/* ============================================================
   UX CASE STUDY — ux-case-study.css
   Konsisten dengan design system portfolio (style.css)
   Dark theme, Inter font, amber/gold accent (#f59e0b)
   ============================================================ */

/* ---------- DESIGN TOKENS (Color tokens managed in theme.css) ---------- */
:root {
  --max-w:    760px;  /* artikel lebih sempit untuk keterbacaan */
  --max-w-lg: 1000px;
  --nav-h:    64px;
  --radius:   14px;
  --radius-sm:10px;

  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ---------- RESET & BASE ---------- */
*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

::selection { background: var(--accent); color: #fff; }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-dark); border-radius: 3px; }

/* ============================================================
   HEADER / NAV BAR
   ============================================================ */
.cs-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  background: var(--bg-nav-scrolled);
  backdrop-filter: blur(20px) saturate(1.3);
  -webkit-backdrop-filter: blur(20px) saturate(1.3);
  border-bottom: 1px solid var(--border);
}

.cs-header-inner {
  max-width: var(--max-w-lg);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cs-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.25s;
  padding: 6px 0;
}

.cs-back-link:hover { color: var(--accent-light); }

.cs-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.logo-bracket { color: var(--accent); }

/* ============================================================
   COVER / HERO
   ============================================================ */
.cs-cover {
  padding: calc(var(--nav-h) + 72px) 24px 80px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.cs-cover-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.cs-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.cs-chip {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 100px;
  background: var(--accent-glow-mid);
  color: var(--accent-light);
  border: 1px solid rgba(245, 158, 11, 0.25);
  letter-spacing: 0.3px;
}

.cs-chip--muted {
  background: rgba(255,255,255,0.04);
  color: var(--text-secondary);
  border-color: var(--border);
}

.cs-cover-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.cs-accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cs-cover-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 640px;
}

.cs-cover-sub em { color: var(--accent-light); font-style: normal; }

/* Meta grid */
.cs-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cs-meta-item {
  padding: 18px 20px;
  background: var(--bg-card-solid);
}

.cs-meta-item dt {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 6px;
}

.cs-meta-item dd {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.45;
}

/* ============================================================
   TABLE OF CONTENTS
   ============================================================ */
.cs-toc {
  border-bottom: 1px solid var(--border);
  background: var(--bg-toc);
  position: sticky;
  top: var(--nav-h);
  z-index: 90;
}

.cs-toc-inner {
  max-width: var(--max-w-lg);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  height: 52px;
  overflow-x: auto;
  scrollbar-width: none;
}

.cs-toc-inner::-webkit-scrollbar { display: none; }

.cs-toc-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.cs-toc-list {
  display: flex;
  gap: 4px;
  list-style: none;
  flex-shrink: 0;
}

.cs-toc-list li { flex-shrink: 0; }

.cs-toc-list a {
  display: inline-block;
  padding: 5px 12px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 100px;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}

.cs-toc-list a:hover {
  color: var(--accent-light);
  background: var(--accent-glow);
}

/* ============================================================
   MAIN ARTICLE LAYOUT
   ============================================================ */
.cs-main {
  padding: 0 24px 100px;
}

.cs-article {
  max-width: var(--max-w);
  margin: 0 auto;
}

/* ============================================================
   SECTIONS
   ============================================================ */
.cs-section {
  padding: 72px 0 0;
  border-top: 1px solid var(--border);
  margin-top: 72px;
}

.cs-section:first-child {
  margin-top: 72px;
  border-top: none;
}

.cs-section-label {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.cs-section-title {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.8px;
  margin-bottom: 24px;
  line-height: 1.25;
}

.cs-sub-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 14px;
  color: var(--text-primary);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.cs-sub-sub-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 24px;
  margin-bottom: 12px;
}

/* Prose paragraphs */
.cs-section p,
.cs-article > p {
  font-size: 0.975rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 16px;
}

