/**
 * case-01.css — Styles specific to 001 · Building My Portfolio (meta case study).
 *
 * Base case-study tokens and shared components live in case-study.css.
 * global.css provides brand tokens (--ink, --accent, --f-display, etc.).
 *
 * What's here:
 *   • Case-01 hero grid + mockup frame
 *   • Section scaffolding (labels, timelines, callouts)
 *   • Design System showcase (colours, typography, spacing, components, motion, letter-spacing)
 *   • Deliverables grid + Results cards
 *   • Responsive breakpoints (1024 tablet, 768 mobile)
 *   • Case-01-specific DS decode char decoding colour
 */

/* ═══ CASE STUDY OVERRIDES ═══ */
.case-study { position: relative; z-index: 1; }

/* ═══ BACK LINK ═══ */
.back-link {
  max-width: var(--cs-content-max); margin: 0 auto;
  padding: 1.25rem var(--cs-gutter) 0;
  font-family: var(--f-mono); font-size: 0.68rem;
  letter-spacing: 0.18em; text-transform: uppercase;
}
.back-link a { color: var(--accent-on-light); text-decoration: none; transition: color 0.2s; }
.back-link a:hover { color: var(--ink); }

/* ═══ HERO ═══ */
.cs-hero {
  display: grid;
  grid-template-columns: 55fr 45fr;
  gap: 5rem;
  align-items: start;
  padding: 2.5rem var(--cs-gutter) var(--cs-section-gap);
  max-width: var(--cs-content-max); margin: 0 auto;
  position: relative; overflow: hidden;
}

.cs-hero-content { display: flex; flex-direction: column; }

.cs-hero-visual {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 0.5rem;
}

.cs-hero-mockup {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--ink-soft);
  border: 1px solid var(--ink);
  position: relative;
  overflow: hidden;
}

.cs-hero-mockup img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: top;
  display: block;
}

/* corner brackets on mockup */
.cs-hero-mockup::before {
  content: '';
  position: absolute; top: 12px; left: 12px;
  width: 20px; height: 20px;
  border-top: 1px solid var(--accent);
  border-left: 1px solid var(--accent);
  z-index: 2;
}
.cs-hero-mockup::after {
  content: '';
  position: absolute; bottom: 12px; right: 12px;
  width: 20px; height: 20px;
  border-bottom: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
  z-index: 2;
}

.cs-mockup-label {
  position: absolute; bottom: -1.75rem; left: 0;
  font-family: var(--f-mono); font-size: 0.6rem;
  color: var(--ink-mid); letter-spacing: 0.15em;
  text-transform: uppercase;
}

.cs-mockup-placeholder {
  width: 100%; height: 100%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 0.75rem;
  background: var(--ink-soft);
  padding: 1.5rem;
}

.cs-mockup-placeholder-label {
  font-family: var(--f-mono); font-size: 0.62rem;
  color: var(--accent); letter-spacing: 0.18em;
  text-transform: uppercase;
}

.cs-mockup-placeholder-hint {
  font-family: var(--f-mono); font-size: 0.55rem;
  color: var(--ink-dim); letter-spacing: 0.1em;
}

.cs-hero-number {
  font-family: var(--f-mono); font-size: 0.68rem; color: var(--accent-on-light);
  letter-spacing: 0.18em; text-transform: uppercase;
  margin-bottom: var(--cs-element-gap); opacity: 0; animation: slideUp 0.8s var(--ease) 0.1s forwards;
}
.cs-hero-title {
  font-family: var(--f-display); font-size: clamp(2rem, 3.5vw, 3.5rem);
  font-weight: 700; line-height: 1.05; margin-bottom: var(--cs-element-gap); letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0; animation: slideUp 0.8s var(--ease) 0.2s forwards;
}
.cs-hero-title span { color: var(--ink); }

.cs-tags {
  display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: var(--cs-inner-gap);
  opacity: 0; animation: slideUp 0.8s var(--ease) 0.3s forwards;
}
.cs-tag {
  font-family: var(--f-mono); font-size: 0.62rem; padding: 0.5rem 1rem;
  border: 1px solid var(--ink); border-radius: 0;
  text-transform: uppercase; letter-spacing: 0.18em; transition: all 0.3s var(--ease);
}
.cs-tag:hover { background: var(--ink); color: var(--bg); }

