/* ============================================================
   DANYANG WU — VISUAL ARCHIVE
   Complete stylesheet — no JavaScript required
   ============================================================ */


/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */

:root {
  /* Colors */
  --bg:              #F5F2EE;
  --text:            #1A1A1A;
  --text-secondary:  #6B6560;
  --text-tertiary:   #A39E98;
  --border:          #E0DCD7;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
               Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* Spacing (8px base) */
  --space-xs:      0.5rem;   /*  8px */
  --space-sm:      1rem;     /* 16px */
  --space-md:      2rem;     /* 32px */
  --space-lg:      4rem;     /* 64px */
  --space-xl:      8rem;     /* 128px */
  --space-section: clamp(5rem, 12vh, 10rem);

  /* Layout */
  --max-width:     1400px;
  --content-width: 860px;
  --gutter:        clamp(1.25rem, 5vw, 3rem);
}


/* ============================================================
   2. RESET & BASE
   ============================================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}


/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */

h1, h2, h3, h4 {
  font-weight: 400;
  line-height: 1.2;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  letter-spacing: -0.005em;
}

h3 {
  font-size: 1rem;
  font-weight: 500;
}

p {
  max-width: 60ch;
}

.text-secondary {
  color: var(--text-secondary);
}

.text-small {
  font-size: 0.8125rem;
  line-height: 1.5;
}

.text-caption {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.text-statement {
  font-size: clamp(1.125rem, 2vw, 1.3125rem);
  font-weight: 300;
  line-height: 1.55;
  font-style: italic;
  max-width: 48ch;
}


/* ============================================================
   4. LAYOUT UTILITIES
   ============================================================ */

.container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.container--narrow {
  max-width: var(--content-width);
}

.page-padding {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}


/* ============================================================
   5. SKIP LINK (Accessibility)
   ============================================================ */

.skip-link {
  position: absolute;
  top: -3rem;
  left: var(--gutter);
  background: var(--text);
  color: var(--bg);
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.8125rem;
  z-index: 200;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: var(--space-xs);
  outline: 2px solid var(--text);
  outline-offset: 2px;
}


/* ============================================================
   6. SITE HEADER & NAVIGATION
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  padding: var(--space-sm) var(--gutter);
  background-color: rgba(245, 242, 238, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-title {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: lowercase !important;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-md);
  align-items: baseline;
}

.nav-link {
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  padding-bottom: 2px;
}

.nav-link--active {
  color: var(--text);
}

@media (hover: hover) {
  .nav-link:hover {
    color: var(--text);
  }
}


/* ============================================================
   7. HOMEPAGE
   ============================================================ */

.home-stream {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-lg) 0 var(--space-section);
}

.home-item {
  padding: 0 var(--gutter);
  margin-bottom: var(--space-section);
}

.home-item:last-child {
  margin-bottom: 0;
}

.home-item a {
  display: block;
}

/* Size variants */
.home-item--large   { width: min(75vw, 1100px); }
.home-item--medium  { width: min(50vw, 700px);  }
.home-item--small   { width: min(30vw, 400px);  }

/* Position variants */
.home-item--left    { align-self: flex-start;  }
.home-item--right   { align-self: flex-end;    }
.home-item--center  { align-self: center;      }

/* Home item caption (category hint) */
.home-item .item-label {
  margin-top: var(--space-xs);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  transition: opacity 0.3s ease;
}

@media (hover: hover) {
  .home-item .item-label {
    opacity: 0;
  }
  .home-item:hover .item-label {
    opacity: 1;
  }
}

/* Home video */
.home-video video {
  width: 100%;
}

/* Static poster fallback for reduced-motion */
.home-video .video-poster-fallback {
  display: none;
}


/* ============================================================
   8. SECTION HEADERS
   ============================================================ */

.section-header {
  padding: var(--space-section) var(--gutter) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header h1 {
  margin-bottom: var(--space-xs);
}

.section-header .section-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
}


/* ============================================================
   9. PHOTOGRAPHY INDEX
   ============================================================ */

.projects-list {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter) var(--space-section);
}

.project-card {
  display: block;
  margin-bottom: var(--space-section);
}

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

.project-card img {
  width: 100%;
}

.project-card-info {
  margin-top: var(--space-sm);
}

.project-card-info h2 {
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.project-card-info .project-year {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}