.cs-section p strong,
.cs-article p strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Link style */
.cs-link {
  color: var(--accent-light);
  font-weight: 500;
  border-bottom: 1px dashed rgba(245, 158, 11, 0.5);
  transition: border-color 0.2s;
}
.cs-link:hover { border-color: var(--accent-light); }

/* Lists */
.cs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.cs-list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.975rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.cs-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.cs-list li strong { color: var(--text-primary); font-weight: 600; }

.cs-ordered-list {
  list-style: none;
  counter-reset: ol-counter;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.cs-ordered-list li {
  counter-increment: ol-counter;
  position: relative;
  padding-left: 32px;
  font-size: 0.975rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.cs-ordered-list li::before {
  content: counter(ol-counter);
  position: absolute;
  left: 0;
  top: 1px;
  width: 20px;
  height: 20px;
  background: var(--accent-glow-mid);
  border-radius: 50%;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
}

.cs-ordered-list li strong { color: var(--text-primary); font-weight: 600; }

/* ============================================================
   INFO BOXES
   ============================================================ */
.cs-info-box {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 5px 0 5px 16px;
  border-left: 3px solid var(--accent);
  margin-top: 24px;
  margin-bottom: 20px;
}

.cs-info-box p {
  margin-bottom: 0 !important;
  font-size: 0.88rem !important;
  color: var(--text-secondary) !important;
}

.cs-info-box strong { color: var(--text-primary); }

.cs-info-icon {
  width: 16px;
  height: 16px;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 3px;
}

.cs-info-box--placeholder {
  border-left-color: var(--border-hover);
}

.cs-info-box--placeholder .cs-info-icon { color: var(--text-muted); }
.cs-info-box--placeholder strong { color: var(--text-secondary); }

/* ============================================================
   PROCESS HEADER (Design Thinking diagram)
   ============================================================ */
.cs-process-header {
  margin-top: 72px;
  padding: 48px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  margin-left: -24px;
  margin-right: -24px;
  padding-left: 24px;
  padding-right: 24px;
}

.cs-process-header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.cs-process-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 520px;
}

.cs-process-steps {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.cs-step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.cs-step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-glow-mid);
  border: 1.5px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-light);
}

.cs-step-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.cs-step-arrow {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-shrink: 0;
}

/* ============================================================
   FINDINGS GRID (Empathise)
   ============================================================ */
.cs-findings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 16px;
  margin-bottom: 24px;
}

.cs-finding-card {
  padding: 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card-solid);
  transition: border-color 0.25s, transform 0.25s;
}

.cs-finding-card:hover {
  transform: translateY(-2px);
}

.cs-finding-card--issue {
  border-color: rgba(251, 146, 60, 0.2);
  background: rgba(251, 146, 60, 0.04);
}

.cs-finding-card--ok {
  border-color: rgba(52, 211, 153, 0.2);
  background: rgba(52, 211, 153, 0.04);
}

.cs-finding-icon-svg {
  width: 20px;
  height: 20px;
  margin-bottom: 10px;
  color: #fb923c;
  flex-shrink: 0;
}

.cs-finding-icon-svg--ok {
  color: #34d399;
}

.cs-finding-card h5 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.cs-finding-card p {
  font-size: 0.83rem !important;
  color: var(--text-secondary) !important;
  line-height: 1.65 !important;
  margin: 0 !important;
}

/* ============================================================
   PERSONA GRID (Empathise)
   ============================================================ */
.cs-persona-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 16px;
  margin-bottom: 24px;
}

.cs-persona-card {
  padding: 24px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card-solid);
  text-align: center;
  transition: border-color 0.25s, transform 0.25s;
}

.cs-persona-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.cs-persona-avatar {
  font-size: 2rem;
  margin-bottom: 12px;
  line-height: 1;
}

.cs-persona-card h5 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.cs-persona-card p {
  font-size: 0.82rem !important;
  color: var(--text-secondary) !important;
  line-height: 1.65 !important;
  margin: 0 !important;
  text-align: left;
}

