/* ==========================================================================
   NoteSage Articles & Publications Stylesheet (articles_styles.css)
   Exact Parity with Sketchy Blog (https://www.sketchy.com/blog) Layout
   ========================================================================== */

/* --- Base Body & Typography --- */
.article-page-body {
    background-color: var(--cream-light, #F8F9FA);
    color: var(--dark, #2B2D42);
    font-family: 'DM Sans', 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* --- Sketchy Blog Header Banner --- */
.blog-hero-banner {
    background: linear-gradient(135deg, var(--cream, #FDF7F2) 0%, #e8f4f8 60%, #d4eef7 100%);
    padding: 130px 0 45px;
    position: relative;
    border-bottom: 1px solid rgba(17, 138, 178, 0.1);
}

.blog-hero-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(17,138,178,0.12) 1px, transparent 1px);
    background-size: 32px 32px;
    z-index: 0;
}

.blog-hero-banner .container {
    position: relative;
    z-index: 1;
}

.blog-hero-title {
    font-family: 'DM Sans', 'Inter', system-ui, sans-serif;
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--dark, #2B2D42);
    line-height: 1.2;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.blog-hero-subtitle {
    font-size: 1.15rem;
    color: var(--body-text, #4a5568);
    max-width: 780px;
    margin-bottom: 28px;
    line-height: 1.65;
}

/* --- Category Filter Pills Bar (Sketchy Blog Style) --- */
.blog-filters-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(17, 138, 178, 0.12);
}

.filter-btn {
    background: var(--white, #ffffff);
    color: var(--dark-mid, #444660);
    border: 1px solid rgba(17, 138, 178, 0.18);
    font-size: 0.88rem;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.25s ease;
    font-family: inherit;
}

.filter-btn:hover {
    background: rgba(17, 138, 178, 0.08);
    color: var(--primary, #118AB2);
    border-color: var(--primary, #118AB2);
}

.filter-btn.active {
    background: var(--primary, #118AB2);
    color: #ffffff;
    border-color: var(--primary, #118AB2);
    box-shadow: 0 4px 12px rgba(17, 138, 178, 0.25);
}


/* --- Featured Article Section (Sketchy Blog Featured Card) --- */
.featured-article-section {
    padding: 50px 0 30px;
}

.featured-article-card {
    background: var(--white, #ffffff);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(43, 45, 66, 0.06);
    border: 1px solid rgba(43, 45, 66, 0.08);
    display: grid;
    grid-template-columns: 460px 1fr;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
    cursor: pointer;
}

.featured-article-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(43, 45, 66, 0.12);
    border-color: rgba(17, 138, 178, 0.3);
}

.featured-card-image-wrap {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 380px;
    overflow: hidden;
    background-color: var(--sage, #A8DADC);
}

.featured-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.5s ease;
}

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

.featured-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(17, 138, 178, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #ffffff;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 6px 16px;
    border-radius: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.featured-card-content {
    padding: 36px 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.featured-card-title {
    font-family: 'DM Sans', 'Inter', system-ui, sans-serif;
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--dark, #2B2D42);
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
    transition: color 0.2s ease;
}

.featured-article-card:hover .featured-card-title {
    color: var(--primary, #118AB2);
}

.featured-card-synopsis {
    font-size: 0.98rem;
    color: var(--body-text, #4a5568);
    line-height: 1.65;
    margin-bottom: 24px;
}

.featured-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid rgba(43, 45, 66, 0.08);
    font-size: 0.9rem;
    color: var(--muted, #64748b);
}

.featured-author {
    font-weight: 600;
    color: var(--dark-mid, #444660);
}

.featured-author i {
    color: var(--primary, #118AB2);
    margin-right: 6px;
}

.featured-card-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent, #EF476F) 0%, var(--accent-light, #F77F00) 50%, var(--accent-dark, #c9304f) 100%) !important;
    color: #ffffff !important;
    padding: 11px 24px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 4px 14px rgba(239, 71, 111, 0.35);
    transition: all 0.25s ease;
    border: none;
}

