:root {
    --primary-color: #1B4B6B;
    --secondary-color: #0F2D42;
    --accent-color: #4A90E2;
    --text-color: #333;
    --light-text: #fff;
    --background: #f8f9fa;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background: var(--background);
    color: var(--text-color);
    line-height: 1.6;
}

header {
    padding: 20px;
    background: var(--primary-color);
}

.back-link {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.back-link:hover {
    opacity: 0.8;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.hero {
    text-align: center;
    padding: 60px 0;
}

.app-icon {
    width: 120px;
    height: 120px;
    border-radius: 25px;
    margin-bottom: 20px;
}

h1 {
    font-size: 48px;
    font-weight: 600;
    margin: 0;
    color: var(--primary-color);
}

.tagline {
    font-size: 20px;
    color: var(--secondary-color);
    margin-top: 10px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin: 60px 0;
}

.feature {
    text-align: center;
    padding: 30px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
}

.feature h2 {
    color: var(--primary-color);
    font-size: 24px;
    margin-bottom: 15px;
}

.feature p {
    color: var(--text-color);
    margin: 0;
}

.screenshots {
    margin: 60px 0;
}

.screenshot-container {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-top: 40px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.screenshot {
    width: 100%;
    max-width: 280px;
    height: auto;
    border-radius: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    margin: 0 auto;
}

.screenshot:hover {
    transform: scale(1.02);
}

.download {
    text-align: center;
    margin: 60px 0;
}

.download-button {
    display: inline-block;
    background: var(--primary-color);
    color: var(--light-text);
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s ease;
}

.download-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(27, 75, 107, 0.3);
}

.download-note {
    margin-top: 15px;
    color: var(--secondary-color);
}

footer {
    text-align: center;
    padding: 20px;
    background: var(--primary-color);
    color: var(--light-text);
}

.contact {
    text-align: center;
    margin: 30px 0;
    padding: 20px 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(27, 75, 107, 0.15);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.contact h2 {
    color: var(--light-text);
    font-size: 20px;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
    font-weight: 600;
}

.contact-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    position: relative;
    z-index: 1;
}

.contact .name {
    font-size: 16px;
    font-weight: 600;
    color: var(--light-text);
    margin: 0;
    padding: 0;
    background: none;
    border-radius: 0;
    backdrop-filter: none;
    border: none;
    transition: all 0.3s ease;
}

.contact .name:hover {
    background: none;
    transform: none;
}

.contact .email {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 6px 15px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.contact .email::before {
    content: '✉️';
    margin-right: 5px;
    font-size: 12px;
}

.contact .email:hover {
    background: var(--light-text);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    color: var(--primary-color);
}

@media (max-width: 768px) {
    h1 {
        font-size: 36px;
    }
    
    .tagline {
        font-size: 18px;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .screenshot-container {
        grid-template-columns: 1fr;
        max-width: 280px;
    }
    
    .screenshot {
        max-width: 100%;
    }
    
    .contact {
        padding: 30px 20px;
    }
    
    .contact h2 {
        font-size: 24px;
    }
    
    .contact .name {
        font-size: 18px;
    }
    
    .contact .email {
        font-size: 16px;
    }
}