/* Chiaroscuro SF LLC — design system
   Named for the photographic technique: light against dark.
   Warm gallery plaster, ink, darkroom copper. Not a generic ecommerce palette. */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, video { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { background: none; border: 0; cursor: pointer; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }

:root {
  --color-bg: #F3EEE4;
  --color-surface: #FFFCF6;
  --color-surface-alt: #161310;
  --color-surface-warm: #E8DFD0;
  --color-border: #D6CCBA;
  --color-border-strong: #B8AB94;
  --color-text-primary: #161310;
  --color-text-secondary: #4A4338;
  --color-text-muted: #7A7266;
  --color-text-on-dark: #F3EEE4;
  --color-accent: #B24A22;
  --color-accent-hover: #8C3818;
  --color-accent-fg: #FFFCF6;
  --color-success: #2C6B4A;
  --color-warning: #9A7420;
  --color-error: #8A2B2B;
  --font-heading: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Figtree", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(22,19,16,.06);
  --shadow-md: 0 8px 24px rgba(22,19,16,.08);
  --shadow-lg: 0 18px 48px rgba(22,19,16,.14);
  --space-xs: 4px; --space-sm: 8px; --space-md: 16px; --space-lg: 24px;
  --space-xl: 40px; --space-2xl: 64px; --space-3xl: 96px;
  --transition-fast: 150ms ease; --transition-base: 250ms ease;
  --nav-h: 72px; --announce-h: 36px;
  --max: 1280px;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  min-height: 100vh;
}
h1, h2, h3, h4, .font-display {
  font-family: var(--font-heading);
  color: var(--color-text-primary);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 22px;
  border-radius: var(--radius-sm);
  font-weight: 600; font-size: 14px; letter-spacing: .04em; text-transform: uppercase;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}
.btn:disabled, .btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--color-accent); color: var(--color-accent-fg); }
.btn-primary:hover:not(:disabled) { background: var(--color-accent-hover); }
.btn-secondary { background: var(--color-text-primary); color: var(--color-text-on-dark); }
.btn-secondary:hover:not(:disabled) { background: #2c2620; }
.btn-ghost { background: transparent; border: 1px solid var(--color-border-strong); color: var(--color-text-primary); }
.btn-ghost:hover:not(:disabled) { border-color: var(--color-text-primary); }
.btn-sm { min-height: 36px; padding: 0 14px; font-size: 12px; }
.btn-lg { min-height: 56px; padding: 0 28px; font-size: 15px; width: 100%; }
.btn-block { width: 100%; }

/* Badges */
.badge {
  display: inline-flex; align-items: center; padding: 3px 8px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase;
  border-radius: var(--radius-sm); background: var(--color-surface-warm); color: var(--color-text-primary);
}
.badge-sale { background: var(--color-accent); color: var(--color-accent-fg); }
.badge-in { background: #2e7d32; color: #fff; font-weight: 500; }
.badge-out { background: var(--color-error); color: #fff; }
.badge-new { background: var(--color-text-primary); color: var(--color-text-on-dark); }

/* Layout */
.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.section { padding: 56px 0; }
.section-alt { background: var(--color-surface); }
.section-dark { background: var(--color-surface-alt); color: var(--color-text-on-dark); }
.section-dark h2, .section-dark h3, .section-dark .section-title { color: var(--color-text-on-dark); }
.section-header { margin-bottom: 32px; }
.section-title { font-size: clamp(1.6rem, 3vw, 2.4rem); }
.section-subtitle { color: var(--color-text-muted); margin-top: 8px; max-width: 42rem; }
.grid-2, .grid-3, .grid-4, .grid-auto { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr 1fr; }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

