/* ==========================================================================
   ARTICLE & TECHNICAL GUIDE SYSTEM (article.css)
   thomascherickal.github.io
   Standardized layout and components for Claude & Gemini Guides,
   Technical Documentation, Articles, and In-Depth Case Studies.
   ========================================================================== */

/* Article Container */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
  box-sizing: border-box;
}

.container-wide {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
  box-sizing: border-box;
}

/* Article Hero Header */
.hero {
  padding: 4.5rem 0 2.5rem;
  text-align: center;
}

.hero-badge {
  font-family: var(--font-mono, monospace);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--claude-accent, #d97757);
  text-transform: uppercase;
  margin-bottom: 0.85rem;
  font-weight: 700;
}

.hero-title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1.15rem;
  background: linear-gradient(135deg, #ffffff 40%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  color: var(--text-muted, #94a3b8);
  max-width: 780px;
  margin: 0 auto 1.75rem;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* Article Content Cards & Steps */
.content-card {
  background: var(--bg-card, #0c111d);
  border: 1px solid var(--border, rgba(56, 189, 248, 0.2));
  border-radius: var(--radius-lg, 14px);
  padding: 2.25rem;
  margin-bottom: 2rem;
  text-align: left;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  box-sizing: border-box;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.content-card:hover {
  border-color: rgba(56, 189, 248, 0.35);
}

.content-card h2 {
  font-size: 1.55rem;
  color: var(--gold, #fbbf24);
  margin-bottom: 1rem;
}

.content-card h3 {
  font-size: 1.25rem;
  color: var(--cyan, #38bdf8);
  margin: 1.5rem 0 0.75rem;
}

.content-card p {
  color: #cbd5e1;
  margin-bottom: 1.15rem;
  font-size: 1rem;
  line-height: 1.7;
}

.content-card li {
  margin-bottom: 0.6rem;
}

.content-card ol,
.content-card ul {
  padding-left: 1.4rem;
  margin: 0.85rem 0 1.25rem;
  line-height: 1.7;
}

.step-card {
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.step-card:hover {
  transform: translateY(-2px);
  border-color: var(--cyan, #38bdf8);
}

/* Table of Contents */
.toc-card {
  background: var(--bg-card, #0c111d);
  border: 1px solid var(--border-gold, rgba(251, 191, 36, 0.35));
  border-radius: var(--radius-lg, 14px);
  padding: 1.75rem 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  box-sizing: border-box;
}

.toc-card h2 {
  color: var(--gold, #fbbf24);
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 1.15rem;
  border-bottom: 1px solid rgba(251, 191, 36, 0.25);
  padding-bottom: 0.5rem;
}

.toc-list {
  margin: 0;
  padding-left: 1.6rem;
}

.toc-list li {
  margin: 0.55rem 0;
  color: var(--gold, #fbbf24);
}

.toc-list li a {
  color: var(--cyan, #38bdf8);
  text-decoration: none;
  font-size: 1.15rem;
  line-height: 1.65;
  transition: color 0.2s ease;
}

.toc-list li a:hover {
  color: var(--gold, #fbbf24);
  text-decoration: underline;
}

.toc-list ol {
  padding-left: 1.4rem;
  font-size: 1.02rem;
  margin-top: 0.35rem;
  margin-bottom: 0.35rem;
}

.toc-list ol li {
  color: var(--text-muted, #94a3b8);
  margin: 0.35rem 0;
}

.toc-list ol li a {
  font-size: 1.02rem;
}

/* Article Body Typography */
.article-body h2 {
  color: var(--gold, #fbbf24);
  font-size: 1.35rem;
  font-weight: 700;
  margin-top: 0.25rem;
  margin-bottom: 1rem;
  line-height: 1.35;
  border-bottom: 1px solid rgba(251, 191, 36, 0.18);
  padding-bottom: 0.5rem;
  scroll-margin-top: 85px;
}

