/* ==========================================================================
   Blog Styles - Review Agent
   ========================================================================== */

/* --------------------------------------------------------------------------
   Variables
   -------------------------------------------------------------------------- */
:root {
    --blog-card-radius: 16px;
    --blog-card-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --blog-card-shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.15);
    --blog-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --blog-primary: #3B7A57;
    --blog-primary-dark: #2F6346;
    --blog-gradient: linear-gradient(135deg, #3B7A57 0%, #2F6346 100%);
}

/* --------------------------------------------------------------------------
   Blog Layout
   -------------------------------------------------------------------------- */
.blog-main-content {
    background-color: #f8fafc;
    min-height: 60vh;
}

.blog-header {
    padding: 1rem 0 2rem;
}

.blog-header h1 {
    color: #1e293b;
    letter-spacing: -0.02em;
}

.blog-header .lead {
    font-size: 1.125rem;
    line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Featured Card
   -------------------------------------------------------------------------- */
.featured-card-container {
    max-width: 100%;
}

.featured-card {
    position: relative;
    border-radius: var(--blog-card-radius);
    overflow: hidden;
    background: #fff;
    box-shadow: var(--blog-card-shadow);
    transition: transform var(--blog-transition), box-shadow var(--blog-transition);
}

.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--blog-card-shadow-hover);
}

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

.featured-card-image {
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
}

.featured-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--blog-transition);
}

.featured-card:hover .featured-card-image img {
    transform: scale(1.03);
}

.featured-card-image--gradient {
    background: var(--blog-gradient);
}

.featured-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 60%, transparent 100%);
}

.featured-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    color: #fff;
}

.featured-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 0.75rem;
    font-size: 0.8125rem;
    opacity: 0.9;
}

.featured-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.featured-card-meta i {
    font-size: 0.875rem;
}

.featured-card-title {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.3;
    margin: 0 0 0.75rem;
    color: #fff;
}

.featured-card-excerpt {
    font-size: 1rem;
    line-height: 1.6;
    margin: 0 0 1rem;
    opacity: 0.9;
    max-width: 600px;
}

.featured-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.9375rem;
    color: #fff;
    transition: gap var(--blog-transition);
}

.featured-card:hover .featured-card-cta {
    gap: 0.75rem;
}

/* Large screens: side-by-side layout */
@media (min-width: 768px) {
    .featured-card-image {
        height: 400px;
    }

    .featured-card-title {
        font-size: 2.25rem;
    }

    .featured-card-content {
        padding: 2.5rem;
    }
}

/* --------------------------------------------------------------------------
   Regular Blog Cards
   -------------------------------------------------------------------------- */
.blog-card {
    background: #fff;
    border-radius: var(--blog-card-radius);
    overflow: hidden;
    box-shadow: var(--blog-card-shadow);
    transition: transform var(--blog-transition), box-shadow var(--blog-transition);
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--blog-card-shadow-hover);
}

.blog-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: inherit;
}

.blog-card-link:hover,
.blog-card-link:focus {
    color: inherit;
}

.blog-card-link:focus-visible {
    outline: 3px solid rgba(102, 126, 234, 0.5);
    outline-offset: 2px;
    border-radius: var(--blog-card-radius);
}

.blog-card-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #f1f5f9;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--blog-transition);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-image--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #e2e8f0 0%, #f1f5f9 100%);
}

.blog-card-image--placeholder i {
    font-size: 3rem;
    color: #94a3b8;
}

.blog-card-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1.25rem;
}

.blog-card-title {
    font-size: 1.0625rem;
    font-weight: 600;
    line-height: 1.4;
    margin: 0 0 0.75rem;
    color: #1e293b;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.blog-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.8125rem;
    color: #64748b;
}

.blog-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.blog-card-meta i {
    font-size: 0.75rem;
}

.blog-card-excerpt {
    font-size: 0.875rem;
    line-height: 1.6;
    color: #64748b;
    margin: 0 0 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-cta {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--blog-primary);
    transition: gap var(--blog-transition);
}

.blog-card:hover .blog-card-cta {
    gap: 0.625rem;
}

.blog-card-cta i {
    font-size: 0.75rem;
    transition: transform var(--blog-transition);
}

