/* ==========================================================================
   Variables
   ========================================================================== */
:root {
  --bg: #ffffff;
  --fg: #000000;
  --muted: #000000;
  --link: #333333;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 64px;
  --container-width: 1100px;
  --font-size-sm: 13px;
  --font-size-base: 14px;
  --font-size-lg: 16px;
  --font-weight-light: 200;
  --font-weight-regular: 300;
  --border-color: #e9e9e9;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */
* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: Avenir, "Avenir Next", system-ui, -apple-system, BlinkMacSystemFont,
    Segoe UI, Helvetica Neue, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--fg);
  background: var(--bg);
  font-weight: var(--font-weight-light);
  font-size: var(--font-size-base);
}

/* ==========================================================================
   Typography & Links
   ========================================================================== */
a {
  color: var(--fg);
  text-decoration: underline;
  transition: color 0.2s ease;
}

/* Reset styles for special links */
.menu a,
.card-links a,
.footer-social a {
  color: var(--link);
  text-decoration: none;
}

/* Remove unwanted spacing around links */
.updates-list a,
.card-related a {
  display: inline;
  padding: 0;
  margin: 0;
  background: none;
  text-decoration: underline;
  color: var(--fg);
}

/* Prevent awkward gaps around inline elements inside list items */
.updates-list li > *:not(.update-date) {
  margin-left: 0;
}

.card-related li a,
.card-related li span,
.card-related li em {
  margin: 0;
}

a:hover {
  color: var(--link);
}

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
  width: min(var(--container-width), 92vw);
  margin: 0 auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--spacing-xxl);
  margin-bottom: var(--spacing-xl);
}

/* Grid spans */
.span-1 { grid-column: span 1; }
.span-2 { grid-column: span 2; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-10 { grid-column: span 10; }
.span-12 { grid-column: span 12; }

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(6px);
  background: transparent;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  position: relative;
}

.brand {
  font-weight: var(--font-weight-regular);
  letter-spacing: 0.06em;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: var(--spacing-xs);
  cursor: pointer;
  color: var(--muted);
  font-size: 20px;
}

.nav-toggle:hover {
  color: var(--fg);
}

.menu {
  display: flex;
  gap: 18px;
  font-size: var(--font-size-base);
  color: var(--muted);
}

.menu a {
  padding: 6px var(--spacing-sm);
  border-radius: var(--spacing-sm);
  color: inherit;
  transition: all 0.2s ease;
}

.menu a:hover {
  background: #efefef;
  color: var(--fg);
  text-decoration: none;
}

/* Social icons under intro */
.hero-social {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  margin-top: var(--spacing-xxl);
}

.hero-social a {
  color: var(--muted);
  text-decoration: none;
  font-size: 16px;
  transition: all 0.2s ease;
}

.hero-social a:hover {
  color: var(--fg);
  text-decoration: none;
}

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }

  .menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg);
    padding: var(--spacing-md);
    gap: var(--spacing-md);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 100;
  }

  .menu.active {
    display: flex;
  }

  .menu a {
    padding: var(--spacing-xs) var(--spacing-sm);
    width: 100%;
    text-align: center;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding-top: var(--spacing-xxl);
  padding-bottom: var(--spacing-xl);
}

.hero-sub {
  font-size: var(--font-size-base);
  color: var(--muted);
  max-width: 64ch;
  line-height: 1.6;
}

/* ==========================================================================
   Updates Section
   ========================================================================== */
.updates-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.updates-list li {
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
  display: grid;
  grid-template-columns: 100px 1fr;
  column-gap: var(--spacing-sm);
  align-items: start;
}

.updates-list li .content {
  flex: 1;
}

.updates-list li .news-image {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: var(--spacing-xs);
  margin-left: var(--spacing-md);
}

.update-date {
  color: var(--muted);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  display: block;
  margin: 0; /* spacing handled by grid gap */
}

/* Place non-date content in the second column */
.updates-list li > :not(.update-date) {
  grid-column: 2;
}


