/* ============================================
   Project Page Styles
   Matches the Pencil design system mockups
   ============================================ */

:root {
  --color-bg:        #FFFFFF;
  --color-text:      #111111;
  --color-muted:     #666666;
  --color-accent:    #C8FF00;
  --color-border:    #CBCCC9;
  --color-card:      #FFFFFF;
  --color-secondary: #E7E8E5;

  --font-display:    'Instrument Sans', sans-serif;
  --font-body:       'Instrument Sans', sans-serif;
  --font-mono:       'VCR OSD Mono', monospace;
  --font-code:       'JetBrains Mono', monospace;

  --page-padding:    60px;

  /* Per-case-study color theme (Material 3–inspired roles).
     Fallbacks only — each project page defines its own values
     in a <style> block in <head>. See that block to retint a page. */
  --project-primary:              var(--color-accent);
  --project-on-primary:           var(--color-text);
  --project-primary-container:    var(--color-secondary);
  --project-on-primary-container: var(--color-text);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-text);
  text-decoration: none;
  cursor: none; /* custom cursor (hover_cursor.js) takes over */
}

/* Random walker background */
#walker-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

#walker-container canvas {
  display: block;
}

/* ============================================
   Accessibility (WCAG 2.2 AA)
   ============================================ */
/* Visible keyboard focus — dark ring, 3:1+ against every background here */
:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

/* <picture> wrappers (reduced-motion stills for GIFs) shouldn't affect layout */
picture {
  display: contents;
}

/* Skip link — hidden until focused with the keyboard */
.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 10000;
  padding: 10px 16px;
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-display);
  font-size: 15px;
}

.skip-link:focus {
  top: 16px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================
   Navigation
   ============================================ */
header {
  position: relative;
  z-index: 10;
  padding: 31px 30px;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: normal;
  color: var(--color-text);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--color-text);
  text-decoration: none;
  transition: opacity 0.3s;
}

.nav-links a:hover {
  opacity: 0.5;
}

/* ============================================
   Project Page Container
   ============================================ */
.project-page {
  position: relative;
  z-index: 1;
  background: #FFFFFF;
}

/* ============================================
   Hero Section
   ============================================ */
.project-hero {
  margin-bottom: 0;
}

.project-hero__image-wrap {
  position: relative;
  width: 100%;
  height: clamp(300px, 50vw, 520px);
  overflow: hidden;
  cursor: none;
}

.project-hero__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-hero__title-overlay {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 32px var(--page-padding);
  max-width: calc(600px + var(--page-padding) * 2);
}

.project-hero__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--color-text);
}

.project-hero__name {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1;
  margin: 0;
}

.project-hero__tagline {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 400;
  color: var(--color-muted); /* was rgba(0,0,0,.4) — 5.7:1, WCAG AA */
  margin: 0;
}

/* Divider */
.project-hero__divider {
  width: calc(100% - var(--page-padding) * 2);
  height: 1px;
  background: rgba(0, 0, 0, 0.1);
  margin: 0 var(--page-padding);
}

/* Meta Bar */
.project-hero__meta {
  display: flex;
  gap: 0;
  padding: 24px var(--page-padding);
}

.meta-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.meta-item__label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2.5px;
  color: var(--color-muted); /* was rgba(0,0,0,.4) — 5.7:1, WCAG AA */
}

.meta-item__value {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.6;
}

/* Overview Section */
.project-hero__overview {
  display: flex;
  gap: 80px;
  padding: 40px var(--page-padding) var(--page-padding);
}

.overview-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.overview-col:first-child {
  width: 460px;
  flex-shrink: 0;
}

.overview-col:last-child {
  flex: 1;
}

.overview-col__label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2.5px;
  color: var(--color-muted); /* was rgba(0,0,0,.4) — 5.7:1, WCAG AA */
}

.overview-col__text {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 400;
  color: rgba(0, 0, 0, 0.8);
  line-height: 1.7;
  margin: 0;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  padding: 10px 20px;
  border: 1px solid var(--color-text);
  background: transparent;
  color: var(--color-text);
  text-decoration: none;
  cursor: none; /* custom cursor (hover_cursor.js) takes over */
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.btn-accent {
  border-color: var(--project-primary);
  color: var(--color-text);
}

