/* ==========================================================================
   MILLYTSAI.COM — Museum-Grade Archival Fine Art Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,400;1,600&family=Great+Vibes&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-canvas: #FAF8F5;
  --bg-card: #FFFFFF;
  --bg-matted: #EDE8E1;
  --bg-toolbar: rgba(28, 27, 26, 0.88);
  
  --text-primary: #1C1B1A;
  --text-secondary: #4A4640;
  --text-muted: #6B665F;
  --text-subtle: #8C877E;
  
  --accent-gold: #9B7E46;
  --accent-gold-hover: #7D6535;
  --status-available: #2E6247;
  --status-sold: #8C877E;
  --status-nfs: #9B7E46;
  
  --border-light: #EAE5DE;
  --border-card: #E5E0D8;
  --border-focus: #1C1B1A;
  
  --font-script: 'Great Vibes', cursive;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.03);
  --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.07);
  --shadow-modal: 0 20px 50px rgba(0, 0, 0, 0.25);
  
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-pill: 24px;
  
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   CSS Reset & Base Rules
   ========================================================================== */

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

/* ==========================================================================
   Typography Utilities
   ========================================================================== */

.script-brand {
  font-family: var(--font-script);
  font-size: 2.75rem;
  line-height: 1.1;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.heading-display {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--text-primary);
}

.subheading-gold {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent-gold);
  text-transform: uppercase;
}

/* ==========================================================================
   Site Header & Navigation
   ========================================================================== */

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2.25rem 5rem;
  width: 100%;
  border-bottom: 1px solid var(--border-light);
  background-color: var(--bg-canvas);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: padding var(--transition-smooth), background-color var(--transition-smooth);
}

.brand-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.brand-wrapper:hover .script-brand {
  color: var(--accent-gold);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2.75rem;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
  padding-bottom: 4px;
  position: relative;
  transition: color var(--transition-fast);
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent-gold);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

/* ==========================================================================
   Main Content Layout
   ========================================================================== */

.site-main {
  flex: 1;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
}

/* ==========================================================================
   Gallery Controls (Filters & Sorting)
   ========================================================================== */

.gallery-intro {
  text-align: center;
  padding: 3rem 2rem 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.gallery-intro h1 {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 400;
  font-style: italic;
  color: var(--text-primary);
}

.gallery-intro p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  max-width: 600px;
}

.gallery-controls-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5rem 2rem 5rem;
  gap: 1.5rem;
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  align-items: center;
}

.filter-btn {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.filter-btn.active {
  background-color: var(--text-primary);
  border-color: var(--text-primary);
  color: #FFFFFF;
  font-weight: 600;
}

.sort-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.sort-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-subtle);
  text-transform: uppercase;
}

.sort-select-box {
  position: relative;
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 0.45rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sort-select {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  border: none;
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  padding-right: 1.25rem;
}

.sort-select-icon {
  position: absolute;
  right: 0.75rem;
  pointer-events: none;
  color: var(--text-muted);
}

/* ==========================================================================
   Fluid Masonry Artwork Grid
   ========================================================================== */

.artwork-masonry-grid {
  display: flex;
  gap: 2.25rem;
  padding: 0 5rem 5rem 5rem;
  width: 100%;
  align-items: flex-start;
}

.masonry-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
  min-width: 0;
}

.art-card {
  width: 100%;
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.art-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-card);
}

.art-card-media {
  position: relative;
  width: 100%;
  background-color: var(--bg-matted);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.art-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.art-card:hover .art-card-media img {
  transform: scale(1.02);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.art-card-media .status-badge {
  position: absolute;
  top: 0.875rem;
  right: 0.875rem;
  z-index: 2;
}

.status-badge.available {
  display: none;
}

.status-badge.sold {
  background-color: var(--status-sold);
  color: #FFFFFF;
}

.status-badge.nfs {
  background-color: var(--status-nfs);
  color: #FFFFFF;
}

.art-card-info {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background-color: var(--bg-card);
}

.art-card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.art-card-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.art-card-venue {
  font-size: 0.78125rem;
  color: var(--accent-gold);
  line-height: 1.35;
  margin-top: 0.3rem;
}

.art-card-exhibition {
  font-size: 0.78125rem;
  font-weight: 500;
  color: var(--accent-gold);
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  margin-top: 0.2rem;
  line-height: 1.35;
}

.art-card-award {
  font-size: 0.78125rem;
  font-weight: 500;
  color: var(--accent-gold);
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  margin-top: 0.2rem;
  line-height: 1.35;
}

.honor-icon {
  flex-shrink: 0;
  margin-top: 2px;
  stroke: var(--accent-gold);
}

.honor-icon-gold {
  flex-shrink: 0;
  margin-top: 2px;
  fill: var(--accent-gold);
}

/* ==========================================================================
   Painting Detail View (/art/[slug].html)
   ========================================================================== */

.detail-showcase-container {
  padding: 2rem 5rem 4rem 5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.breadcrumb-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.breadcrumb-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.breadcrumb-link:hover {
  color: var(--text-primary);
}

.detail-split-layout {
  display: flex;
  gap: 3.5rem;
  align-items: flex-start;
}

.detail-artwork-stage {
  flex: 1.4;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.detail-frame-canvas {
  width: 100%;
  min-height: 520px;
  background-color: var(--bg-matted);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: var(--shadow-hover);
  overflow: hidden;
  cursor: zoom-in;
}

.detail-frame-canvas img {
  max-height: 75vh;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  transition: transform var(--transition-smooth);
}

.floating-zoom-toolbar {
  position: absolute;
  bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  background-color: var(--bg-toolbar);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.zoom-tool-btn {
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition-fast);
}