/* ============================================================
   PROBLEM STATEMENT (Define)
   ============================================================ */
.cs-problem-statement {
  margin: 24px 0;
  padding: 28px 32px;
  border-left: 3px solid var(--accent);
  background: var(--accent-glow);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.cs-problem-quote {
  font-size: 1.05rem !important;
  font-style: italic;
  color: var(--text-primary) !important;
  line-height: 1.75 !important;
  margin: 0 !important;
}

/* ============================================================
   TABLE (Define)
   ============================================================ */
.cs-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  margin-bottom: 8px;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.cs-table thead {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.cs-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.cs-table td {
  padding: 13px 16px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  line-height: 1.6;
}

.cs-table tbody tr:last-child td { border-bottom: none; }

.cs-table tbody tr {
  background: var(--bg-card-solid);
  transition: background 0.2s;
}

.cs-table tbody tr:hover { background: var(--bg-surface); }

/* Badges */
.cs-badge {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  white-space: nowrap;
}

.cs-badge--high {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.cs-badge--mid {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-light);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.cs-badge--warn {
  background: rgba(251, 146, 60, 0.12);
  color: #fb923c;
  border: 1px solid rgba(251, 146, 60, 0.2);
}

.cs-badge--ok {
  background: rgba(52, 211, 153, 0.1);
  color: #34d399;
  border: 1px solid rgba(52, 211, 153, 0.18);
}

/* ============================================================
   STAT ROW (Empathise / Testing summary)
   ============================================================ */
.cs-stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-top: 24px;
  margin-bottom: 24px;
}

.cs-stat-box {
  padding: 20px 18px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: border-color 0.25s;
}

.cs-stat-box:hover { border-color: var(--border-hover); }

.cs-stat-box--accent {
  border-color: rgba(245, 158, 11, 0.3);
  background: var(--accent-glow);
}

.cs-stat-box--warn {
  border-color: rgba(251, 146, 60, 0.25);
  background: rgba(251, 146, 60, 0.05);
}

.cs-stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 6px;
  font-family: 'JetBrains Mono', monospace;
}

.cs-stat-box--accent .cs-stat-num { color: var(--accent-light); }
.cs-stat-box--warn .cs-stat-num { color: #fb923c; }

.cs-stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.45;
}

/* Scope list */
.cs-scope-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.cs-scope-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: border-color 0.25s;
}

.cs-scope-item:hover { border-color: var(--border-hover); }

.cs-scope-num {
  width: 24px;
  height: 24px;
  background: var(--accent-glow-mid);
  border-radius: 50%;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ============================================================
   PRINCIPLES GRID (Ideate)
   ============================================================ */
.cs-principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 16px;
  margin-bottom: 16px;
}

.cs-principle-card {
  padding: 22px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card-solid);
  transition: border-color 0.25s, transform 0.25s;
}

.cs-principle-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.cs-principle-icon-svg {
  width: 20px;
  height: 20px;
  margin-bottom: 12px;
  color: var(--accent);
  opacity: 0.85;
  flex-shrink: 0;
}

.cs-principle-card h5 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.cs-principle-card p {
  font-size: 0.82rem !important;
  color: var(--text-secondary) !important;
  line-height: 1.65 !important;
  margin: 0 !important;
}

/* ============================================================
   TOOLS ROW (Prototype)
   ============================================================ */
.cs-tools-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
  margin-bottom: 8px;
}

.cs-tool-badge {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 20px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-width: 160px;
  transition: border-color 0.25s;
}

.cs-tool-badge:hover { border-color: var(--border-hover); }

.cs-tool-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
}

.cs-tool-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   MOCKUP GRID (Prototype)
   ============================================================ */
.cs-mockup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
  margin-bottom: 32px;
}

.cs-mockup-item {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card-solid);
  transition: border-color 0.25s, transform 0.25s;
}

.cs-mockup-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.cs-mockup-item--full {
  grid-column: 1 / -1;
}

/* Placeholder frame — wraps img tag */
.cs-mockup-frame {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #edf0f5;
  border-bottom: 1px solid var(--border);
}