.cs-hero-description {
  font-family: var(--f-body); font-size: 1rem; line-height: 1.8;
  font-weight: 300;
  margin-bottom: var(--cs-inner-gap); max-width: 600px;
  opacity: 0; animation: slideUp 0.8s var(--ease) 0.4s forwards;
}

.cs-hero-meta {
  display: grid; grid-template-columns: repeat(4, auto);
  justify-content: start;
  gap: 0.5rem 2.5rem;
  opacity: 0; animation: slideUp 0.8s var(--ease) 0.5s forwards;
}
.cs-meta-item { font-family: var(--f-mono); }
.cs-meta-label {
  color: var(--accent-on-light); text-transform: uppercase; letter-spacing: 0.18em;
  font-size: 0.58rem; margin-bottom: 0.35rem; display: block;
}
.cs-meta-value {
  color: var(--ink); font-size: 0.75rem; letter-spacing: 0.05em;
  white-space: nowrap;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ═══ SECTIONS ═══ */
.cs-section {
  max-width: var(--cs-content-max); margin: 0 auto;
  padding: var(--cs-section-gap) var(--cs-gutter);
  position: relative;
}
.cs-section-label {
  position: absolute; left: 16px; top: 50%;
  translate: 0 -50%;
  font-family: var(--f-mono); font-size: 0.58rem;
  text-transform: uppercase; letter-spacing: 0.22em; color: var(--ink-dim);
  writing-mode: vertical-rl; transform: rotate(180deg);
  pointer-events: none;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* classifiedPulse keyframe lives in case-study.css (shared, 2026-04-20).
   Removed local copy to avoid duplication (Rule #6). */

/* Hover bloom demo (Case Study Components) */
.ds-hover-bloom-demo:hover {
  border-color: rgba(255, 51, 51, 0.55);
  box-shadow: 0 0 32px rgba(255, 51, 51, 0.15),
              inset 0 0 40px rgba(255, 51, 51, 0.04);
}

@media (prefers-reduced-motion: reduce) {
  .ds-component-preview [data-decode],
  .ds-component-preview [style*="classifiedPulse"] { animation: none; }
}

/* ═══ PROCESS ═══ */
.process-container { padding-left: 3rem; }
.process-step {
  display: grid; grid-template-columns: 200px 1fr; gap: var(--cs-inner-gap);
  margin-bottom: var(--cs-inner-gap); align-items: start;
  opacity: 0; transition: opacity 0.6s var(--ease);
}
.process-step.in { opacity: 1; }
.process-number {
  font-family: var(--f-display); font-size: 3rem; font-weight: 700;
  color: var(--accent-on-light); line-height: 1;
}
.process-title {
  font-family: var(--f-display); font-size: 1.5rem; font-weight: 600;
  margin-bottom: 1rem; letter-spacing: 0.05em; text-transform: uppercase;
}
.process-content p { font-size: 0.95rem; line-height: 1.8; margin-bottom: var(--cs-element-gap); font-weight: 300; }
.process-content ul { list-style: none; margin-bottom: var(--cs-element-gap); }
.process-content ul li {
  font-size: 1rem; line-height: 1.8; padding-left: 1.5rem;
  position: relative; margin-bottom: 0.5rem;
}
.process-content ul li::before {
  content: '→'; position: absolute; left: 0;
  color: var(--accent-on-light); font-family: var(--f-mono);
}