/* News expand/collapse */
.news-actions {
  margin-top: var(--spacing-lg);
  display: flex;
  justify-content: center;
}

.news-toggle {
  appearance: none;
  border: none;
  font: inherit;
  cursor: pointer;
}

/* News list show/hide functionality */
#news-list li:nth-child(n+6) {
  display: none;
}

#news-list.expanded li:nth-child(n+6) {
  display: block;
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
  overflow: hidden;
}

.card-image-container {
  position: relative;
  margin: 0;
  width: 100%;
}

.photo-credit {
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--muted);
}

.hero-carousel {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

.hero-carousel .carousel-container {
  position: relative;
  width: 100%;
  padding: 0;
}

.hero-carousel .carousel-track {
  display: flex;
  width: 100%;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-carousel .carousel-slide {
  flex: 0 0 100%;
  width: 100%;
}

.hero-carousel .carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  aspect-ratio: 4/5; /* slightly taller for a bigger carousel */
}

.hero-carousel .carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: 0;
  display: block;
  transform: none !important;
  transition: none;
  border-radius: 0;
}

.hero-carousel .carousel-button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg);
  border: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: var(--font-size-base);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
  z-index: 1;
  opacity: 0;
}

.hero-carousel:hover .carousel-button {
  opacity: 1;
}

.hero-carousel .carousel-button:hover {
  background: var(--fg);
  color: var(--bg);
}

.hero-carousel .carousel-button.prev {
  left: var(--spacing-xs);
}

.hero-carousel .carousel-button.next {
  right: var(--spacing-xs);
}

.card img {
  width: 100%;
  height: auto;
  display: block;
  background: #f1f1f1;
  margin-bottom: var(--spacing-sm);
  object-fit: cover;
}

.card-heading {
  font-weight: var(--font-weight-regular);
  margin: var(--spacing-md) 0 var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.card-heading .conference {
  display: block;
  font-size: var(--font-size-base);
  color: var(--muted);
  margin-top: var(--spacing-xs);
}

.card-description {
  margin: 0 0 var(--spacing-sm);
  color: var(--muted);
  line-height: 1.5;
  font-style: italic;
}

.card-related {
  margin: 0;
  font-size: var(--font-size-sm);
}

.card-related h4 {
  font-weight: var(--font-weight-regular);
  margin: 0 0 var(--spacing-sm);
  font-size: var(--font-size-base);
  color: var(--muted);
}

.card-related ul {
  list-style: none;
  padding: 0;
  display: block;
  margin: 0;
}

.card-related li {
  color: var(--muted);
  position: relative;
  margin-bottom: calc(var(--spacing-xs) / 2);
  padding-left: var(--spacing-sm); /* small indent for custom dash */
}

/* Dash bullet */
.card-related li::before {
  content: "—";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--muted);
}

.related-work-media {
  object-fit: cover;
  border-radius: var(--spacing-xs);
  float: right;
  margin-left: var(--spacing-md);
  margin-top: var(--spacing-xs);
}

.card-links {
  display: flex;
  gap: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--link);
  align-items: center;
  margin: var(--spacing-sm) 0 var(--spacing-md);
  flex-wrap: wrap;
}


.card-links a,
.news-toggle {
  padding: 6px var(--spacing-sm);
  border-radius: var(--spacing-sm);
  background: #efefef;
  color: var(--muted);
  transition: all 0.2s ease;
  font-size: var(--font-size-sm);
  text-decoration: none;
}

.card-links a:hover,
.news-toggle:hover {
  background: #e5e5e5;
  color: var(--fg);
}

/* ==========================================================================
   Gallery
   ========================================================================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  width: 100%;
  margin: 0;
  padding: 0;
}

.gallery-item.span-2 {
  grid-column: span 2;
}

.gallery-item {
  position: relative;
  margin: 0;
}

.gallery-item img {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
  background: #f1f1f1;
}

