/* ufoarthistory — modern, mobile-first, dark museum feel */
:root {
  --bg: #0b0b10;
  --bg-elev: #15151d;
  --bg-card: #1c1c26;
  --fg: #e9e7df;
  --fg-dim: #a8a49a;
  --accent: #d4a24c;
  --accent-soft: #c98b39;
  --danger: #c23b3b;
  --border: #2a2a36;
  --radius: 10px;
  --maxw: 1200px;
  --shadow: 0 10px 30px rgba(0,0,0,0.45);
  --font-serif: "Cormorant Garamond", "Garamond", "EB Garamond", Georgia, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-soft); text-decoration: underline; }

/* --- Header --- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 11, 16, 0.85);
  backdrop-filter: saturate(160%) blur(8px);
  -webkit-backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 7px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--fg);
}
.brand .brand-accent { color: var(--accent); }
.site-header nav a {
  color: var(--fg-dim);
  margin-left: 18px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.site-header nav a:hover { color: var(--fg); text-decoration: none; }

/* --- Hero intro --- */
.hero-intro {
  max-width: var(--maxw);
  margin: 16px auto 8px;
  padding: 0 20px;
  text-align: center;
}
.hero-intro h1 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(24px, 3.6vw, 36px);
  margin: 0 0 4px;
  line-height: 1.15;
}
.hero-intro h1 em { color: var(--accent); font-style: italic; }
.hero-intro p {
  color: var(--fg-dim);
  max-width: 720px;
  margin: 0 auto;
  font-size: clamp(14px, 1.3vw, 15px);
}

/* --- Slideshow --- */
.slideshow {
  position: relative;
  max-width: var(--maxw);
  margin: 10px auto 40px;
  padding: 0 20px;
}
.slideshow-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 21 / 9;
  max-height: calc(100vh - 160px);
  background: var(--bg-elev);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.slide {
  position: absolute; inset: 0;
  opacity: 0;
  transition: opacity 700ms ease;
  pointer-events: none;
}
.slide.active { opacity: 1; pointer-events: auto; }
.slide .slide-bg {
  position: absolute; inset: -6%;
  background-size: cover;
  background-position: center;
  filter: blur(28px) saturate(1.1) brightness(0.55);
  transform: scale(1.12);
}
.slide .slide-frame {
  position: absolute; inset: 0;
  overflow: hidden;
}
.slide .slide-img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  z-index: 1;
}
.slide .painting-wrap {
  position: absolute;
  /* top/left/width/height set by JS to match the rendered image box */
  pointer-events: none;
  z-index: 2;
}
.slide::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,0.85) 100%);
  pointer-events: none;
}
.slide .ufo-ring {
  position: absolute;
  border: 2px solid rgba(255, 210, 120, 0.95);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(0,0,0,0.35), 0 0 20px rgba(255, 200, 90, 0.5);
  transform: translate(-50%, -50%);
  pointer-events: none;
  animation: ufo-pulse 2.4s ease-in-out infinite;
  z-index: 2;
  /* width/height set per-instance in JS via % of painting-wrap */
}
@keyframes ufo-pulse {
  0%, 100% { opacity: 0.95; box-shadow: 0 0 0 3px rgba(0,0,0,0.35), 0 0 20px rgba(255, 200, 90, 0.5); }
  50% { opacity: 0.65; box-shadow: 0 0 0 3px rgba(0,0,0,0.35), 0 0 34px rgba(255, 200, 90, 0.85); }
}
.slide-caption {
  position: absolute;
  left: 24px; right: 24px; bottom: 24px;
  z-index: 2;
  color: #fff;
  max-width: 520px;
  background: rgba(10,10,14,0.72);
  backdrop-filter: blur(4px);
  padding: 16px 18px;
  border-radius: 8px;
  border-left: 3px solid var(--accent);
  transform: translateY(10px);
  opacity: 0;
  transition: opacity 500ms ease 200ms, transform 500ms ease 200ms;
}
.slide.active .slide-caption { opacity: 1; transform: translateY(0); }
.slide-caption h2 {
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.4vw, 28px);
  margin: 0 0 4px;
  line-height: 1.2;
}
.slide-caption .meta {
  color: var(--accent);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}
.slide-caption p {
  margin: 0;
  font-size: 14px;
  color: #eae6dc;
  line-height: 1.55;
}
.slide-caption .claim { margin-bottom: 6px; font-style: italic; color: #f2d8a7; }
.slide-caption .fact { color: #eae6dc; }
.slide-caption a.more {
  display: inline-block;
  margin-top: 10px;
  color: var(--accent);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.slide-caption .clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.slide-nav {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px;
  background: rgba(10,10,14,0.55);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; cursor: pointer;
  z-index: 3;
  transition: background 200ms;
}
.slide-nav:hover { background: rgba(10,10,14,0.8); }
.slide-nav.prev { left: 30px; }
.slide-nav.next { right: 30px; }
.slide-dots {
  position: absolute;
  bottom: 12px;
  left: 0; right: 0;
  display: flex; gap: 8px; justify-content: center;
  z-index: 3;
}
.slide-dots button {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.3);
  border: none; padding: 0;
  cursor: pointer;
  transition: background 200ms, transform 200ms;
}
.slide-dots button.active { background: var(--accent); transform: scale(1.3); }