/* ═══ IMAGE PLACEHOLDERS ═══
   Padding added so inner labels/hints never hug the border (global rule #4). */
.image-placeholder {
  width: 100%; height: 250px; background: var(--dark);
  border: 1px solid var(--ink);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 1rem;
  position: relative; margin-top: var(--cs-element-gap); overflow: hidden;
  padding: 2rem 1.5rem;
}
.image-placeholder::before {
  content: ''; position: absolute;
  width: 20px; height: 20px;
  border-top: 2px solid var(--accent); border-left: 2px solid var(--accent);
  top: 15px; left: 15px;
}
.image-placeholder::after {
  content: ''; position: absolute;
  width: 20px; height: 20px;
  border-bottom: 2px solid var(--accent); border-right: 2px solid var(--accent);
  bottom: 15px; right: 15px;
}
.image-placeholder img {
  width: 100%; height: 100%; object-fit: cover;
  position: absolute; top: 0; left: 0;
}
.image-placeholder-text {
  font-family: var(--f-mono); font-size: 0.68rem;
  color: var(--accent); text-align: center; letter-spacing: 0.18em;
  text-transform: uppercase; position: relative; z-index: 1;
}
.image-placeholder-hint {
  font-family: var(--f-mono); font-size: 0.55rem;
  color: var(--ink-dim); text-align: center; letter-spacing: 0.1em;
  position: relative; z-index: 1;
}

/* When an image is used inside .image-placeholder as a real visual (not a
   placeholder), it fills flow instead of being absolute. Replaces prior
   inline style="position:static; width:100%; height:auto; display:block;". */
.image-placeholder.is-filled { height: auto; padding: 0; }
.image-placeholder.is-filled::before,
.image-placeholder.is-filled::after { display: none; }
.image-placeholder.is-filled img {
  position: static; width: 100%; height: auto; display: block;
}

/* ═══ CALLOUT ═══ */
.callout {
  background: var(--dark); color: var(--bg);
  padding: var(--cs-inner-gap); margin: var(--cs-element-gap) 0;
  border-left: 3px solid var(--accent);
}
.callout-label {
  font-family: var(--f-mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 2px;
  color: var(--accent); margin-bottom: 0.75rem; display: block;
}
.callout p { font-size: 1rem; line-height: 1.8; color: var(--bg); font-weight: 300; }

/* Career timeline now uses .phase-timeline.is-career (shared component
   in case-study.css). Legacy .timeline classes removed 2026-04-23. */

/* ═══ DESIGN SYSTEM (DARK SECTION) ═══ */
/* Generous vertical padding — dark sections need breathing room around the colour-shift transition */
.ds-section {
  background: var(--dark); color: var(--bg);
  margin: 0; padding: calc(var(--cs-section-gap) * 2) var(--cs-gutter);
}
.ds-inner { max-width: var(--cs-content-max); margin: 0 auto; }
.ds-title {
  font-family: var(--f-display); font-size: 2rem; font-weight: 700;
  color: var(--bg); margin-bottom: 1rem;
}
.ds-subtitle {
  font-family: var(--f-body); font-size: 1.125rem; line-height: 1.8;
  color: var(--ink-on-dark); margin-bottom: var(--cs-section-gap);
}

/* Tier titles — macro hierarchy (Foundations / Atoms / Molecules / Patterns / Effects) */
.ds-tier {
  margin-top: calc(var(--cs-section-gap) * 1.5);
  margin-bottom: var(--cs-section-gap);
  padding-top: 1.5rem;
  border-top: 1px solid rgba(240, 237, 232, 0.25);
}
.ds-tier:first-of-type { margin-top: 0; border-top: none; padding-top: 0; }
.ds-tier-label {
  font-family: var(--f-mono); font-size: 0.7rem;
  color: var(--accent); letter-spacing: 0.22em;
  text-transform: uppercase; margin-bottom: 0.5rem;
}
.ds-tier-title {
  font-family: var(--f-display); font-size: 1.75rem; font-weight: 700;
  color: var(--bg); margin-bottom: 0.5rem;
}
.ds-tier-desc {
  font-family: var(--f-body); font-size: 0.9rem; line-height: 1.6;
  color: var(--ink-dim); max-width: 640px;
}

.ds-group { margin-bottom: var(--cs-section-gap); }
.ds-group--top-spaced { margin-top: var(--cs-section-gap); }
.ds-group-title {
  font-family: var(--f-mono); font-size: 0.75rem;
  text-transform: uppercase; letter-spacing: 2px; color: var(--accent);
  margin-bottom: 2rem; padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(240, 237, 232, 0.1);
}
.ds-subgroup-title {
  font-family: var(--f-mono); font-size: 0.65rem;
  text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--ink-dim); margin: 1.5rem 0 1rem;
}
.ds-subgroup-title:first-child { margin-top: 0; }

