/**
 * @package     DD Helix Template
 * @subpackage  Performance CSS
 * @copyright   Copyright (C) 2024 dd.church. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

/* Performance Optimizations */

/* Critical CSS - Above the fold content */
.hero-section,
.site-header,
.quick-links {
    /* Ensure critical content loads first */
    content-visibility: auto;
    contain-intrinsic-size: 0 400px;
}

/* Lazy loading for images */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* Skeleton loading states */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--dd-radius-md);
}

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

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .skeleton {
        animation: none;
        background: var(--dd-gray-200);
    }
}

/* Optimize font loading */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('fonts/inter-regular.woff2') format('woff2');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('fonts/inter-semibold.woff2') format('woff2');
}

@font-face {
    font-family: 'Crimson Text';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('fonts/crimson-text-regular.woff2') format('woff2');
}

@font-face {
    font-family: 'Crimson Text';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('fonts/crimson-text-semibold.woff2') format('woff2');
}

/* Optimize layout shifts */
.video-wrapper {
    aspect-ratio: 16/9;
    contain: layout;
}

.card-image {
    aspect-ratio: 4/3;
    contain: layout;
}

.business-logo {
    aspect-ratio: 1/1;
    contain: layout;
}

/* Optimize scrolling performance */
.cards-grid,
.directory-grid,
.bulletin-list {
    contain: layout style;
    will-change: transform;
}

/* Optimize animations */
.btn,
.card,
.quick-link {
    will-change: transform;
    backface-visibility: hidden;
    transform: translateZ(0);
}

/* Optimize images */
img {
    max-width: 100%;
    height: auto;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* WebP/AVIF support */
@supports (background-image: url('image.avif')) {
    .hero-background {
        background-image: url('hero.avif');
    }
}

@supports not (background-image: url('image.avif')) {
    @supports (background-image: url('image.webp')) {
        .hero-background {
            background-image: url('hero.webp');
        }
    }
}

/* Optimize print styles */
@media print {
    .site-header,
    .hero-actions,
    .quick-links,
    .cta,
    .modal,
    .btn {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: #000;
        background: #fff;
    }
    
    .card,
    .info-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
    
    a[href^="http"]:after {
        content: " (" attr(href) ")";
        font-size: 10pt;
        color: #666;
    }
}

/* Optimize for high DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero-background {
        background-size: cover;
        image-rendering: -webkit-optimize-contrast;
    }
}

/* Optimize for mobile */
@media (max-width: 768px) {
    /* Reduce animations on mobile */
    .card:hover,
    .quick-link:hover {
        transform: none;
    }
    
    /* Optimize touch targets */
    .btn,
    .tab-button,
    .share-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Optimize scrolling */
    body {
        -webkit-overflow-scrolling: touch;
    }
}

/* Optimize for slow connections */
@media (prefers-reduced-data: reduce) {
    .hero-background {
        background-image: none;
        background-color: var(--dd-primary);
    }
    
    .card-image img,
    .business-logo img {
        display: none;
    }
    
    .skeleton {
        display: none;
    }
}

/* Optimize for high contrast mode */
@media (prefers-contrast: high) {
    .card,
    .info-card,
    .form-card {
        border: 2px solid var(--dd-gray-800);
    }
    
    .btn {
        border: 2px solid currentColor;
    }
    
    .btn-outline-primary {
        border: 2px solid var(--dd-primary);
    }
}

/* Optimize for dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --dd-white: #1a1a1a;
        --dd-black: #ffffff;
        --dd-gray-50: #2d2d2d;
        --dd-gray-100: #404040;
        --dd-gray-200: #525252;
        --dd-gray-300: #737373;
        --dd-gray-400: #a3a3a3;
        --dd-gray-500: #d4d4d4;
        --dd-gray-600: #e5e5e5;
        --dd-gray-700: #f5f5f5;
        --dd-gray-800: #fafafa;
        --dd-gray-900: #ffffff;
    }
    
    .card,
    .info-card,
    .form-card {
        background: var(--dd-gray-100);
        border-color: var(--dd-gray-300);
    }
    
    .hero-background {
        opacity: 0.8;
    }
}

/* Optimize for focus management */
.skip-link:focus {
    position: absolute;
    top: 6px;
    left: 6px;
    z-index: 1001;
}

/* Optimize for screen readers */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Optimize for keyboard navigation */
*:focus {
    outline: 2px solid var(--dd-accent);
    outline-offset: 2px;
}

/* Remove focus outline for mouse users */
.js-focus-visible *:focus:not(.focus-visible) {
    outline: none;
}

/* Optimize for RTL languages */
[dir="rtl"] .hero-actions,
[dir="rtl"] .cta-actions,
[dir="rtl"] .quick-links-grid {
    direction: rtl;
}

/* Optimize for container queries (future-proofing) */
@container (max-width: 400px) {
    .card-content {
        padding: var(--dd-spacing-md);
    }
    
    .card-title {
        font-size: 1.125rem;
    }
}

/* Optimize for viewport units */
.hero-section {
    min-height: 100vh;
    min-height: 100dvh; /* Dynamic viewport height */
}

/* Optimize for content visibility */
.content-hidden {
    content-visibility: hidden;
}

.content-auto {
    content-visibility: auto;
    contain-intrinsic-size: 0 200px;
}

/* Optimize for paint containment */
.paint-contained {
    contain: paint;
}

/* Optimize for layout containment */
.layout-contained {
    contain: layout;
}

/* Optimize for style containment */
.style-contained {
    contain: style;
}

/* Optimize for size containment */
.size-contained {
    contain: size;
}

/* Optimize for strict containment */
.strict-contained {
    contain: strict;
}