/* --- Section heading --- */
.section-heading {
  max-width: var(--maxw);
  margin: 60px auto 20px;
  padding: 0 20px;
  text-align: center;
}
.section-heading h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.5vw, 38px);
  margin: 0 0 6px;
}
.section-heading p {
  color: var(--fg-dim);
  max-width: 640px;
  margin: 0 auto;
  font-size: 15px;
}

/* --- Filter bar --- */
.filter-bar {
  max-width: var(--maxw);
  margin: 20px auto;
  padding: 0 20px;
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
}
.filter-bar button {
  font-family: var(--font-sans);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-dim);
  background: transparent;
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 200ms;
}
.filter-bar button:hover { color: var(--fg); border-color: var(--fg-dim); }
.filter-bar button.active { background: var(--accent); color: #1a1308; border-color: var(--accent); }

/* --- Gallery grid --- */
.gallery {
  max-width: var(--maxw);
  margin: 0 auto 80px;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.card {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: transform 250ms ease, border-color 250ms ease, box-shadow 250ms ease;
  display: block;
  color: inherit;
  text-decoration: none;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  text-decoration: none;
}
.card .thumb {
  width: 100%;
  aspect-ratio: 1 / 1;
  background-size: cover;
  background-position: center;
  background-color: #000;
  position: relative;
}
.card .thumb::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.85));
  opacity: 0.6;
  transition: opacity 250ms;
}
.card:hover .thumb::after { opacity: 0.25; }
.card .card-body {
  padding: 10px 12px;
}
.card h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 2px;
  line-height: 1.25;
  color: var(--fg);
}
.card .card-meta {
  font-size: 12px;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Hover tooltip — desktop only */
.card .tooltip {
  position: absolute;
  inset: auto 12px 64px;
  background: rgba(10, 10, 14, 0.94);
  border-left: 3px solid var(--accent);
  color: #f0ebe0;
  font-size: 13px;
  line-height: 1.5;
  padding: 10px 12px;
  border-radius: 6px;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 200ms, transform 200ms;
  pointer-events: none;
}
@media (hover: hover) {
  .card:hover .tooltip { opacity: 1; transform: translateY(0); }
}

/* --- Lightbox --- */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.92);
  display: none;
  align-items: center; justify-content: center;
  z-index: 100;
  padding: 20px;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 92vw; max-height: 82vh;
  object-fit: contain;
  box-shadow: 0 20px 60px rgba(0,0,0,0.8);
  border-radius: 6px;
}
.lightbox .lb-info {
  position: absolute;
  bottom: 16px; left: 20px; right: 20px;
  color: #fff;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 16px;
}
.lightbox .lb-info .meta { color: var(--fg-dim); font-size: 13px; font-family: var(--font-sans); }
.lightbox .lb-close {
  position: absolute; top: 16px; right: 20px;
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  color: #fff; font-size: 22px; line-height: 1;
  cursor: pointer;
}