/* Spaced variant — replaces inline style="margin-top: 2rem". */
.ds-subgroup-title--spaced { margin-top: 2rem; }

/* Colour tokens — 4 cols desktop, 2 tablet, 1 mobile (fixed, not auto-fit) */
.ds-colours {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.ds-colour-card {
  border: 1px solid rgba(240, 237, 232, 0.1); border-radius: 4px; overflow: hidden;
}
.ds-colour-swatch { height: 80px; width: 100%; }
.ds-colour-info { padding: 1rem; }
.ds-colour-name { font-family: var(--f-mono); font-size: 0.8rem; margin-bottom: 0.25rem; color: var(--bg); }
.ds-colour-hex { font-family: var(--f-mono); font-size: 0.7rem; color: var(--ink-dim); }
.ds-colour-usage {
  font-family: var(--f-body); font-size: 0.75rem;
  color: var(--ink-dim); margin-top: 0.5rem; line-height: 1.4;
}

/* Typography scale — grid with fixed meta column for consistent horizontal alignment */
.ds-type-row {
  display: grid; grid-template-columns: 240px 1fr;
  align-items: start; gap: 2rem;
  padding: 1.5rem 0; border-bottom: 1px solid rgba(240, 237, 232, 0.08);
}
.ds-type-meta { min-width: 0; }
.ds-type-name {
  font-family: var(--f-mono); font-size: 0.7rem; color: var(--accent);
  text-transform: uppercase; letter-spacing: 1px;
}
.ds-type-specs { font-family: var(--f-mono); font-size: 0.65rem; color: var(--ink-dim); margin-top: 0.25rem; }
.ds-type-font {
  font-family: var(--f-mono); font-size: 0.6rem; color: var(--bg);
  margin-top: 0.35rem; opacity: 0.5;
}
.ds-type-sample { color: var(--bg); }

/* Spacing */
.ds-spacing-row {
  display: flex; align-items: center; gap: 1.5rem;
  padding: 1rem 0; border-bottom: 1px solid rgba(240, 237, 232, 0.08);
}
.ds-spacing-label { font-family: var(--f-mono); font-size: 0.75rem; color: var(--ink-dim); min-width: 80px; }
.ds-spacing-bar { height: 8px; background: var(--accent); border-radius: 1px; opacity: 0.7; }
.ds-spacing-value { font-family: var(--f-mono); font-size: 0.7rem; color: var(--accent); min-width: 50px; }

/* Components */
.ds-components {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem;
}
.ds-component-card {
  border: 1px solid rgba(240, 237, 232, 0.1); border-radius: 4px; padding: 2rem;
}
.ds-component-card--full { grid-column: 1 / -1; }

/* Default (dark surface) component description — sits below the preview.
   margin-top gives it room from the preview block; ink-on-dark stops the
   description from competing with the preview content as bright body text. */
.ds-component-context {
  font-family: var(--f-body); font-size: 0.72rem; color: var(--ink-on-dark);
  margin-top: 1rem; line-height: 1.5;
}

/* Light card — used for components that live on the site's off-white surface (no dark mode yet) */
.ds-component-card--light {
  background: var(--bg); color: var(--ink); border-color: transparent;
}
.ds-component-card--light .ds-component-label { color: var(--ink-mid); }
.ds-component-card--light .ds-component-context {
  color: var(--ink-mid);
}

/* Inline code sample inside .ds-component-context — replaces inline style attrs
   on <code> tags. .err variant uses --error (red) for destructive tokens. */
.ds-component-context code {
  font-family: var(--f-mono); font-size: 0.7rem; color: var(--accent);
}
.ds-component-context code.err { color: var(--error, #FF3333); }
.ds-component-label {
  font-family: var(--f-mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--accent); margin-bottom: 1.5rem;
}

