/* Theme System — Unified --color-* Design Tokens (#254) */

/* ── Light defaults ── */
:root {
  /* Surfaces */
  --color-bg: #ffffff;
  --color-bg-alt: #fafbfd;
  --color-surface: #ffffff;
  --color-surface-raised: #ffffff;
  --color-surface-sunken: #f1f5f9;
  --color-overlay: #ffffff;

  /* Text */
  --color-text: #111827;
  --color-text-secondary: #4b5563;
  --color-text-muted: #6b7280;
  --color-text-faint: #9ca3af;
  --color-text-on-dark: #ffffff;
  --color-text-on-inverted: #f9fafb;

  /* Borders */
  --color-border: #e5e7eb;
  --color-border-strong: #d1d5db;
  --color-border-subtle: #f3f4f6;
  --color-divide: #e5e7eb;

  /* Interactive */
  --color-hover: #f9fafb;
  --color-active: #f3f4f6;
  --color-input-bg: #ffffff;
  --color-input-border: #d1d5db;

  /* Accent */
  --color-accent: #667eea;
  --color-accent-text: #ffffff;

  /* Nav */
  --color-nav-bg: #ffffff;
  --color-nav-text: #374151;

  /* Status */
  --color-success: #059669;
  --color-success-bg: #ecfdf5;
  --color-success-text: #065f46;
  --color-warning: #d97706;
  --color-warning-bg: #fffbeb;
  --color-warning-text: #92400e;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --color-error-text: #991b1b;
  --color-info: #2563eb;
  --color-info-bg: #eff6ff;
  --color-info-text: #1e40af;

  /* Sidebar */
  --color-sidebar-bg: #ffffff;
  --color-sidebar-text: #374151;
  --color-sidebar-hover: rgba(0, 0, 0, 0.04);
  --color-sidebar-active: rgba(102, 126, 234, 0.1);

  /* Portfolio layout */
  --portfolio-gap: 20px;
  --portfolio-radius: 8px;
  --portfolio-cols: 3;
  --card-overlay-bg: rgba(255,255,255,0.92);
  --filter-bg: var(--color-surface);

  /* Glass (light mode) */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.8);
  --glass-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
}

/* ── Base styles ── */
body {
  color: var(--color-text);
  background: #ffffff;
  background-attachment: fixed;
}

/* ── Global form element styling ── */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="search"],
input[type="url"],
input[type="tel"],
input[type="date"],
textarea,
select {
  background-color: var(--color-input-bg) !important;
  color: var(--color-text) !important;
  border: 1px solid var(--color-input-border) !important;
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
  outline: none;
}

/* ── Dark mode overrides ── */
html.dark {
  --color-bg: #080c1a;
  --color-bg-alt: #0c1027;
  --color-surface: rgba(255, 255, 255, 0.05);
  --color-surface-raised: rgba(255, 255, 255, 0.08);
  --color-surface-sunken: rgba(0, 0, 0, 0.2);
  --color-overlay: rgba(15, 20, 50, 0.95);
  --color-text: #e2e8f0;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-text-faint: #475569;
  --color-text-on-inverted: #111827;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-strong: rgba(255, 255, 255, 0.15);
  --color-border-subtle: rgba(255, 255, 255, 0.05);
  --color-divide: rgba(255, 255, 255, 0.08);
  --color-hover: rgba(255, 255, 255, 0.08);
  --color-active: rgba(255, 255, 255, 0.12);
  --color-input-bg: rgba(0, 0, 0, 0.3);
  --color-input-border: rgba(255, 255, 255, 0.15);
  --color-accent: #818cf8;
  --color-nav-bg: rgba(8, 12, 26, 0.8);
  --color-nav-text: #e2e8f0;
  --color-success: #34d399;
  --color-success-bg: rgba(5, 78, 59, 0.5);
  --color-success-text: #6ee7b7;
  --color-warning: #fbbf24;
  --color-warning-bg: rgba(120, 53, 15, 0.5);
  --color-warning-text: #fde68a;
  --color-error: #f87171;
  --color-error-bg: rgba(127, 29, 29, 0.5);
  --color-error-text: #fca5a5;
  --color-info: #60a5fa;
  --color-info-bg: rgba(30, 58, 95, 0.5);
  --color-info-text: #93c5fd;
  --color-sidebar-bg: rgba(8, 12, 26, 0.95);
  --color-sidebar-text: #94a3b8;
  --color-sidebar-hover: rgba(255, 255, 255, 0.06);
  --color-sidebar-active: rgba(129, 140, 248, 0.2);
  --card-overlay-bg: rgba(8, 12, 26, 0.92);
  --filter-bg: rgba(255, 255, 255, 0.05);

