/**
 * PMN Article - Article All Styles
 *
 * Styles for [article-all] shortcode with:
 * - Masonry Grid Layout
 * - Skeleton Loading Animation
 * - Real-time Search
 * - Infinite Scroll
 *
 * @package PMN_Article
 * @since 2.1.19
 */

/* =====================================================
   CSS Variables
   ===================================================== */
:root {
    /* Primary Colors */
    --pmna-aa-primary: #22c55e;
    --pmna-aa-primary-dark: #16a34a;
    --pmna-aa-primary-light: #4ade80;
    --pmna-aa-primary-rgb: 34, 197, 94;

    /* Text Colors */
    --pmna-aa-text: #1f2937;
    --pmna-aa-text-muted: #6b7280;
    --pmna-aa-text-light: #9ca3af;

    /* Background Colors */
    --pmna-aa-bg: #ffffff;
    --pmna-aa-bg-light: #f8fafc;
    --pmna-aa-bg-hover: #f1f5f9;
    --pmna-aa-bg-card: #ffffff;

    /* Border Colors */
    --pmna-aa-border: #e5e7eb;
    --pmna-aa-border-light: #f3f4f6;

    /* Shadows */
    --pmna-aa-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --pmna-aa-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
    --pmna-aa-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 6px 10px rgba(0, 0, 0, 0.05);
    --pmna-aa-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);

    /* Border Radius */
    --pmna-aa-radius-sm: 8px;
    --pmna-aa-radius-md: 12px;
    --pmna-aa-radius-lg: 16px;
    --pmna-aa-radius-xl: 24px;
    --pmna-aa-radius-full: 9999px;

    /* Transitions */
    --pmna-aa-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --pmna-aa-transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --pmna-aa-transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Fonts */
    --pmna-aa-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans Thai", "Sarabun", sans-serif;

    /* Skeleton Colors */
    --pmna-aa-skeleton-base: #e5e7eb;
    --pmna-aa-skeleton-shine: #f3f4f6;
}

/* =====================================================
   Wrapper
   ===================================================== */
.pmna-article-all-wrapper {
    font-family: var(--pmna-aa-font);
    max-width: 100%;
    margin: 0 auto;
}

/* =====================================================
   Search Bar
   ===================================================== */
.pmna-aa-search-wrapper {
    margin-bottom: 24px;
}

.pmna-aa-search {
    position: relative;
    max-width: 480px;
    margin: 0 auto;
}

.pmna-aa-search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--pmna-aa-text-light);
    pointer-events: none;
    transition: color var(--pmna-aa-transition-fast);
}

.pmna-aa-search-input {
    width: 100%;
    padding: 14px 48px;
    font-size: 16px;
    font-family: var(--pmna-aa-font);
    color: var(--pmna-aa-text);
    background: var(--pmna-aa-bg);
    border: 2px solid var(--pmna-aa-border);
    border-radius: var(--pmna-aa-radius-full);
    outline: none;
    transition: all var(--pmna-aa-transition);
    box-shadow: var(--pmna-aa-shadow-sm);
}

.pmna-aa-search-input::placeholder {
    color: var(--pmna-aa-text-light);
}

.pmna-aa-search-input:hover {
    border-color: var(--pmna-aa-border);
    box-shadow: var(--pmna-aa-shadow-md);
}

.pmna-aa-search-input:focus {
    border-color: var(--pmna-aa-primary);
    box-shadow: 0 0 0 4px rgba(var(--pmna-aa-primary-rgb), 0.15);
}

.pmna-aa-search-input:focus + .pmna-aa-search-icon,
.pmna-aa-search:focus-within .pmna-aa-search-icon {
    color: var(--pmna-aa-primary);
}

.pmna-aa-search-clear {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--pmna-aa-bg-light);
    border: none;
    border-radius: 50%;
    color: var(--pmna-aa-text-muted);
    cursor: pointer;
    transition: all var(--pmna-aa-transition-fast);
}

.pmna-aa-search-clear:hover {
    background: var(--pmna-aa-bg-hover);
    color: var(--pmna-aa-text);
}

/* =====================================================
   Results Count
   ===================================================== */
.pmna-aa-count {
    text-align: center;
    margin-bottom: 32px;
    font-size: 15px;
    color: var(--pmna-aa-text-muted);
}

.pmna-aa-count strong {
    color: var(--pmna-aa-text);
    font-weight: 600;
}

/* =====================================================
   Masonry Grid
   ===================================================== */
.pmna-aa-grid {
    display: grid;
    gap: 24px;
}

/* Column Variants */
.pmna-aa-grid.pmna-aa-columns-1 {
    grid-template-columns: 1fr;
}

