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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 400px;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    text-align: center;
}

.logo {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    margin: 0 auto 20px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 20px;
}

h1 {
    font-size: 28px;
    margin-bottom: 10px;
    color: #2d3748;
    font-weight: 600;
}

.subtitle {
    color: #718096;
    margin-bottom: 30px;
    line-height: 1.5;
}

.app-preview {
    width: 200px;
    height: 400px;
    border-radius: 30px;
    margin: 0 auto 30px;
    position: relative;
    border: 10px solid #2d3748;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    background: #f7fafc;
}

.app-preview-slides {
    display: flex;
    height: 100%;
    width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.app-preview-slides::-webkit-scrollbar {
    display: none;
}

.app-preview-slide {
    flex: 0 0 100%;
    min-width: 100%;
    height: 100%;
    scroll-snap-align: start;
    scroll-snap-stop: always;
}

.app-preview-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    display: block;
    pointer-events: none;
    user-select: none;
}

.app-preview::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    background: #cbd5e0;
    border-radius: 2px;
    z-index: 2;
}

.app-preview-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 30px;
}

.preview-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    z-index: 3;
}

.preview-nav:hover {
    background: white;
    transform: translateY(-50%) scale(1.1);
}

.preview-nav.prev {
    left: 10px;
}

.preview-nav.next {
    right: 10px;
}

.preview-indicator {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
}

.indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
}

.indicator-dot.active {
    background: white;
    transform: scale(1.2);
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px 20px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.ios-btn {
    background: #000;
    color: white;
}

.android-btn {
    background: #3ddc84;
    color: #000;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

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

.btn-icon {
    margin-right: 10px;
    font-size: 20px;
}

.features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin: 30px 0;
}

.feature {
    background: rgba(255, 255, 255, 0.8);
    padding: 15px;
    border-radius: 10px;
    text-align: center;
}

.feature-icon {
    font-size: 24px;
    margin-bottom: 8px;
    color: #667eea;
}

.feature-text {
    font-size: 12px;
    color: #718096;
}

.qr-code {
    margin: 20px auto;
    width: 120px;
    height: 120px;
    background: #f7fafc;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #718096;
    border: 1px solid #e2e8f0;
}

@keyframes slideDown {
    from {
        transform: translateX(-50%) translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 30px 20px;
        margin: 10px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    .app-preview {
        width: 180px;
        height: 360px;
    }
    
    .features {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}