  /* Glass (dark mode) */
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Dark mode background gradient */
html.dark body {
  background: linear-gradient(135deg, #080c1a 0%, #0c1533 40%, #131040 70%, #0a0e27 100%);
  background-attachment: fixed;
}

/* Glassmorphism card styles for dark mode */
html.dark .card,
html.dark .bg-surface,
html.dark [class*="bg-surface"]:not(.bg-surface-sunken) {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* Light mode cards get clean shadow */
.card,
.bg-surface,
[class*="bg-surface"]:not(.bg-surface-sunken) {
  box-shadow: var(--glass-shadow);
}

/* Dark mode inputs - frosted glass effect */
html.dark input[type="text"],
html.dark input[type="email"],
html.dark input[type="password"],
html.dark input[type="number"],
html.dark input[type="search"],
html.dark input[type="url"],
html.dark input[type="tel"],
html.dark input[type="date"],
html.dark textarea,
html.dark select {
  background-color: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

html.dark input:focus,
html.dark textarea:focus,
html.dark select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
}


/* ── Portfolio theme overrides ── */

/* Minimal: Gallery-white. Art is everything. Serif headings, lots of air. */
.theme-minimal {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text-muted: #6b7280;
  --color-text: #111827;
  --color-accent: #111827;
  --color-accent-text: #ffffff;
  --color-nav-bg: #fafafa;
  --color-nav-text: #111827;
  --color-nav-border: 1px solid #e5e7eb;
  --portfolio-cols: 3;
  --card-overlay-bg: rgba(255,255,255,0.92);
  --filter-bg: var(--color-surface);
}

/* Gallery: Dark exhibition space. Artworks float on darkness. Dramatic. */
.theme-gallery {
  --color-bg: #111111;
  --color-surface: #1a1a1a;
  --color-text-muted: #9ca3af;
  --color-text: #f9fafb;
  --color-accent: #d4a853;
  --color-accent-text: #111111;
  --color-nav-bg: #111111;
  --color-nav-text: #f9fafb;
  --color-nav-border: none;
  --color-nav-bg-dark: #0a0a0a;
  --portfolio-cols: 4;
  --card-overlay-bg: rgba(0,0,0,0.85);
  --filter-bg: #1a1a1a;
}

/* Bold: Editorial confidence. Heavy type, high contrast. */
.theme-bold {
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-text-muted: #4b5563;
  --color-text: #111827;
  --color-accent: #111827;
  --color-accent-text: #ffffff;
  --color-nav-bg: #ffffff;
  --color-nav-text: #111827;
  --color-nav-border: none;
  --color-nav-border-bottom: 4px solid #111827;
  --color-nav-bg-dark: #111827;
  --portfolio-radius: 0px;
  --card-overlay-bg: rgba(255,255,255,0.92);
  --filter-bg: #f9fafb;
}

/* Base theme application */
html[class*="theme-"] {
  --accent: var(--color-accent);
}

/* ── Dark mode theme overrides ── */

/* Minimal: invert light theme to dark */
html.dark.theme-minimal {
  --color-bg: #111827;
  --color-surface: #1f2937;
  --color-text-muted: #9ca3af;
  --color-text: #f9fafb;
  --color-accent: #f9fafb;
  --color-accent-text: #111827;
  --color-nav-bg: #111827;
  --color-nav-text: #f9fafb;
  --color-nav-border: 1px solid #374151;
  --filter-bg: #1f2937;
  --card-overlay-bg: rgba(17,24,39,0.92);
}

/* Gallery: already dark, minor refinements */
html.dark.theme-gallery {
  --color-bg: #0a0a0a;
  --color-surface: #111111;
  --color-accent-text: #111111;
  --color-nav-bg: #0a0a0a;
  --filter-bg: #111111;
  --card-overlay-bg: rgba(0,0,0,0.9);
}