.btn-accent:hover {
  background: var(--project-primary);
  color: var(--project-on-primary);
}

.btn-sm {
  font-size: 0.75rem;
  padding: 6px 14px;
}

/* ============================================
   Content Sections
   ============================================ */
.project-content {
  padding: 80px 0 var(--page-padding);
}

/* Content Label */
.content-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--color-text);
  margin-bottom: 24px;
}

/* Content section with text + image */
.content-section {
  padding: 0 var(--page-padding);
  margin-bottom: 0;
}

.content-columns {
  display: flex;
  gap: 48px;
}

.content-text {
  flex: 1;
}

.content-text p {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--color-text);
  line-height: 1.65;
}

.content-text p + p {
  margin-top: 1em;
}

.content-image {
  flex: 1;
  overflow: hidden;
}

.content-image img,
.content-image video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Frosted glass accent */
.frosted-accent {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(4.6px);
  -webkit-backdrop-filter: blur(4.6px);
}

/* ============================================
   Video Embed
   ============================================ */
.video-embed {
  padding: 0 var(--page-padding);
}

.video-embed iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
}

/* ============================================
   Dot Separator
   ============================================ */
.dot-separator {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 64px;
}

.dot {
  display: block;
  width: 25px;
  height: 25px;
  background: var(--project-primary);
  border-radius: 50%;
}

/* ============================================
   Image Gallery
   ============================================ */
.image-gallery {
  display: flex;
  gap: 8px;
  padding: 0 20px;
  height: clamp(200px, 30vw, 360px);
}

.gallery-img {
  flex: 1;
  overflow: hidden;
}

.gallery-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================
   Media Grid — many mixed-aspect images (process
   photos, sketchbook, slides). Masonry via CSS
   columns so portrait and landscape both keep
   their shape.
   ============================================ */
.media-grid {
  columns: 3 280px;
  column-gap: 8px;
  padding: 0 20px;
  margin-bottom: 48px;
}

.media-grid:last-of-type {
  margin-bottom: 0;
}

.media-grid__item {
  break-inside: avoid;
  margin: 0 0 8px;
}

.media-grid__item img {
  width: 100%;
  height: auto;
}

/* Reading-order variant for sequences where order matters (e.g. a slide
   narrative): a regular grid fills left→right instead of down columns */
.media-grid--rows {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 8px;
  align-items: start;
}

.media-grid--rows .media-grid__item {
  margin: 0;
}

/* ============================================
   Key Outcomes / Stats
   ============================================ */
.key-outcomes {
  display: flex;
  justify-content: center;
  gap: 24px;
  padding: 40px var(--page-padding);
}

.stat {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.stat__number {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  color: var(--color-text);
}

.stat__label {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 2px;
  color: var(--color-muted); /* was rgba(0,0,0,.5) — 5.7:1, WCAG AA */
  text-transform: uppercase;
}

/* ============================================
   UX Case Study components (cs-*)
   Structure for the UX/UI case studies (ConHéctor,
   MagicBands, UAL): snapshot → toolkit → process →
   research → decisions → prototype → outcomes →
   learnings. See projects/template-ux.html.
   ============================================ */
.cs-section {
  padding: 0 var(--page-padding);
}

.cs-section__intro {
  max-width: 720px;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.65;
  margin-bottom: 32px;
}

.cs-section__intro + .cs-section__intro {
  margin-top: -16px;
}

/* Snapshot — problem / role / outcome at a glance */
.cs-snapshot {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 40px var(--page-padding) var(--page-padding);
}

.cs-snapshot__item {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 16px;
  border-top: 2px solid var(--project-primary);
}

.cs-snapshot__label,
.cs-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2.5px;
  color: var(--color-muted); /* was rgba(0,0,0,.4) — 5.7:1, WCAG AA */
}

.cs-snapshot__text {
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.6;
  color: rgba(0, 0, 0, 0.8);
}

/* Toolkit — methods / tools / tech as chips */
.cs-toolkit {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cs-toolkit__group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cs-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
}