.featured-article-card:hover .featured-card-btn {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 71, 111, 0.45);
}


/* --- Articles Grid Section (Sketchy Blog Grid) --- */
.articles-section {
    padding: 40px 0 90px;
    background-color: var(--cream-light, #F8F9FA);
}

.section-subtitle-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(17, 138, 178, 0.1);
}

.section-subtitle-bar h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark, #2B2D42);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.article-card {
    background: var(--white, #ffffff);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(43,45,66,0.06);
    border: 1px solid rgba(17, 138, 178, 0.12);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.article-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(43,45,66,0.12);
    border-color: var(--primary, #118AB2);
}

.article-card-image-wrap {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background-color: var(--sage, #A8DADC);
}

.article-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.article-card:hover .article-card-image {
    transform: scale(1.04);
}

.article-category-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(17, 138, 178, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 5px 12px;
    border-radius: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.article-card-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-card-title {
    font-family: 'DM Sans', 'Inter', system-ui, sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark, #2B2D42);
    line-height: 1.35;
    margin-bottom: 12px;
    transition: color 0.2s ease;
}

.article-card:hover .article-card-title {
    color: var(--primary, #118AB2);
}

.article-card-synopsis {
    font-size: 0.92rem;
    color: var(--body-text, #4a5568);
    line-height: 1.6;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card-meta {
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid rgba(17, 138, 178, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--muted, #64748b);
}

.article-author-name {
    font-weight: 600;
    color: var(--dark-mid, #444660);
}

.article-author-name i {
    color: var(--primary, #118AB2);
    margin-right: 4px;
}

.article-read-more {
    font-weight: 600;
    color: var(--primary, #118AB2);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s ease;
}

.article-card:hover .article-read-more {
    gap: 10px;
    color: var(--primary-dark, #0A7C8C);
}


/* --- Full Article Reader Page Styles --- */
.article-header-banner {
    background: linear-gradient(135deg, var(--cream, #FDF7F2) 0%, #e8f4f8 60%, #d4eef7 100%);
    color: var(--dark, #2B2D42);
    padding: 130px 0 50px;
    position: relative;
    border-bottom: 1px solid rgba(17, 138, 178, 0.1);
}

.article-header-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(17,138,178,0.12) 1px, transparent 1px);
    background-size: 32px 32px;
    z-index: 0;
}

.article-header-banner .container {
    position: relative;
    z-index: 1;
}

.article-breadcrumbs {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--muted, #64748b);
    margin-bottom: 20px;
}

.article-breadcrumbs a {
    color: var(--primary, #118AB2);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.article-breadcrumbs a:hover {
    color: var(--primary-dark, #0A7C8C);
    text-decoration: underline;
}

.article-breadcrumbs i {
    font-size: 0.7rem;
    color: var(--muted, #64748b);
}

.article-hero-category {
    display: inline-block;
    background: rgba(17, 138, 178, 0.08);
    border: 1px solid rgba(17, 138, 178, 0.2);
    color: var(--primary, #118AB2);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: 20px;
    margin-bottom: 18px;
}

.article-hero-title {
    font-family: 'DM Sans', 'Inter', system-ui, sans-serif;
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.25;
    color: var(--dark, #2B2D42);
    margin-bottom: 16px;
    max-width: 920px;
    letter-spacing: -0.02em;
}

.article-hero-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(17, 138, 178, 0.15);
    font-size: 0.9rem;
    color: var(--dark-mid, #444660);
    font-weight: 500;
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.article-meta-item i {
    color: var(--primary, #118AB2);
}

.article-detail-section {
    padding: 50px 0 90px;
    background-color: var(--white, #ffffff);
}

.article-layout-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 52px;
    align-items: start;
}

.article-featured-image-box {
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 36px;
    box-shadow: 0 6px 24px rgba(43,45,66,0.12);
    border: 1px solid rgba(17, 138, 178, 0.15);
}