.cs-placeholder-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
}

.cs-placeholder-content svg {
  width: 32px;
  height: 32px;
  opacity: 0.4;
}

.cs-placeholder-content span {
  font-size: 0.78rem;
  font-weight: 500;
  opacity: 0.6;
}

/* Real image (or placeholder PNG) */
.cs-mockup-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.cs-mockup-caption {
  padding: 16px 18px;
}

.cs-mockup-caption strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.cs-mockup-caption p {
  font-size: 0.82rem !important;
  color: var(--text-secondary) !important;
  line-height: 1.6 !important;
  margin: 0 !important;
}

/* ============================================================
   LINK CARD (Prototype — Figma link)
   ============================================================ */
.cs-link-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 16px;
  transition: border-color 0.25s;
}

.cs-link-card:hover { border-color: var(--border-hover); }

.cs-link-card-icon {
  width: 24px;
  height: 24px;
  color: var(--accent);
  flex-shrink: 0;
}

.cs-link-card-content {
  flex: 1;
}

.cs-link-card-content strong {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.cs-link-card-content p {
  font-size: 0.83rem !important;
  color: var(--text-secondary) !important;
  margin: 0 !important;
}

.cs-link-card-badge {
  flex-shrink: 0;
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.cs-link-card--anchor {
  color: inherit;
  text-decoration: none;
}

.cs-link-card-content span {
  display: block;
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin-top: 3px;
}

.cs-artifact-frame {
  margin: 20px 0 28px;
  padding: 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.cs-artifact-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius) - 4px);
}

.cs-artifact-caption {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.cs-resource-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 28px;
}

.cs-resource-links a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 14px;
  color: var(--text-primary);
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 0.84rem;
  transition: border-color 0.2s, color 0.2s;
}

.cs-resource-links a:hover {
  color: var(--accent-light);
  border-color: var(--border-hover);
}

/* Evidence and design previews (replace placeholders with thumbnails later) */
.cs-evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 18px 0 32px;
}

.cs-evidence-card {
  overflow: hidden;
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.cs-preview-image-frame {
  position: relative;
  display: grid;
  aspect-ratio: 16 / 9;
  place-items: center;
  overflow: hidden;
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.cs-preview-image-frame--wide {
  aspect-ratio: 120 / 65;
  margin: 20px 0 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.cs-preview-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.cs-preview-image-frame--video .cs-preview-image {
  object-fit: cover;
}

.cs-preview-image-frame .cs-preview-play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  font-size: 1rem;
  box-shadow: 0 2px 16px rgba(0, 0, 0, .32);
}

.cs-folder-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 16px 0 30px;
  padding: 16px 18px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.cs-folder-icon {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  place-items: center;
  color: var(--accent-text);
  background: var(--accent-glow);
  border: 1px solid var(--border-hover);
  border-radius: 10px;
  font-size: 1.1rem;
}

.cs-folder-row > div {
  flex: 1;
}

.cs-folder-row strong {
  color: var(--text-primary);
  font-size: .88rem;
}

.cs-folder-row p {
  margin: 2px 0 0 !important;
  color: var(--text-secondary) !important;
  font-size: .76rem !important;
  line-height: 1.5 !important;
}

.cs-preview-placeholder {
  position: relative;
  display: flex;
  min-height: 150px;
  aspect-ratio: 16 / 9;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  overflow: hidden;
  padding: 18px;
  text-align: center;
  background-color: var(--placeholder-bg);
  background-image: linear-gradient(var(--placeholder-grid) 1px, transparent 1px), linear-gradient(90deg, var(--placeholder-grid) 1px, transparent 1px), radial-gradient(ellipse at center, var(--accent-glow), transparent 68%);
  background-size: 24px 24px, 24px 24px, auto;
  border-bottom: 1px solid var(--border);
}

.cs-preview-placeholder strong {
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.35;
}

.cs-preview-kicker {
  color: var(--accent-light);
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .12em;
}

.cs-preview-note {
  color: var(--text-muted);
  font-size: .75rem;
  line-height: 1.4;
}

