/*
 * Project case-study system
 * Shared with every project page so the work reads as one portfolio.
 */

:root {
  color-scheme: light;
  --case-accent: oklch(0.58 0.19 285);
  --case-accent-strong: oklch(0.48 0.2 285);
  --case-accent-soft: oklch(0.95 0.035 285);
  --case-page: oklch(0.975 0.008 285);
  --case-surface: oklch(0.995 0.004 285);
  --case-surface-subtle: oklch(0.965 0.012 285);
  --case-ink: oklch(0.24 0.018 270);
  --case-ink-soft: oklch(0.43 0.018 270);
  --case-ink-faint: oklch(0.57 0.018 270);
  --case-rule: oklch(0.88 0.018 285);
  --case-code: oklch(0.22 0.018 270);
  --case-code-ink: oklch(0.92 0.012 270);
  --case-radius: 14px;
  --case-content: 68ch;
  --case-wide: 1120px;

  --accent-primary: var(--case-accent);
  --accent-light: var(--case-accent-soft);
  --accent-medium: oklch(0.89 0.065 285);
  --accent-dark: var(--case-accent-strong);
  --text-primary: var(--case-ink);
  --text-secondary: var(--case-ink-soft);
  --text-tertiary: var(--case-ink-faint);
  --bg-color: var(--case-page);
  --bg-gradient: var(--case-page);
  --card-bg: var(--case-surface);
  --card-border: var(--case-rule);
  --card-shadow: none;
  --button-shadow: none;
  --section-spacing: clamp(4rem, 7vw, 6.5rem);
  --subsection-spacing: clamp(2rem, 4vw, 3.5rem);
}

html.dark,
body.dark,
.dark {
  color-scheme: dark;
  --case-accent: oklch(0.72 0.15 285);
  --case-accent-strong: oklch(0.79 0.12 285);
  --case-accent-soft: oklch(0.28 0.055 285);
  --case-page: oklch(0.16 0.018 270);
  --case-surface: oklch(0.2 0.02 270);
  --case-surface-subtle: oklch(0.23 0.025 275);
  --case-ink: oklch(0.94 0.012 270);
  --case-ink-soft: oklch(0.79 0.018 270);
  --case-ink-faint: oklch(0.65 0.022 270);
  --case-rule: oklch(0.32 0.025 280);
  --case-code: oklch(0.12 0.018 270);
  --case-code-ink: oklch(0.9 0.015 270);
}

html {
  background: var(--case-page);
  scroll-behavior: smooth;
}

body {
  min-height: 100dvh;
  margin: 0;
  padding: clamp(4.75rem, 8vw, 6.5rem) clamp(1.25rem, 4vw, 3.5rem) 5rem;
  overflow-x: clip;
  background: var(--case-page) !important;
  color: var(--case-ink);
  font-family: "Open Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.72;
  transition: background-color 180ms ease, color 180ms ease;
}

a {
  color: var(--case-accent-strong);
  text-underline-offset: 0.2em;
}

.dark a {
  color: var(--case-accent);
}

.scroll-progress {
  display: none !important;
}

.project-container,
.container {
  width: min(100%, var(--case-wide));
  max-width: var(--case-wide) !important;
  margin-inline: auto;
  padding-inline: 0 !important;
}

body > header,
.project-container > header.section-card {
  width: min(100%, var(--case-wide));
  max-width: var(--case-wide);
  margin: 0 auto clamp(3.5rem, 7vw, 6rem) !important;
  padding: 0 0 clamp(2.25rem, 4vw, 3.25rem) !important;
  border: 0 !important;
  border-bottom: 1px solid var(--case-rule) !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  color: var(--case-ink);
  text-align: left !important;
  transform: none !important;
}

body > header > .container {
  margin: 0;
}

body > header:hover,
.project-container > header.section-card:hover {
  background: transparent !important;
  box-shadow: none !important;
  transform: none !important;
}

header nav {
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem) !important;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  color: var(--case-ink-soft);
  font-size: 0.84rem;
  font-weight: 600;
  text-decoration: none;
  transition: color 160ms ease;
}

.back-link:hover {
  background: transparent !important;
  color: var(--case-accent-strong);
  transform: none !important;
}