.pmna-aa-grid.pmna-aa-columns-2 {
    grid-template-columns: repeat(2, 1fr);
}

.pmna-aa-grid.pmna-aa-columns-3 {
    grid-template-columns: repeat(3, 1fr);
}

.pmna-aa-grid.pmna-aa-columns-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* =====================================================
   Post Card
   ===================================================== */
.pmna-aa-card {
    background: var(--pmna-aa-bg-card);
    border-radius: var(--pmna-aa-radius-lg);
    overflow: hidden;
    box-shadow: var(--pmna-aa-shadow-sm);
    border: 1px solid var(--pmna-aa-border-light);
    transition: all var(--pmna-aa-transition);
}

.pmna-aa-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--pmna-aa-shadow-hover);
    border-color: transparent;
}

.pmna-aa-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

/* Card Image */
.pmna-aa-card-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--pmna-aa-bg-light);
}

.pmna-aa-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--pmna-aa-transition-slow), opacity var(--pmna-aa-transition);
    opacity: 0;
}

.pmna-aa-card-image.loaded img {
    opacity: 1;
}

.pmna-aa-card:hover .pmna-aa-card-image img {
    transform: scale(1.08);
}

/* Image Skeleton Overlay */
.pmna-aa-skeleton-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    transition: opacity var(--pmna-aa-transition);
}

.pmna-aa-card-image.loaded .pmna-aa-skeleton-image-overlay {
    opacity: 0;
    pointer-events: none;
}

/* Placeholder for no image */
.pmna-aa-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--pmna-aa-primary) 0%, var(--pmna-aa-primary-dark) 100%);
    color: rgba(255, 255, 255, 0.5);
}

/* Category Badge */
.pmna-aa-category {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 6px 12px;
    background: var(--pmna-aa-primary);
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 6px;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Card Content */
.pmna-aa-card-content {
    padding: 20px;
}

/* Title */
.pmna-aa-title {
    margin: 0 0 12px;
    font-size: 1.0625rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--pmna-aa-text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--pmna-aa-transition-fast);
}

.pmna-aa-card:hover .pmna-aa-title {
    color: var(--pmna-aa-primary);
}

/* Meta */
.pmna-aa-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pmna-aa-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--pmna-aa-text-light);
}

.pmna-aa-date svg {
    opacity: 0.7;
}

/* =====================================================
   Skeleton Loading
   ===================================================== */
.pmna-aa-skeleton {
    background: linear-gradient(
        90deg,
        var(--pmna-aa-skeleton-base) 0%,
        var(--pmna-aa-skeleton-base) 40%,
        var(--pmna-aa-skeleton-shine) 50%,
        var(--pmna-aa-skeleton-base) 60%,
        var(--pmna-aa-skeleton-base) 100%
    );
    background-size: 200% 100%;
    animation: pmna-aa-shimmer 1.5s ease-in-out infinite;
    border-radius: 4px;
}

@keyframes pmna-aa-shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Skeleton Variants */
.pmna-aa-skeleton-image,
.pmna-aa-skeleton-image-overlay {
    width: 100%;
    height: 100%;
    border-radius: 0;
}

.pmna-aa-skeleton-category {
    width: 60px;
    height: 24px;
    margin-bottom: 12px;
    border-radius: 6px;
}

.pmna-aa-skeleton-title {
    width: 100%;
    height: 20px;
    margin-bottom: 8px;
}

.pmna-aa-skeleton-title-short {
    width: 70%;
    margin-bottom: 16px;
}

.pmna-aa-skeleton-date {
    width: 100px;
    height: 16px;
}

/* Skeleton Card */
.pmna-aa-card-skeleton {
    pointer-events: none;
}

.pmna-aa-card-skeleton .pmna-aa-card-link {
    display: block;
}

.pmna-aa-skeleton-grid {
    margin-top: 24px;
}

/* =====================================================
   Loading Indicator
   ===================================================== */
.pmna-aa-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 48px 24px;
    color: var(--pmna-aa-text-muted);
}

.pmna-aa-loader-spinner svg {
    animation: pmna-aa-spin 1s linear infinite;
    color: var(--pmna-aa-primary);
}

@keyframes pmna-aa-spin {
    to {
        transform: rotate(360deg);
    }
}

.pmna-aa-loader-text {
    font-size: 14px;
    font-weight: 500;
}

/* Hidden Loader */
.pmna-aa-loader.hidden {
    display: none;
}

/* =====================================================
   End Message
   ===================================================== */
.pmna-aa-end {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 32px 24px;
    margin-top: 24px;
    background: var(--pmna-aa-bg-light);
    border-radius: var(--pmna-aa-radius-md);
    color: var(--pmna-aa-text-muted);
    font-size: 14px;
    font-weight: 500;
}

