/* krumdamianov.com — lapidary gallery aesthetic.
   Plaster ground, graphite ink, granite secondary, one bronze-gold accent. */

:root {
  --plaster: #f5f4f0;
  --graphite: #1c1b19;
  --granite: #87837a;
  --accent: #9c7a3c;
  --line: #dedcd5;

  --serif: Georgia, "Times New Roman", "Noto Serif", serif;
  --sans: -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;

  --inscription: 0.14em; /* letterspacing of a plinth inscription */
  --container: 1200px;
  --gap: clamp(1rem, 2.5vw, 2rem);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--plaster);
  color: var(--graphite);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

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

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gap);
}

/* ---------- inscription utility (plinth lettering) ---------- */

.site-nav a,
.piece-date,
.tag-chip,
.tile-label,
.hero-eyebrow,
.lang-switch,
.filter-state,
.site-footer p {
  font-family: var(--sans);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: var(--inscription);
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--plaster) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap);
  min-height: 4rem;
}

.site-title {
  font-family: var(--serif);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 2vw, 1.8rem);
}

.site-nav a {
  text-decoration: none;
  color: var(--granite);
  padding-block: 0.35rem;
  border-bottom: 1px solid transparent;
  transition: color 0.2s;
}

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

.site-nav a[aria-current="page"] {
  color: var(--graphite);
  border-bottom-color: var(--accent);
}

.lang-switch {
  color: var(--accent) !important;
  border: 1px solid var(--line);
  padding: 0.3rem 0.6rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  font-size: 1.1rem;
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  color: var(--graphite);
}

/* ---------- hero carousel ---------- */

.hero {
  position: relative;
  height: min(72vh, 46rem);
  min-height: 20rem;
  background: var(--graphite);
  overflow: hidden;
}

.hero-slides,
.gallery-slides {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.1s ease;
}

.hero-slide.is-active {
  opacity: 1;
}

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

.hero-copy {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  padding: clamp(4rem, 9vw, 7rem) var(--gap) clamp(2.2rem, 5vw, 3.6rem);
  background: linear-gradient(
    to top,
    rgba(28, 27, 25, 0.72),
    rgba(28, 27, 25, 0.25) 55%,
    transparent
  );
  pointer-events: none;
}

.hero-eyebrow {
  color: var(--accent);
  margin: 0 0 0.4rem;
  max-width: var(--container);
  margin-inline: auto;
}

.hero-title {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5.5vw, 4.2rem);
  font-weight: 400;
  color: var(--plaster);
  letter-spacing: 0.02em;
  margin: 0;
  max-width: var(--container);
  margin-inline: auto;
}

/* ---------- section heads with ghost inscription ---------- */

.section-head {
  position: relative;
  text-align: center;
  padding-top: clamp(2.5rem, 6vw, 4.5rem);
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.section-head .ghost {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(3rem, 9vw, 6.5rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(28, 27, 25, 0.045);
  white-space: nowrap;
  overflow: hidden;
  pointer-events: none;
  user-select: none;
}

.section-head h2 {
  position: relative;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  font-weight: 400;
  margin: 0;
}

.section-head h2::after {
  content: "";
  display: block;
  width: 3.5rem;
  height: 2px;
  background: var(--accent);
  margin: 0.9rem auto 0;
}

/* ---------- carousel controls (shared) ---------- */

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  background: color-mix(in srgb, var(--plaster) 85%, transparent);
  color: var(--graphite);
  border: none;
  width: 2.6rem;
  height: 2.6rem;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s;
}

.carousel-arrow:hover {
  background: var(--plaster);
}

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

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

.carousel-dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.9rem;
  display: flex;
  justify-content: center;
  gap: 0.55rem;
  z-index: 2;
}

.carousel-dot {
  width: 0.55rem;
  height: 0.55rem;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: color-mix(in srgb, var(--plaster) 55%, transparent);
  cursor: pointer;
}

.carousel-dot.is-active {
  background: var(--plaster);
}

/* ---------- biography section ---------- */

.bio-section {
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--line);
}

.bio-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: calc(var(--gap) * 2);
}

.bio-media img {
  width: 100%;
  border-bottom: 3px solid var(--graphite); /* the plinth */
}

.bio-text ul {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0 0;
  border-top: 1px solid var(--line);
}