.blog-card:hover .blog-card-cta i {
    transform: translateX(2px);
}

/* --------------------------------------------------------------------------
   Section Headers
   -------------------------------------------------------------------------- */
.featured-post-section .badge {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.375rem 0.75rem;
}

.regular-posts-section h2 {
    color: #1e293b;
}

/* --------------------------------------------------------------------------
   Blog Content (Article Body)
   -------------------------------------------------------------------------- */
.blog-content-bs {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: #334155;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.blog-content-bs > h1:first-child {
    display: none;
}

.blog-content-bs h1,
.blog-content-bs h2,
.blog-content-bs h3,
.blog-content-bs h4,
.blog-content-bs h5,
.blog-content-bs h6 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.4;
    color: #1e293b;
}

.blog-content-bs h1 { font-size: 2.25rem; }
.blog-content-bs h2 {
    font-size: 1.75rem;
    margin-top: 3rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #e2e8f0;
}
.blog-content-bs h3 { font-size: 1.5rem; }
.blog-content-bs h4 { font-size: 1.25rem; }

.blog-content-bs p {
    margin-bottom: 1.5rem;
}

.blog-content-bs a {
    color: var(--blog-primary);
    text-decoration: none;
    border-bottom: 2px solid rgba(102, 126, 234, 0.3);
    transition: border-color var(--blog-transition), color var(--blog-transition);
}

.blog-content-bs a:hover {
    color: var(--blog-primary-dark);
    border-bottom-color: rgba(102, 126, 234, 0.7);
}

.blog-content-bs ul,
.blog-content-bs ol {
    margin-bottom: 1.5rem;
    padding-left: 1.75rem;
}

.blog-content-bs li {
    margin-bottom: 0.5rem;
}

.blog-content-bs pre {
    background-color: #1e293b;
    color: #e2e8f0;
    border-radius: 0.5rem;
    padding: 1.25rem;
    overflow-x: auto;
    margin-bottom: 1.5rem;
    font-family: 'SF Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.875rem;
    line-height: 1.7;
    box-shadow: var(--blog-card-shadow);
}

.blog-content-bs code {
    font-family: 'SF Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.875em;
    color: #e879f9;
    background-color: #fdf4ff;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
}

.blog-content-bs pre code {
    color: inherit;
    background-color: transparent;
    padding: 0;
    border-radius: 0;
}

.blog-content-bs blockquote {
    margin: 2rem 0;
    padding: 1.25rem 1.5rem;
    border-left: 4px solid var(--blog-primary);
    background-color: #f8fafc;
    border-radius: 0 0.5rem 0.5rem 0;
}

.blog-content-bs blockquote p {
    margin-bottom: 0;
    font-size: 1.0625rem;
    color: #475569;
}

.blog-content-bs table {
    width: 100%;
    margin-bottom: 1.5rem;
    border-collapse: collapse;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: var(--blog-card-shadow);
}

.blog-content-bs th,
.blog-content-bs td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.blog-content-bs thead th {
    background-color: #f8fafc;
    font-weight: 600;
    color: #1e293b;
}

.blog-content-bs tbody tr:hover {
    background-color: #f8fafc;
}

.blog-content-bs hr {
    margin: 3rem 0;
    border: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, #e2e8f0, transparent);
}

.blog-content-bs img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    box-shadow: var(--blog-card-shadow);
    margin: 1.5rem 0;
}

/* --------------------------------------------------------------------------
   Blog Navigation
   -------------------------------------------------------------------------- */
.blog-nav-buttons {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.btn-blog-nav {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.btn-blog-nav--home {
    background-color: #f8fafc;
    color: #475569;
    border-color: #e2e8f0;
}

.btn-blog-nav--home:hover {
    background-color: #f1f5f9;
    color: #1e293b;
    transform: translateY(-1px);
}

.btn-blog-nav--blog {
    background: var(--blog-gradient);
    color: #fff;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.btn-blog-nav--blog:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* --------------------------------------------------------------------------
   Copy Link Button
   -------------------------------------------------------------------------- */
.copy-link-button {
    color: #475569;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.copy-link-button:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
}