/* ============================================================
   10. GALLERY SYSTEM (Photography Projects)
   ============================================================ */

.project-hero {
  padding: var(--space-section) var(--gutter) var(--space-lg);
  max-width: var(--content-width);
  margin: 0 auto;
}

.project-hero h1 {
  margin-bottom: 0.25rem;
}

.project-hero .project-year {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.project-statement {
  padding: 0 var(--gutter);
  max-width: var(--content-width);
  margin: 0 auto var(--space-section);
}

.project-gallery {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: var(--space-section);
}

.gallery-item {
  padding: 0 var(--gutter);
  margin-bottom: var(--space-section);
  max-width: var(--max-width);
}

.gallery-item:last-child {
  margin-bottom: 0;
}

.gallery-item img {
  width: 100%;
}

.gallery-item figcaption {
  margin-top: var(--space-xs);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  transition: opacity 0.3s ease;
}

/* Reveal captions on hover (desktop only) */
@media (hover: hover) {
  .gallery-item figcaption {
    opacity: 0;
  }
  .gallery-item:hover figcaption,
  .gallery-item:focus-within figcaption {
    opacity: 1;
  }
}

/* Layout variants */
.gallery-item--full {
  width: 100%;
}

.gallery-item--center {
  width: 65%;
}

.gallery-item--left {
  width: 55%;
  align-self: flex-start;
}

.gallery-item--right {
  width: 55%;
  align-self: flex-end;
}

.gallery-item--small {
  width: 38%;
}

/* Pairs: two images side by side */
.gallery-pair {
  display: flex;
  gap: var(--space-md);
  width: 85%;
  max-width: var(--max-width);
  padding: 0 var(--gutter);
  margin-bottom: var(--space-section);
}

.gallery-pair .gallery-item {
  flex: 1;
  padding: 0;
  margin-bottom: 0;
}


/* ============================================================
   11. CERAMICS
   ============================================================ */

.ceramics-grid {
  columns: 2;
  column-gap: var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter) var(--space-section);
}

.ceramic-piece {
  break-inside: avoid;
  margin-bottom: var(--space-lg);
}

.ceramic-piece img {
  width: 100%;
}

.ceramic-info {
  margin-top: var(--space-xs);
}

.ceramic-info h3 {
  font-size: 0.875rem;
  font-weight: 400;
}

.ceramic-info .ceramic-meta {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 0.125rem;
  letter-spacing: 0.03em;
}

/* Hover reveal for ceramic metadata */
@media (hover: hover) {
  .ceramic-info {
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  .ceramic-piece:hover .ceramic-info,
  .ceramic-piece:focus-within .ceramic-info {
    opacity: 1;
  }
}


/* ============================================================
   12. VIDEO / MOVING
   ============================================================ */

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(360px, 100%), 1fr));
  gap: var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter) var(--space-section);
}

.video-item video {
  width: 100%;
  background-color: var(--border);
}

.video-info {
  margin-top: var(--space-xs);
}

.video-info h3 {
  font-size: 0.875rem;
  font-weight: 400;
}

.video-info .video-meta {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 0.125rem;
  letter-spacing: 0.03em;
}

.video-duration {
  display: inline-block;
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
  margin-top: 0.25rem;
}


/* ============================================================
   13. FRUIT / COLLECTED
   ============================================================ */

.fruit-intro {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--gutter) var(--space-lg);
}

.fruit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter) var(--space-section);
}

.fruit-entry {
  transition: transform 0.3s ease;
}

.fruit-entry img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.fruit-info {
  margin-top: var(--space-xs);
}

.fruit-info .fruit-name {
  font-size: 0.9375rem;
  font-weight: 500;
}

.fruit-info .fruit-place {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-top: 0.125rem;
}

.fruit-info .fruit-year {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 0.0625rem;
}

/* Slight lift on hover */
@media (hover: hover) {
  .fruit-entry:hover {
    transform: translateY(-2px);
  }
}


/* ============================================================
   14. ABOUT
   ============================================================ */

.about-layout {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-section) var(--gutter);
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-lg);
  align-items: start;
}

.about-photo img {
  width: 100%;
}

.about-text p {
  margin-bottom: var(--space-sm);
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-section {
  margin-top: var(--space-lg);
}

