/* ===== Design Tokens ===== */
:root {
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --color-bg: #fafafa;
  --color-text: #1a1a1a;
  --color-text-muted: #777;
  --color-border: #e0e0e0;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  --max-content: 44rem;
  --transition-smooth: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --color-accent: #E85A35;
  --archive-gap: 12px;
}

/* ===== Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ===== Base ===== */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: var(--space-md) var(--space-md) var(--space-sm);
  background: var(--color-bg);
}

.site-name {
  display: flex;
  flex-direction: column;
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  line-height: 1;
}

.site-header nav {
  display: flex;
  gap: var(--space-md);
  padding-bottom: 0.25rem;
}

.site-header nav a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.site-header nav a:hover {
  color: var(--color-text);
}

.site-header nav a.is-active {
  color: var(--color-text);
}

/* ===== Main ===== */
main {
}

/* ===== Project Section ===== */
.project {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.project.is-visible {
  opacity: 1;
  transform: translateY(0);
}


/* ===== Project Hero ===== */
.project-hero {
  position: relative;
  width: 100%;
  cursor: pointer;
  overflow: hidden;
}

.project-hero img {
  width: 100%;
  height: 85vh;
  object-fit: cover;
  transition: transform var(--transition-smooth), filter var(--transition-smooth);
}

.project-hero:hover img {
  transform: scale(1.015);
}

/* Dim hero when project is open */

}

/* p5.js sketch hero */
.project-hero-sketch {
  width: 100%;
  height: 85vh;
  overflow: hidden;
}

.project-hero canvas {
  display: block;
  transition: filter var(--transition-smooth);
}


.project-hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-xl) var(--space-md) var(--space-md);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.55));
  color: #fff;
  pointer-events: none;
}

.project-hero-overlay h2 {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 0.25rem;
}

.project-meta {
  font-size: 0.875rem;
  font-weight: 400;
  opacity: 0.85;
}

.meta-sep {
  margin: 0 0.15em;
}

/* ===== Project Detail (Expand/Collapse) ===== */
.project-detail {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-smooth);
  overflow: hidden;
}

.project-detail[aria-hidden="false"] {
  grid-template-rows: 1fr;
}

.project-detail-inner {
  overflow: hidden;
  min-height: 0;
  padding: 0 var(--space-md);
  background: #f0f0f0;
  transition: padding var(--transition-smooth);
}

.project-detail[aria-hidden="false"] .project-detail-inner {
  padding: var(--space-lg) var(--space-md) var(--space-xl);
}

.project-detail-inner > * {
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.project-detail[aria-hidden="false"] .project-detail-inner > *:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0.05s; }
.project-detail[aria-hidden="false"] .project-detail-inner > *:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.15s; }
.project-detail[aria-hidden="false"] .project-detail-inner > *:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.25s; }
.project-detail[aria-hidden="false"] .project-detail-inner > *:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 0.35s; }
.project-detail[aria-hidden="false"] .project-detail-inner > *:nth-child(5) { opacity: 1; transform: translateY(0); transition-delay: 0.45s; }

/* ===== Project Description ===== */
.project-description {
  margin-bottom: var(--space-lg);
}

/* Text blocks: constrained to reading width */
.project-description p,
.project-description h2,
.project-description h3,
.project-description ul,
.project-description ol {
  max-width: var(--max-content);
  margin-left: auto;
  margin-right: auto;
}

.project-description p {
  margin-bottom: var(--space-sm);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text);
}

.project-description p:last-child {
  margin-bottom: 0;
}

.project-description a {
  color: var(--color-accent);
  transition: opacity var(--transition-fast);
}

.project-description a:hover {
  opacity: 0.75;
}

.project-description h2 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
}

/* Single image: fills text column width */
.project-description img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 3px;
}

/* Multiple images in the same paragraph: grid within text column */
.project-description p:has(> img ~ img) {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--archive-gap);
}