.cs-preview-placeholder--wide {
  aspect-ratio: 16 / 6;
  min-height: 170px;
  margin: 20px 0 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.cs-preview-placeholder--video {
  background-image: linear-gradient(var(--placeholder-grid) 1px, transparent 1px), linear-gradient(90deg, var(--placeholder-grid) 1px, transparent 1px), radial-gradient(ellipse at center, rgba(239,68,68,.16), transparent 68%);
  background-size: 24px 24px, 24px 24px, auto;
}

.cs-preview-play {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  padding-left: 2px;
  color: #fff;
  background: #ef4444;
  border-radius: 50%;
  font-size: .8rem;
}

.cs-preview-placeholder--pending {
  background-image: linear-gradient(var(--placeholder-grid) 1px, transparent 1px), linear-gradient(90deg, var(--placeholder-grid) 1px, transparent 1px), radial-gradient(ellipse at center, rgba(148,163,184,.12), transparent 68%);
  background-size: 24px 24px, 24px 24px, auto;
}

.cs-evidence-card-body {
  padding: 16px;
}

.cs-evidence-card-body h4 {
  margin: 0 0 5px;
  color: var(--text-primary);
  font-size: .92rem;
}

.cs-evidence-card-body p {
  min-height: 42px;
  margin: 0 0 14px !important;
  color: var(--text-secondary) !important;
  font-size: .78rem !important;
  line-height: 1.5 !important;
}

.cs-resource-button {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  color: var(--accent-light);
  background: rgba(245,158,11,.08);
  border: 1px solid rgba(245,158,11,.3);
  border-radius: 8px;
  font-size: .78rem;
  font-weight: 700;
  text-decoration: none;
  transition: background .2s, border-color .2s;
}

.cs-resource-button:hover {
  background: rgba(245,158,11,.15);
  border-color: var(--accent);
}

.cs-resource-button--disabled {
  margin-bottom: 28px;
  color: var(--text-muted);
  background: rgba(255,255,255,.03);
  border-color: var(--border);
  cursor: not-allowed;
}

/* ============================================================
   STATUS BANNER (Testing)
   ============================================================ */
.cs-status-banner {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 6px 0 6px 16px;
  border-left: 3px solid var(--accent);
  margin-top: 24px;
  margin-bottom: 32px;
}

.cs-status-banner--neutral {
  border-left-color: var(--accent-light);
}

.cs-status-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.cs-status-icon--neutral {
  color: var(--text-muted);
}

.cs-status-icon svg { width: 16px; height: 16px; }

.cs-status-content strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.cs-status-content p {
  font-size: 0.87rem !important;
  color: var(--text-secondary) !important;
  margin: 0 !important;
  line-height: 1.65 !important;
}

/* ============================================================
   TESTING SECTION DIVIDER (A / B)
   ============================================================ */
.cs-testing-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.cs-testing-divider span {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-glow-mid);
  border: 1.5px solid var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cs-testing-divider--b span {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
  color: var(--text-muted);
}

.cs-testing-divider h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  border: none;
}

/* ============================================================
   TESTING PLAN
   ============================================================ */
.cs-testing-plan {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 16px;
  margin-bottom: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cs-test-method {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 22px 24px;
  background: var(--bg-card-solid);
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
}

.cs-test-method:last-child { border-bottom: none; }
.cs-test-method:hover { background: var(--bg-surface); }

.cs-test-method-num {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  background: var(--accent-glow-mid);
  border-radius: 50%;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.cs-test-method-body h5 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.cs-test-method-body p {
  font-size: 0.87rem !important;
  color: var(--text-secondary) !important;
  line-height: 1.7 !important;
  margin: 0 !important;
}

/* ============================================================
   RECOMMENDATIONS (Outro)
   ============================================================ */
.cs-recommendations {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}

.cs-recommendation-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 22px 24px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.25s, transform 0.25s;
}

.cs-recommendation-item:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.cs-rec-num {
  flex-shrink: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.5;
  min-width: 32px;
  padding-top: 2px;
}

.cs-rec-body h5 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.cs-rec-body p {
  font-size: 0.87rem !important;
  color: var(--text-secondary) !important;
  line-height: 1.7 !important;
  margin: 0 !important;
}