.zoom-tool-btn:hover {
  color: var(--accent-gold);
}

.zoom-tool-divider {
  color: var(--text-muted);
}

.detail-caption-hint {
  font-size: 0.75rem;
  color: var(--text-subtle);
  text-align: center;
}

.detail-curatorial-panel {
  flex: 1;
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  box-shadow: var(--shadow-subtle);
}

.detail-header-block {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.detail-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.15;
}

.detail-medium-dim {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.detail-divider {
  width: 100%;
  height: 1px;
  background-color: var(--border-light);
  border: none;
}

.detail-section-block {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.detail-section-title {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.detail-section-body {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.detail-section-sub {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Inquire CTA */
.btn-inquire {
  display: block;
  width: 100%;
  background-color: var(--text-primary);
  color: var(--bg-canvas);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  margin-top: 0.5rem;
}

.btn-inquire:hover {
  background-color: var(--accent-gold);
  color: #FFFFFF;
}

.inquire-subtext {
  font-size: 0.75rem;
  color: var(--text-subtle);
  text-align: center;
}

/* Adjacent Artwork Navigation */
.adjacent-nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 5rem 4rem 5rem;
  border-top: 1px solid var(--border-light);
}

.adjacent-nav-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: opacity var(--transition-fast);
}

.adjacent-nav-link:hover {
  opacity: 0.8;
}

.adjacent-thumb {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-matted);
  border: 1px solid var(--border-card);
  object-fit: cover;
}

.adjacent-text-group {
  display: flex;
  flex-direction: column;
}

.adjacent-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent-gold);
  text-transform: uppercase;
}

.adjacent-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ==========================================================================
   Biography & Awards Pages (/bio.html, /awards.html)
   ========================================================================== */

.bio-layout-container {
  padding: 3.5rem 5rem 6rem 5rem;
  display: flex;
  gap: 4.5rem;
  align-items: flex-start;
}

.bio-sidebar-card {
  width: 340px;
  flex-shrink: 0;
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
}

.bio-portrait-frame {
  width: 100%;
  height: 360px;
  background-color: var(--bg-matted);
  overflow: hidden;
}

.bio-portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bio-sidebar-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.bio-artist-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.bio-memberships {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.bio-membership-item {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent-gold);
}

.bio-membership-cac {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

.bio-main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.bio-english-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.bio-english-section h1 {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 500;
  line-height: 1.2;
}

.bio-prose {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.bio-chinese-section {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.bio-chinese-section h2 {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 600;
  color: var(--text-primary);
}

.bio-chinese-prose {
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.awards-table-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.award-row {
  display: flex;
  gap: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
}

.award-year {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-gold);
  width: 60px;
  flex-shrink: 0;
}

.award-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.award-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.award-venue {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Deep Zoom Modal Overlay
   ========================================================================== */

.zoom-modal,
.zoom-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(20, 19, 18, 0.96);
  z-index: 1000;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(12px);
}

.zoom-modal.active,
.zoom-modal-backdrop.active {
  display: flex;
}

.zoom-modal-header {
  position: absolute;
  top: 1.5rem;
  left: 2rem;
  right: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1010;
}

.zoom-modal-title {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--accent-gold);
}

.zoom-modal-stage {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 4rem 2rem 2rem 2rem;
}

.zoom-modal-img,
.zoom-image-target {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  box-shadow: var(--shadow-modal);
  cursor: grab;
  user-select: none;
  transition: transform 0.1s ease-out;
}

.zoom-modal-img:active,
.zoom-image-target:active {
  cursor: grabbing;
}

.zoom-close-btn,
.zoom-modal-close {
  color: #FFFFFF;
  font-size: 1.5rem;
  z-index: 1010;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transition: background var(--transition-fast);
  cursor: pointer;
}

.zoom-close-btn:hover,
.zoom-modal-close:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* ==========================================================================
   Site Footer
   ========================================================================== */

.site-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2.75rem 2rem;
  width: 100%;
  border-top: 1px solid var(--border-light);
  background-color: var(--bg-canvas);
  text-align: center;
  margin-top: auto;
}

.footer-copyright {
  font-size: 0.75rem;
  color: var(--text-subtle);
  letter-spacing: 0.04em;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 1100px) {
  .site-header {
    padding: 1.75rem 2.5rem;
  }
  .gallery-controls-bar, .artwork-masonry-grid, .detail-showcase-container, .adjacent-nav-bar, .bio-layout-container {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
  .artwork-masonry-grid {
    gap: 1.75rem;
  }
  .masonry-column {
    gap: 1.75rem;
  }
  .detail-split-layout {
    flex-direction: column;
  }
  .detail-artwork-stage, .detail-curatorial-panel {
    width: 100%;
  }
  .bio-layout-container {
    flex-direction: column;
  }
  .bio-sidebar-card {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 1.25rem 1.5rem;
  }
  .script-brand {
    font-size: 2.1rem;
  }
  .main-nav {
    display: none; /* hidden until hamburger clicked */
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-canvas);
    flex-direction: column;
    padding: 1.5rem 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-hover);
  }
  .main-nav.mobile-open {
    display: flex;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .gallery-controls-bar {
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem;
    gap: 1rem;
  }
  .artwork-masonry-grid {
    gap: 1.5rem;
    padding: 0 1.5rem 3rem 1.5rem;
  }
  .masonry-column {
    gap: 1.5rem;
  }
  .detail-showcase-container, .adjacent-nav-bar, .bio-layout-container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
  .adjacent-nav-bar {
    flex-direction: column;
    gap: 1.5rem;
    align-items: flex-start;
  }
}