/* Project-specific layout on top of tokens.css. */

/* =====================================================================
   Header / nav
   ===================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background-color var(--duration-standard) var(--ease-standard);
}

/* Frosted glass — applied once the page scrolls, so content passing
   behind the fixed header stays legible instead of overlapping it raw. */
.site-header.is-scrolled {
  background: color-mix(in srgb, var(--color-bg) 72%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-6);
}

.site-logo {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}

.site-nav-links {
  display: flex;
  gap: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
}

.site-nav-links a {
  color: var(--color-text);
  text-decoration: none;
}

.site-nav-links a:hover {
  color: var(--color-link);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 1.5rem;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--duration-fast) var(--ease-standard), opacity var(--duration-fast) var(--ease-standard);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 40rem) {
  .nav-toggle {
    display: flex;
  }

  .site-nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
  }

  .site-nav-links.is-open {
    display: flex;
  }

  .site-nav-links a {
    padding: var(--space-4) var(--container-pad);
    border-bottom: 1px solid var(--color-hairline);
  }

  .site-nav-links a:last-child {
    border-bottom: none;
  }
}

/* =====================================================================
   Footer
   ===================================================================== */

.site-footer {
  border-top: 1px solid var(--color-hairline);
  padding-block: var(--space-8);
}

/* =====================================================================
   Flash messages
   ===================================================================== */

.flash-messages {
  padding-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.flash {
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-sm);
}

.flash-error {
  border-color: var(--color-accent);
  color: var(--color-text);
}

.flash-success {
  color: var(--color-text);
}

/* =====================================================================
   Hero
   ===================================================================== */

.hero {
  padding-block: var(--space-24) var(--space-16);
}

/* .prose's narrower max-width would otherwise re-center the hero (via
   .container's margin-inline: auto) inside the page instead of keeping
   it flush left with the header/nav above it. Cancel the section-level
   cap and constrain the text children directly so they stay left-aligned. */
.hero.prose {
  max-width: var(--container-width);
  margin-inline: auto;
}

.hero .lead,
.hero .caption {
  max-width: var(--prose-width);
}

.hero .stat-callout {
  max-width: 24rem;
}

/* Same fix as .hero.prose above, for non-hero sections that combine
   .container with .prose (e.g. the closing background/lead blocks). */
.section.prose {
  max-width: var(--container-width);
  margin-inline: auto;
}

.section.prose > * {
  max-width: var(--prose-width);
}

.hero h1 {
  max-width: 44rem;
}

/* Full-viewport opener — homepage only, see .hero-full-screen on index.html */
.hero-full-screen {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: var(--space-16);
}

.hero-full-screen h1 {
  max-width: 56rem;
  font-size: clamp(2.75rem, 6vw + 1.5rem, 6.5rem);
}

.hero-full-screen .lead {
  max-width: 38rem;
  font-size: var(--fs-md);
}

/* Scan-reveal — a single brass scanline sweeps across the headline once,
   revealing the text as it passes, like a document being scanned. */
.scan-reveal {
  position: relative;
  overflow: hidden;
}

.scan-reveal::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: var(--color-accent);
  opacity: 0;
  pointer-events: none;
}

@media (prefers-reduced-motion: no-preference) {
  .scan-reveal {
    clip-path: inset(0 100% 0 0);
    animation: scan-reveal-text 1100ms var(--ease-standard) forwards;
  }

  .scan-reveal::after {
    animation: scan-reveal-line 1100ms var(--ease-standard) forwards;
  }
}

@keyframes scan-reveal-text {
  to {
    clip-path: inset(0 0 0 0);
  }
}

@keyframes scan-reveal-line {
  0% {
    left: 0;
    opacity: 1;
  }
  92% {
    opacity: 1;
  }
  100% {
    left: 100%;
    opacity: 0;
  }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

/* =====================================================================
   Card grid
   ===================================================================== */

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

@media (max-width: 56rem) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 30rem) {
  .grid {
    grid-template-columns: 1fr;
  }
}

.help-card {
  text-decoration: none;
  color: inherit;
}

.help-card:hover h4 {
  color: var(--color-link);
}

.help-card p {
  color: var(--color-muted);
  font-size: var(--fs-sm);
  margin: 0;
}

/* =====================================================================
   Service list
   ===================================================================== */

.service-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: start;
  gap: var(--space-6);
}

@media (max-width: 56rem) {
  .service-list {
    grid-template-columns: 1fr;
  }
}

