:root {
    --bg-color: #000000;
    --accent-color: #00BFFF;
    --text-primary: #FFFFFF;
    --text-secondary: #888888;
    --card-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 10%;
    position: fixed;
    width: 100%;
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 900;
    letter-spacing: 4px;
}

.nav-logo {
    width: 32px;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: 0.3s;
}

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

.download-btn {
    background: var(--text-primary);
    color: var(--bg-color) !important;
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
}

/* Hero Section */
header {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10%;
    background: radial-gradient(circle at 80% 20%, #001a33 0%, #000000 50%);
}

.hero-content h1 {
    font-size: 5rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 2rem;
}

.accent {
    color: var(--accent-color);
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 3rem;
}

.cta-group {
    display: flex;
    gap: 1.5rem;
}

.primary-btn {
    background: var(--accent-color);
    color: black;
    padding: 1rem 2.5rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 900;
    transition: 0.3s;
}

.secondary-btn {
    border: 1px solid var(--glass-border);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 12px;
    text-decoration: none;
    transition: 0.3s;
}

.hero-logo {
    width: 300px;
    filter: drop-shadow(0 0 50px rgba(0, 191, 255, 0.3));
}

/* Features */
.features {
    padding: 10rem 10%;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    letter-spacing: 5px;
    margin-bottom: 5rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    transition: 0.3s;
}

.feature-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Privacy Section */
.privacy-section {
    padding: 5rem 10%;
}

.privacy-card {
    background: #0a0a0a;
    padding: 4rem;
    border-radius: 32px;
    border: 1px solid var(--glass-border);
}

.privacy-card h2 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.last-updated {
    color: var(--accent-color);
    margin-bottom: 3rem;
    font-size: 0.9rem;
    font-weight: 700;
}

.privacy-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.privacy-content p, .privacy-content li {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.privacy-content ul {
    list-style: none;
    margin-left: 0;
}

.privacy-content li::before {
    content: "→ ";
    color: var(--accent-color);
}

/* Footer */
footer {
    padding: 5rem 10%;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
}

/* Animations */
.floating {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

@media (max-width: 768px) {
    header {
        flex-direction: column-reverse;
        justify-content: center;
        text-align: center;
        padding-top: 100px;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .hero-logo {
        width: 150px;
        margin-bottom: 2rem;
    }
    
    .cta-group {
        justify-content: center;
    }
}