:root {
    --primary-color: #3CB371;
    --secondary-color: #333;
    --background-color: #f4f4f4;
    --font-color: #333;
    --font-family: 'Roboto', sans-serif;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    background-color: var(--background-color);
    color: var(--font-color);
}

.container {
    width: 80%;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: var(--secondary-color);
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

header h1 {
    margin: 0;
}

nav ul {
    list-style: none;
    padding: 0;
    text-align: center;
}

nav ul li {
    display: inline-block;
    margin: 0 10px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 1.1rem;
}

section {
    margin: 20px 0;
    padding: 20px;
    background: #fff;
    border-radius: 5px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

h2 {
    margin-bottom: 10px;
}

ul {
    list-style-type: none;
}

ul li i {
    margin-right: 10px;
    color: var(--primary-color);
}

footer {
    text-align: center;
    padding: 10px;
    background: var(--secondary-color);
    color: #fff;
}

.download-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #fff;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 10px;
}

.download-btn:hover {
    background-color: #2E8B57;
}

.buttons-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #fff;
    padding: 5px 10px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 10px;
}

.buttons-btn:hover {
    background-color: #2E8B57;
}

.icon {
    color: var(--primary-color);
}

form input, form textarea {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
}

form button {
    background-color: var(--primary-color);
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

form button:hover {
    background-color: #2E8B57;
}

form i {
    margin-right: 5px;
}

.project-item img {
    width: 100%;
    height: auto;
    max-width: 600px;
    transition: transform 0.3s ease;
}

.project-item img:hover {
    transform: scale(1.1); /* Aumenta a imagem em 10% */
}

#lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8); /* Fundo escuro */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

#lightbox img {
    max-width: 90%;
    max-height: 90%;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.4);
}

#backToTop {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 10px 15px;
    font-size: 18px;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    display: none;
    transition: opacity 0.3s ease;
}

button:focus,
a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Responsividade */
@media (max-width: 768px) {
    .container {
        width: 90%;
    }
    
    nav ul li {
        display: block;
        margin: 10px 0;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }

    nav ul li {
        display: block;
        margin: 5px 0;
    }

    section {
        padding: 10px;
    }

    h2 {
        font-size: 1.2rem;
    }

    footer {
        padding: 5px;
        font-size: 0.8rem;
    }
}