/* ============================================
   LoudStack — Article Detail Page Styling
   ============================================ */

/* Reading Progress Bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--ls-blue) 0%, var(--ls-blue-light) 100%);
    width: 0%;
    z-index: 1001;
    transition: width 0.1s linear;
}

/* Article Hero Header */
.article-hero {
    padding: 60px 0 40px 0;
    background: var(--ls-off-white);
}

.article-hero__container {
    max-width: 840px;
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

.article-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ls-gray-600);
    margin-bottom: 24px;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.article-back-link svg {
    width: 16px;
    height: 16px;
}

.article-back-link:hover {
    color: var(--ls-blue);
    transform: translateX(-4px);
}

.article-hero__meta {
    margin-bottom: 16px;
}

.article-hero__title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--ls-gray-900);
    line-height: 1.18;
    letter-spacing: -0.025em;
    margin-bottom: 20px;
}

.article-hero__intro {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--ls-gray-800);
    line-height: 1.6;
    margin-bottom: 32px;
}

.article-hero__author {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-top: 24px;
    border-top: 1px solid var(--ls-gray-200);
}

.article-hero__avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--ls-blue);
    color: var(--ls-white);
    font-size: 0.9rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-hero__author-details {
    display: flex;
    flex-direction: column;
}

.article-hero__author-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--ls-gray-900);
}

.article-hero__author-role {
    font-size: 0.825rem;
    font-weight: 500;
    color: var(--ls-gray-600);
}

/* Cover Banner */
.article-cover {
    padding: 0 0 60px 0;
    background: var(--ls-off-white);
}

.article-cover__container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

.article-cover__box {
    width: 100%;
    height: 380px;
    border-radius: 20px;
    background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 36px -6px rgba(15, 23, 42, 0.12);
}

.article-cover__box svg {
    width: 80px;
    height: 80px;
    stroke: rgba(255, 255, 255, 0.7);
}

/* Article Layout Grid (TOC + Prose Content) */
.article-layout {
    padding: 20px 0 100px 0;
    background: var(--ls-white);
}

.article-layout__container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--container-pad);
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 64px;
}

/* Sticky Table of Contents */
.article-toc {
    position: sticky;
    top: calc(var(--navbar-height) + 40px);
    height: fit-content;
}

.article-toc__title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ls-gray-900);
    margin-bottom: 16px;
}

.article-toc__nav ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
    border-left: 2px solid var(--ls-gray-200);
}

.toc-link {
    display: block;
    padding-left: 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ls-gray-600);
    line-height: 1.4;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    border-left: 2px solid transparent;
    margin-left: -2px;
}

.toc-link:hover {
    color: var(--ls-gray-900);
}

.toc-link.active {
    color: var(--ls-blue);
    font-weight: 600;
    border-left-color: var(--ls-blue);
}

/* Share Buttons */
.article-share {
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--ls-gray-200);
}

.article-share__label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ls-gray-600);
    margin-bottom: 12px;
}

.article-share__buttons {
    display: flex;
    gap: 10px;
}

.share-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: 1px solid var(--ls-gray-200);
    background: var(--ls-white);
    color: var(--ls-gray-800);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.share-btn svg {
    width: 16px;
    height: 16px;
}

.share-btn:hover {
    background: var(--ls-gray-900);
    color: var(--ls-white);
    border-color: var(--ls-gray-900);
}

/* Prose Typography & Content */
.article-body {
    max-width: 760px;
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--ls-gray-800);
}

.article-section {
    margin-bottom: 56px;
    scroll-margin-top: calc(var(--navbar-height) + 30px);
}

.article-body h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--ls-gray-900);
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    line-height: 1.25;
}

.article-body h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--ls-gray-900);
    margin-bottom: 12px;
}

.article-body p {
    margin-bottom: 20px;
    font-weight: 450;
}

/* Callout box */
.article-callout {
    background: rgba(37, 99, 235, 0.05);
    border-left: 4px solid var(--ls-blue);
    border-radius: 0 12px 12px 0;
    padding: 24px 28px;
    margin: 32px 0;
}