/* Announcement */
.announcement-bar {
  background: var(--color-surface-alt); color: var(--color-text-on-dark);
  font-size: 12px; letter-spacing: .06em; text-transform: uppercase;
  text-align: center; padding: 10px 16px; min-height: var(--announce-h);
}
.announcement-bar a { text-decoration: underline; text-underline-offset: 2px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(243,238,228,.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--nav-h); gap: 16px;
}
.nav-logo {
  font-family: var(--font-heading); font-size: 1.35rem; font-weight: 600;
  color: var(--color-text-primary); letter-spacing: -0.03em; line-height: 1.1;
}
.nav-logo span { display: block; font-family: var(--font-mono); font-size: 9px; letter-spacing: .22em; font-weight: 400; color: var(--color-text-muted); margin-top: 2px; }
.nav-links { display: none; align-items: center; gap: 4px; }
.nav-links a {
  padding: 8px 12px; font-size: 13px; letter-spacing: .04em; text-transform: uppercase;
  color: var(--color-text-secondary); font-weight: 600;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--color-text-primary); }
.nav-actions { display: flex; align-items: center; gap: 4px; }
.icon-btn {
  width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center;
  color: var(--color-text-primary); position: relative;
}
.cart-count {
  position: absolute; top: 6px; right: 4px;
  min-width: 16px; height: 16px; padding: 0 4px;
  background: var(--color-accent); color: #fff; border-radius: var(--radius-full);
  font-size: 10px; font-weight: 700; display: none; align-items: center; justify-content: center;
}
.cart-count.show { display: inline-flex; }
.hamburger { display: inline-flex; flex-direction: column; gap: 5px; }
.hamburger span { display: block; width: 18px; height: 2px; background: currentColor; }
.mobile-menu {
  display: none; position: fixed; inset: 0; z-index: 50; background: var(--color-bg);
  padding: 24px 20px; overflow: auto;
}
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 14px 0; border-bottom: 1px solid var(--color-border); font-size: 1.2rem; font-family: var(--font-heading); color: var(--color-text-primary); }
.mobile-menu-close { float: right; }

/* Search overlay */
.search-panel {
  display: none; position: absolute; left: 0; right: 0; top: 100%;
  background: var(--color-surface); border-bottom: 1px solid var(--color-border);
  padding: 16px 0 24px; box-shadow: var(--shadow-md);
}
.search-panel.open { display: block; }
.search-bar { display: flex; gap: 8px; }
.search-bar input {
  flex: 1; min-height: 48px; padding: 0 16px;
  border: 1px solid var(--color-border-strong); background: var(--color-bg); border-radius: var(--radius-sm);
}
.search-results { margin-top: 12px; }
.search-item {
  display: flex; gap: 12px; align-items: center; padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}
.search-item img { width: 56px; height: 56px; object-fit: cover; background: var(--color-surface-warm); }
.search-item strong { display: block; color: var(--color-text-primary); font-size: 14px; }
.search-item .price { font-family: var(--font-mono); font-size: 13px; }

/* Hero */
.hero {
  position: relative; min-height: 78vh; display: flex; align-items: flex-end;
  color: var(--color-text-on-dark); overflow: hidden;
}
.hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(22,19,16,.15) 0%, rgba(22,19,16,.72) 100%);
}
.hero-content { position: relative; z-index: 1; padding: 48px 0 56px; max-width: 720px; }
.hero-eyebrow { font-family: var(--font-mono); font-size: 11px; letter-spacing: .22em; text-transform: uppercase; margin-bottom: 12px; opacity: .85; }
.hero-title { font-size: clamp(2.2rem, 6vw, 4.2rem); color: #fff; margin-bottom: 16px; }
.hero-subtitle { font-size: 1.05rem; max-width: 36rem; margin-bottom: 28px; color: #E8DFD0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Product / collection cards */
.product-card, .collection-card, .blog-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); overflow: hidden; display: flex; flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.product-card:hover, .collection-card:hover, .blog-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.card-media { position: relative; aspect-ratio: 1 / 1; background: var(--color-surface-warm); overflow: hidden; }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.card-badges { position: absolute; top: 10px; left: 10px; display: flex; gap: 6px; flex-wrap: wrap; }
.card-body { padding: 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.card-title { font-size: 1rem; font-family: var(--font-heading); color: var(--color-text-primary); }
.card-price { font-family: var(--font-mono); font-size: 14px; color: var(--color-text-primary); }
.card-compare { color: var(--color-text-muted); text-decoration: line-through; margin-left: 8px; }
.card-vendor { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--color-text-muted); }
.collection-card .card-media { aspect-ratio: 4 / 3; }
.collection-card .card-body { padding: 20px; }
.blog-card .card-media { aspect-ratio: 16 / 10; }

/* Trust */
.trust-badges { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.trust-item { padding: 20px; border: 1px solid var(--color-border); background: var(--color-surface); }
.trust-item h3 { font-size: 1.05rem; margin-bottom: 6px; }
.trust-item p { font-size: 14px; color: var(--color-text-muted); }

/* Footer */
.footer { background: var(--color-surface-alt); color: #C9C0B0; padding: 56px 0 24px; }
.footer-grid { display: grid; gap: 32px; grid-template-columns: 1fr; }
.footer-logo { font-family: var(--font-heading); font-size: 1.5rem; color: #fff; margin-bottom: 10px; }
.footer-col h4 { color: #fff; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 14px; font-family: var(--font-body); font-weight: 700; }
.footer-col a, .footer-col p { display: block; padding: 4px 0; font-size: 14px; }
.footer-col a:hover { color: #fff; }
.social-links { display: flex; gap: 12px; margin-top: 12px; }
.footer-bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid #2c2620; font-size: 12px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; }