.theme-toggle,
.back-button {
  position: fixed;
  top: max(1rem, env(safe-area-inset-top));
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border: 1px solid var(--case-rule);
  border-radius: 50%;
  background: var(--case-surface);
  box-shadow: none;
  color: var(--case-ink);
  cursor: pointer;
  text-decoration: none;
  transition: border-color 160ms ease, color 160ms ease, background-color 160ms ease, transform 120ms ease;
  z-index: 20;
}

.theme-toggle {
  right: max(1rem, env(safe-area-inset-right));
}

.back-button {
  left: max(1rem, env(safe-area-inset-left));
}

.theme-toggle:hover,
.back-button:hover {
  border-color: var(--case-accent);
  background: var(--case-surface-subtle);
  color: var(--case-accent-strong);
  transform: none;
}

.theme-toggle:active,
.back-button:active,
.github-button:active {
  transform: translateY(1px);
}

.theme-toggle:focus-visible,
.back-button:focus-visible,
.back-link:focus-visible,
.github-button:focus-visible {
  outline: 3px solid color-mix(in oklch, var(--case-accent) 38%, transparent);
  outline-offset: 3px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  max-width: 26ch;
  margin-top: 0;
  color: var(--case-ink) !important;
  font-family: "Lato", system-ui, sans-serif;
  text-wrap: balance;
}

h1,
h1[style] {
  max-width: 18ch;
  margin: 0 !important;
  color: var(--case-ink) !important;
  font-size: clamp(2.45rem, 7vw, 4.6rem) !important;
  font-weight: 700 !important;
  line-height: 1.02 !important;
  letter-spacing: -0.045em;
}

h2,
h2[style] {
  margin: 0 0 1.35rem !important;
  padding-bottom: 0 !important;
  border: 0 !important;
  color: var(--case-ink) !important;
  font-size: clamp(1.65rem, 3.3vw, 2.35rem) !important;
  font-weight: 700 !important;
  line-height: 1.12 !important;
  letter-spacing: -0.03em;
}

h3,
h3[style] {
  margin: 0 0 0.7rem !important;
  color: var(--case-ink) !important;
  font-size: clamp(1.1rem, 2vw, 1.3rem) !important;
  font-weight: 700 !important;
  line-height: 1.3 !important;
  letter-spacing: -0.018em;
}

h4 {
  margin: 0 0 0.6rem;
  color: var(--case-ink) !important;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
}

p,
li,
td,
th {
  color: var(--case-ink-soft);
}

p {
  max-width: var(--case-content);
  margin: 0 0 1.2rem;
}

p:last-child {
  margin-bottom: 0;
}

strong {
  color: var(--case-ink);
  font-weight: 700;
}

header > p,
header .intro-text,
.project-container > header > p {
  max-width: 60ch;
  margin: 1.25rem 0 0 !important;
  color: var(--case-ink-soft) !important;
  font-size: clamp(1rem, 1.5vw, 1.16rem) !important;
  line-height: 1.65 !important;
}

header .skill-badges,
header .tools-used {
  justify-content: flex-start !important;
}

.header-eyebrow {
  margin-bottom: 1rem;
  color: var(--case-ink-faint);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: none;
}

.accent {
  color: inherit !important;
}

main {
  display: block;
}

.section,
main > .section-card,
main > section.section-card {
  margin: 0 0 var(--section-spacing) !important;
  padding: clamp(2rem, 4vw, 3rem) 0 0 !important;
  border: 0 !important;
  border-top: 1px solid var(--case-rule) !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  transform: none !important;
}

.section-card:hover,
.card:hover {
  background: transparent;
  box-shadow: none;
  transform: none;
}

.section > .card,
.section > .conclusion-card,
.overview-section > .section-card,
.demo-section > .section-card,
.app-info.section-card {
  margin: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

.overview-section,
.demo-section {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(19rem, 0.92fr);
  align-items: start;
  gap: clamp(2rem, 5vw, 4.5rem);
  margin: 0 0 var(--section-spacing);
}

.overview-section > * {
  min-width: 0;
}

.project-media,
.image-container img,
.screenshot img,
.gallery-item img,
.comparison-gallery img {
  border: 1px solid var(--case-rule);
  border-radius: var(--case-radius) !important;
  background: var(--case-surface-subtle);
  box-shadow: none !important;
}

