/* =============================================================
   ARTICLES.CSS — Sally Mills Consulting
   Articles index + individual article page styles
   ============================================================= */

/* ──────────────────────────────────────────
   ARTICLE PAGE — HEADER
   ────────────────────────────────────────── */
.article-header {
  background-color: var(--c-navy);
  position: relative;
  overflow: hidden;
  padding: var(--sp-12) 0 var(--sp-8);
}

/* Banner image — absolutely positioned, low opacity overlay */
.article-header-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.12;
  z-index: 0;
  pointer-events: none;
}

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

.article-header .article-tag {
  color: var(--c-secondary);
  display: block;
  margin-bottom: var(--sp-2);
}

.article-header h1 {
  font-size: clamp(28px, 4vw, 48px);
  color: var(--c-on-dark);
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 800px;
  margin-bottom: var(--sp-4);
}

.article-header p {
  color: var(--c-on-dark);
  margin-bottom: var(--sp-4);
}

/* Author row */
.author-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.author-avatar-placeholder {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--c-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.author-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.author-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-on-dark);
}

.author-date {
  font-size: 12px;
  color: var(--c-on-dark-faint);
}

/* ──────────────────────────────────────────
   ARTICLE PAGE — BODY WRAPPER
   ────────────────────────────────────────── */
.article-page {
  background-color: var(--c-ground);
  padding: var(--sp-8) 0;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-8);
  align-items: start;
}

@media (min-width: 900px) {
  .article-layout {
    grid-template-columns: 220px 1fr;
    gap: var(--sp-8);
  }
}

/* ──────────────────────────────────────────
   TABLE OF CONTENTS
   Mobile: collapsible accordion at top of article
   Desktop: sticky left sidebar
   ────────────────────────────────────────── */
.toc {
  display: block;
  margin-bottom: var(--sp-4);
}

/* Toggle button — visible on mobile only */
.toc-toggle {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: 12px var(--sp-3);
  background-color: rgba(59, 130, 246, 0.05);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  color: var(--c-body);
  cursor: pointer;
  text-align: left;
  transition: background-color var(--duration) var(--ease);
}

.toc-toggle:hover {
  background-color: rgba(59, 130, 246, 0.09);
}

.toc-toggle-icon {
  display: inline-block;
  transition: transform 200ms ease;
  color: var(--c-primary);
  font-size: 18px;
  line-height: 1;
  margin-left: var(--sp-2);
  flex-shrink: 0;
}

.toc-toggle[aria-expanded="true"] .toc-toggle-icon {
  transform: rotate(90deg);
}

/* Heading — visible on desktop only */
.toc-heading {
  display: none;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: var(--sp-2);
}

/* List — collapsed on mobile, always open on desktop */
.toc-list {
  display: none;
  list-style: none;
  padding: var(--sp-1) 0 var(--sp-2);
  flex-direction: column;
  border: 1px solid var(--c-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  background-color: var(--c-surface);
}

.toc-list.is-open {
  display: flex;
}

.toc-list li {
  border-left: none;
  padding-left: var(--sp-2);
}

.toc-list li.toc-h3 {
  padding-left: calc(var(--sp-2) + 12px);
}

.toc-link {
  display: block;
  font-size: 12px;
  color: var(--c-muted);
  line-height: 1.45;
  padding: 5px 0;
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

.toc-link:hover {
  color: var(--c-body);
}

/* Active state — set on the <li> by JS */
.toc-list li.is-active > .toc-link {
  color: var(--c-secondary);
  font-weight: 600;
}

/* Desktop overrides */
@media (min-width: 900px) {
  .toc {
    position: sticky;
    top: 116px;
    max-height: calc(100vh - 160px);
    overflow-y: auto;
    margin-bottom: 0;
  }

  .toc-toggle {
    display: none;
  }

  .toc-heading {
    display: block;
  }

  .toc-list {
    display: flex;
    border: none;
    padding: 0;
    background-color: transparent;
    border-radius: 0;
  }

  .toc-list li {
    border-left: 2px solid var(--c-border);
    padding-left: 0;
  }

  .toc-list li.toc-h3 {
    padding-left: 12px;
    border-left-color: transparent;
  }

  .toc-link {
    padding: 5px 0 5px var(--sp-2);
  }

  .toc-list li.toc-h3 .toc-link {
    padding-left: 0;
  }

  .toc-list li.is-active {
    border-left-color: var(--c-primary);
  }
}

/* ──────────────────────────────────────────
   ARTICLE BODY TYPOGRAPHY
   ────────────────────────────────────────── */
.article-body {
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-body);
  max-width: 720px;
  /* Prevent grid child from overflowing its column */
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

.article-body h2 {
  font-size: clamp(20px, 2.5vw, 26px);
  color: var(--c-navy);
  margin-top: var(--sp-8);
  margin-bottom: var(--sp-3);
  padding-bottom: var(--sp-1);
  border-bottom: 1px solid var(--c-border);
  scroll-margin-top: 120px;
}

.article-body h3 {
  font-size: 18px;
  color: var(--c-navy);
  margin-top: var(--sp-6);
  margin-bottom: var(--sp-2);
  scroll-margin-top: 120px;
}

.article-body h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-navy);
  margin-top: var(--sp-4);
  margin-bottom: var(--sp-1);
  scroll-margin-top: 120px;
}

.article-body p {
  margin-bottom: var(--sp-3);
}

.article-body ul,
.article-body ol {
  list-style: disc;
  padding-left: var(--sp-4);
  margin-bottom: var(--sp-3);
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  margin-bottom: var(--sp-1);
  line-height: 1.7;
}

.article-body a {
  color: var(--c-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: var(--c-tertiary);
}