.copy-link-button--small {
    width: 28px;
    height: 28px;
    font-size: 0.875rem;
}

.copy-feedback {
    display: none;
    color: #16a34a;
}

/* --------------------------------------------------------------------------
   Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 767.98px) {
    .featured-card-image {
        height: 240px;
    }

    .featured-card-content {
        padding: 1.5rem;
    }

    .featured-card-title {
        font-size: 1.375rem;
    }

    .featured-card-excerpt {
        display: none;
    }

    .blog-card-body {
        padding: 1rem;
    }

    .blog-header h1 {
        font-size: 2rem;
    }
}

/* --------------------------------------------------------------------------
   Legacy Support (glass-card)
   -------------------------------------------------------------------------- */
.glass-card {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: var(--blog-card-shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--blog-card-radius);
    cursor: pointer;
    transition: transform var(--blog-transition), box-shadow var(--blog-transition);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--blog-card-shadow-hover);
}

/* --------------------------------------------------------------------------
   Performance Optimizations
   -------------------------------------------------------------------------- */

/* Lazy loading fade-in animation */
.lazy-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.lazy-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation for grid items */
.regular-posts-section .col:nth-child(1) .lazy-card { transition-delay: 0s; }
.regular-posts-section .col:nth-child(2) .lazy-card { transition-delay: 0.1s; }
.regular-posts-section .col:nth-child(3) .lazy-card { transition-delay: 0.2s; }
.regular-posts-section .col:nth-child(4) .lazy-card { transition-delay: 0.1s; }
.regular-posts-section .col:nth-child(5) .lazy-card { transition-delay: 0.2s; }
.regular-posts-section .col:nth-child(6) .lazy-card { transition-delay: 0.3s; }

/* Image loading skeleton */
.blog-card-image.is-loading,
.featured-card-image.is-loading {
    background: linear-gradient(
        90deg,
        #f1f5f9 0%,
        #e2e8f0 50%,
        #f1f5f9 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

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

.blog-card-image.is-loading img,
.featured-card-image.is-loading img {
    opacity: 0;
}

.blog-card-image.is-loaded img,
.featured-card-image.is-loaded img {
    opacity: 1;
    transition: opacity 0.3s ease-out;
}

/* Content-visibility for off-screen optimization */
.regular-posts-section .col:nth-child(n+4) {
    content-visibility: auto;
    contain-intrinsic-size: auto 400px;
}

/* GPU acceleration hints for animated elements */
.blog-card,
.featured-card {
    will-change: transform;
    contain: layout style;
}

/* Remove will-change after animation to free resources */
.blog-card.is-visible,
.featured-card.is-visible {
    will-change: auto;
}

/* Reduced motion support */
.reduce-motion .lazy-card,
.reduce-motion .blog-card,
.reduce-motion .featured-card {
    transition: none !important;
    animation: none !important;
}

.reduce-motion .lazy-card {
    opacity: 1;
    transform: none;
}

.reduce-motion .blog-card-image.is-loading {
    animation: none;
    background: #f1f5f9;
}

/* Optimize image rendering */
.blog-card-image img,
.featured-card-image img {
    image-rendering: -webkit-optimize-contrast;
    -webkit-font-smoothing: antialiased;
}

/* Prevent layout shift */
.blog-card-image {
    min-height: 180px;
}

.featured-card-image {
    min-height: 240px;
}

/* --------------------------------------------------------------------------
   Blog Summary Box (Article Intro)
   -------------------------------------------------------------------------- */
.blog-summary-box {
    position: relative;
    margin: 1.5rem 0 1.75rem;
    padding: 1.25rem 1.5rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 12px;
    border-left: 4px solid var(--blog-primary);
    font-size: 1.0625rem;
    line-height: 1.7;
    color: #475569;
}

.blog-summary-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 12px;
    border: 1px solid rgba(59, 122, 87, 0.15);
    pointer-events: none;
}

.blog-summary-box p {
    margin: 0;
}

@media (max-width: 767.98px) {
    .blog-summary-box {
        padding: 1rem 1.25rem;
        font-size: 1rem;
    }
}