/* Spaced component card — replaces inline style="margin-bottom: 2rem". */
.ds-component-card--spaced { margin-bottom: 2rem; }

.ds-btn {
  font-family: var(--f-mono); font-size: 0.8rem; padding: 0.75rem 1.5rem;
  background: transparent; border: 1px solid var(--bg); color: var(--bg);
  letter-spacing: 1px; cursor: pointer; transition: all 0.3s var(--ease);
  display: inline-block; margin-right: 0.75rem; margin-bottom: 0.75rem;
}
.ds-btn:hover { background: var(--accent); border-color: var(--accent); color: var(--dark); }
.ds-btn--primary { background: var(--accent); border-color: var(--accent); color: var(--dark); }
.ds-btn--primary:hover { background: transparent; color: var(--accent); }

.ds-tag {
  font-family: var(--f-mono); font-size: 0.7rem; padding: 0.4rem 0.8rem;
  border: 1px solid var(--bg); display: inline-block;
  margin-right: 0.5rem; margin-bottom: 0.5rem;
  letter-spacing: 1px; text-transform: uppercase;
  transition: all 0.3s var(--ease);
}
.ds-tag:hover { background: var(--bg); color: var(--dark); }

.ds-hud-item {
  font-family: var(--f-mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--ink-dim); display: inline-block;
  margin-right: 2rem; margin-bottom: 0.5rem;
}
.ds-hud-item em { font-style: normal; color: var(--accent); }

/* Navigation preview — now on light surface (matches the actual site) */
.ds-nav-preview {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.25rem 1.5rem; border-top: 1px solid rgba(8, 8, 8, 0.12);
  border-bottom: 1px solid rgba(8, 8, 8, 0.12);
  gap: 2rem;
}
.ds-nav-logo { font-family: var(--f-display); font-weight: 700; font-size: 1rem; color: var(--ink); }
.ds-nav-logo em { color: var(--accent); font-style: normal; }
.ds-nav-items {
  display: flex; gap: 1.5rem; list-style: none;
  font-family: var(--f-mono); font-size: 0.75rem; color: var(--ink-mid);
}
.ds-nav-status {
  /* Mirrors .nav-status from global.css — the mock must match what ships. */
  font-family: var(--f-mono); font-size: 0.6rem; color: var(--ink-dim);
  display: flex; align-items: center; gap: 0.5rem;
  letter-spacing: 0.15em; text-transform: uppercase;
}
.ds-nav-status .ds-status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 8px var(--accent);
}

/* Inline row helper — 0.75rem gap row used inside DS component previews.
   Replaces inline style="display: flex; align-items: center; gap: 0.75rem". */
.ds-inline-row { display: flex; align-items: center; gap: 0.75rem; }
.ds-inline-row .ds-status-label {
  font-family: var(--f-mono); font-size: 0.8rem; color: var(--bg);
}

/* Form validation — full-width, 2 side-by-side states with explicit labels */
.ds-form-validation-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem;
}
.ds-form-state {
  display: flex; flex-direction: column; gap: 0.75rem;
  padding: 1.5rem; border: 1px dashed rgba(240, 237, 232, 0.1);
  border-radius: 4px;
}
.ds-form-state-label {
  font-family: var(--f-mono); font-size: 0.6rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-dim); margin-bottom: 0.25rem;
}
.ds-form-state--error .ds-form-state-label { color: var(--error, #FF3333); }
.ds-form-state--valid .ds-form-state-label { color: var(--accent); }
.ds-form-field {
  border-bottom: 1px solid rgba(240, 237, 232, 0.2);
  padding-bottom: 8px;
  font-family: var(--f-body); font-size: 0.9rem; color: var(--bg);
}
.ds-form-field--error { border-bottom-color: #FF3333; color: rgba(240,237,232,0.35); font-style: italic; }
.ds-form-field--valid { border-bottom-color: var(--accent); }
.ds-form-error-msg {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 10px 12px; background: rgba(255, 51, 51, 0.06);
  border-left: 2px solid #FF3333;
}
.ds-form-error-msg-tag {
  font-family: var(--f-mono); font-size: 0.6rem; letter-spacing: 0.15em;
  color: #FF3333; white-space: nowrap; flex-shrink: 0;
}
.ds-form-error-msg-text {
  font-family: var(--f-mono); font-size: 0.6rem; letter-spacing: 0.08em;
  color: rgba(240, 237, 232, 0.7); text-transform: uppercase; line-height: 1.5;
}
.ds-form-valid-msg {
  font-family: var(--f-mono); font-size: 0.6rem; letter-spacing: 0.15em;
  color: var(--accent); text-transform: uppercase;
}