.article-body h3 {
  color: var(--cyan, #38bdf8);
  font-size: 1.12rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.65rem;
  scroll-margin-top: 85px;
}

.article-list {
  margin-left: 1.5rem;
  margin-bottom: 1.35rem;
  line-height: 1.75;
}

.article-list li {
  margin-bottom: 0.65rem;
}

.rule {
  height: 2px;
  border: 0;
  margin: 28px 0;
  border-radius: 2px;
  background: linear-gradient(90deg, #f472b6, #a78bfa, #22d3ee, #34d399, #fbbf24);
}

.date,
.accomplishment-date {
  color: var(--gold, #fbbf24);
  font-weight: 700;
  font-family: var(--font-mono, monospace);
  font-size: 0.9em;
  margin-right: 0.35rem;
}

/* Code Display Windows & Copy Buttons */
.code-window {
  background: #040711;
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
  margin: 1.25rem 0;
}

.code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1.15rem;
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid rgba(56, 189, 248, 0.15);
  font-family: var(--font-mono, monospace);
  font-size: 0.78rem;
  color: var(--text-muted, #94a3b8);
}

.code-pre {
  padding: 1.15rem 1.35rem;
  overflow-x: auto;
  font-family: var(--font-mono, monospace);
  font-size: 0.84rem;
  line-height: 1.65;
  color: #e2e8f0;
  tab-size: 4;
}

code.inline-code {
  font-family: var(--font-mono, monospace);
  font-size: 0.88em;
  color: var(--cyan, #38bdf8);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  padding: 0.15em 0.45em;
  border-radius: 4px;
}

button.copy {
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--cyan, #38bdf8);
  font-family: var(--font-mono, monospace);
  font-size: 0.72rem;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

button.copy:hover {
  background: rgba(56, 189, 248, 0.25);
  color: #ffffff;
}

/* Data Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.9rem;
}

.data-table th,
.data-table td {
  padding: 0.75rem 1rem;
  border: 1px solid rgba(56, 189, 248, 0.2);
  text-align: left;
}

.data-table th {
  background: rgba(15, 23, 42, 0.9);
  color: var(--gold, #fbbf24);
  font-family: var(--font-mono, monospace);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.data-table tr:hover td {
  background: rgba(56, 189, 248, 0.04);
}

.data-table td:first-child {
  font-weight: 600;
  color: #f8fafc;
}

/* Metric Cards & Grids */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.15rem;
  margin: 1.25rem 0;
}

.metric-card {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: 12px;
  padding: 1.35rem 1rem;
  text-align: center;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.metric-card:hover {
  transform: translateY(-2px);
  border-color: var(--cyan, #38bdf8);
}

.metric-val {
  font-family: var(--font-mono, monospace);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--cyan, #38bdf8);
  margin-bottom: 0.35rem;
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-muted, #94a3b8);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* Stats System */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.15rem;
  margin: 1.5rem 0;
}

.stat {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: 12px;
  padding: 1.35rem 1rem;
  text-align: center;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.stat:hover {
  transform: translateY(-2px);
  border-color: var(--cyan, #38bdf8);
}

.stat b,
.stat .big {
  display: block;
  font-family: var(--font-mono, monospace);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--gold, #fbbf24);
  margin-bottom: 0.35rem;
}

.stat span,
.stat .lbl {
  font-size: 0.85rem;
  color: var(--text-muted, #94a3b8);
  line-height: 1.5;
  display: block;
}

