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

:root {
    --primary-gradient: linear-gradient(135deg, #00f2ff 0%, #0066ff 100%);
    --dark-bg: #0a0e1a;
    --card-bg: #141824;
    --text-primary: #ffffff;
    --text-secondary: #a0a8c0;
    --border-color: #1e2535;
    --accent-blue: #00f2ff;
    --accent-purple: #0066ff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 80px 20px 60px;
    position: relative;
}

.logo {
    margin: 0 auto 30px;
}

.logo img {
    border-radius: 24px;
    filter: drop-shadow(0 10px 40px rgba(0, 242, 255, 0.3));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.title {
    font-size: 4rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    letter-spacing: -2px;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-weight: 300;
}

.tagline {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
}

.download-button {
    display: inline-block;
    padding: 16px 48px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-primary);
    background: var(--primary-gradient);
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 242, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.download-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.download-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(0, 242, 255, 0.4);
}

.download-button:hover::before {
    left: 100%;
}

.download-button:active {
    transform: translateY(0px);
}

/* Features Section */
.features {
    padding: 60px 20px;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 30px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: 0 10px 40px rgba(0, 242, 255, 0.1);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* About Section */
.about {
    padding: 60px 20px;
    max-width: 800px;
    margin: 0 auto;
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 40px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    text-align: center;
    line-height: 1.8;
}

/* Privacy Section */
.privacy {
    padding: 60px 20px;
    max-width: 900px;
    margin: 0 auto;
}

.privacy h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 40px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.privacy-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 50px 40px;
}

.privacy-highlight {
    font-size: 1.4rem;
    text-align: center;
    color: var(--accent-blue);
    margin-bottom: 40px;
    padding: 20px;
    background: rgba(0, 242, 255, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(0, 242, 255, 0.3);
}

.privacy-content h3 {
    font-size: 1.5rem;
    margin: 30px 0 15px;
    color: var(--text-primary);
}

.privacy-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.privacy-content ul {
    list-style: none;
    margin: 20px 0;
    padding-left: 0;
}

.privacy-content ul li {
    color: var(--text-secondary);
    padding: 10px 0 10px 30px;
    position: relative;
}

.privacy-content ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: bold;
}

.privacy-date {
    margin-top: 40px;
    text-align: center;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Contact Section */
.contact {
    padding: 60px 20px;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.contact-button {
    display: inline-block;
    padding: 18px 50px;
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 5px 25px rgba(0, 242, 255, 0.3);
}

.contact-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 35px rgba(0, 242, 255, 0.5);
}

/* Footer */
footer {
    text-align: center;
    padding: 60px 20px 40px;
    border-top: 1px solid var(--border-color);
    margin-top: 60px;
}

footer p {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.footer-tagline {
    font-size: 0.95rem;
    font-style: italic;
    color: var(--accent-blue);
}

/* Responsive Design */
@media (max-width: 768px) {
    .title {
        font-size: 3rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .features h2,
    .about h2,
    .privacy h2,
    .contact h2 {
        font-size: 2rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .privacy-content {
        padding: 30px 25px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background: var(--accent-blue);
    color: var(--dark-bg);
}