.service-card p {
  margin: 0 0 var(--space-3);
  max-width: 34rem;
}

.service-card p:last-child {
  margin-bottom: 0;
}

.service-proof {
  font-size: var(--fs-sm);
  color: var(--color-muted);
}

/* =====================================================================
   Impact list
   ===================================================================== */

.impact-list {
  display: flex;
  flex-direction: column;
}

.impact-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-hairline);
  text-decoration: none;
  color: inherit;
}

.impact-item:last-child {
  border-bottom: 1px solid var(--color-hairline);
}

.impact-item:hover .impact-title {
  color: var(--color-link);
}

.impact-title {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 600;
  transition: color var(--duration-fast) var(--ease-standard);
}

.impact-result {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-muted);
  text-align: right;
  white-space: nowrap;
}

@media (max-width: 40rem) {
  .impact-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }

  .impact-result {
    text-align: left;
    white-space: normal;
  }
}

/* =====================================================================
   Career arc list
   ===================================================================== */

.arc-list {
  display: flex;
  flex-direction: column;
}

.arc-item {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-6);
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-hairline);
}

.arc-item:last-child {
  border-bottom: 1px solid var(--color-hairline);
}

.arc-index {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-accent);
  letter-spacing: 0.05em;
}

.arc-stage {
  margin: 0 0 var(--space-1);
}

.arc-desc {
  color: var(--color-muted);
  font-size: var(--fs-sm);
  margin: 0;
}

@media (max-width: 40rem) {
  .arc-item {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }
}

/* =====================================================================
   Pull quote
   ===================================================================== */

.pull-quote {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  line-height: var(--lh-snug);
  font-weight: 600;
  max-width: 34rem;
  margin: 0 auto var(--space-6);
}

/* =====================================================================
   Case studies — work grid
   ===================================================================== */

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

@media (max-width: 40rem) {
  .case-grid {
    grid-template-columns: 1fr;
  }
}

.case-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}

.case-card h3 {
  margin-bottom: var(--space-2);
}

.case-card:hover h3 {
  color: var(--color-link);
}

.case-card p {
  color: var(--color-muted);
  font-size: var(--fs-sm);
  margin: 0 0 var(--space-4);
}

.case-card-stat {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

/* =====================================================================
   Case register — /work list of case studies
   ===================================================================== */

.case-register {
  border-top: 1px solid var(--color-hairline);
}

.case-row {
  display: grid;
  grid-template-columns: 3rem 1fr 15rem;
  gap: var(--space-6);
  align-items: baseline;
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-hairline);
  text-decoration: none;
  color: inherit;
  position: relative;
}

.case-row:hover .case-title {
  color: var(--color-link);
}

.case-row:hover::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-4));
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-accent);
}

.case-index {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-muted);
  align-self: start;
  padding-top: 0.3rem;
}

.case-row-live .case-index {
  color: var(--color-accent);
}

.case-body {
  min-width: 0;
}

.case-title {
  font-size: var(--fs-md);
  margin: 0 0 var(--space-2);
  transition: color var(--duration-fast) var(--ease-standard);
}

.case-summary {
  color: var(--color-muted);
  font-size: var(--fs-sm);
  margin: 0;
  max-width: 34rem;
}

.case-readout {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-accent);
  text-align: right;
  line-height: var(--lh-snug);
  align-self: start;
  padding-top: 0.35rem;
}

.case-stat-value {
  display: block;
  font-size: var(--fs-sm);
  color: var(--color-text);
  margin-bottom: 0.15rem;
}

@media (max-width: 40rem) {
  .case-row {
    grid-template-columns: 2rem 1fr;
  }

  .case-readout {
    grid-column: 2 / 3;
    text-align: left;
    padding-top: var(--space-2);
  }
}

/* =====================================================================
   Case study — detail page
   ===================================================================== */

.back-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-muted);
  text-decoration: none;
  margin-bottom: var(--space-8);
}

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

.stat-callout {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  border: 1px solid var(--color-hairline);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  margin-top: var(--space-8);
}

.stat-number {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 600;
  line-height: var(--lh-tight);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-muted);
  letter-spacing: 0.02em;
}

.cs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8) var(--space-12);
  align-items: start;
}

@media (max-width: 40rem) {
  .cs-grid {
    grid-template-columns: 1fr;
  }
}

.cs-section {
  border-top: 1px solid var(--color-hairline);
  padding-top: var(--space-6);
}