.article-featured-image-box img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.article-table-box {
    width: 100%;
    margin: 32px 0 16px 0;
    padding: 20px;
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid rgba(17, 138, 178, 0.18);
    box-shadow: 0 6px 24px rgba(43, 45, 66, 0.08);
    display: flex;
    justify-content: center;
    align-items: center;
}

.article-table-box img {
    width: 100%;
    max-width: 880px;
    height: auto;
    display: block;
    border-radius: 8px;
    object-fit: contain;
    image-rendering: -webkit-optimize-contrast;
}

.article-content-body {
    font-size: 1.08rem;
    color: var(--body-text, #4a5568);
    line-height: 1.8;
}

.article-synopsis-callout {
    background: linear-gradient(135deg, rgba(17,138,178,0.06) 0%, rgba(168,230,207,0.15) 100%);
    border-left: 4px solid var(--primary, #118AB2);
    border-radius: 14px;
    padding: 28px 32px;
    margin-bottom: 36px;
    box-shadow: 0 4px 16px rgba(17, 138, 178, 0.06);
}

.synopsis-title {
    font-family: 'DM Sans', 'Inter', system-ui, sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary, #118AB2);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.synopsis-title i {
    font-size: 1.1rem;
}

.synopsis-text {
    font-size: 1.02rem;
    color: var(--dark, #2B2D42);
    line-height: 1.7;
    margin: 0;
}

.article-content-body h2 {
    font-family: 'DM Sans', 'Inter', system-ui, sans-serif;
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--dark, #2B2D42);
    margin: 44px 0 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(17, 138, 178, 0.15);
    letter-spacing: -0.01em;
}

.article-content-body ul, .article-content-body ol {
    margin-bottom: 28px;
    padding-left: 24px;
}

.article-content-body li {
    margin-bottom: 12px;
    line-height: 1.7;
}

.key-takeaways-card {
    background: linear-gradient(135deg, rgba(17,138,178,0.06) 0%, rgba(138,201,200,0.12) 100%);
    border-left: 4px solid var(--primary, #118AB2);
    border-radius: 12px;
    padding: 28px 32px;
    margin: 28px 0 40px;
}

.key-takeaways-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-dark, #0A7C8C);
    margin-bottom: 16px;
}

.key-takeaways-title i {
    font-size: 1.2rem;
    color: var(--primary, #118AB2);
}

.key-takeaways-list {
    list-style: none;
    padding: 0 !important;
    margin: 0 !important;
}

.key-takeaways-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    font-size: 1rem;
    color: var(--dark, #2B2D42);
    line-height: 1.65;
}

.key-takeaways-list li:last-child {
    margin-bottom: 0;
}

.key-takeaways-list li::before {
    content: "•";
    position: absolute;
    left: 8px;
    top: 0;
    color: var(--primary, #118AB2);
    font-size: 1.3rem;
    font-weight: bold;
}

.article-blockquote {
    border-left: 4px solid var(--primary, #118AB2);
    background: linear-gradient(135deg, rgba(17,138,178,0.05) 0%, rgba(138,201,200,0.08) 100%);
    padding: 24px 28px;
    border-radius: 0 12px 12px 0;
    font-style: italic;
    font-size: 1.1rem;
    color: var(--dark, #2B2D42);
    margin: 32px 0;
}

.article-references-wrapper {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px dashed rgba(17, 138, 178, 0.2);
}

.article-references-wrapper h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary, #118AB2);
    margin-bottom: 24px;
}

.references-list {
    font-size: 0.875rem;
    color: var(--muted, #64748b);
    line-height: 1.65;
    padding-left: 20px;
}

.references-list li {
    margin-bottom: 12px;
    word-break: break-word;
}

.references-list a {
    color: var(--primary, #118AB2);
    text-decoration: none;
}

.references-list a:hover {
    text-decoration: underline;
    color: var(--primary-dark, #0A7C8C);
}

