/* Mobile-First CSS Optimizations */

/* Base Mobile Optimizations */
* {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Touch Device Optimizations */
@media (hover: none) {
    .download-btn,
    .nav-link,
    .btn,
    .social-icon {
        padding: 12px 20px; /* Larger touch targets */
        min-height: 44px; /* Minimum touch target size */
    }
}

/* Performance Optimizations */
.download-page {
    will-change: transform;
    contain: content;
    content-visibility: auto;
}

/* Lazy Loading Images */
.lazy-image {
    opacity: 0;
    transition: opacity 0.3s ease-in;
}

.lazy-image.loaded {
    opacity: 1;
}

/* Mobile Navigation Optimizations */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.navbar-toggler {
    padding: 12px;
    margin: 8px;
}

/* Mobile Download Buttons */
.download-buttons-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
}

.download-btn {
    width: 100%;
    min-height: 60px;
    margin: 0;
    padding: 12px 20px;
    border-radius: 16px;
    font-size: 16px;
}

/* Mobile Stats Cards */
.download-stats-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
}

.stat-card {
    width: 100%;
    padding: 20px;
    margin: 0;
}

/* Mobile Requirements Box */
.requirements-card {
    padding: 20px;
    margin: 16px;
    border-radius: 20px;
}

.req-box {
    margin-bottom: 16px;
    padding: 16px;
}

/* Mobile Installation Steps */
.step-item {
    padding: 16px;
    margin-bottom: 16px;
    border-radius: 16px;
}

.step-number {
    width: 40px;
    height: 40px;
    font-size: 18px;
}

/* Mobile Footer */
.ultra-footer {
    padding: 32px 16px;
}

.footer-content {
    grid-template-columns: 1fr;
    gap: 24px;
}

/* Mobile Loading States */
.loading-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Mobile Gesture Support */
.swipeable {
    touch-action: pan-y pinch-zoom;
    overscroll-behavior: contain;
}

/* Mobile Scroll Performance */
.smooth-scroll {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* Mobile Image Optimizations */
img {
    max-width: 100%;
    height: auto;
    object-fit: cover;
}

/* Mobile Form Elements */
input, select, textarea {
    font-size: 16px; /* Prevents iOS zoom on focus */
    padding: 12px;
    border-radius: 12px;
    min-height: 44px;
}

/* Mobile Modal/Dialog */
.modal-dialog {
    margin: 16px;
    max-height: calc(100vh - 32px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* Mobile Toast Notifications */
.toast {
    position: fixed;
    bottom: 16px;
    left: 16px;
    right: 16px;
    margin: 0;
    border-radius: 12px;
    padding: 16px;
    z-index: 1050;
}

/* Mobile Pull-to-Refresh */
.pull-to-refresh {
    position: relative;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* Mobile Safe Areas */
@supports (padding: max(0px)) {
    .navbar,
    .footer,
    .modal-dialog {
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
    }
    
    .navbar {
        padding-top: max(16px, env(safe-area-inset-top));
    }
    
    .footer {
        padding-bottom: max(16px, env(safe-area-inset-bottom));
    }
}

/* Mobile Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0a0a0a;
        --text-color: #ffffff;
        --card-bg: rgba(255, 255, 255, 0.05);
    }
}

/* Mobile Print Styles */
@media print {
    .navbar,
    .footer,
    .download-btn,
    .social-icons {
        display: none !important;
    }
}

/* Mobile Performance Classes */
.hardware-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Mobile Animation Optimizations */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}