.project-media {
  overflow: hidden;
  transform: none !important;
}

.project-media:hover {
  box-shadow: none !important;
  transform: none !important;
}

.project-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transform: none !important;
}

.image-container {
  margin: clamp(2rem, 4vw, 3.5rem) 0;
  text-align: left;
}

.image-container img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 42rem;
  margin: 0 auto;
  object-fit: contain;
}

.demo-full-bleed {
  width: min(100%, var(--case-wide)) !important;
  margin: 0 auto var(--section-spacing) !important;
  padding: 0 !important;
}

.demo-inner {
  max-width: none !important;
  margin: 0 !important;
}

.demo-inner img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--case-rule);
  border-radius: var(--case-radius);
  background: var(--case-surface-subtle);
}

.caption,
.gallery-caption,
.screenshot p {
  max-width: 60ch;
  margin: 0.7rem auto 0 !important;
  color: var(--case-ink-faint) !important;
  font-size: 0.78rem !important;
  line-height: 1.55 !important;
  text-align: left !important;
}

.project-badges,
.skill-badges,
.tech-stack,
.tools-used {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.6rem 0 0;
}

.project-badge,
.skill-badge,
.tech-item,
.tool-badge,
.priority-badge,
.example-mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0 !important;
  padding: 0.38rem 0.62rem !important;
  border: 1px solid var(--case-rule) !important;
  border-radius: 7px !important;
  background: transparent !important;
  box-shadow: none !important;
  color: var(--case-ink-soft) !important;
  font-size: 0.73rem !important;
  font-weight: 650 !important;
  letter-spacing: 0;
  text-transform: none;
  transform: none !important;
}

.project-badge:hover,
.skill-badge:hover,
.tech-item:hover,
.tool-badge:hover {
  border-color: var(--case-accent) !important;
  background: var(--case-accent-soft) !important;
  color: var(--case-ink) !important;
  transform: none !important;
}

.feature-icon,
.outcome-icon {
  margin-bottom: 0.85rem;
  color: var(--case-accent-strong);
  font-size: 1rem;
}

.features-grid,
.algorithm-grid,
.algorithm-comparison,
.architecture-comparison,
.results-grid,
.modes-grid,
.outcomes-grid,
.grid-2,
.two-column,
.dataset-comparison,
.activation-comparison,
.examples-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  gap: 1rem !important;
  margin: 1.75rem 0 0;
}

.features-grid > :nth-child(3n),
.algorithm-grid > :last-child:nth-child(odd),
.outcomes-grid > :last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.feature-card,
.algorithm-card,
.architecture-card,
.result-card,
.dataset-card,
.mode-card,
.outcome-card,
.persona-card,
.version-card,
.fork-card,
.example-card,
.grid-2 > .card,
.two-column > .card,
main [style*="border-left"] {
  margin: 0 !important;
  padding: clamp(1.2rem, 2.5vw, 1.6rem) !important;
  border: 1px solid var(--case-rule) !important;
  border-radius: var(--case-radius) !important;
  background: var(--case-surface) !important;
  box-shadow: none !important;
  transform: none !important;
}

.feature-card:hover,
.algorithm-card:hover,
.architecture-card:hover,
.result-card:hover,
.dataset-card:hover,
.mode-card:hover,
.outcome-card:hover,
.persona-card:hover,
.version-card:hover,
.fork-card:hover,
.example-card:hover {
  border-color: color-mix(in oklch, var(--case-accent) 40%, var(--case-rule)) !important;
  box-shadow: none !important;
  transform: none !important;
}

.feature-description,
.pipeline-desc,
.mode-desc,
.outcome-desc {
  margin: 0;
  color: var(--case-ink-soft);
  font-size: 0.9rem;
  line-height: 1.65;
}

.list-item {
  display: grid;
  grid-template-columns: 0.65rem minmax(0, 1fr);
  align-items: start;
  gap: 0.45rem;
  max-width: var(--case-content);
  padding: 0.34rem 0;
  color: var(--case-ink-soft);
}

