/* ============================================================
   KERROCK — Kolpa-San Material Catalog
   Aesthetic: Luxury Architectural Showroom
   Palette: Warm off-white + deep charcoal + amber gold accent
   Typography: Cormorant Garamond (display) + DM Sans (UI)
   ============================================================ */

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

/* ── Reset & Tokens ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #F4F1EC;
  --bg-card:   #FAFAF8;
  --surface:   #EEECE7;
  --ink:       #1C1916;
  --ink-mid:   #6B6560;
  --ink-soft:  #ABA79F;
  --accent:    #B8922A;
  --accent-lt: #D4AC4A;
  --line:      #DDD9D2;
  --danger:    #C0392B;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-ui:      'DM Sans', system-ui, sans-serif;

  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   16px;
  --shadow: 0 2px 24px rgba(28,25,22,0.08);
  --shadow-xl: 0 8px 64px rgba(28,25,22,0.18);

  --transition: 0.28s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-weight: 300;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Grain overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.35;
}

/* ── Max-width wrapper ── */
.site-header > *,
.hero > *,
.catalog-section > *,
.site-footer > * {
  /* inner children already lay out correctly; wrapper is on the sections */
}

.site-header,
.hero,
.catalog-section,
.site-footer {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}

/* Full-bleed wrappers that hold the centered sections */
.header-outer {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244,241,236,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.footer-outer {
  border-top: 1px solid var(--line);
}

/* ── Header ── */
.site-header {
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 0;
  text-decoration: none;
}

.logo-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--ink);
  line-height: 1;
  text-transform: uppercase;
}

.logo-sub {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  color: var(--ink-mid);
  text-transform: uppercase;
}

/* ── Language switcher ── */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.lang-btn {
  background: none;
  border: none;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  cursor: pointer;
  padding: 0.2rem 0.3rem;
  border-radius: 2px;
  transition: color var(--transition);
}

.lang-btn:hover { color: var(--ink); }
.lang-btn.active { color: var(--accent); font-weight: 500; }

.lang-divider {
  color: var(--line);
  font-size: 0.75rem;
  user-select: none;
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.header-contact a {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--ink-mid);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.header-contact a:hover { color: var(--accent); }

/* ── Hero ── */
.hero {
  position: relative;
  padding: clamp(4rem, 10vw, 8rem) clamp(1.5rem, 4vw, 3rem) clamp(3rem, 7vw, 5rem);
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  right: -10%;
  top: -20%;
  width: 55vw;
  height: 120%;
  background: radial-gradient(ellipse at 60% 40%, rgba(184,146,42,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero-eyebrow {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 18ch;
  margin-bottom: 1.5rem;
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-desc {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--ink-mid);
  max-width: 52ch;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  color: var(--ink);
  line-height: 1;
}

.stat-label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.hero-rule {
  width: 48px;
  height: 1px;
  background: var(--accent);
  margin: 2rem 0;
}

/* ── Catalog Section ── */
.catalog-section {
  padding: 0 clamp(1.5rem, 4vw, 3rem) 5rem;
}

/* ── Filter Bar ── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 2.5rem;
}

.filter-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-right: 0.5rem;
}

.filter-group {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.35rem 0.85rem;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  background: transparent;
  color: var(--ink-mid);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all var(--transition);
}

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

.filter-btn.active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}

.filter-divider {
  width: 1px;
  height: 20px;
  background: var(--line);
  align-self: center;
}

.filter-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.results-count {
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.results-count span {
  color: var(--ink);
  font-weight: 500;
}

/* ── Product Grid ── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* ── Product Card ── */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  animation: fadeUp 0.5s ease both;
}

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

.product-card.out-of-stock {
  opacity: 0.6;
}

.product-card.hidden {
  display: none;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Staggered animation */
.product-card:nth-child(1)  { animation-delay: 0.05s; }
.product-card:nth-child(2)  { animation-delay: 0.10s; }
.product-card:nth-child(3)  { animation-delay: 0.15s; }
.product-card:nth-child(4)  { animation-delay: 0.20s; }
.product-card:nth-child(5)  { animation-delay: 0.25s; }
.product-card:nth-child(6)  { animation-delay: 0.30s; }
.product-card:nth-child(7)  { animation-delay: 0.35s; }
.product-card:nth-child(8)  { animation-delay: 0.40s; }

/* Color swatch / image area */
.card-visual {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.card-swatch {
  width: 100%;
  height: 100%;
  transition: transform var(--transition);
}

.product-card:hover .card-swatch {
  transform: scale(1.03);
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 0.25rem 0.6rem;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 2px;
}