/* --- Painting detail page --- */
.detail-wrap {
  max-width: 760px;
  margin: 40px auto 80px;
  padding: 0 20px;
}
.back-link {
  display: inline-block;
  font-size: 13px;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 18px;
}
.back-link:hover { color: var(--accent); text-decoration: none; }
.detail-header {
  margin-bottom: 28px;
}
.detail-header .meta {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  margin-bottom: 6px;
}
.detail-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.5vw, 44px);
  margin: 0 0 6px;
  line-height: 1.15;
}
.detail-header .artist {
  color: var(--fg-dim);
  font-family: var(--font-serif);
  font-size: 18px;
  font-style: italic;
}
.detail-image {
  width: 100%;
  max-height: 72vh;
  object-fit: contain;
  background: #000;
  border-radius: var(--radius);
  margin: 20px 0 30px;
  box-shadow: var(--shadow);
}
.detail-columns {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.claim-box, .fact-box {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 22px 28px;
  border: 1px solid var(--border);
  font-size: 16px;
  line-height: 1.65;
}
.claim-box { border-left: 3px solid var(--danger); }
.fact-box { border-left: 3px solid var(--accent); }
.claim-box h3, .fact-box h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  margin: 0 0 10px;
  color: var(--fg);
}
.claim-box h3 span { color: var(--danger); }
.fact-box h3 span { color: var(--accent); }
.claim-box p { margin: 0; color: #eae6dc; }
.fact-box p { margin: 0; color: #eae6dc; }
.fact-box p + p { margin-top: 14px; }
.inline-figure {
  margin: 8px 0 10px;
  padding: 0;
  text-align: center;
}
.inline-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
  background: #000;
}
.inline-figure figcaption {
  font-family: var(--font-sans);
  font-size: 14px;
  font-style: normal;
  color: #d6d1c3;
  margin-top: 8px;
  line-height: 1.5;
  letter-spacing: 0.01em;
}
.inline-figure a { color: inherit; text-decoration: none; display: block; }
.inline-figure a:hover img { outline: 2px solid var(--accent); }
.inline-figure a:hover figcaption { color: var(--accent); }
@media (min-width: 640px) {
  .inline-figure.inline-right { float: right; clear: right; width: 45%; max-width: 340px; margin: 4px 0 12px 24px; }
  .inline-figure.inline-left  { float: left;  clear: left;  width: 45%; max-width: 340px; margin: 4px 24px 12px 0; }
  .inline-figure.inline-full  { width: 100%; margin: 18px 0; }
}
.fact-box::after { content: ""; display: block; clear: both; }
.sources-box {
  margin-top: 20px;
  padding: 18px 24px;
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 14px;
  color: var(--fg-dim);
}
.sources-box h4 {
  font-family: var(--font-sans);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin: 0 0 10px;
  font-weight: 600;
}
.sources-box ul { margin: 0; padding-left: 18px; }
.sources-box li { margin: 4px 0; }
.sources-box a { color: var(--fg); text-decoration: underline; text-decoration-color: rgba(212,162,76,0.4); }
.sources-box a:hover { color: var(--accent); }

.hover-summary {
  max-width: 820px;
  margin: 0 auto 28px;
  font-family: var(--font-serif);
  font-size: 20px;
  color: #f1e9d4;
  font-style: italic;
  text-align: center;
  line-height: 1.5;
}
.hover-summary::before { content: "“"; color: var(--accent); margin-right: 4px; }
.hover-summary::after { content: "”"; color: var(--accent); margin-left: 4px; }

/* --- Related grid --- */
.related {
  margin-top: 50px;
}
.related h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  margin-bottom: 14px;
  text-align: center;
}
.related .gallery { margin: 0; padding: 0; }

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 30px 20px;
  text-align: center;
  color: var(--fg-dim);
  font-size: 13px;
}
.site-footer a { color: var(--fg-dim); }
.site-footer a:hover { color: var(--accent); }

/* --- Small screens --- */
@media (max-width: 640px) {
  .slideshow-stage { aspect-ratio: 4 / 5; }
  .slide-caption { left: 12px; right: 12px; bottom: 12px; padding: 12px 14px; }
  .slide-nav { width: 36px; height: 36px; font-size: 18px; }
  .slide-nav.prev { left: 12px; }
  .slide-nav.next { right: 12px; }
  .site-header nav a { margin-left: 10px; font-size: 12px; }
  .gallery { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
  .card .card-body { padding: 8px 10px; }
  .card h3 { font-size: 14px; }
  .hero-intro { margin: 24px auto 10px; }
}