/* ============================================
   Gallery Corridor — 画廊长廊
   美术馆沉浸式体验 × 大幅图片宽边框 × 中性背景 × 极简导航
   ============================================ */

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

/* ===== CSS Variables ===== */
:root {
  --wall: #e8e4de;
  --wall-light: #f0ece6;
  --wall-dark: #d9d4cc;
  --frame: #ffffff;
  --frame-shadow: rgba(0, 0, 0, 0.12);
  --frame-border: #c8c2b8;
  --text-primary: #2c2824;
  --text-secondary: #5c564e;
  --text-muted: #8a8378;
  --text-light: #b0a898;
  --accent: #8b6f4e;
  --accent-dark: #6b5338;
  --accent-subtle: rgba(139, 111, 78, 0.08);
  --plaque-bg: #2c2824;
  --plaque-text: #d4cfc7;
  --corridor-width: 1400px;
  --frame-padding: 20px;
  --section-gap: 80px;
  --font-body: 'Inter', Georgia, 'Times New Roman', serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: Georgia, 'Times New Roman', serif;
}

/* ===== Body — 画廊墙壁 ===== */
body {
  font-family: var(--font-body);
  background: var(--wall);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0,0,0,0.008) 2px,
      rgba(0,0,0,0.008) 4px
    );
}

/* ===== Navigation — 极简导航 ===== */
.gc-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 56px;
  background: rgba(44, 40, 36, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.3s;
}
.gc-nav.gc-nav-hidden {
  transform: translateY(-100%);
}
.gc-nav-inner {
  max-width: var(--corridor-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 40px;
  gap: 32px;
}
.gc-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.gc-logo-mark {
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--plaque-text);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--plaque-text);
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 400;
  font-style: italic;
}
.gc-logo-text {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 400;
  font-style: italic;
  color: var(--plaque-text);
  letter-spacing: 1px;
}
.gc-nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
}
.gc-nav-links a {
  text-decoration: none;
  color: rgba(212, 207, 199, 0.6);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: color 0.3s;
}
.gc-nav-links a:hover { color: var(--plaque-text); }
.gc-nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.gc-search-btn {
  width: 32px;
  height: 32px;
  background: none;
  border: 1px solid rgba(212, 207, 199, 0.2);
  border-radius: 2px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(212, 207, 199, 0.5);
  transition: all 0.3s;
}
.gc-search-btn:hover {
  border-color: rgba(212, 207, 199, 0.5);
  color: var(--plaque-text);
}
.gc-search-btn svg { width: 14px; height: 14px; }
.gc-mobile-menu-btn {
  display: none;
  width: 32px;
  height: 32px;
  background: none;
  border: 1px solid rgba(212, 207, 199, 0.2);
  border-radius: 2px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  padding: 8px;
}
.gc-mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 1px;
  background: rgba(212, 207, 199, 0.5);
  transition: all 0.3s;
}

/* ===== Search Overlay ===== */
.gc-search-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(44, 40, 36, 0.92);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 14vh;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
}
.gc-search-overlay.active {
  opacity: 1;
  pointer-events: all;
}
.gc-search-overlay-inner {
  width: 100%;
  max-width: 600px;
  background: var(--wall-light);
  border: 1px solid var(--frame-border);
  padding: 28px;
  position: relative;
  max-height: 70vh;
  overflow-y: auto;
}
.gc-search-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 22px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
}
.gc-search-close:hover { color: var(--text-primary); }
.gc-search-box {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--frame-border);
  padding-bottom: 14px;
  margin-bottom: 14px;
}
.gc-search-box svg {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  flex-shrink: 0;
}
.gc-search-input {
  width: 100%;
  border: none;
  outline: none;
  font-size: 16px;
  font-family: var(--font-serif);
  background: transparent;
  color: var(--text-primary);
}
.gc-search-input::placeholder { color: var(--text-light); }
.gc-search-results { display: flex; flex-direction: column; gap: 4px; }
.gc-search-result-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 8px;
  text-decoration: none;
  color: inherit;
  transition: background 0.2s;
}
.gc-search-result-item:hover { background: var(--accent-subtle); }
.gc-search-result-thumb {
  width: 52px;
  height: 36px;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--frame-border);
}
.gc-search-result-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.gc-search-result-info { flex: 1; min-width: 0; }
.gc-search-result-cat {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2px;
}
.gc-search-result-title {
  font-size: 13px;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--font-serif);
}
.gc-search-empty {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 14px;
  font-style: italic;
}