.cs-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--project-primary-container);
  color: var(--project-on-primary-container);
}

/* Process — phase strip */
.cs-process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  list-style: none;
  counter-reset: cs-step;
}

.cs-process__step {
  counter-increment: cs-step;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: var(--color-secondary);
  border-radius: 4px;
}

.cs-process__step::before {
  content: counter(cs-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--project-primary);
}

.cs-process__name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
}

.cs-process__text {
  font-family: var(--font-display);
  font-size: 14px;
  line-height: 1.55;
  color: rgba(0, 0, 0, 0.7);
}

/* Callout — the "How might we…" question */
.cs-callout {
  margin-top: 24px;
  padding: 20px 24px;
  border-left: 4px solid var(--project-primary);
  background: var(--project-primary-container);
  color: var(--project-on-primary-container);
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  line-height: 1.45;
}

/* Cards — numbered insights / decisions */
.cs-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  list-style: none;
  counter-reset: cs-card;
}

.cs-card {
  counter-increment: cs-card;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-card);
}

.cs-card::before {
  content: counter(cs-card, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--project-primary);
}

.cs-card__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.35;
}

.cs-card p {
  font-family: var(--font-display);
  font-size: 15px;
  line-height: 1.6;
  color: rgba(0, 0, 0, 0.8);
}

.cs-card__tradeoff {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--color-border);
  font-size: 14px !important;
  color: rgba(0, 0, 0, 0.6) !important;
}

.cs-card__tradeoff strong {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.5px;
  color: var(--color-text);
}

/* Learnings — two columns */
.cs-learnings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.cs-learnings__col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cs-learnings__col p {
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.65;
}

.cs-gallery {
  margin-top: 32px;
}

.cs-source {
  padding: 0 var(--page-padding);
  text-align: center;
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--color-muted); /* was rgba(0,0,0,.45) — 5.7:1, WCAG AA */
}

/* Draft-only: marks content Ceci still needs to confirm.
   Must not ship — remove every .cs-todo before publishing. */
.cs-todo {
  padding: 12px 16px;
  border: 2px dashed var(--color-destructive, #FF5C33);
  border-radius: 4px;
  background: rgba(255, 92, 51, 0.06);
  font-family: var(--font-display);
  font-size: 14px;
  line-height: 1.5;
  color: #7A2A15;
}

.cs-todo::before {
  content: 'TO CONFIRM · ';
  font-family: var(--font-mono);
  letter-spacing: 1.5px;
}

/* ============================================
   Next Project Navigation
   ============================================ */
.next-project {
  padding: 0 var(--page-padding);
}

.next-project__divider {
  width: 100%;
  height: 1px;
  background: rgba(0, 0, 0, 0.1);
}

.next-project__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
}

.next-project__info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.next-project__label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 3px;
  color: var(--color-muted); /* was rgba(0,0,0,.5) — 5.7:1, WCAG AA */
}

.next-project__name {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
}

.next-project__subtitle {
  display: none;
}

.next-project__arrow {
  font-size: 32px;
  color: var(--project-primary);
}

a.next-project__link {
  text-decoration: none;
  color: var(--color-text);
  transition: opacity 0.3s;
}

a.next-project__link:hover {
  opacity: 0.6;
}

/* ============================================
   Footer
   ============================================ */
footer {
  padding: var(--page-padding);
  text-align: center;
  font-size: 13px;
  color: var(--color-muted);
}

/* ============================================
   Responsive — matches mobile_project_hero/content
   mockups (390px reference)
   ============================================ */
@media (max-width: 768px) {
  :root {
    --page-padding: 24px;
  }

  header {
    padding: 20px;
  }

  .logo {
    font-size: 14px;
  }

  .nav-links {
    display: none;
  }

  /* Hero image shrinks */
  .project-hero__image-wrap {
    height: 249px;
  }

  /* Title below image, not overlaid */
  .project-hero__title-overlay {
    position: static;
    max-width: 100%;
    padding: 0 var(--page-padding);
    padding-top: 24px;
  }

  .project-hero__label {
    font-size: 12px;
    letter-spacing: 3px;
    color: var(--color-text);
  }