/* Bold: invert light theme to dark */
html.dark.theme-bold {
  --color-bg: #111827;
  --color-surface: #1f2937;
  --color-text-muted: #9ca3af;
  --color-text: #f9fafb;
  --color-accent: #f9fafb;
  --color-accent-text: #111827;
  --color-nav-bg: #111827;
  --color-nav-text: #f9fafb;
  --color-nav-border-bottom: 4px solid #f9fafb;
  --filter-bg: #1f2937;
  --card-overlay-bg: rgba(17,24,39,0.92);
}

html[class*="theme-"] body {
  background: var(--color-bg);
  color: var(--color-text);
}

html[class*="theme-"] nav {
  background: var(--color-nav-bg);
  border-bottom: var(--color-nav-border, none);
  color: var(--color-nav-text, inherit);
}

html[class*="theme-"] nav a,
html[class*="theme-"] nav button {
  color: var(--color-nav-text, inherit);
}

html.dark[class*="theme-"] nav {
  background: var(--color-nav-bg-dark);
}

.theme-bold nav {
  border-bottom: var(--color-nav-border-bottom, none);
}

/* ── Page header ── */
.page-header { text-align: center; margin: 2rem 0; }
.page-header h1 { font-size: 2.5rem; margin-bottom: 0.5rem; color: var(--color-text); }
.page-header .subtitle { font-size: 1.2rem; color: var(--color-text-muted); }

/* ── Filter bar (#145) ── */
.portfolio-filter-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--filter-bg);
  margin: 1.5rem 0;
  border: 1px solid rgba(128,128,128,0.15);
  border-radius: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.filter-pills {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.filter-pill {
  padding: 0.375rem 1rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1.5px solid var(--color-accent);
  color: var(--color-accent);
  background: transparent;
  cursor: pointer;
  transition: all 150ms ease;
  white-space: nowrap;
}

.filter-pill:hover {
  background: var(--color-accent);
  color: var(--color-surface);
}

.filter-pill-active {
  background: var(--color-accent) !important;
  color: var(--color-surface) !important;
}

.filter-dropdowns {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.filter-select {
  padding: 0.375rem 0.75rem;
  border: 1px solid rgba(128,128,128,0.3);
  border-radius: 6px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.8125rem;
}

/* ── Grid (#145) ── */
.gallery-container-wrapper { padding: 2rem 0; }

.gal {
  column-count: var(--portfolio-cols, 4);
  column-gap: var(--portfolio-gap);
}
@media (max-width: 1200px) { .gal { column-count: 3; } }
@media (max-width: 768px) { .gal { column-count: 2; } }
@media (max-width: 500px) { .gal { column-count: 1; } }

/* ── Cards (#145) ── */
.gallery-link { text-decoration: none; color: inherit; display: block; }

.gallery-container {
  margin: 0 0 var(--portfolio-gap) 0;
  position: relative;
  break-inside: avoid;
  overflow: hidden;
  background: var(--color-surface);
  border-radius: var(--portfolio-radius);
  cursor: pointer;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.gallery-container img {
  width: 100%;
  display: block;
  transition: transform 200ms ease;
}

.gallery-link:hover .gallery-container {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.gallery-link:hover .gallery-container img {
  transform: scale(1.05);
}

/* Focus-visible for keyboard users */
.gallery-link:focus-visible .gallery-container {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Status badges — bottom-left (#145) */
.status-badge-bl {
  position: absolute;
  bottom: 8px;
  left: 8px;
  background: white;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  z-index: 2;
}

.status-badge-bl.sold-badge { color: #dc3545; }
.status-badge-bl.status-consignment { color: #ffc107; }
.status-badge-bl.status-nfs { color: #6c757d; }

/* Gallery theme: dark badges */
.theme-gallery .status-badge-bl { background: #1a1a1a; }
.theme-gallery .status-badge-bl.sold-badge { color: #f87171; }

/* Art info overlay */
.art-info {
  opacity: 0;
  position: absolute;
  width: 100%;
  height: 100%;
  background: var(--card-overlay-bg);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  text-align: center;
  transition: opacity 200ms ease;
}

.gallery-container:hover .art-info { opacity: 1; }

.artwork-name {
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1.2;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.artwork-details { font-size: 0.875rem; color: var(--color-text-muted); }

.edition-badge { background: #e3f2fd; color: #1976d2; padding: 2px 6px; border-radius: 3px; font-size: 0.75rem; }

.price-badge {
  background: #d1fae5;
  color: #059669;
  padding: 3px 10px;
  border-radius: 9999px;
  font-size: 0.9rem;
  font-weight: 700;
}

.no-image-placeholder { width: 100%; aspect-ratio: 3/4; background: rgba(128,128,128,0.1); display: flex; align-items: center; justify-content: center; font-size: 4rem; }
.empty-state { text-align: center; padding: 4rem 2rem; color: var(--color-text-muted); }
.empty-state .empty-icon { font-size: 4rem; margin-bottom: 1rem; }