.project-description p:has(> img ~ img) img {
  width: 100%;
  height: auto;
}

/* Inline video (locally hosted): constrained to text column */
.project-description video {
  display: block;
  width: 100%;
  height: auto;
  max-width: var(--max-content);
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-sm);
  border-radius: 3px;
}

/* Responsive iframe (YouTube, Vimeo, any URL): constrained to text column */
.project-description iframe {
  display: block;
  width: 100%;
  max-width: var(--max-content);
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-sm);
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 3px;
}

/* ===== Project Gallery ===== */
.project-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xs);
  max-width: 64rem;
  margin: 0 auto var(--space-lg);
}

.project-gallery img {
  width: 100%;
  border-radius: 2px;
}

/* Site embed (scaled iframe that looks like an inline image) */
.site-embed {
  width: 100%;
  max-width: var(--max-content);
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-sm);
  overflow: hidden;
  border-radius: 3px;
}

.site-embed iframe {
  display: block;
  width: 1200px; /* override .project-description iframe width: 100% */
  max-width: none;
  margin: 0;
  transform-origin: top left;
  border: none;
}

/* ===== Video Embed ===== */
.project-video {
  max-width: var(--max-content);
  margin: 0 auto var(--space-lg);
}

.video-embed {
  position: relative;
  aspect-ratio: 16 / 9;
  width: 100%;
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* YouTube facade */
.youtube-facade {
  display: block;
  width: 100%;
  max-width: var(--max-content);
  aspect-ratio: 16 / 9;
  position: relative;
  cursor: pointer;
  background: #000;
  border-radius: 3px;
  overflow: hidden;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-sm);
}

.video-embed .youtube-facade {
  position: absolute;
  inset: 0;
  aspect-ratio: unset;
  margin: 0;
  border-radius: 0;
}

.youtube-facade img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity 0.2s ease;
}

.youtube-facade:hover img {
  opacity: 0.85;
}

.youtube-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.youtube-play svg {
  width: 56px;
  height: 56px;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.3));
  transition: transform 0.2s ease;
}

.youtube-facade:hover .youtube-play svg {
  transform: scale(1.08);
}

/* ===== Project Link ===== */
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  padding-top: 0.25rem;
  transition: color var(--transition-fast);
}

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

/* Block link in featured panel */
.project-detail-inner .project-link {
  display: block;
  max-width: var(--max-content);
  margin-left: auto;
  margin-right: auto;
  width: fit-content;
}

/* ===== Back Button ===== */
.project-back {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
  transition: color var(--transition-fast);
}

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


/* ===== Archive Page ===== */
.archive {
  padding-top: 4.5rem;
}

/* Wrapping thumbnail grid */
.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--archive-gap);
  padding: 0 var(--space-md);
  position: relative;
}

/* Tail pointing to selected item */
.archive-detail-tail {
  position: absolute;
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 10px solid #f0f0f0;
  transform: translateX(-50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease, left 0.3s ease;
}

.archive-detail-tail.is-visible {
  opacity: 1;
}

.archive-item {
  cursor: pointer;
  opacity: 0;
  transition: filter 0.3s ease, opacity 0.4s ease var(--reveal-delay, 0ms);
}

.archive-item.is-visible {
  opacity: 1;
}

.archive-grid:has(.archive-item.is-active) .archive-item:not(.is-active) {
  filter: grayscale(1);
  opacity: 0.5;
  transition: filter 0.3s ease, opacity 0.3s ease;
}

.archive-grid:has(.archive-item.is-active) .archive-item:not(.is-active):hover {
  filter: grayscale(0);
  opacity: 1;
}

.archive-thumb {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 3px;
  background: #f0f0f0;
}

.archive-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-fast);
}

.archive-item:hover .archive-thumb img {
  transform: scale(1.04);
}

.archive-item-info {
  display: flex;
  flex-direction: column;
  padding: var(--space-xs) 0;
}

.archive-item-title {
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.3;
}

.archive-item-role {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}

/* ===== Archive Detail ===== */
.archive-detail {
  display: grid;
  grid-template-rows: 0fr;
  grid-column: 1 / -1;
  transition: grid-template-rows var(--transition-smooth);
  overflow: hidden;
}