  .project-hero__name {
    font-size: 2.5rem;
    color: var(--color-text);
  }

  .project-hero__tagline {
    font-size: 16px;
    color: var(--color-muted); /* was rgba(0,0,0,.4) — 5.7:1, WCAG AA */
  }

  /* Meta bar: vertical stack */
  .project-hero__meta {
    flex-direction: column;
    padding: 24px var(--page-padding);
    gap: 12px;
  }

  .meta-item {
    flex: none;
    width: 100%;
  }

  .meta-item__label {
    font-size: 12px;
    letter-spacing: 2.5px;
  }

  .meta-item__value {
    font-size: 15px;
    line-height: 1.6;
  }

  /* Divider */
  .project-hero__divider {
    width: calc(100% - var(--page-padding) * 2);
    margin: 0 var(--page-padding);
  }

  /* Overview: single column */
  .project-hero__overview {
    flex-direction: column;
    padding: var(--page-padding);
    gap: 32px;
  }

  .overview-col:first-child {
    width: 100%;
  }

  .overview-col__label {
    font-size: 12px;
    letter-spacing: 2.5px;
  }

  .overview-col__text {
    font-size: 17px;
    line-height: 1.7;
  }

  /* Content sections */
  .project-content {
    padding: 32px 0 var(--page-padding);
  }

  .content-columns {
    flex-direction: column;
    gap: 24px;
  }

  .content-text p {
    font-size: 14px;
    line-height: 1.65;
  }

  /* The global reset zeroes list padding, so markers hang outside the
     page padding — pull them back in and match the paragraph type */
  .content-text ul,
  .content-text ol {
    padding-left: 1.25em;
  }

  .content-text li {
    font-size: 14px;
    line-height: 1.65;
  }

  .content-text li + li {
    margin-top: var(--space-sm, 0.5rem);
  }

  .content-label {
    font-family: var(--font-display);
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--color-muted); /* was rgba(0,0,0,.4) — 5.7:1, WCAG AA */
  }

  .content-image {
    height: 220px;
  }

  /* Decorative dots */
  .dot {
    width: 18px;
    height: 18px;
  }

  /* Gallery: horizontal swipe strip that snaps per image (same idea as
     the home page's .hero-strip, minus the auto-drift) */
  .image-gallery {
    height: 240px;
    padding: 0 var(--page-padding);
    gap: 8px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: var(--page-padding);
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .image-gallery::-webkit-scrollbar {
    display: none;
  }

  .gallery-img {
    flex: 0 0 82%; /* next image peeks in, hinting there's more to swipe */
    scroll-snap-align: start;
  }

  /* A single image has nothing to swipe to — let it fill the row */
  .gallery-img:only-child {
    flex-basis: 100%;
  }

  .media-grid--rows {
    grid-template-columns: 1fr 1fr;
  }

  .cs-snapshot,
  .cs-toolkit,
  .cs-learnings {
    grid-template-columns: 1fr;
  }

  .cs-snapshot {
    padding: var(--page-padding);
  }

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

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

  .cs-section__intro,
  .cs-snapshot__text,
  .cs-learnings__col p {
    font-size: 14px;
    line-height: 1.65;
  }

  .media-grid {
    columns: 2;
    padding: 0 var(--page-padding);
    margin-bottom: 32px;
  }

  /* Stats: vertical stack, smaller numbers */
  .key-outcomes {
    flex-direction: column;
    padding: 24px var(--page-padding);
    gap: 24px;
  }

  .stat__number {
    font-size: 1.25rem;
    font-weight: 400;
  }

  .stat__label {
    font-family: var(--font-display);
    font-size: 12px;
    letter-spacing: 1.5px;
    text-transform: none;
  }

  /* Next project */
  .next-project__label {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 2px;
  }

  .next-project__name {
    font-size: 2.25rem;
    font-weight: 400;
  }

  .next-project__arrow {
    font-size: 20px;
  }

  .next-project__subtitle {
    display: block;
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--color-muted); /* was rgba(0,0,0,.4) — 5.7:1, WCAG AA */
  }
}