.cs-breakout {
  grid-column: 1 / -1;
}

.case-study-body h2 {
  font-size: var(--fs-xl);
  margin-top: 0;
}

.case-study-body p {
  margin: 0 0 var(--space-4);
}

.case-study-body code {
  word-break: break-word;
}

.case-study-body blockquote {
  max-width: var(--prose-width);
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
  font-weight: 600;
  margin: var(--space-4) 0;
  padding-left: var(--space-6);
  border-left: 3px solid var(--color-accent);
}

.case-study-body blockquote p {
  margin: 0;
}

.image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  aspect-ratio: 21 / 9;
  border: 1px dashed var(--color-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  margin: var(--space-4) 0;
  background: var(--color-surface);
}

.image-placeholder span {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-muted);
  max-width: 26rem;
}

.cs-image {
  margin: var(--space-4) 0;
}

.cs-image img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  cursor: zoom-in;
}

.cs-image-hint {
  margin: var(--space-2) 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-muted);
}

.img-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(9, 8, 6, 0.92);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease;
}

.img-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.img-lightbox-viewport {
  overflow: hidden;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.img-lightbox img {
  max-width: 92vw;
  max-height: 92vh;
  border-radius: var(--radius-md);
  cursor: zoom-in;
  transform-origin: center center;
  transition: transform 0.15s ease;
  user-select: none;
}

.img-lightbox img.is-zoomed {
  max-width: none;
  max-height: none;
  width: auto;
  cursor: grab;
}

.img-lightbox img.is-zoomed.is-panning {
  cursor: grabbing;
  transition: none;
}

.img-lightbox-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--fs-lg);
  line-height: 1;
  cursor: pointer;
}

.img-lightbox-hint {
  position: absolute;
  bottom: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-muted);
  white-space: nowrap;
}

/* =====================================================================
   Human / machine reading-mode toggle
   ===================================================================== */

.hm-toggle {
  display: inline-flex;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 2px;
  gap: 2px;
  margin-top: var(--space-4);
}

.hm-toggle-btn {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: var(--space-2) var(--space-4);
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
}

.hm-toggle-btn:hover {
  color: var(--color-text);
}

.hm-toggle-btn.is-active {
  background: var(--color-text);
  color: var(--color-text-on-accent);
}

.machine-view {
  display: none;
}

[data-reading-mode="machine"] .human-view {
  display: none;
}

[data-reading-mode="machine"] .machine-view {
  display: block;
}

.machine-view pre {
  max-width: var(--prose-width);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
  background: var(--color-surface);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-6);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

.context-artifact {
  max-width: var(--prose-width);
  border-left: 3px solid var(--color-accent);
  background: var(--color-surface);
  padding: var(--space-6);
  margin: var(--space-4) 0;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
}

.artifact-label {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 var(--space-4);
}

.context-artifact ul {
  margin: 0;
  padding-left: var(--space-4);
}

.context-artifact li {
  margin-bottom: var(--space-3);
}

.context-artifact li:last-child {
  margin-bottom: 0;
}

/* =====================================================================
   Live-site preview video
   ===================================================================== */

.site-preview {
  overflow: hidden;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
}

.site-preview-video {
  display: block;
  width: 100%;
  height: auto;
}

.site-preview-caption {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-muted);
}

/* =====================================================================
   Closing CTA
   ===================================================================== */

.closing-cta {
  text-align: center;
}

.closing-cta p {
  max-width: 34rem;
  margin-inline: auto;
}

/* =====================================================================
   Contact
   ===================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 18rem) minmax(0, 28rem);
  gap: var(--space-16);
}

@media (max-width: 56rem) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-details {
  margin: 0;
}

.contact-item {
  padding-block: var(--space-4);
  border-top: 1px solid var(--color-hairline);
}

.contact-item:last-child {
  border-bottom: 1px solid var(--color-hairline);
}

.contact-item dt {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-1);
}

.contact-item dd {
  margin: 0;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-field label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.form-field input,
.form-field textarea {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  transition: border-color var(--duration-fast) var(--ease-standard);
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--color-link);
  outline: none;
}

.form-field textarea {
  resize: vertical;
}

.contact-form .btn-primary {
  align-self: flex-start;
  border: none;
}

/* =====================================================================
   Support context demo — preset toggle
   ===================================================================== */

.demo-stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: var(--space-4) 0 var(--space-6);
}

.demo-stat-chip {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-muted);
  white-space: nowrap;
}

.demo-stat-chip strong {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
}

/* The note thread was the one artifact still capped to prose-width,
   which left it a tall narrow column with dead space beside it while
   the policy/tone row below used the full container. Letting it run
   full width and laying notes out two-up fixes the imbalance. */
.context-artifact--wide {
  max-width: none;
}