/* ===== Corridor Entrance — 入口 ===== */
.gc-entrance {
  padding-top: 56px;
}
.gc-entrance-inner {
  max-width: var(--corridor-width);
  margin: 0 auto;
  padding: 80px 40px 40px;
  text-align: center;
}
.gc-entrance-title {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 400;
  font-style: italic;
  color: var(--text-primary);
  letter-spacing: 1px;
  line-height: 1.2;
  margin-bottom: 16px;
}
.gc-entrance-subtitle {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 300;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ===== Featured Painting — 主展品 ===== */
.gc-featured {
  max-width: var(--corridor-width);
  margin: 0 auto;
  padding: 0 40px;
}
.gc-featured-frame {
  background: var(--frame);
  padding: var(--frame-padding);
  border: 1px solid var(--frame-border);
  box-shadow:
    0 2px 8px var(--frame-shadow),
    0 8px 32px rgba(0, 0, 0, 0.06),
    inset 0 0 0 1px rgba(255,255,255,0.8);
  display: block;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.4s, transform 0.4s;
}
.gc-featured-frame:hover {
  box-shadow:
    0 4px 16px var(--frame-shadow),
    0 16px 48px rgba(0, 0, 0, 0.1),
    inset 0 0 0 1px rgba(255,255,255,0.8);
  transform: translateY(-2px);
}
.gc-featured-img {
  width: 100%;
  aspect-ratio: 21/9;
  overflow: hidden;
  background: var(--wall-dark);
}
.gc-featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s;
}
.gc-featured-frame:hover .gc-featured-img img {
  transform: scale(1.02);
}
.gc-featured-plaque {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 20px 0 4px;
}
.gc-featured-plaque-text {
  text-align: center;
}
.gc-featured-tag {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.gc-featured-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 400;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 8px;
}
.gc-featured-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
}

/* ===== Gallery Room — 展厅 ===== */
.gc-room {
  max-width: var(--corridor-width);
  margin: 0 auto;
  padding: 0 40px;
}
.gc-room-header {
  text-align: center;
  padding: var(--section-gap) 0 40px;
}
.gc-room-number {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 8px;
}
.gc-room-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 400;
  font-style: italic;
  color: var(--text-primary);
  letter-spacing: 1px;
}
.gc-room-divider {
  width: 60px;
  height: 1px;
  background: var(--frame-border);
  margin: 16px auto 0;
}

/* ===== Gallery Wall — 展墙（网格布局） ===== */
.gc-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-bottom: var(--section-gap);
}

/* ===== Painting Card — 画作卡片 ===== */
.gc-painting {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform 0.4s;
}
.gc-painting:hover {
  transform: translateY(-4px);
}
.gc-painting-frame {
  background: var(--frame);
  padding: var(--frame-padding);
  border: 1px solid var(--frame-border);
  box-shadow:
    0 2px 8px var(--frame-shadow),
    0 4px 16px rgba(0, 0, 0, 0.04),
    inset 0 0 0 1px rgba(255,255,255,0.8);
  transition: box-shadow 0.4s;
}
.gc-painting:hover .gc-painting-frame {
  box-shadow:
    0 4px 16px var(--frame-shadow),
    0 8px 32px rgba(0, 0, 0, 0.08),
    inset 0 0 0 1px rgba(255,255,255,0.8);
}
.gc-painting-img {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--wall-dark);
}
.gc-painting-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}
.gc-painting:hover .gc-painting-img img {
  transform: scale(1.03);
}
.gc-painting-plaque {
  padding: 14px 4px 4px;
  text-align: center;
}
.gc-painting-tag {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.gc-painting-title {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 400;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.gc-painting-excerpt {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Large Painting — 大幅画作（2列宽） ===== */
.gc-painting-lg {
  grid-column: span 2;
}
.gc-painting-lg .gc-painting-img {
  aspect-ratio: 16/9;
}
.gc-painting-lg .gc-painting-title {
  font-size: 18px;
}

/* ===== Corridor Separator — 走廊分隔 ===== */
.gc-separator {
  max-width: var(--corridor-width);
  margin: 0 auto;
  padding: 0 40px;
}
.gc-separator-line {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--frame-border) 20%,
    var(--frame-border) 80%,
    transparent 100%
  );
}

/* ===== Ad Slot ===== */
.gc-ad-slot {
  text-align: center;
  padding: 16px;
  display: flex;
  justify-content: center;
}

/* ===== Footer — 展馆出口 ===== */
.gc-footer {
  background: var(--plaque-bg);
  color: rgba(212, 207, 199, 0.7);
  margin-top: var(--section-gap);
}
.gc-footer-inner {
  max-width: var(--corridor-width);
  margin: 0 auto;
  padding: 56px 40px 32px;
}
.gc-footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.gc-footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.gc-footer-brand-mark {
  width: 24px;
  height: 24px;
  border: 1px solid rgba(212, 207, 199, 0.3);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--plaque-text);
  font-family: var(--font-serif);
  font-size: 12px;
  font-style: italic;
}
.gc-footer-brand-text {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 400;
  font-style: italic;
  color: var(--plaque-text);
  letter-spacing: 1px;
}
.gc-footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(212, 207, 199, 0.4);
}
.gc-footer-heading {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(212, 207, 199, 0.3);
  margin-bottom: 16px;
}
.gc-footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.gc-footer-links a {
  color: rgba(212, 207, 199, 0.5);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.3s;
  font-style: italic;
}
.gc-footer-links a:hover { color: var(--plaque-text); }
.gc-footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(212, 207, 199, 0.08);
  font-size: 12px;
  color: rgba(212, 207, 199, 0.25);
  letter-spacing: 1px;
}