.archive-detail[aria-hidden="false"] {
  grid-template-rows: 1fr;
}

.archive-detail-wrap {
  overflow: hidden;
  min-height: 0;
}

.archive-detail-content:not([hidden]) {
  display: block;
}

.archive-detail-inner {
  padding: 0 var(--space-md);
  background: #f0f0f0;
  transition: padding var(--transition-smooth);
}

.archive-detail[aria-hidden="false"] .archive-detail-inner {
  padding: var(--space-lg) var(--space-md) var(--space-xl);
}

.archive-detail-inner > * {
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 0.5s ease 0.15s, transform 0.5s ease 0.15s;
}

.archive-detail[aria-hidden="false"] .archive-detail-inner > * {
  opacity: 1;
  transform: translateY(0);
}

.archive-detail-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  max-width: var(--max-content);
  margin: 0 auto var(--space-md);
}

.archive-detail-header h3 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 0.25rem;
}

.archive-close {
  display: block;
  margin: var(--space-md) auto 0;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  transition: background var(--transition-fast), color var(--transition-fast);
  line-height: 1;
}

.archive-close:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--color-text);
}

/* ===== About ===== */
.about {
  overflow: hidden;
  height: 0;
  opacity: 0;
  transition: height 0.6s cubic-bezier(0, 0, 0.2, 1), opacity 0.6s cubic-bezier(0, 0, 0.2, 1);
}

.about[aria-hidden="false"] {
  opacity: 1;
}

.about-inner {
  max-width: var(--max-content);
  margin: 0;
  padding: 3.5rem var(--space-md) var(--space-lg);
}

.about p {
  font-size: 1.0625rem;
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

.about p:last-of-type {
  margin-bottom: var(--space-lg);
}

.about a {
  color: var(--color-accent);
  transition: opacity var(--transition-fast);
}

.about a:hover {
  opacity: 0.75;
}

.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-md);
}

.about-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.about-links a:hover {
  color: var(--color-text);
}

/* ===== Archive CTA ===== */
.archive-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: var(--space-xl) var(--space-md) var(--space-md);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.archive-cta:hover {
  color: var(--color-text);
}

@media (min-width: 769px) {
  .archive-cta {
    grid-column: 1 / -1;
  }
}

/* ===== Footer ===== */
.site-footer {
  padding: var(--space-xl) var(--space-md) var(--space-lg);
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .project-hero img {
    height: 60vh;
  }

  .project-hero-sketch {
    height: 60vh;
  }

  .project-hero-overlay {
    padding: var(--space-lg) var(--space-md) var(--space-md);
  }

  .project-hero-overlay h2 {
    font-size: 1.375rem;
  }

  .project-detail-inner {
    padding: 0 var(--space-sm);
  }

  .project-detail[aria-hidden="false"] .project-detail-inner {
    padding: var(--space-md) var(--space-sm) var(--space-lg);
  }

  .project-gallery {
    grid-template-columns: 1fr;
  }

  /* Archive responsive */
  .archive-grid {
    grid-template-columns: repeat(2, 1fr);
    padding: 0 var(--space-sm);
  }
}

@media (max-width: 480px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-sm) var(--space-sm);
  }

  .site-header nav {
    gap: var(--space-sm);
  }

  .project-hero img {
    height: 50vh;
  }

  .project-hero-sketch {
    height: 50vh;
  }

  .about-inner {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

}

@media (min-width: 769px) {
  /* Featured: 2-column grid */
  main#work {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow-x: clip;
    transition: grid-template-columns 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  }

  main#work.open-left  { grid-template-columns: 1fr 0fr; }
  main#work.open-right { grid-template-columns: 0fr 1fr; }

  main#work .project {
    min-width: 0;
  }

  main#work .project-hero img,
  main#work .project-hero-sketch {
    height: 50vh;
  }
}