.pmna-aa-end svg {
    color: var(--pmna-aa-primary);
}

/* =====================================================
   No Results / Empty State
   ===================================================== */
.pmna-aa-no-results,
.pmna-aa-empty {
    text-align: center;
    padding: 80px 24px;
    background: var(--pmna-aa-bg-light);
    border-radius: var(--pmna-aa-radius-lg);
    border: 2px dashed var(--pmna-aa-border);
}

.pmna-aa-no-results svg,
.pmna-aa-empty svg {
    color: var(--pmna-aa-text-light);
    margin-bottom: 20px;
}

.pmna-aa-no-results h3,
.pmna-aa-empty h3 {
    margin: 0 0 8px;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--pmna-aa-text);
}

.pmna-aa-no-results p,
.pmna-aa-empty p {
    margin: 0;
    font-size: 14px;
    color: var(--pmna-aa-text-muted);
}

/* =====================================================
   Card Animations
   ===================================================== */
.pmna-aa-card[data-animation] {
    opacity: 0;
    transform: translateY(30px);
}

.pmna-aa-card[data-animation].animated {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

/* Stagger animation delay */
.pmna-aa-card[data-animation].animated:nth-child(3n+1) { transition-delay: 0ms; }
.pmna-aa-card[data-animation].animated:nth-child(3n+2) { transition-delay: 80ms; }
.pmna-aa-card[data-animation].animated:nth-child(3n+3) { transition-delay: 160ms; }

/* =====================================================
   Responsive Design
   ===================================================== */
@media (max-width: 1200px) {
    .pmna-aa-grid.pmna-aa-columns-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .pmna-aa-grid.pmna-aa-columns-3,
    .pmna-aa-grid.pmna-aa-columns-4 {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .pmna-aa-search {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .pmna-aa-grid.pmna-aa-columns-2,
    .pmna-aa-grid.pmna-aa-columns-3,
    .pmna-aa-grid.pmna-aa-columns-4 {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .pmna-aa-search-input {
        padding: 12px 44px;
        font-size: 15px;
    }

    .pmna-aa-search-icon {
        left: 14px;
        width: 18px;
        height: 18px;
    }

    .pmna-aa-card-content {
        padding: 16px;
    }

    .pmna-aa-title {
        font-size: 1rem;
        margin-bottom: 10px;
    }

    .pmna-aa-count {
        margin-bottom: 24px;
    }
}

@media (max-width: 576px) {
    .pmna-aa-grid.pmna-aa-columns-2,
    .pmna-aa-grid.pmna-aa-columns-3,
    .pmna-aa-grid.pmna-aa-columns-4 {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .pmna-aa-search-wrapper {
        margin-bottom: 20px;
    }

    .pmna-aa-search-input {
        padding: 12px 42px;
        font-size: 15px;
    }

    .pmna-aa-count {
        font-size: 14px;
        margin-bottom: 20px;
    }

    .pmna-aa-no-results,
    .pmna-aa-empty {
        padding: 60px 20px;
    }

    .pmna-aa-no-results svg,
    .pmna-aa-empty svg {
        width: 48px;
        height: 48px;
    }

    .pmna-aa-loader {
        padding: 32px 16px;
    }

    .pmna-aa-end {
        padding: 24px 16px;
    }
}

/* =====================================================
   Elementor Compatibility
   ===================================================== */
.elementor .pmna-article-all-wrapper {
    width: 100%;
}

.elementor-section-stretched .pmna-article-all-wrapper {
    margin-left: 0;
    margin-right: 0;
}

/* =====================================================
   Dark Mode Support (Optional)
   ===================================================== */
@media (prefers-color-scheme: dark) {
    .pmna-aa-dark-mode-auto {
        --pmna-aa-text: #f3f4f6;
        --pmna-aa-text-muted: #9ca3af;
        --pmna-aa-text-light: #6b7280;
        --pmna-aa-bg: #1f2937;
        --pmna-aa-bg-light: #374151;
        --pmna-aa-bg-hover: #4b5563;
        --pmna-aa-bg-card: #1f2937;
        --pmna-aa-border: #374151;
        --pmna-aa-border-light: #374151;
        --pmna-aa-skeleton-base: #374151;
        --pmna-aa-skeleton-shine: #4b5563;
    }
}

/* =====================================================
   Print Styles
   ===================================================== */
@media print {
    .pmna-aa-search-wrapper,
    .pmna-aa-loader,
    .pmna-aa-skeleton-grid {
        display: none !important;
    }

    .pmna-aa-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }

    .pmna-aa-grid {
        display: block;
    }

    .pmna-aa-card {
        margin-bottom: 20px;
    }
}