.badge-featured {
  background: var(--ink);
  color: var(--bg);
}

.badge-oos {
  background: rgba(255,255,255,0.9);
  color: var(--danger);
  border: 1px solid currentColor;
}

.card-id {
  position: absolute;
  bottom: 12px;
  left: 12px;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.7);
  font-family: 'DM Mono', monospace;
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

/* Card body */
.card-body {
  padding: 1.2rem 1.25rem 1.4rem;
}

.card-series {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

.card-name {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.1;
  margin-bottom: 0.9rem;
}

.card-dims {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.dim-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 0.3rem 0.6rem;
  background: var(--surface);
  border-radius: var(--r-sm);
  min-width: 64px;
}

.dim-val {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.2;
}

.dim-key {
  font-size: 0.58rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.card-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}

.card-price {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.price-plate {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1;
}

.price-m2 {
  font-size: 0.72rem;
  color: var(--ink-soft);
}

.card-stock {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.stock-num {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1;
}

.stock-label {
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.stock-num.oos { color: var(--danger); }

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(28,25,22,0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--r-lg);
  max-width: 860px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  transform: scale(0.97) translateY(12px);
  transition: transform var(--transition);
  position: relative;
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 10;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition);
  line-height: 1;
}

.modal-close:hover {
  background: var(--accent);
  transform: rotate(90deg);
}

.modal-visual {
  position: relative;
  min-height: 340px;
  border-radius: var(--r-lg) 0 0 var(--r-lg);
  overflow: hidden;
}

.modal-swatch {
  width: 100%;
  height: 100%;
  min-height: 340px;
}

.modal-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-body {
  padding: 2.5rem 2rem;
  overflow-y: auto;
}

.modal-eyebrow {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 300;
  line-height: 1.05;
  color: var(--ink);
  margin-bottom: 0.25rem;
}

.modal-id {
  font-size: 0.7rem;
  color: var(--ink-soft);
  letter-spacing: 0.15em;
  margin-bottom: 1.25rem;
}

.modal-desc {
  font-size: 0.88rem;
  font-weight: 300;
  color: var(--ink-mid);
  line-height: 1.75;
  margin-bottom: 1.75rem;
}

.modal-section-title {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
}

.modal-dims {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.modal-dim-box {
  background: var(--surface);
  border-radius: var(--r-sm);
  padding: 0.8rem;
  text-align: center;
}

.modal-dim-val {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.1;
}

.modal-dim-unit {
  font-size: 0.7rem;
  color: var(--ink-soft);
}

.modal-dim-key {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.modal-applications {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
}

.app-tag {
  padding: 0.3rem 0.7rem;
  background: var(--surface);
  border-radius: 100px;
  font-size: 0.72rem;
  color: var(--ink-mid);
}

.modal-pricing {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
  padding: 1.25rem;
  background: var(--surface);
  border-radius: var(--r-md);
}

.pricing-item { display: flex; flex-direction: column; gap: 0.2rem; }

.pricing-val {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1;
}

.pricing-key {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.modal-stock-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.stock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.stock-dot.in  { background: #4CAF50; box-shadow: 0 0 6px rgba(76,175,80,0.5); }
.stock-dot.out { background: var(--danger); }

.stock-text {
  font-size: 0.82rem;
  color: var(--ink-mid);
}

.modal-cta {
  width: 100%;
  padding: 0.9rem;
  background: var(--ink);
  color: var(--bg);
  border: none;
  border-radius: var(--r-sm);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--transition);
}

.modal-cta:hover { background: var(--accent); }

.modal-cta.disabled {
  background: var(--line);
  color: var(--ink-soft);
  cursor: not-allowed;
}

/* ── Footer ── */
.site-footer {
  padding: 2.5rem clamp(1.5rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--ink-soft);
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  font-size: 0.75rem;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--accent); }

/* ── No results ── */
.no-results {
  grid-column: 1/-1;
  text-align: center;
  padding: 5rem 1rem;
  color: var(--ink-soft);
}

.no-results h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 300;
  margin-bottom: 0.5rem;
  color: var(--ink-mid);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-soft); }

/* ── Responsive ── */
@media (max-width: 700px) {
  .modal {
    grid-template-columns: 1fr;
  }

  .modal-visual {
    min-height: 220px;
    border-radius: var(--r-lg) var(--r-lg) 0 0;
  }

  .modal-dims {
    grid-template-columns: repeat(3, 1fr);
  }

  .header-contact { display: none; }
  .lang-switcher { order: 3; }

  .hero-stats { gap: 1.5rem; }
}