.demo-note-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 var(--space-8);
}

@media (max-width: 40rem) {
  .demo-note-grid {
    grid-template-columns: 1fr;
  }
}

/* Individual notes read as one run-on block without a visible seam
   between them; a rule plus tighter line-length gives each one its own
   shape instead of the whole thread reading as a single wall of text. */
.demo-note {
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4) !important;
  border-bottom: 1px solid var(--color-hairline);
}

.demo-note:last-child {
  padding-bottom: 0;
  margin-bottom: 0 !important;
  border-bottom: none;
}

.demo-note-meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  margin: 0 0 var(--space-2);
}

.demo-note-from {
  font-weight: 600;
  color: var(--color-text);
}

.demo-note-when {
  color: var(--color-muted);
  font-size: var(--fs-xs);
  white-space: nowrap;
}

.demo-note-body {
  margin: 0;
}

/* Clause comparison — current vs. proposed contract term, laid out
   two-up like the note grid so a two-clause set still fills the
   container width instead of sitting in a single narrow column. */
.demo-clause-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 var(--space-8);
}

@media (max-width: 40rem) {
  .demo-clause-grid {
    grid-template-columns: 1fr;
  }
}

.demo-clause {
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4) !important;
  border-bottom: 1px solid var(--color-hairline);
}

.demo-clause-grid .demo-clause:last-child {
  padding-bottom: 0;
  margin-bottom: 0 !important;
  border-bottom: none;
}

.demo-clause-name {
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-2);
}

.demo-clause-term {
  margin: 0 0 var(--space-2);
}

.demo-clause-term:last-child {
  margin-bottom: 0;
}

.demo-clause-tag {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-right: var(--space-2);
}

.demo-presets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.demo-preset-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  background: var(--color-surface);
  color: var(--color-muted);
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
}

.demo-preset-btn:hover {
  color: var(--color-text);
}

.demo-preset-btn.is-active {
  border-color: var(--color-accent);
  color: var(--color-text);
  background: var(--color-bg);
}

/* A row of small rotated squares standing in for "how much curation has
   been applied" — reuses the site's diamond/seam motif rather than a
   traffic-light red/amber/green, which would read as a scorecard. */
.demo-preset-meter {
  display: inline-flex;
  gap: 3px;
}

.demo-preset-dot {
  width: 5px;
  height: 5px;
  transform: rotate(45deg);
  background: var(--color-hairline);
}

.demo-preset-dot.is-filled {
  background: var(--color-accent);
}

.demo-preset-summary {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  margin: 0 0 var(--space-2);
  max-width: var(--prose-width);
}

.demo-hint {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-muted);
  margin: 0 0 var(--space-6);
}

.demo-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

@media (max-width: 40rem) {
  .demo-compare {
    grid-template-columns: 1fr;
  }
}

.demo-panel-label {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 var(--space-3);
}

.demo-brief-line,
.demo-response-span {
  cursor: default;
  border-radius: 2px;
  transition: background var(--duration-fast) var(--ease-standard), text-decoration-color var(--duration-fast) var(--ease-standard);
}

/* Pairable spans carry a permanent dashed underline so the affordance is
   visible before the visitor ever hovers — without it these read as plain
   text and the interaction goes undiscovered. */
.demo-brief-line[data-pair],
.demo-response-span[data-pair] {
  cursor: pointer;
  text-decoration: underline;
  text-decoration-style: dashed;
  text-decoration-color: color-mix(in srgb, var(--color-accent) 45%, transparent);
  text-underline-offset: 3px;
}

.demo-brief-line[data-pair]:hover,
.demo-brief-line[data-pair]:focus-visible,
.demo-brief-line.is-linked,
.demo-response-span[data-pair]:hover,
.demo-response-span[data-pair]:focus-visible,
.demo-response-span.is-linked {
  background: color-mix(in srgb, var(--color-accent) 18%, transparent);
  text-decoration-color: var(--color-accent);
}

.demo-response-span.is-gap {
  text-decoration-color: color-mix(in srgb, var(--color-accent) 55%, transparent);
}

.demo-response-span.is-gap.is-linked {
  background: color-mix(in srgb, var(--color-accent) 14%, transparent);
  text-decoration-color: var(--color-accent);
}

.demo-gap-list {
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.demo-gap-item {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-muted);
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
}

.demo-gap-item:hover,
.demo-gap-item:focus-visible,
.demo-gap-item.is-linked {
  border-color: var(--color-accent);
  color: var(--color-text);
  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
}

