/* Kvalitní deky — minimalist black & white catalog.
   Mobile-first: base rules are the phone layout, media queries add width. */

:root {
  --bg: #ffffff;
  --bg-alt: #f6f5f3;
  --fg: #0a0a0a;
  --fg-soft: #55524e;
  --muted: #86817b;
  --line: #e4e1dd;
  --line-strong: #0a0a0a;

  --wrap: 1240px;
  --gap: 1rem;

  --step--1: clamp(0.78rem, 0.76rem + 0.1vw, 0.83rem);
  --step-0: clamp(0.95rem, 0.92rem + 0.15vw, 1.02rem);
  --step-1: clamp(1.1rem, 1.03rem + 0.35vw, 1.3rem);
  --step-2: clamp(1.45rem, 1.28rem + 0.85vw, 2rem);
  --step-3: clamp(2rem, 1.55rem + 2.2vw, 3.4rem);

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  /* Keep the sticky header from covering anchor targets. */
  scroll-padding-top: 4.5rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

h1, h2, h3 {
  margin: 0;
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.022em;
  text-wrap: balance;
}

h1 { font-size: var(--step-3); }
h2 { font-size: var(--step-2); }
h3 { font-size: var(--step-1); }

p { margin: 0; }

button, select { font: inherit; color: inherit; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: -9999px;
  z-index: 100;
  background: var(--fg);
  color: #fff;
  padding: 0.75rem 1rem;
}
.skip:focus { left: 1rem; top: 1rem; }

.eyebrow {
  font-size: var(--step--1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.75rem;
}

.logo {
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.nav-toggle {
  --bar: 1px;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  margin-right: -0.5rem;
  background: none;
  border: 0;
  cursor: pointer;
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  position: absolute;
  left: 50%;
  width: 1.25rem;
  height: var(--bar);
  background: var(--fg);
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle-bar {
  top: 50%;
  transform: translate(-50%, -50%);
}
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  left: 0;
  transform-origin: center;
}
.nav-toggle-bar::before { top: -0.4rem; }
.nav-toggle-bar::after { top: 0.4rem; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(0.4rem) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { transform: translateY(-0.4rem) rotate(-45deg); }

.site-nav {
  display: none;
  position: absolute;
  inset: 100% 0 auto;
  flex-direction: column;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 0.5rem 1.25rem 1.25rem;
}

.site-nav.is-open { display: flex; }

.site-nav a {
  padding: 0.7rem 0;
  text-decoration: none;
  color: var(--fg-soft);
  border-bottom: 1px solid var(--line);
}
.site-nav a:last-child { border-bottom: 0; }
.site-nav a[aria-current] { color: var(--fg); font-weight: 600; }

@media (min-width: 900px) {
  .nav-toggle { display: none; }

  .site-nav {
    display: flex;
    position: static;
    flex-direction: row;
    gap: 1.75rem;
    padding: 0;
    border: 0;
  }
  .site-nav a {
    padding: 0;
    border: 0;
    font-size: var(--step--1);
    letter-spacing: 0.02em;
    position: relative;
  }
  .site-nav a::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -0.35rem;
    height: 1px;
    background: var(--fg);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--ease);
  }
  .site-nav a:hover::after,
  .site-nav a[aria-current]::after { transform: scaleX(1); }
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 2rem;
  border: 1px solid var(--fg);
  text-decoration: none;
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.btn-primary {
  background: var(--fg);
  color: #fff;
}
.btn-primary:hover {
  background: transparent;
  color: var(--fg);
}

/* ---------- hero ---------- */

.hero {
  padding-block: clamp(3rem, 9vw, 7rem);
  border-bottom: 1px solid var(--line);
}

.hero h1 { margin-block: 0.75rem 1.25rem; max-width: 16ch; }

.hero-text {
  max-width: 46ch;
  color: var(--fg-soft);
  font-size: var(--step-1);
  margin-bottom: 2rem;
}

/* ---------- sections ---------- */

.section { padding-block: clamp(2.75rem, 7vw, 5rem); }
.section-alt { background: var(--bg-alt); }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.25rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--line);
}