/* Inline code */
.article-body code {
  background: rgba(59, 130, 246, 0.08);
  color: var(--c-tertiary);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.875em;
}

/* Code blocks */
.article-body pre {
  background-color: var(--c-navy);
  border-radius: var(--radius-md);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--sp-3);
  margin-bottom: var(--sp-4);
  border: 1px solid rgba(255, 255, 255, 0.06);
  /* Constrain to parent — critical on mobile */
  max-width: 100%;
  box-sizing: border-box;
}

.article-body pre code {
  background: transparent;
  color: var(--c-on-dark-dim);
  font-size: 13px;
  padding: 0;
  border-radius: 0;
  line-height: 1.7;
  /* Horizontal scroll inside the pre, not page-level overflow */
  white-space: pre;
  display: block;
  width: max-content;
  min-width: 100%;
}

/* Blockquotes */
.article-body blockquote {
  border-left: 3px solid var(--c-primary);
  padding: var(--sp-2) var(--sp-3);
  margin: var(--sp-4) 0;
  background-color: rgba(59, 130, 246, 0.04);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-body blockquote p {
  margin-bottom: var(--sp-1);
  color: var(--c-body);
  font-size: 16px;
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

/* Tables */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  margin-bottom: var(--sp-4);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.article-body th {
  background-color: rgba(59, 130, 246, 0.06);
  color: var(--c-navy);
  font-weight: 600;
  font-size: 13px;
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--c-border);
}

.article-body td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-body);
  font-size: 14px;
}

.article-body tr:last-child td {
  border-bottom: none;
}

/* Figures + images */
.article-body figure {
  margin: var(--sp-6) 0;
}

.article-body figure img {
  max-width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border);
}

.article-body figcaption {
  font-size: 13px;
  color: var(--c-muted);
  margin-top: var(--sp-1);
  font-style: italic;
}

/* ──────────────────────────────────────────
   VIDEO EMBED
   ────────────────────────────────────────── */
.article-video {
  margin-bottom: var(--sp-6);
}

.video-wrap {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  background-color: var(--c-navy);
  border-radius: var(--radius-md);
}

.video-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-caption {
  font-size: 13px;
  color: var(--c-muted);
  margin-top: var(--sp-2);
  font-style: italic;
}

/* ──────────────────────────────────────────
   RELATED ARTICLES
   ────────────────────────────────────────── */
.related-articles {
  background-color: var(--c-navy);
  padding: var(--sp-8) 0 var(--sp-12);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.related-articles-header {
  margin-bottom: var(--sp-6);
}

.related-articles-header .eyebrow {
  color: var(--c-secondary);
}

.related-articles-header h2 {
  color: var(--c-on-dark);
  font-size: clamp(20px, 2.5vw, 28px);
  margin-top: 6px;
  border-bottom: none;
  padding-bottom: 0;
}

.related-articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .related-articles-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Dark card overrides */
.related-articles-grid .article-card {
  background-color: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
}

.related-articles-grid .article-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.12);
}

.related-articles-grid .article-tag {
  color: var(--c-secondary);
}

.related-articles-grid .article-title {
  color: var(--c-on-dark);
}

.related-articles-grid .article-excerpt {
  color: rgba(232, 237, 245, 0.65);
}

.related-articles-grid .article-date {
  color: rgba(232, 237, 245, 0.35);
}

/* ──────────────────────────────────────────
   CTA SECTION
   Duplicated from home.css so articles pages
   don't need to load home.css
   ────────────────────────────────────────── */
.cta-section {
  background-color: var(--c-navy-deep);
  padding: var(--sp-12) 0;
}

.cta-card {
  background-color: var(--c-secondary);
  border-radius: 16px;
  padding: var(--sp-8);
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 36%;
  height: 100%;
  background-color: var(--c-primary);
  clip-path: polygon(18% 0%, 100% 0%, 100% 100%, 0% 100%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.cta-heading {
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-2);
}

.cta-body {
  font-size: 15px;
  color: var(--c-navy);
  line-height: 1.7;
  margin-bottom: var(--sp-4);
}

.btn-cta-primary {
  background-color: var(--c-navy);
  color: var(--c-on-dark);
}

.btn-cta-primary:hover {
  background-color: var(--c-navy-deep);
  color: var(--c-on-dark);
}

@media (max-width: 767px) {
  .cta-card::before {
    display: none;
  }
}

/* ──────────────────────────────────────────
   ARTICLES INDEX — PAGE HEADER
   ────────────────────────────────────────── */
.articles-index-header {
  background-color: var(--c-navy);
  padding: var(--sp-12) 0 var(--sp-8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.articles-index-header .eyebrow {
  color: var(--c-secondary);
}

.articles-index-header h1 {
  font-size: clamp(36px, 5vw, 56px);
  color: var(--c-on-dark);
  margin-top: 6px;
  margin-bottom: var(--sp-3);
}

.articles-index-lead {
  font-size: 17px;
  color: var(--c-on-dark-dim);
  max-width: 560px;
  line-height: 1.7;
}

/* ──────────────────────────────────────────
   ARTICLES INDEX — GRID
   ────────────────────────────────────────── */
.articles-index-grid {
  background-color: var(--c-navy);
  padding: var(--sp-8) 0 var(--sp-12);
}

.articles-index-grid .grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .articles-index-grid .grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Dark card overrides */
.articles-index-grid .article-card {
  background-color: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
}

.articles-index-grid .article-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.12);
}

.articles-index-grid .article-tag {
  color: var(--c-secondary);
}

.articles-index-grid .article-title {
  color: var(--c-on-dark);
}

.articles-index-grid .article-excerpt {
  color: rgba(232, 237, 245, 0.65);
}

.articles-index-grid .article-date {
  color: rgba(232, 237, 245, 0.35);
}