.gallery-item a {
  display: block;
  cursor: pointer;
}

.gallery-item a img {
  transition: transform 0.3s ease;
}

.gallery-item a:hover img {
  transform: scale(1.02);
}

.gallery-item figcaption {
  font-size: var(--font-size-sm);
  color: var(--muted);
  margin-top: var(--spacing-sm);
  text-align: left;
  line-height: 1.4;
}

/* ==========================================================================
   Sections
   ========================================================================== */
.section {
  padding: var(--spacing-lg) 0;
}

.section.sketches-carousel {
  padding: 0;
}

#art.section {
  padding: 0 0 var(--spacing-xxl);
}

.section h2 {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--font-size-base);
  color: var(--muted);
  margin: 0 0 var(--spacing-lg);
  font-weight: var(--font-weight-regular);
}

.section > .dated-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.section > .dated-list > li {
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: baseline;
  gap: var(--spacing-lg);
  line-height: 1.5;
}

.section > .dated-list .list-date {
  color: var(--muted);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  width: 100px;
}

.section > .dated-list li em {
  font-style: italic;
  color: var(--muted);
}

/* ==========================================================================
   Sketches Slider
   ========================================================================== */
.sketches-carousel {
  overflow: hidden;
}

.carousel-container {
  position: relative;
  width: 100%;
  padding: 0;
}

.carousel-track {
  display: flex;
  gap: var(--spacing-xl);
  transition: transform 0.5s ease;
  padding: 0 var(--spacing-xl);
}

.carousel-slide {
  flex: 0 0 auto;
  width: calc(25% - var(--spacing-lg));
}

.carousel-slide img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--spacing-xs);
  transition: transform 0.3s ease;
}

.carousel-slide img:hover {
  transform: scale(1.05);
}

.carousel-button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: var(--font-size-lg);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
  z-index: 1;
}

.carousel-button:hover {
  background: var(--fg);
  color: var(--bg);
}

.carousel-button.prev {
  left: 0;
}

.carousel-button.next {
  right: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
  padding: var(--spacing-xl) 0 60px;
  color: var(--muted);
  border-top: 1px solid var(--border-color);
  margin-top: var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: var(--spacing-xxl);
}

.footer-social {
  display: flex;
  gap: 20px;
  justify-content: flex-end;
  align-items: flex-start;
}

.footer-social a {
  color: var(--muted);
  font-size: 18px;
  transition: all 0.2s ease;
}

.footer-social a:hover {
  color: var(--fg);
  text-decoration: none;
}

.footer-quote {
  margin: 0;
  text-align: left;
  color: var(--muted);
  font-style: italic;
  max-width: 60ch;
}

.footer-quote p {
  margin: 0 0 var(--spacing-xs);
}

.footer-quote cite {
  font-size: var(--font-size-sm);
  color: var(--muted);
}

/* ==========================================================================
   Utilities
   ========================================================================== */
.shadow-img {
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
  filter: drop-shadow(0 0 5px rgba(0, 0, 0, 0.2));
}

.video-container {
  aspect-ratio: 16/9;
  position: relative;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (min-width: 800px) {
  .hero {
    grid-template-columns: 1.3fr 0.9fr;
    align-items: end;
  }
}

@media (max-width: 1000px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
  }

  .gallery-item.span-2 {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  .gallery-item.span-2 {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .grid {
    gap: var(--spacing-xl);
  }

  .span-4,
  .span-5,
  .span-6,
  .span-7,
  .span-8,
  .span-12 {
    grid-column: 1 / -1;
  }

  /* Reduce spacing at top of page on small screens */
  .nav {
    padding: var(--spacing-sm) 0;
  }

  .hero {
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
  }

  /* Hide desktop spacer column inside hero on mobile */
  .hero .span-1 {
    display: none;
  }

  .card-heading {
    font-size: var(--font-size-base);
  }

  .card-description {
    font-size: var(--font-size-sm);
  }

  .card-related ul {
    gap: var(--spacing-xs);
  }

  .card-links {
    gap: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: repeat(1, 1fr);
    gap: var(--spacing-xl);
  }
}