.about-section h2 {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.about-section ul li {
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.about-contact {
  margin-top: var(--space-lg);
}

.about-contact a {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-right: var(--space-md);
  padding-bottom: 1px;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s ease, border-color 0.2s ease;
}

@media (hover: hover) {
  .about-contact a:hover {
    color: var(--text);
    border-color: var(--text);
  }
}


/* ============================================================
   15. FOOTER
   ============================================================ */

.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-md) var(--gutter);
  margin-top: var(--space-section);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-name {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: lowercase !important;
  color: var(--text-tertiary);
}

.footer-links {
  display: flex;
  gap: var(--space-md);
}

.footer-links a {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  transition: color 0.2s ease;
}

@media (hover: hover) {
  .footer-links a:hover {
    color: var(--text);
  }
}


/* ============================================================
   16. FIGURE & IMAGE STYLES
   ============================================================ */

figure {
  position: relative;
}

figure img {
  display: block;
}

/* Subtle scale on image hover (desktop) */
@media (hover: hover) {
  .gallery-item img,
  .project-card img,
  .home-item img {
    transition: transform 0.5s ease;
  }

  .gallery-item:hover img,
  .project-card:hover img,
  .home-item:hover img {
    transform: scale(1.015);
  }
}

/* Overflow hidden on figures to contain scale */
.gallery-item,
.project-card,
.home-item a {
  overflow: hidden;
}

/* Ensure figcaption is outside overflow hidden */
.gallery-item {
  overflow: visible;
}

.gallery-item img {
  overflow: hidden;
}


/* ============================================================
   17. FOCUS STYLES
   ============================================================ */

:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 3px;
}

a:focus:not(:focus-visible) {
  outline: none;
}


/* ============================================================
   18. RESPONSIVE — TABLET (≤ 1024px)
   ============================================================ */

@media (max-width: 1024px) {
  .home-item--large  { width: min(85vw, 1000px); }
  .home-item--medium { width: min(60vw, 600px);  }
  .home-item--small  { width: min(40vw, 360px);  }

  .gallery-item--center { width: 75%; }
  .gallery-item--left,
  .gallery-item--right  { width: 65%; }
  .gallery-item--small  { width: 45%; }

  .gallery-pair { width: 90%; }
}


/* ============================================================
   19. RESPONSIVE — MOBILE (≤ 768px)
   ============================================================ */

@media (max-width: 768px) {
  .site-header {
    flex-direction: column;
    gap: var(--space-xs);
    padding-top: var(--space-sm);
    padding-bottom: var(--space-sm);
  }

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

  /* Homepage */
  .home-item--large  { width: 100%; }
  .home-item--medium { width: 85%;  }
  .home-item--small  { width: 65%;  }

  /* Gallery */
  .gallery-item--full,
  .gallery-item--center,
  .gallery-item--left,
  .gallery-item--right,
  .gallery-item--small {
    width: 100%;
    align-self: center;
  }

  .gallery-pair {
    flex-direction: column;
    width: 100%;
    gap: var(--space-lg);
  }

  /* Ceramics */
  .ceramics-grid {
    columns: 1;
  }

  /* Videos */
  .video-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  /* Fruit */
  .fruit-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  /* About */
  .about-layout {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .about-photo {
    max-width: 280px;
  }
}


/* ============================================================
   20. RESPONSIVE — SMALL MOBILE (≤ 480px)
   ============================================================ */

@media (max-width: 480px) {
  .nav-link {
    font-size: 0.75rem;
  }

  .home-item--small {
    width: 80%;
  }

  .fruit-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xs);
  }

  .fruit-info .fruit-name {
    font-size: 0.8125rem;
  }

  .fruit-info .fruit-place,
  .fruit-info .fruit-year {
    font-size: 0.6875rem;
  }
}


/* ============================================================
   21. REDUCED MOTION
   ============================================================ */

@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;
  }

  /* Hide autoplay videos, show poster fallback */
  .home-video video {
    display: none;
  }

  .home-video .video-poster-fallback {
    display: block;
  }
}


/* ============================================================
   22. PRINT
   ============================================================ */

@media print {
  .site-header,
  .site-footer,
  .skip-link {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  img {
    max-width: 100% !important;
    page-break-inside: avoid;
  }
}