: 6rem 0 3rem;
    }

    .banner h1 {
        font-size: 2rem;
    }

    .file-info {
        flex-direction: column;
        gap: 5px;
        align-items: flex-end;
    }
}