/* Phase Timeline preview — replica faithful do case-02 */
.ds-phase-timeline {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 0; position: relative; padding-top: 1.5rem;
}
.ds-phase-timeline::before {
  content: ''; position: absolute;
  top: calc(1.5rem + 6px); left: 0; right: 1.5rem;
  height: 2px; background: rgba(240, 237, 232, 0.15);
}
.ds-phase-card { position: relative; padding: 0 1.5rem 0 0; }
.ds-phase-dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--ink-soft);
  position: relative; z-index: 2; margin-bottom: 1rem;
}
.ds-phase-label {
  font-family: var(--f-mono); font-size: 0.55rem;
  color: var(--accent); letter-spacing: 0.18em;
  text-transform: uppercase; margin-bottom: 0.3rem;
}
.ds-phase-name {
  font-family: var(--f-display); font-size: 0.9rem;
  font-weight: 600; color: var(--bg); margin-bottom: 0.4rem;
}
.ds-phase-date {
  font-family: var(--f-mono); font-size: 0.55rem;
  color: var(--ink-dim); letter-spacing: 0.1em;
  margin-bottom: 0.6rem;
}
.ds-phase-tasks { list-style: none; padding: 0; margin: 0; }
.ds-phase-tasks li {
  font-family: var(--f-body); font-size: 0.7rem; line-height: 1.5;
  padding-left: 1rem; position: relative; color: var(--ink-dim);
  margin-bottom: 0.25rem;
}
.ds-phase-tasks li::before {
  content: '\2192'; position: absolute; left: 0;
  color: var(--accent); font-family: var(--f-mono); font-size: 0.65rem;
}

/* Restricted Area frame — 16:9 to match real usage in case-02/03/04 */
.ds-restricted-frame {
  position: relative; width: 100%; aspect-ratio: 16 / 9;
  background: var(--ink-soft); border: 1px solid rgba(255, 51, 51, 0.25);
  overflow: hidden;
}

/* Motion scale */
.ds-motion-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem;
}
.ds-motion-card {
  border: 1px solid rgba(240, 237, 232, 0.1); border-radius: 4px;
  padding: 1.25rem;
}
.ds-motion-name {
  font-family: var(--f-mono); font-size: 0.75rem; color: var(--bg);
  margin-bottom: 0.35rem;
}
.ds-motion-val {
  font-family: var(--f-mono); font-size: 0.65rem; color: var(--accent);
  margin-bottom: 0.75rem; word-break: break-word;
}
.ds-motion-usage {
  font-family: var(--f-body); font-size: 0.75rem; color: var(--ink-dim);
  line-height: 1.5;
}
/* Inline accent token inside motion usage — replaces inline style on <code>. */
.ds-motion-usage code,
.ds-tier-desc code {
  font-family: var(--f-mono); font-size: 0.8rem; color: var(--accent);
}
.ds-motion-usage code { font-size: 0.65rem; }

/* Letter-spacing scale */
.ds-ls-row {
  display: grid; grid-template-columns: 140px 140px 1fr;
  align-items: baseline; gap: 1.5rem;
  padding: 1rem 0; border-bottom: 1px solid rgba(240, 237, 232, 0.08);
}
.ds-ls-token { font-family: var(--f-mono); font-size: 0.75rem; color: var(--bg); }
.ds-ls-val { font-family: var(--f-mono); font-size: 0.7rem; color: var(--accent); }
.ds-ls-sample {
  font-family: var(--f-mono); font-size: 0.8rem; color: var(--ink-dim);
  text-transform: uppercase;
}