.list-item::before {
  content: "•";
  margin: 0.04rem 0 0;
  color: var(--case-accent);
  font-weight: 700;
}

ul,
ol {
  max-width: var(--case-content);
  margin: 1rem 0 1.5rem;
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.45rem;
  padding-left: 0.2rem;
}

li::marker {
  color: var(--case-accent);
}

.highlight-box,
.findings-card,
.conclusion-box,
.inspiration-section {
  max-width: var(--case-content);
  margin: 1.75rem 0 !important;
  padding: clamp(1.15rem, 2.5vw, 1.5rem) !important;
  border: 1px solid color-mix(in oklch, var(--case-accent) 28%, var(--case-rule)) !important;
  border-radius: var(--case-radius) !important;
  background: var(--case-accent-soft) !important;
  box-shadow: none !important;
  color: var(--case-ink);
}

.highlight-box::before,
.inspiration-section::before {
  display: none;
}

.github-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  margin-top: 1.5rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--case-accent-strong);
  border-radius: 9px;
  background: var(--case-accent-strong);
  box-shadow: none;
  color: oklch(0.98 0.004 285);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease, transform 120ms ease;
}

.github-button:hover {
  border-color: var(--case-ink);
  background: var(--case-ink);
  box-shadow: none;
  color: var(--case-surface);
  transform: none;
}

.pipeline {
  margin: 2rem 0 0;
}

.pipeline-step {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 1rem;
}

.pipeline-connector {
  display: flex;
  width: 2rem;
  flex-direction: column;
  align-items: center;
}

.pipeline-dot,
.step-number {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 1px solid var(--case-rule);
  border-radius: 7px;
  background: var(--case-surface);
  box-shadow: none;
  color: var(--case-ink);
  font-size: 0.72rem;
  font-weight: 700;
}

.pipeline-line,
.process-step:not(:last-child)::after {
  width: 1px;
  background: var(--case-rule);
}

.pipeline-body {
  padding-bottom: 2rem;
}

.pipeline-title {
  padding-top: 0.25rem;
  color: var(--case-ink);
  font-weight: 700;
}

.process-step {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.step-number {
  margin: 0;
}

.step-content {
  padding-top: 0.2rem;
}

.timeline {
  margin-top: 1.5rem;
}

.timeline::before,
.timeline-item::before {
  display: none !important;
}

.timeline-item {
  display: grid !important;
  grid-template-columns: minmax(5.75rem, 0.23fr) minmax(0, 1fr);
  gap: 1.25rem;
  margin: 0 !important;
  padding: 1rem 0 !important;
  border-bottom: 1px solid var(--case-rule);
}

.timeline-item:last-child {
  border-bottom: 0;
}

.timeline-date {
  position: static !important;
  width: auto !important;
  color: var(--case-ink-faint) !important;
  font-size: 0.75rem;
  font-weight: 700;
}

.persona-header {
  border-bottom: 1px solid var(--case-rule) !important;
  background: var(--case-surface-subtle) !important;
  color: var(--case-ink) !important;
}

.timeline-content {
  padding: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

.screenshot-gallery,
.image-gallery,
.comparison-gallery {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.screenshot,
.gallery-item {
  grid-column: span 6;
  overflow: visible;
  padding: 0 !important;
  border: 0;
  border-radius: 0;
  background: transparent !important;
  box-shadow: none !important;
  transform: none !important;
}

.screenshot:first-child,
.gallery-item:first-child {
  grid-column: 1 / -1;
}

.screenshot:hover,
.gallery-item:hover {
  box-shadow: none !important;
  transform: none !important;
}

.valet-screenshot-row {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: start;
  gap: 0.75rem;
}

.valet-screenshot-row .screenshot,
.valet-screenshot-row .screenshot:first-child {
  grid-column: auto;
  min-width: 0;
}

.valet-screenshot-row .screenshot p {
  margin: 0.65rem 0 0 !important;
  color: var(--case-ink-faint) !important;
  font-size: 0.76rem !important;
  line-height: 1.4 !important;
  text-align: left !important;
}

.tech-table,
.priority-table,
.comparison-table {
  width: 100%;
  margin: 1.75rem 0;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.tech-table th,
.priority-table th,
.comparison-table th {
  padding: 0.75rem 0.9rem;
  border: 0;
  border-bottom: 1px solid var(--case-rule);
  background: transparent;
  color: var(--case-ink);
  font-weight: 700;
  text-align: left;
}