/* Gallery theme: dark overlay colors */
.theme-gallery .artwork-name { color: #f9fafb; }
.theme-gallery .artwork-details { color: #9ca3af; }

/* ── Bold featured grid ── */
.bold-featured-row { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: var(--portfolio-gap); margin-bottom: var(--portfolio-gap); }
.bold-featured-main .gallery-container { margin-bottom: 0; }
.bold-featured-side { display: grid; gap: var(--portfolio-gap); align-content: start; }
.bold-featured-side .gallery-container { margin-bottom: 0; }
.gal-bold { margin-top: var(--portfolio-gap); }
@media (max-width: 900px) {
  .bold-featured-row { grid-template-columns: 1fr; }
}

/* ── HTMX swap fade-in (#145) ── */
#artwork-grid.htmx-settling > * {
  opacity: 0;
}
#artwork-grid > * {
  transition: opacity 200ms ease;
  opacity: 1;
}

/* ── Nav active states (#143) ── */
.nav-link {
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.nav-link.active {
  border-bottom-color: var(--accent);
}

.site-mobile-nav-link {
  display: block;
  padding: 0.5rem 0.75rem;
  color: rgb(209 213 219);
  border-left: 2px solid transparent;
  border-radius: 0.25rem;
  transition: color 200ms, background-color 200ms, border-color 200ms;
}

.site-mobile-nav-link:hover {
  color: #fff;
  background: rgb(55 65 81);
}

.site-mobile-nav-link.active {
  color: #fff;
  border-left-color: var(--accent);
  background: rgb(55 65 81 / 0.5);
}

.site-mobile-theme-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  color: rgb(209 213 219);
  border-radius: 0.25rem;
  transition: color 200ms, background-color 200ms;
}

.site-mobile-theme-toggle:hover {
  color: #fff;
  background: rgb(55 65 81);
}

/* ── Animations (#150) ── */

/* Page load body fade-in */
html[class*="theme-"] body {
  opacity: 0;
  transition: opacity 200ms ease;
}
html[class*="theme-"] body.loaded {
  opacity: 1;
}

/* Portfolio grid staggered card fade-in */
@keyframes cardFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.gal > *,
.gal-bold > *,
.bold-featured-row > * {
  animation: cardFadeIn 300ms ease-out both;
}

/* Stagger by row groups */
.gal > *:nth-child(-n+4) { animation-delay: 0ms; }
.gal > *:nth-child(n+5):nth-child(-n+8) { animation-delay: 50ms; }
.gal > *:nth-child(n+9):nth-child(-n+12) { animation-delay: 100ms; }
.gal > *:nth-child(n+13):nth-child(-n+16) { animation-delay: 150ms; }
.gal > *:nth-child(n+17) { animation-delay: 200ms; }

/* Nav link underline slide-in */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent);
  transition: width 150ms ease;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Artwork detail image reveal */
@keyframes detailImageIn {
  from { transform: scale(1.02); opacity: 0.8; }
  to { transform: scale(1.0); opacity: 1; }
}

/* Button transitions */
button, .btn, a[class*="btn"], .inquire-button, [type="submit"] {
  transition: background-color 150ms ease, opacity 150ms ease;
}

/* ── Reduced motion (#150) ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
  html[class*="theme-"] body {
    opacity: 1 !important;
  }
}

/* ── Light mode sidebar overrides ── */
:root {
  --color-sidebar-border: rgba(0, 0, 0, 0.08);
  --color-sidebar-text-muted: #6b7280;
  --color-sidebar-text-hover: #111827;
  --color-sidebar-active-bg: rgba(102, 126, 234, 0.1);
  --color-sidebar-active-text: #4f46e5;
}

html.dark {
  --color-sidebar-border: rgba(255, 255, 255, 0.08);
  --color-sidebar-text-muted: #64748b;
  --color-sidebar-text-hover: #f1f5f9;
  --color-sidebar-active-bg: rgba(129, 140, 248, 0.15);
  --color-sidebar-active-text: #c7d2fe;
}


/* Divider label — needs opaque bg to cover the line behind it */
.divider-label {
  background-color: #ffffff;
}
html.dark .divider-label {
  background-color: #0c1027;
}

/* Marketing nav — opaque-ish background for both modes */
.marketing-nav {
  background-color: rgba(255, 255, 255, 0.85);
}
html.dark .marketing-nav {
  background-color: rgba(8, 12, 26, 0.85);
}