/* Import Box-Sizing Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Base Styles */
body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: #121212;
    color: #f0f0f0;
    text-align: center;
}

/* Header */
header {
    background: #1e1e1e;
    color: white;
    padding: 2em 1em;
}

header h1 {
    font-size: 2.5em;
    font-weight: 700;
    margin: 0.2em 0;
}

header p {
    font-size: 1.2em;
    color: #ccc;
    margin: 0;
}

/* Main Content */
main {
    padding: 2em;
}

.screenshot {
    width: 100%;
    max-width: 300px;
    height: auto;
    margin: 1em auto;
    display: block;
    border-radius: 8px;
    /* box-shadow: 0 0 10px rgba(255, 255, 255, 0.1); */
}

/* Features List */
ul {
    list-style: none;
    padding: 0;
    margin: 1.5em 0;
}

li {
    margin: 0.5em 0;
    font-size: 1.1em;
}

/* Button */
.btn {
    display: inline-block;
    margin-top: 1.5em;
    background: #27ae60;
    color: white;
    padding: 0.75em 1.5em;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 700;
    font-size: 1em;
    transition: background 0.2s ease-in-out;
}

.btn:hover {
    background: #219150;
}

/* Footer */
footer {
    margin-top: 3em;
    padding: 1em;
    background: #1e1e1e;
    color: #aaa;
    font-size: 0.9em;
}

/* Responsive Design */
@media (max-width: 600px) {
    header h1 {
        font-size: 2em;
    }

    header p {
        font-size: 1em;
    }

    main {
        padding: 1em;
    }

    ul li {
        font-size: 1em;
    }

    .btn {
        width: 100%;
        font-size: 1.1em;
        padding: 1em;
    }

    .screenshot {
        max-width: 90%;
    }
}