/* Quotes & Figures */
blockquote.article-quote {
  margin: 1.5rem 0;
  padding: 1.15rem 1.5rem;
  border-left: 3px solid var(--gold, #fbbf24);
  background: rgba(15, 23, 42, 0.7);
  border-radius: 0 10px 10px 0;
  color: #f1f5f9;
  font-style: italic;
  font-size: 1.02rem;
  line-height: 1.7;
}

blockquote.article-quote cite {
  display: block;
  color: var(--text-muted, #94a3b8);
  font-size: 0.85rem;
  font-style: normal;
  margin-top: 0.65rem;
  font-family: var(--font-mono, monospace);
}

figure.article-figure {
  margin: 1.75rem 0;
  background: #050814;
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: 12px;
  padding: 1.25rem 1rem;
  overflow-x: auto;
}

figure.article-figure svg {
  width: 100%;
  max-width: 680px;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* Case Study Cover Images */
.case-study-cover-wrap {
  width: 100%;
  margin: 1.25rem 0 1.75rem;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  background: #020408;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.6);
}

.case-study-cover-link {
  display: block;
  width: 100%;
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
}

.case-study-cover-img {
  width: 100% !important;
  max-width: 100% !important;
  height: auto !important;
  display: block !important;
  object-fit: cover;
  transition: transform 0.4s ease, filter 0.4s ease;
}

.case-study-cover-link:hover .case-study-cover-img {
  transform: scale(1.02);
  filter: brightness(1.08);
}

/* Technical Callouts */
.callout {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  border-radius: 10px;
  border: 1px solid rgba(56, 189, 248, 0.3);
  background: rgba(15, 23, 42, 0.6);
}

.callout.warn {
  border-color: rgba(251, 191, 36, 0.4);
  background: rgba(251, 191, 36, 0.05);
}

.callout.cost {
  border-color: rgba(52, 211, 153, 0.4);
  background: rgba(52, 211, 153, 0.05);
}

.callout .ctitle {
  font-family: var(--font-mono, monospace);
  font-weight: 700;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gold, #fbbf24);
  margin-bottom: 0.5rem;
}

.note-box {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.feature-box {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(251, 191, 36, 0.25);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

/* References Section */
ol.refs,
.refs-list {
  color: var(--text-muted, #94a3b8);
  font-size: 0.9rem;
  margin-left: 1.4rem;
  line-height: 1.8;
  word-break: break-word;
}

ol.refs li,
.refs-list li {
  margin-bottom: 0.55rem;
}

ol.refs li::marker {
  color: var(--gold, #fbbf24);
  font-family: var(--font-mono, monospace);
  font-weight: 700;
}

ol.refs a,
.ref-link {
  color: var(--cyan, #38bdf8);
  text-decoration: none;
  transition: color 0.2s ease;
  word-break: break-all;
}

ol.refs a:hover,
.ref-link:hover {
  color: var(--gold, #fbbf24);
  text-decoration: underline;
}

ol.refs .ref-url {
  color: var(--cyan, #38bdf8);
  word-break: break-all;
}

ol.refs .ref-meta,
ol.refs .src {
  color: var(--text-muted, #94a3b8);
  font-size: 0.85rem;
}

/* ==========================================================================
   RESPONSIVE DESIGN (article.css)
   ========================================================================== */

@media (max-width: 1024px) {
  .container,
  .container-wide {
    padding: 0 1.25rem 4rem;
  }
}

@media (max-width: 768px) {
  .container,
  .container-wide {
    padding: 0 1rem 3.5rem;
  }

  .content-card {
    padding: 1.5rem 1.25rem;
  }

  .hero {
    padding: 3rem 0 1.75rem;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .hero-desc {
    font-size: 0.98rem;
  }

  .toc-card {
    padding: 1.25rem 1.25rem;
  }

  .toc-list li a {
    font-size: 1rem;
  }

  .metric-grid,
  .stats {
    grid-template-columns: 1fr;
  }

  .code-pre {
    padding: 0.85rem 1rem;
    font-size: 0.78rem;
  }
}

@media (max-width: 480px) {
  .content-card {
    padding: 1.25rem 1rem;
  }

  .content-card h2 {
    font-size: 1.3rem;
  }

  .content-card h3 {
    font-size: 1.1rem;
  }

  .data-table th,
  .data-table td {
    padding: 0.5rem 0.65rem;
    font-size: 0.82rem;
  }
}