.article-callout__text {
    font-size: 1.2rem;
    color: var(--ls-gray-900);
    margin: 0 !important;
}

/* Article List */
.article-list {
    margin: 20px 0 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.article-list li {
    list-style-type: disc;
    font-weight: 500;
}

/* Blockquote */
.article-quote {
    font-size: 1.3rem;
    font-style: italic;
    font-weight: 600;
    color: var(--ls-gray-900);
    border-left: 3px solid var(--ls-gray-900);
    padding-left: 20px;
    margin: 36px 0;
    line-height: 1.5;
}

/* Industry Cards Grid inside Article */
.article-industry-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 28px 0;
}

.article-industry-card {
    background: var(--ls-off-white);
    border: 1px solid var(--ls-gray-200);
    border-radius: 14px;
    padding: 20px;
}

.article-industry-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.article-industry-card p {
    font-size: 0.9375rem;
    color: var(--ls-gray-600);
    margin: 0;
    line-height: 1.5;
}

/* Tech Stack Items */
.article-tech-stack {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 28px 0;
}

.article-tech-item {
    background: var(--ls-off-white);
    border-left: 3px solid var(--ls-gray-900);
    border-radius: 0 10px 10px 0;
    padding: 16px 20px;
}

.article-tech-item h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--ls-gray-900);
    margin-bottom: 4px;
}

.article-tech-item p {
    font-size: 0.9375rem;
    color: var(--ls-gray-600);
    margin: 0;
}

/* Benefits box */
.article-benefits-box {
    background: var(--ls-off-white);
    border: 1px solid var(--ls-gray-200);
    border-radius: 16px;
    padding: 28px;
    margin: 28px 0;
}

.article-benefits-box ul {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.article-benefits-box li {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ls-gray-900);
}

/* Key Takeaways Box */
.article-takeaways {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    color: var(--ls-white);
    border-radius: 16px;
    padding: 32px;
    margin-top: 40px;
}

.article-takeaways h3 {
    color: var(--ls-white);
    font-size: 1.35rem;
    margin-bottom: 16px;
}

.article-takeaways ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-left: 20px;
}

.article-takeaways li {
    list-style-type: check;
    font-size: 1rem;
    color: var(--ls-gray-200);
}

/* Related Insights Section */
.related-insights {
    padding: 80px 0;
    background: var(--ls-off-white);
    border-top: 1px solid var(--ls-gray-200);
}

.related-insights__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

.related-insights__title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--ls-gray-900);
    margin-bottom: 40px;
}

/* Code blocks & Pre tags in articles */
.article-body pre,
.article-body code {
    max-width: 100%;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Tables in articles */
.article-body table {
    display: block;
    width: 100%;
    overflow-x: auto;
    border-collapse: collapse;
}

/* Callouts & Quotes */
.article-callout,
.article-quote,
.article-takeaways,
.article-benefits-box {
    max-width: 100%;
    box-sizing: border-box;
}

/* Responsive Article Layout */
@media (max-width: 968px) {
    .article-layout__container {
        grid-template-columns: 1fr;
    }

    .article-toc {
        display: none;
    }

    .article-hero__title {
        font-size: clamp(1.85rem, 5vw, 2.5rem);
    }

    .article-industry-grid,
    .article-benefits-box ul {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .article-hero {
        padding: 40px 0 24px 0;
    }

    .article-hero__title {
        font-size: clamp(1.6rem, 6vw, 2rem);
        line-height: 1.25;
    }

    .article-hero__intro {
        font-size: 1.05rem;
    }

    .article-cover__box {
        height: 220px;
        border-radius: 14px;
    }

    .article-callout {
        padding: 16px 20px;
        margin: 24px 0;
    }

    .article-callout__text {
        font-size: 1.05rem;
    }

    .article-quote {
        font-size: 1.1rem;
        margin: 24px 0;
        padding-left: 14px;
    }

    .article-takeaways {
        padding: 24px 20px;
        border-radius: 14px;
    }

    .article-benefits-box {
        padding: 20px 16px;
    }
}