:root {
    --primary-bg: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #38bdf8;
    --accent-hover: #0ea5e9;
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: 0.3s ease;
}

/* Glassmorphism utility */
.glass {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 16px;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

header {
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

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

.lang-toggle {
    background: var(--accent);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

/* Hero Section */
.hero {
    height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.5rem;
    color: var(--text-secondary);
    max-width: 600px;
}

/* Apps Grid */
.apps-showcase {
    padding: 4rem 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

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

/* App Introduction Section */
.app-intro {
    padding: 6rem 0;
}

.intro-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.intro-image img {
    width: 240px;
    height: 240px;
    border-radius: 48px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.intro-image img:hover {
    transform: scale(1.05);
}

.intro-content h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--accent);
}

.intro-description {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.intro-features {
    list-style: none;
}

.intro-features li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.intro-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
}

@media (max-width: 968px) {
    .intro-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .intro-image img {
        width: 180px;
        height: 180px;
    }

    .intro-content h2 {
        font-size: 2.5rem;
    }
}

/* Footer & Privacy */
footer {
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid var(--glass-border);
}

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

.privacy-content h2 {
    margin-bottom: 1.5rem;
}

.privacy-section {
    margin-bottom: 2rem;
}

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

    .hero p {
        font-size: 1.2rem;
    }

    .nav-links {
        display: none;
    }
}