.bio-text li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

/* ---------- category tiles (collections) ---------- */

.collections {
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

.category-tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: calc(var(--gap) * 1.5);
}

.category-tile {
  text-decoration: none;
}

.tile-media {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--graphite);
  border-bottom: 3px solid var(--graphite); /* the plinth */
}

.tile-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease, opacity 0.3s;
  opacity: 0.92;
}

.tile-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(28, 27, 25, 0.55), rgba(28, 27, 25, 0.12) 55%, transparent);
}

.tile-label {
  position: absolute;
  inset: auto 0 1.1rem 0;
  z-index: 1;
  text-align: center;
  color: var(--plaster);
  font-weight: 600;
}

.category-tile:hover .tile-media img {
  transform: scale(1.04);
  opacity: 1;
}

/* ---------- page title ---------- */

.page-title {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 400;
  margin: clamp(2rem, 5vw, 3.5rem) 0 0.5rem;
}

/* ---------- piece list ---------- */

.piece-list {
  display: flex;
  flex-direction: column;
  padding-block: clamp(1.5rem, 3vw, 2.5rem);
}

.piece-item {
  display: grid;
  grid-template-columns: minmax(200px, 320px) 1fr;
  gap: calc(var(--gap) * 1.5);
  padding-block: calc(var(--gap) * 1.25);
  border-bottom: 1px solid var(--line);
}

.piece-item-media {
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--line);
}

.piece-item-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.piece-item:hover .piece-item-media img {
  transform: scale(1.03);
}

.piece-item-title {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 400;
  margin: 0 0 0.4rem;
}

.piece-item-title a {
  text-decoration: none;
}

.piece-item-title a:hover {
  color: var(--accent);
}

.piece-item-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.7rem;
}

.piece-date {
  color: var(--granite);
}

.tag-chips {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag-chip {
  text-decoration: none;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  padding: 0.18rem 0.55rem;
  transition: background 0.2s, color 0.2s;
}

.tag-chip:hover {
  background: var(--accent);
  color: var(--plaster);
}

.piece-item-summary {
  margin: 0;
  color: var(--granite);
  max-width: 60ch;
}

/* ---------- piece detail page ---------- */

.piece-page {
  padding-block: clamp(2rem, 5vw, 3.5rem);
}

.piece-main {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: calc(var(--gap) * 2);
  align-items: start;
}

.piece-gallery {
  position: relative;
  aspect-ratio: 4 / 3;
  background: #ecebe6;
  border-bottom: 3px solid var(--graphite); /* the plinth */
}

.gallery-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.45s ease;
}

.gallery-slide.is-active {
  opacity: 1;
}

.gallery-slide img {
  width: 100%;
  height: 100%;
  object-fit: contain; /* never crop an artwork */
}

.piece-info h1 {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 400;
  margin: 0 0 0.6rem;
}

.piece-info .piece-date {
  font-size: 0.85rem;
  margin: 0 0 1rem;
}

.piece-description {
  max-width: 70ch;
  margin-top: clamp(2rem, 5vw, 3rem);
  padding-top: calc(var(--gap) * 1.25);
  border-top: 1px solid var(--line);
  font-size: 1.05rem;
}

/* ---------- art (tag filter) page ---------- */

.filter-state {
  color: var(--granite);
  margin: 0.25rem 0 0;
}

.filter-state .filter-tags {
  color: var(--accent);
}

.clear-filter {
  color: var(--granite);
  margin-left: 1rem;
}

.no-results {
  color: var(--granite);
  padding-block: 2rem;
}

/* ---------- footer ---------- */

.site-footer {
  background: var(--graphite);
  margin-top: clamp(3rem, 7vw, 5rem);
}

.site-footer p {
  color: #b5b1a8;
  padding-block: 1.6rem;
  margin: 0;
}

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .piece-main {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--plaster);
    border-bottom: 1px solid var(--line);
    padding: var(--gap);
    gap: 0.3rem;
  }

  .site-nav.is-open {
    display: flex;
  }

  .bio-row {
    grid-template-columns: 1fr;
  }

  .section-head .ghost {
    font-size: clamp(2.2rem, 12vw, 3rem);
  }

  .category-tiles {
    grid-template-columns: repeat(2, 1fr);
  }

  .piece-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 460px) {
  .category-tiles {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-slide,
  .gallery-slide,
  .tile-media img,
  .piece-item-media img {
    transition: none;
  }
}