/* Pulls the "Root cause / Recommended action" close of an audit brief
   response out of the flowing paragraph into its own callout, so the
   outcome is scannable instead of buried as the last clause of a long
   sentence. */
.demo-verdict {
  margin: var(--space-3) 0 0;
  border-left: 3px solid var(--color-accent);
  background: var(--color-surface);
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
}

.demo-critique {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-hairline);
  font-size: var(--fs-sm);
  color: var(--color-muted);
}

/* =====================================================================
   Context Brief Grader (/tools/context-brief-grader)
   ===================================================================== */

.grader-honesty {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  border-left: 2px solid var(--color-accent);
  padding-left: var(--space-4);
  margin-bottom: var(--space-8);
}

#grader-root .form-field {
  margin-bottom: var(--space-4);
}

#grader-root textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  resize: vertical;
  transition: border-color var(--duration-fast) var(--ease-standard);
}

#grader-root textarea:focus {
  border-color: var(--color-link);
  outline: none;
}

.grader-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.grader-loading {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-muted);
  margin-top: var(--space-6);
}

.grader-results {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

@media (max-width: 40rem) {
  .grader-results {
    grid-template-columns: 1fr;
  }
}

.grader-card {
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.grader-card-status {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-2);
}

.grader-card h3 {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: 600;
  margin: 0 0 var(--space-2);
}

.grader-card p {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  margin: 0 0 var(--space-2);
}

.grader-card-excerpt {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text);
  background: var(--color-bg);
  border-left: 2px solid var(--color-hairline);
  padding: var(--space-2) var(--space-3);
  margin: 0;
}

/* Status coding reuses the site's two accent colors rather than
   introducing red/green: link (indigo) reads as confirmed, accent (brass)
   as needs-attention, with weight distinguishing warn from fail. */
.grader-card.is-pass {
  border-color: var(--color-link);
}

.grader-card.is-pass .grader-card-status {
  color: var(--color-link);
}

.grader-card.is-warn {
  border-color: var(--color-accent);
}

.grader-card.is-warn .grader-card-status {
  color: var(--color-accent);
}

.grader-card.is-fail {
  border-color: var(--color-accent);
  border-width: 2px;
  background: color-mix(in srgb, var(--color-accent) 6%, var(--color-surface));
}

.grader-card.is-fail .grader-card-status {
  color: var(--color-accent);
  font-weight: 700;
}

.grader-card.is-n-a {
  border-style: dashed;
  opacity: 0.85;
}

/* =====================================================================
   Homepage hero curation widget
   ===================================================================== */

.hero-curate-widget {
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.hero-curate-text {
  font-size: var(--fs-md);
  line-height: var(--lh-normal);
  margin: var(--space-3) 0 var(--space-4);
}

.hero-curate-frag {
  transition: opacity var(--duration-standard) var(--ease-standard),
    text-decoration-color var(--duration-standard) var(--ease-standard);
}

.hero-curate-frag[data-keep="false"] {
  opacity: 1;
}

.hero-curate-widget.is-curated .hero-curate-frag[data-keep="false"] {
  opacity: 0.35;
  text-decoration: line-through;
  text-decoration-color: var(--color-muted);
}

.hero-curate-widget.is-curated .hero-curate-frag[data-keep="true"] {
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
}

.hero-curate-btn {
  margin-top: var(--space-2);
}

.hero-curate-notes {
  border-top: 1px solid var(--color-hairline);
  padding-top: var(--space-3);
  margin-top: var(--space-3);
  display: grid;
  gap: var(--space-2);
}

.hero-curate-hint {
  margin-bottom: 0;
}

@media (prefers-reduced-motion: reduce) {
  .hero-curate-frag {
    transition: none;
  }
}

/* =====================================================================
   Context Design model diagram (context-spectrum-demo)
   ===================================================================== */

.context-model {
  display: flex;
  align-items: stretch;
  gap: var(--space-4);
  margin: var(--space-6) 0;
}

.context-model-node {
  flex: 1;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.context-model-node--core {
  border-color: var(--color-accent);
  border-width: 2px;
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-surface));
}

.context-model-node-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  line-height: var(--lh-normal);
  color: var(--color-muted);
}

.context-model-node--core .context-model-node-label {
  color: var(--color-text);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.context-model-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: var(--fs-md);
  flex-shrink: 0;
}

.context-model-caption {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-muted);
  max-width: var(--prose-width);
}

@media (max-width: 48rem) {
  .context-model {
    flex-direction: column;
  }

  .context-model-arrow {
    transform: rotate(90deg);
  }
}