.ds-cursor-demo { display: flex; align-items: center; gap: 2rem; }
.ds-cursor-dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; }
.ds-cursor-ring {
  width: 34px; height: 34px; border: 1px solid var(--accent); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; opacity: 0.5;
}
.ds-cursor-ring .ds-cursor-dot { opacity: 1; }
.ds-cursor-label { font-family: var(--f-mono); font-size: 0.7rem; color: var(--ink-dim); }
.ds-cursor-label--spaced { margin-top: 0.25rem; }

.ds-code {
  background: rgba(0, 0, 0, 0.3); border: 1px solid rgba(240, 237, 232, 0.08);
  padding: 1.5rem; border-radius: 4px; font-family: var(--f-mono);
  font-size: 0.75rem; line-height: 1.8; color: var(--ink-dim); overflow-x: auto; margin-top: 1rem;
}
.ds-code .token-prop { color: var(--accent); }
.ds-code .token-val { color: var(--bg); }
.ds-code .token-comment { color: var(--ink-mid); }

/* Inline body paragraph helper — used inside DS cards where a small muted body
   paragraph is placed under a subgroup title. Replaces inline style. */
.ds-body-note {
  font-family: var(--f-body); font-size: 0.8rem;
  color: var(--ink-dim); line-height: 1.6; max-width: 720px;
}

/* Dotted / bordered frame used in DS preview blocks — replaces inline style. */
.ds-preview-frame {
  border: 1px solid rgba(240, 237, 232, 0.15);
  padding: 1rem;
  position: relative;
}

/* Hero screenshot inside .cs-hero-mockup when it's a real image with radius. */
.cs-hero-mockup img.cs-hero-screenshot {
  border-radius: 2px;
}

/* Full-width section screenshot inside deliverable/figure containers. */
.ds-section-screenshot {
  width: 100%;
  display: block;
}

/* ═══ DELIVERABLES ═══ */
.deliverables-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: var(--cs-inner-gap); padding-left: 3rem;
}
.deliverable-item { opacity: 0; transition: opacity 0.6s var(--ease); }
.deliverable-item.in { opacity: 1; }
.deliverable-image {
  width: 100%; height: 220px; background: var(--dark);
  border: 1px solid var(--ink);
  display: flex; align-items: center; justify-content: center;
  position: relative; margin-bottom: 1rem; overflow: hidden;
  padding: 1.5rem;
}
.deliverable-image img {
  width: 100%; height: 100%; object-fit: cover;
  position: absolute; top: 0; left: 0;
}
.deliverable-image::before {
  content: ''; position: absolute;
  width: 16px; height: 16px;
  border-top: 2px solid var(--accent); border-left: 2px solid var(--accent);
  top: 12px; left: 12px;
}
.deliverable-image::after {
  content: ''; position: absolute;
  width: 16px; height: 16px;
  border-bottom: 2px solid var(--accent); border-right: 2px solid var(--accent);
  bottom: 12px; right: 12px;
}
.deliverable-placeholder-text {
  font-family: var(--f-mono); font-size: 0.62rem;
  color: var(--accent); text-align: center; letter-spacing: 0.18em;
  text-transform: uppercase; position: relative; z-index: 1;
}
.deliverable-caption {
  font-family: var(--f-mono); font-size: 0.75rem;
  color: var(--ink-mid); text-align: center; letter-spacing: 0.05em;
}

