:root {
    --bg-color: #0d1117;
    --text-color: #e6edf3;
    --accent-color: #58a6ff;
    --secondary-bg: #161b22;
    --border-color: #30363d;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

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

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

header {
    background: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-color);
    text-decoration: none;
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--accent-color);
}

.hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.hero-title-img {
    max-width: 300px;
    width: 100%;
    height: auto;
    margin-bottom: 1rem;
}

.hero h1 {
    font-size: 3.5rem;
    background: linear-gradient(135deg, #fff 0%, #a5d6ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    color: #8b949e;
    max-width: 600px;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s, background-color 0.2s;
    background-color: var(--secondary-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    background-color: #1f242c;
}

.btn-primary {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #0d1117;
}

.btn-primary:hover {
    background-color: #79c0ff;
    border-color: #79c0ff;
}

.features {
    padding: 4rem 2rem;
    background-color: var(--secondary-bg);
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: border-color 0.2s;
}

.feature-card:hover {
    border-color: var(--accent-color);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.privacy-content {
    max-width: 800px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.privacy-content h1 {
    margin-bottom: 2rem;
    font-size: 2.5rem;
}

.privacy-content h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.privacy-content ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

footer {
    padding: 4rem 2rem;
    text-align: center;
    color: #8b949e;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
}