@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

:root {
    --primary-color: #4CAF50; /* Verde */
    --secondary-color: #FFC107; /* Âmbar */
    --background-color: #121212; /* Fundo escuro */
    --surface-color: #1E1E1E; /* Cor da superfície */
    --text-color: #E0E0E0; /* Cor do texto */
    --text-color-dark: #FFFFFF;
    --font-family: 'Roboto', sans-serif;
}

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

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

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: var(--surface-color);
    padding: 20px 0;
    text-align: center;
    border-bottom: 3px solid var(--primary-color);
}

header .logo {
    width: 100px;
    height: 100px;
    border-radius: 20px;
    margin-bottom: 10px;
}

header h1 {
    color: var(--text-color-dark);
    font-size: 2.5em;
    font-weight: 700;
}

.download-section {
    background-color: var(--surface-color);
    margin: 20px 0;
    padding: 30px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.download-section h2 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 2.2em;
}

.download-section p {
    font-size: 1.1em;
    margin-bottom: 20px;
}

.thumbnail {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin-bottom: 25px;
    border: 3px solid var(--secondary-color);
}

.download-btn {
    display: inline-block;
    background: linear-gradient(45deg, var(--primary-color), #66BB6A);
    color: #fff;
    padding: 20px 40px;
    font-size: 1.8em;
    font-weight: 700;
    text-decoration: none;
    border-radius: 50px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-transform: uppercase;
    box-shadow: 0 5px 20px rgba(76, 175, 80, 0.4);
}

.download-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(76, 175, 80, 0.6);
}

.info-download {
    margin-top: 15px;
    font-size: 0.9em;
    color: #aaa;
}

.content-section {
    background-color: var(--surface-color);
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.content-section h2 {
    color: var(--secondary-color);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
    font-size: 1.8em;
}

.content-section p {
    margin-bottom: 15px;
}

.content-section ul, .content-section ol {
    margin-left: 20px;
    margin-bottom: 15px;
}

.content-section ul li, .content-section ol li {
    margin-bottom: 10px;
}

.content-section ul li::marker {
    color: var(--primary-color);
}

footer {
    background-color: #000;
    color: #777;
    text-align: center;
    padding: 20px 0;
    margin-top: 20px;
    border-top: 1px solid #333;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 2em;
    }
    .download-btn {
        font-size: 1.4em;
        padding: 15px 30px;
    }
    .container {
        padding: 15px;
    }
}