/* Breadcrumb */
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--color-text-muted); padding: 20px 0 8px; }
.breadcrumb a:hover { color: var(--color-text-primary); }
.breadcrumb-item::after { content: "/"; margin-left: 8px; opacity: .5; }
.breadcrumb-item:last-child::after { content: none; }

/* Product page */
.product-layout { display: grid; gap: 32px; padding-bottom: 48px; }
.product-gallery { position: sticky; top: calc(var(--nav-h) + 12px); }
.gallery-main-wrap { background: var(--color-surface-warm); aspect-ratio: 1; overflow: hidden; cursor: zoom-in; }
.gallery-main-wrap img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumbs { display: flex; gap: 8px; margin-top: 10px; overflow-x: auto; }
.gallery-thumb { width: 72px; height: 72px; flex-shrink: 0; border: 2px solid transparent; background: var(--color-surface-warm); }
.gallery-thumb.active, .gallery-thumb:hover { border-color: var(--color-text-primary); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }
.product-vendor { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--color-text-muted); }
.product-title { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 8px 0 12px; }
.product-price-wrap { display: flex; align-items: baseline; gap: 12px; margin-bottom: 8px; }
.product-price { font-family: var(--font-mono); font-size: 1.4rem; color: var(--color-text-primary); }
.product-compare-price { font-family: var(--font-mono); color: var(--color-text-muted); text-decoration: line-through; }
.sku-line { font-family: var(--font-mono); font-size: 12px; color: var(--color-text-muted); margin-bottom: 16px; }
.option-group { margin: 16px 0; }
.option-label { display: block; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; font-weight: 700; margin-bottom: 8px; color: var(--color-text-primary); }
.option-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.option-btn {
  min-height: 40px; padding: 0 14px; border: 1px solid var(--color-border-strong);
  background: var(--color-surface); font-size: 13px;
}
.option-btn.active { border-color: var(--color-text-primary); background: var(--color-text-primary); color: var(--color-text-on-dark); }
.option-btn.unavailable { opacity: .4; text-decoration: line-through; }
.qty-control { display: inline-flex; border: 1px solid var(--color-border-strong); }
.qty-btn { width: 44px; height: 44px; }
.qty-input { width: 52px; text-align: center; border: 0; background: transparent; }
.availability-msg { margin: 12px 0; font-size: 14px; }
.availability-msg.in { color: var(--color-success); }
.availability-msg.out { color: var(--color-error); }
.product-short-desc { margin: 20px 0; }
.product-accordions { margin-top: 28px; border-top: 1px solid var(--color-border); }
.accordion { border-bottom: 1px solid var(--color-border); }
.accordion summary { cursor: pointer; padding: 16px 0; font-weight: 700; color: var(--color-text-primary); list-style: none; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion-body { padding: 0 0 16px; font-size: 15px; }
.accordion-body ul { list-style: disc; padding-left: 1.2rem; }
.accordion-body p + p { margin-top: 10px; }
.trust-inline { display: grid; gap: 8px; margin-top: 20px; font-size: 13px; color: var(--color-text-muted); }
.sticky-atc {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  background: var(--color-surface); border-top: 1px solid var(--color-border);
  padding: 10px 16px; display: none; align-items: center; gap: 12px;
  box-shadow: var(--shadow-lg);
}
.sticky-atc.visible { display: flex; }
.sticky-atc-product { flex: 1; min-width: 0; }
.sticky-atc-product strong { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 14px; color: var(--color-text-primary); }

/* Cart drawer */
.cart-overlay { position: fixed; inset: 0; background: rgba(22,19,16,.45); z-index: 60; opacity: 0; pointer-events: none; transition: opacity var(--transition-base); }
.cart-overlay.open { opacity: 1; pointer-events: auto; }
.cart-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(420px, 100%);
  background: var(--color-surface); z-index: 61; transform: translateX(100%);
  transition: transform var(--transition-base); display: flex; flex-direction: column;
}
.cart-drawer.open { transform: translateX(0); }
.cart-drawer-header { display: flex; justify-content: space-between; align-items: center; padding: 20px; border-bottom: 1px solid var(--color-border); }
.cart-lines { flex: 1; overflow: auto; padding: 16px 20px; }
.cart-item { display: grid; grid-template-columns: 72px 1fr auto; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--color-border); }
.cart-item img { width: 72px; height: 72px; object-fit: cover; background: var(--color-surface-warm); }
.cart-footer { padding: 20px; border-top: 1px solid var(--color-border); }
.cart-subtotal { display: flex; justify-content: space-between; font-size: 1.05rem; margin-bottom: 6px; color: var(--color-text-primary); }
.cart-tax-note { font-size: 12px; color: var(--color-text-muted); margin-bottom: 16px; }
.empty-cart { text-align: center; padding: 48px 16px; color: var(--color-text-muted); }

/* Toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translate(-50%, 16px);
  background: var(--color-text-primary); color: #fff; padding: 12px 18px;
  border-radius: var(--radius-sm); opacity: 0; transition: all var(--transition-base); z-index: 80;
  font-size: 14px; max-width: 90%;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast-error { background: var(--color-error); }
.toast-success { background: var(--color-success); }

/* Forms */
.form-grid { display: grid; gap: 16px; }
.form-field label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 6px; color: var(--color-text-primary); }
.form-field input, .form-field textarea, .form-field select {
  width: 100%; min-height: 48px; padding: 10px 12px;
  border: 1px solid var(--color-border-strong); background: var(--color-surface); border-radius: var(--radius-sm);
}
.form-field textarea { min-height: 140px; resize: vertical; }
.form-error { color: var(--color-error); font-size: 13px; margin-top: 4px; }
.form-success { background: #e7f3ec; color: var(--color-success); padding: 12px 16px; margin-bottom: 16px; }

/* Collection toolbar */
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; margin: 16px 0 24px; }
.toolbar select { min-height: 44px; padding: 0 12px; border: 1px solid var(--color-border-strong); background: var(--color-surface); }
.filter-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-chip { min-height: 36px; padding: 0 12px; border: 1px solid var(--color-border); background: var(--color-surface); font-size: 13px; }
.filter-chip.active { border-color: var(--color-text-primary); background: var(--color-text-primary); color: #fff; }

/* Pagination */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 32px; }
.pagination-btn { min-width: 44px; height: 44px; border: 1px solid var(--color-border); background: var(--color-surface); }
.pagination-btn[aria-current="page"] { background: var(--color-text-primary); color: #fff; }

/* Policy / prose */
.prose { max-width: 46rem; }
.prose h2 { margin: 28px 0 10px; font-size: 1.4rem; }
.prose h3 { margin: 20px 0 8px; font-size: 1.1rem; }
.prose p, .prose li { margin-bottom: 10px; }
.prose ul, .prose ol { padding-left: 1.2rem; list-style: disc; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }
.policy-layout { display: grid; gap: 32px; }
.policy-nav a { display: block; padding: 8px 0; border-bottom: 1px solid var(--color-border); font-size: 14px; }
.owner-note {
  border: 1px dashed var(--color-warning); background: #fbf3dd; color: #5c470c;
  padding: 10px 12px; font-size: 13px; margin: 12px 0;
}

/* FAQ */
.faq-list { max-width: 48rem; }
.faq-list .accordion { background: var(--color-surface); padding: 0 16px; margin-bottom: 8px; border: 1px solid var(--color-border); }

/* 404 */
.page-404 { text-align: center; padding: 80px 20px; }
.page-404 h1 { font-size: 5rem; }

/* Newsletter */
.newsletter { display: flex; flex-wrap: wrap; gap: 8px; }
.newsletter input { flex: 1; min-width: 200px; min-height: 48px; padding: 0 14px; border: 1px solid var(--color-border-strong); background: var(--color-surface); }

/* Zoom lightbox */
.lightbox { display: none; position: fixed; inset: 0; background: rgba(22,19,16,.92); z-index: 90; align-items: center; justify-content: center; padding: 24px; }
.lightbox.open { display: flex; }
.lightbox img { max-height: 90vh; max-width: 90vw; }

/* Skeleton */
.skeleton { background: linear-gradient(90deg, #e8dfd0 25%, #f3eee4 50%, #e8dfd0 75%); background-size: 200% 100%; animation: shimmer 1.2s infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes spin { to { transform: rotate(360deg); } }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .trust-badges { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .product-layout { grid-template-columns: 1.1fr .9fr; align-items: start; }
  .policy-layout { grid-template-columns: 220px 1fr; }
  .hamburger { display: none; }
  .nav-links { display: flex; }
}
@media (min-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .container { padding: 0 32px; }
  .section { padding: 80px 0; }
  .trust-badges { grid-template-columns: repeat(4, 1fr); }
}
@media (min-width: 1280px) {
  .hero { min-height: 86vh; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}