/* ============================================================
   NOTE TEXT (User Flow)
   ============================================================ */
.cs-note-text {
  font-size: 0.82rem !important;
  color: var(--text-muted) !important;
  font-style: italic;
  margin-top: 16px !important;
  margin-bottom: 8px !important;
}

/* ============================================================
   CONCEPTUAL FLOW DIAGRAM (User Flow)
   ============================================================ */
.cs-flow-diagram {
  margin-top: 8px;
  margin-bottom: 24px;
  padding: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow-x: auto;
}

.cs-flow-caption {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 20px !important;
  letter-spacing: 0.3px;
}

.cs-flow-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
  min-width: 480px;
}

.cs-flow-node {
  padding: 8px 16px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  flex-shrink: 0;
}

.cs-flow-node--start {
  border-color: rgba(245, 158, 11, 0.4);
  background: var(--accent-glow);
  color: var(--accent-light);
}

.cs-flow-node--end {
  border-color: rgba(52, 211, 153, 0.35);
  background: rgba(52, 211, 153, 0.06);
  color: #34d399;
}

.cs-flow-node--issue {
  border-color: rgba(251, 146, 60, 0.35);
  background: rgba(251, 146, 60, 0.06);
  color: #fb923c;
}

.cs-flow-node--sm {
  padding: 6px 12px;
  font-size: 0.78rem;
}

.cs-flow-arrow {
  color: var(--text-muted);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.cs-flow-arrow--sm {
  font-size: 0.95rem;
}

.cs-flow-branch {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cs-flow-branch-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.02);
}

.cs-flow-branch-row--ok {
  border-left: 2px solid rgba(52, 211, 153, 0.4);
}

.cs-flow-branch-row--warn {
  border-left: 2px solid rgba(251, 146, 60, 0.4);
}

/* ============================================================
   FOOTER
   ============================================================ */
.cs-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
  padding: 28px 24px;
}

.cs-footer-inner {
  max-width: var(--max-w-lg);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.cs-footer-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.25s;
}

.cs-footer-back:hover { color: var(--accent-light); }

.cs-footer-copy {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.cs-footer-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .cs-cover {
    padding-top: calc(var(--nav-h) + 48px);
    padding-bottom: 56px;
  }

  .cs-cover-title {
    font-size: clamp(1.7rem, 7vw, 2.4rem);
  }

  .cs-meta-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cs-process-steps {
    gap: 6px;
  }

  .cs-step-num { width: 36px; height: 36px; font-size: 0.78rem; }

  .cs-findings-grid,
  .cs-persona-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cs-evidence-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cs-mockup-grid {
    grid-template-columns: 1fr;
  }

  .cs-mockup-item--full {
    grid-column: 1;
  }

  .cs-scope-list {
    grid-template-columns: 1fr 1fr;
  }

  .cs-principles-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cs-stat-row {
    grid-template-columns: 1fr 1fr;
  }

  .cs-testing-divider h3 {
    font-size: 0.92rem;
  }

  .cs-footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .cs-section { padding-top: 52px; margin-top: 52px; }

  .cs-folder-row {
    flex-wrap: wrap;
  }

  .cs-folder-row .cs-resource-button {
    margin-left: 56px;
  }

  .cs-findings-grid,
  .cs-persona-grid,
  .cs-scope-list,
  .cs-principles-grid,
  .cs-evidence-grid {
    grid-template-columns: 1fr;
  }

  .cs-meta-grid {
    grid-template-columns: 1fr;
  }

  .cs-stat-row {
    grid-template-columns: 1fr 1fr;
  }

  .cs-process-steps {
    gap: 4px;
  }

  .cs-step-name { font-size: 0.68rem; }

  .cs-recommendation-item {
    transform: none !important;
  }

  .cs-problem-statement {
    padding: 20px;
  }

  .cs-link-card {
    flex-wrap: wrap;
  }

  .cs-testing-divider {
    flex-wrap: wrap;
  }
}