.article-sidebar {
    position: sticky;
    top: 100px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.sidebar-widget {
    background: var(--white, #ffffff);
    border: 1px solid rgba(17, 138, 178, 0.12);
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(43,45,66,0.08);
}

.sidebar-widget-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary, #118AB2);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid rgba(17, 138, 178, 0.1);
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-list li {
    margin-bottom: 6px;
}

.toc-list a {
    color: var(--dark-mid, #444660);
    text-decoration: none;
    font-size: 0.88rem;
    display: block;
    padding: 6px 10px;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-weight: 500;
}

.toc-list a:hover {
    color: var(--primary, #118AB2);
    background: rgba(17, 138, 178, 0.06);
    padding-left: 14px;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .featured-article-card {
        grid-template-columns: 1fr;
    }
    
    .featured-card-image-wrap {
        min-height: 260px;
    }

    .article-layout-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .article-sidebar {
        position: static;
    }

    .blog-hero-title {
        font-size: 2.2rem;
    }
}

@media (max-width: 600px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }

    .blog-hero-banner {
        padding: 100px 0 36px;
    }

    .blog-hero-title {
        font-size: 1.8rem;
    }

    .featured-card-content {
        padding: 24px;
    }
}

/* --- White Paper Card & Modal Dialog --- */
.whitepaper-card-trigger {
    cursor: pointer;
}

.whitepaper-card-trigger:hover .featured-card-image {
    transform: scale(1.04);
}
    background: linear-gradient(135deg, #118AB2 0%, #0A7C8C 50%, #073B4C 100%);
    border-radius: 20px;
    padding: 36px 40px;
    color: #ffffff;
    box-shadow: 0 8px 32px rgba(17, 138, 178, 0.25);
    position: relative;
    overflow: hidden;
    margin-bottom: 10px;
}

.whitepaper-featured-card::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -10%;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.whitepaper-card-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 18px;
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.whitepaper-card-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.whitepaper-title {
    font-family: 'DM Sans', 'Inter', system-ui, sans-serif;
    font-size: 1.85rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 10px;
    line-height: 1.3;
}

.whitepaper-synopsis {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    max-width: 720px;
}

.whitepaper-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #EF476F 0%, #F77F00 100%) !important;
    color: #ffffff !important;
    padding: 14px 28px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.98rem;
    box-shadow: 0 4px 18px rgba(239, 71, 111, 0.4);
    border: none;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.25s ease;
}

.whitepaper-download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(239, 71, 111, 0.55);
}

/* Modal Overlay & Box */
.whitepaper-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.whitepaper-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.whitepaper-modal-card {
    background: #ffffff;
    width: 100%;
    max-width: 500px;
    border-radius: 24px;
    padding: 36px 32px 32px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    position: relative;
    transform: scale(0.92);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.whitepaper-modal-overlay.active .whitepaper-modal-card {
    transform: scale(1);
}

.whitepaper-modal-close {
    position: absolute;
    top: 18px;
    right: 20px;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    font-size: 1.4rem;
    color: #64748b;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.whitepaper-modal-close:hover {
    background: rgba(239, 71, 111, 0.1);
    color: #ef476f;
}

.whitepaper-modal-header {
    text-align: center;
    margin-bottom: 24px;
}

.whitepaper-modal-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(17, 138, 178, 0.12) 0%, rgba(6, 214, 160, 0.12) 100%);
    color: #118AB2;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin: 0 auto 16px;
}

.whitepaper-modal-header h3 {
    font-family: 'DM Sans', 'Inter', system-ui, sans-serif;
    font-size: 1.45rem;
    font-weight: 800;
    color: #2B2D42;
    margin-bottom: 8px;
}

.whitepaper-modal-header p {
    font-size: 0.92rem;
    color: #64748b;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .whitepaper-card-content {
        flex-direction: column;
        align-items: flex-start;
    }
    .whitepaper-download-btn {
        width: 100%;
        justify-content: center;
    }
}