:root {
    --bg-color: #111;
    --text-color: #eee;
    --accent-color: #3498db;
    --secondary-text: #aaa;
    --card-bg: #222;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    min-height: 100dvh;
    /* Better for mobile browsers with address bars */
    display: flex;
    flex-direction: column;
}

/* Layout Containers */
.container,
.hero {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    flex: 1;
}

/* Typography */
h1,
h2,
h3 {
    margin-bottom: 0.5em;
    color: #fff;
}

h1 {
    font-size: 2.5em;
    text-align: center;
    margin-top: 20px;
}

h2 {
    font-size: 1.8em;
    margin-top: 1.5em;
    border-bottom: 1px solid #333;
    padding-bottom: 10px;
}

p {
    margin-bottom: 1em;
    color: var(--secondary-text);
}

ul {
    margin-bottom: 1em;
    padding-left: 20px;
    color: var(--secondary-text);
}

li {
    margin-bottom: 0.5em;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #fff;
    text-decoration: underline;
}

/* Landing Page Specifics */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
}

.logo {
    font-size: 4em;
    font-weight: bold;
    margin-bottom: 10px;
    color: #fff;
}

.tagline {
    font-size: 1.5em;
    color: var(--secondary-text);
    margin-bottom: 40px;
}

.cta {
    display: inline-block;
    padding: 15px 40px;
    background: #fff;
    color: #000;
    font-weight: 600;
    border-radius: 30px;
    font-size: 1.2em;
    transition: transform 0.2s, box-shadow 0.2s;
    margin-bottom: 50px;
}

.cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.2);
    text-decoration: none;
    color: #000;
}

.features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.feature {
    text-align: center;
    width: 200px;
}

.feature-icon {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.feature h3 {
    font-size: 1.2em;
    color: #fff;
    margin-bottom: 5px;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid #222;
    margin-top: auto;
}

footer a {
    margin: 0 15px;
    color: var(--secondary-text);
    font-size: 0.9em;
}

/* Mobile Optimization */
@media (max-width: 600px) {
    .logo {
        font-size: 2.5em;
    }

    .tagline {
        font-size: 1.2em;
        margin-bottom: 30px;
    }

    .features {
        flex-direction: column;
        gap: 30px;
        align-items: center;
    }

    .feature {
        width: 100%;
        max-width: 300px;
    }

    .cta {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

    footer {
        display: flex;
        flex-direction: column;
        gap: 15px;
        padding-bottom: 30px;
    }

    footer a {
        display: block;
        padding: 12px;
        margin: 0;
        font-size: 1.1em;
        background: #222;
        /* Card-like background for touch targets */
        border-radius: 8px;
    }
}