:root {
    --bg-dark: #121212;
    --bg-card: #1E1E2C;
    --neon-blue: #00C8FF;
    --neon-pink: #FF0080;
    --text-main: #ffffff;
    --text-muted: #rgba(255, 255, 255, 0.7);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.background-glow {
    position: fixed;
    top: -20%;
    left: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(0, 200, 255, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
    z-index: -1;
    pointer-events: none;
}

header {
    padding: 2rem;
    display: flex;
    justify-content: center;
    position: relative;
    /* Essential for absolute positioning of children */
}

.lang-switch {
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    color: white;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    z-index: 10;
}

.lang-switch:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--neon-blue);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.app-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(0, 200, 255, 0.3);
}

.app-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    text-align: center;
}

.hero {
    margin-bottom: 4rem;
    max-width: 600px;
    animation: fadeIn 1s ease-out;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.gradient-text {
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
    box-shadow: 0 4px 20px rgba(0, 200, 255, 0.4);
    transition: transform 0.2s, box-shadow 0.2s;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 200, 255, 0.6);
}

.version-info {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    width: 100%;
    max-width: 1000px;
}

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 200, 255, 0.3);
}

.icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

h3 {
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
}

footer {
    padding: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.9rem;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 600px) {
    h1 {
        font-size: 2.5rem;
    }

    .hero {
        margin-bottom: 3rem;
    }
}