/* ===== Detail Page ===== */
.gc-detail {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 40px 80px;
}
.gc-detail-back { margin-bottom: 24px; }
.gc-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
  font-style: italic;
  transition: gap 0.2s;
}
.gc-back-link:hover { gap: 12px; }
.gc-back-link svg { width: 14px; height: 14px; }
.gc-detail-hero-img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  margin-bottom: 32px;
  background: var(--frame);
  padding: var(--frame-padding);
  border: 1px solid var(--frame-border);
  box-shadow: 0 4px 16px var(--frame-shadow);
}
.gc-detail-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 12px;
  margin-bottom: 16px;
}
.gc-detail-title {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 400;
  font-style: italic;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.gc-detail-body {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
}
.gc-detail-body p { margin-bottom: 18px; }
.gc-detail-body strong { color: var(--text-primary); font-weight: 600; }
.gc-detail-body h2, .gc-detail-body h3 {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-primary);
  margin-top: 32px;
  margin-bottom: 12px;
}
.gc-detail-body h2 { font-size: 22px; }
.gc-detail-body h3 { font-size: 18px; }
.gc-detail-body ul, .gc-detail-body ol { margin: 12px 0 12px 24px; }
.gc-detail-body li { margin-bottom: 6px; }
.gc-detail-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.gc-detail-media {
  margin: 32px 0;
  background: var(--frame);
  padding: var(--frame-padding);
  border: 1px solid var(--frame-border);
  box-shadow: 0 4px 16px var(--frame-shadow);
}
.gc-detail-media img { width: 100%; display: block; }

/* ===== Related Section ===== */
.gc-related {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--frame-border);
}
.gc-related-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 400;
  font-style: italic;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.gc-related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.gc-related-card {
  background: var(--frame);
  border: 1px solid var(--frame-border);
  padding: 12px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 2px 8px var(--frame-shadow);
}
.gc-related-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 16px var(--frame-shadow);
}
.gc-related-card-img {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--wall-dark);
}
.gc-related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.gc-related-card:hover .gc-related-card-img img {
  transform: scale(1.03);
}
.gc-related-card-title {
  padding: 10px 4px 4px;
  font-family: var(--font-serif);
  font-size: 13px;
  font-style: italic;
  line-height: 1.4;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: center;
}

/* ===== Static Page ===== */
.gc-static {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 40px 80px;
}
.gc-static-title {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 400;
  font-style: italic;
  color: var(--text-primary);
  margin-bottom: 32px;
}
.gc-static-content {
  background: var(--frame);
  border: 1px solid var(--frame-border);
  padding: 40px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
  box-shadow: 0 2px 8px var(--frame-shadow);
}
.gc-static-content p { margin-bottom: 14px; }
.gc-static-content strong { color: var(--text-primary); font-weight: 600; }
.gc-static-content ul, .gc-static-content ol { margin: 10px 0 10px 24px; }
.gc-static-content li { margin-bottom: 6px; }
.gc-static-content a { color: var(--accent); text-decoration: underline; }
.gc-static-content h2, .gc-static-content h3, .gc-static-content h4 {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-primary);
  margin-top: 24px;
  margin-bottom: 10px;
}
.gc-static-content h2 { font-size: 20px; }
.gc-static-content h3 { font-size: 17px; }

/* ===== Reveal Animation ===== */
.gc-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.gc-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .gc-wall { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .gc-painting-lg { grid-column: span 2; }
  .gc-entrance-title { font-size: 38px; }
  .gc-related-grid { grid-template-columns: repeat(3, 1fr); }
  .gc-footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --frame-padding: 14px; --section-gap: 56px; }
  .gc-nav-inner { padding: 0 20px; }
  .gc-nav-links { display: none; }
  .gc-mobile-menu-btn { display: flex; }
  .gc-entrance-inner { padding: 56px 20px 28px; }
  .gc-entrance-title { font-size: 30px; }
  .gc-featured { padding: 0 20px; }
  .gc-room { padding: 0 20px; }
  .gc-wall { grid-template-columns: 1fr; gap: 24px; }
  .gc-painting-lg { grid-column: span 1; }
  .gc-featured-img { aspect-ratio: 16/9; }
  .gc-featured-title { font-size: 20px; }
  .gc-room-title { font-size: 22px; }
  .gc-related-grid { grid-template-columns: repeat(2, 1fr); }
  .gc-footer-top { grid-template-columns: 1fr; gap: 32px; }
  .gc-footer-inner { padding: 40px 20px 24px; }
  .gc-detail { padding: 20px 20px 60px; }
  .gc-detail-title { font-size: 26px; }
  .gc-static { padding: 20px 20px 60px; }
  .gc-static-content { padding: 24px; }
  .gc-separator { padding: 0 20px; }
}

@media (max-width: 480px) {
  .gc-entrance-title { font-size: 24px; }
  .gc-featured-title { font-size: 18px; }
  .gc-related-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .gc-detail-title { font-size: 22px; }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--wall-dark); }
::-webkit-scrollbar-thumb { background: var(--frame-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-light); }

::selection { background: rgba(139, 111, 78, 0.15); color: var(--text-primary); }