.tech-table td,
.priority-table td,
.comparison-table td {
  padding: 0.75rem 0.9rem;
  border: 0;
  border-bottom: 1px solid var(--case-rule);
  color: var(--case-ink-soft);
  vertical-align: top;
}

.tech-table tr:last-child td,
.priority-table tr:last-child td,
.comparison-table tr:last-child td {
  border-bottom: 0;
}

.tech-table tr:hover td,
.priority-table tr:hover td,
.comparison-table tr:hover td {
  background: var(--case-surface-subtle);
}

pre,
.code-block {
  max-width: 100%;
  margin: 1.5rem 0;
  padding: clamp(1rem, 2vw, 1.35rem);
  overflow-x: auto;
  border: 1px solid var(--case-rule);
  border-radius: 10px;
  background: var(--case-code) !important;
  color: var(--case-code-ink);
  box-shadow: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.65;
}

pre code,
.code-block .code-line {
  color: var(--case-code-ink);
  font-family: inherit;
}

code:not(pre code) {
  padding: 0.14rem 0.36rem;
  border: 1px solid var(--case-rule);
  border-radius: 5px;
  background: var(--case-surface-subtle);
  color: var(--case-ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86em;
}

.accuracy-bar {
  height: 4px !important;
  border: 0 !important;
  background: transparent !important;
}

.accuracy-fill {
  height: 4px !important;
  border-radius: 2px !important;
}

.equation-box {
  max-width: var(--case-content);
  overflow-x: auto;
}

.iphone-mockup,
.mockup-shadow {
  display: none !important;
}

footer {
  width: min(100%, var(--case-wide));
  margin: 4rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--case-rule);
  color: var(--case-ink-faint);
  font-size: 0.78rem;
}

@media (max-width: 760px) {
  body {
    padding: 4.5rem 1rem 3rem !important;
    font-size: 0.96rem;
  }

  .theme-toggle,
  .back-button {
    position: absolute !important;
    top: max(0.8rem, env(safe-area-inset-top)) !important;
    width: 2.5rem !important;
    height: 2.5rem !important;
  }

  .project-container,
  .container {
    width: 100%;
    padding-inline: 0 !important;
  }

  body > header,
  .project-container > header.section-card {
    margin-bottom: 3.5rem !important;
    padding-bottom: 2rem !important;
  }

  header nav {
    margin-bottom: 2.75rem !important;
  }

  h1,
  h1[style] {
    max-width: 12ch;
    font-size: clamp(2.25rem, 12vw, 3.25rem) !important;
  }

  h2,
  h2[style] {
    font-size: clamp(1.55rem, 7vw, 1.95rem) !important;
  }

  .section,
  main > .section-card,
  main > section.section-card {
    margin-bottom: 4.25rem !important;
    padding-top: 1.75rem !important;
  }

  .overview-section,
  .demo-section,
  .features-grid,
  .algorithm-grid,
  .algorithm-comparison,
  .architecture-comparison,
  .results-grid,
  .modes-grid,
  .outcomes-grid,
  .grid-2,
  .two-column,
  .dataset-comparison,
  .activation-comparison,
  .examples-grid,
  .pipeline-fork,
  .version-comparison,
  main [style*="grid-template-columns"] {
    grid-template-columns: minmax(0, 1fr) !important;
  }

  .features-grid > *,
  .algorithm-grid > *,
  .outcomes-grid > * {
    grid-column: auto !important;
  }

  .overview-section {
    margin-bottom: 4.5rem;
  }

  .screenshot,
  .gallery-item {
    grid-column: 1 / -1;
  }

  .valet-screenshot-row {
    grid-template-columns: none !important;
    grid-auto-flow: column;
    grid-auto-columns: minmax(9.5rem, 42vw);
    gap: 0.75rem;
    padding-bottom: 0.75rem;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-snap-type: inline mandatory;
    scrollbar-width: thin;
  }

  .valet-screenshot-row .screenshot {
    grid-column: auto !important;
    scroll-snap-align: start;
  }

  .timeline-item {
    grid-template-columns: 1fr !important;
    gap: 0.25rem;
  }

  .timeline-date {
    text-align: left !important;
  }

  .table-wrap,
  table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
  }

  .github-button {
    max-width: 100%;
    white-space: nowrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}