/* ═══ RESULTS ═══ */
.results-container {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--cs-inner-gap); padding-left: 3rem;
}
.result-item {
  opacity: 0; transition: opacity 0.6s var(--ease);
  padding: var(--cs-inner-gap); border: 1px solid var(--ink);
}
.result-item.in { opacity: 1; }
.result-label {
  font-family: var(--f-mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 2px;
  color: var(--accent); margin-bottom: 1rem;
}
.result-title {
  font-family: var(--f-display); font-size: 1.25rem;
  font-weight: 600; margin-bottom: 0.75rem;
}
.result-text { font-size: 0.95rem; line-height: 1.8; color: var(--ink-mid); }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 1024px) {
  :root {
    --cs-gutter: 2rem;
    --cs-section-gap: 2.5rem;
  }
  .cs-hero { grid-template-columns: 1fr; gap: var(--cs-inner-gap); }
  .cs-hero-visual { display: none; }
  .cs-section-label { display: none; }
  .process-container { padding-left: 0; }
  .process-step { grid-template-columns: 120px 1fr; }
  .overview, .results-container { padding-left: 0; }
  .deliverables-grid { padding-left: 0; }
  .ds-colours { grid-template-columns: repeat(2, 1fr); }
  .ds-components { grid-template-columns: repeat(2, 1fr); }
  .ds-motion-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root {
    --cs-gutter: 1.25rem;
    --cs-section-gap: 2rem;
    --cs-inner-gap: 1.5rem;
  }
  .cs-hero {
    grid-template-columns: 1fr;
    gap: var(--cs-inner-gap);
    overflow: visible;
    padding: 1.5rem var(--cs-gutter) var(--cs-section-gap);
  }
  .cs-hero-title { font-size: clamp(1.5rem, 7vw, 2rem); }
  .cs-hero-visual { display: none; }
  .cs-hero-description { max-width: 100%; font-size: 0.9rem; }
  .cs-hero-meta {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem 1.5rem;
  }
  .cs-meta-value { white-space: normal; font-size: 0.7rem; }
  .cs-tags { gap: 0.5rem; }
  .cs-tag { font-size: 0.55rem; padding: 0.4rem 0.75rem; letter-spacing: 0.12em; }
  .cs-section-label {
    writing-mode: horizontal-tb; transform: none;
    position: relative; left: 0; top: 0; translate: none;
    margin-bottom: var(--cs-element-gap);
  }
  .cs-section { padding: var(--cs-section-gap) var(--cs-gutter); }
  .overview, .results-container { padding-left: 0; }
  .deliverables-grid { padding-left: 0; grid-template-columns: 1fr; }
  .process-container { padding-left: 0; }
  .process-step { grid-template-columns: 1fr; gap: 0.5rem; }
  .process-number { font-size: 2rem; }
  .ds-type-row { grid-template-columns: 1fr; gap: 0.75rem; }
  .ds-type-meta { min-width: auto; }
  .ds-colours { grid-template-columns: 1fr; }
  .ds-components { grid-template-columns: 1fr; }
  .ds-form-validation-grid { grid-template-columns: 1fr; gap: 1rem; }
  /* Mobile — cards stack; connector pivots to a vertical line.
     Exact endpoints come from phase-timeline.js via CSS vars; fallback
     height keeps a reasonable line if JS is off. Dot absolute-positioned
     at top-left so it aligns with the PHASE label on the Y axis. */
  .ds-phase-timeline { grid-template-columns: 1fr; gap: 1.5rem; }
  .ds-phase-card { padding: 0 0 0 1.5rem; }
  .ds-phase-dot {
    position: absolute;
    top: 1px;
    left: 0;
    margin: 0;
  }
  .ds-phase-timeline::before {
    display: block;
    top: var(--timeline-start-mobile, calc(1.5rem + 7px));
    left: 5px;
    right: auto;
    bottom: auto;
    width: 2px;
    height: var(--timeline-length-mobile, calc(100% - 2.75rem));
    background: rgba(240, 237, 232, 0.15);
  }
  .ds-ls-row { grid-template-columns: 100px 100px 1fr; gap: 1rem; }
  .timeline-item { padding-left: 1rem; }
  .image-placeholder { height: auto; }

  /* DS nav preview — on mobile, mirror the real site (hamburger-only).
     The horizontal flex layout with logo + 3 links + status overflows
     into a messy stack at 375px. Drop the status, compact the links. */
  .ds-nav-preview {
    gap: 1rem;
    padding: 0.9rem 1rem;
  }
  .ds-nav-items { gap: 0.9rem; font-size: 0.62rem; }
  .ds-nav-status { display: none; }
}

/* DS Decode & Glitch — case-01-specific decoding colour is already handled
   in case-study.css. Base selectors inherited from global.css. */