.section-link {
  font-size: var(--step--1);
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 1px solid currentColor;
}
.section-link:hover { color: var(--fg); }

/* ---------- category cards ---------- */

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
}

/* All four categories side by side once there is room for them. */
@media (min-width: 700px) {
  .category-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }
}

.category-card {
  position: relative;
  display: block;
  text-decoration: none;
  overflow: hidden;
  background: var(--bg-alt);
}

.category-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.category-card:hover img { transform: scale(1.04); }

.category-card-body {
  position: absolute;
  inset: auto 0 0;
  padding: 1rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.72), transparent);
  color: #fff;
}

.category-card-body h3 { font-size: var(--step-1); }
.category-card-body span {
  font-size: var(--step--1);
  opacity: 0.82;
}

/* ---------- product grid ---------- */

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap) 0.75rem;
}

@media (min-width: 700px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem 1.25rem;
  }
}

@media (min-width: 1100px) {
  .product-grid { grid-template-columns: repeat(4, 1fr); }
}

.card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.card-media {
  position: relative;
  overflow: hidden;
  background: var(--bg-alt);
  margin-bottom: 0.75rem;
}

/* Shoptet's `detail` render pads the photo into a 4:3 box; a square crop
   trims that padding back off, so most products lose nothing. */
.card-media img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.card:hover .card-media img { transform: scale(1.04); }

.badge {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  padding: 0.3rem 0.6rem;
  background: var(--fg);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.badge-soft { background: #fff; color: var(--fg); }

.card-name {
  font-size: var(--step-0);
  font-weight: 500;
  line-height: 1.35;
  margin-bottom: 0.15rem;
}

.card-meta {
  font-size: var(--step--1);
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.card-price { font-weight: 600; }

.section-cta {
  margin-top: clamp(2rem, 4vw, 3rem);
  text-align: center;
}

/* Full width on phones -- a centred pill looks stranded on a narrow screen. */
.section-cta .btn { width: 100%; }

@media (min-width: 600px) {
  .section-cta .btn { width: auto; }
}

/* ---------- catalog (filters + results) ---------- */

.page-head {
  padding-block: clamp(1.5rem, 4vw, 3rem) 1.5rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.5rem;
}

.page-intro {
  margin-top: 0.75rem;
  max-width: 60ch;
  color: var(--fg-soft);
}

.breadcrumb {
  padding-top: 1.25rem;
  font-size: var(--step--1);
  color: var(--muted);
}
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin-inline: 0.4rem; }

.catalog { padding-bottom: 4rem; }

.results-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 1rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.results-count {
  font-size: var(--step--1);
  color: var(--muted);
  margin-right: auto;
}

.sort select,
.filter-open {
  padding: 0.5rem 0.75rem;
  background: none;
  border: 1px solid var(--line);
  font-size: var(--step--1);
  cursor: pointer;
}

/* Filters live in an off-canvas drawer on phones. */
.filters {
  position: fixed;
  inset: 0 0 0 auto;
  z-index: 60;
  width: min(88vw, 22rem);
  padding: 1.25rem;
  background: var(--bg);
  border-left: 1px solid var(--line);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.3s var(--ease);
  visibility: hidden;
}

.filters.is-open {
  transform: translateX(0);
  visibility: visible;
}

.filters-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}
.filters-head h2 { font-size: var(--step-1); }

.filter-reset {
  background: none;
  border: 0;
  padding: 0;
  font-size: var(--step--1);
  color: var(--muted);
  text-decoration: underline;
  cursor: pointer;
}
.filter-reset:hover { color: var(--fg); }

.filter-group { border-bottom: 1px solid var(--line); }
.filter-group:last-child { border-bottom: 0; }

.filter-group summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  list-style: none;
}
.filter-group summary::-webkit-details-marker { display: none; }

.filter-group summary::after {
  content: "+";
  font-weight: 400;
  font-size: 1.1rem;
  color: var(--muted);
}
.filter-group[open] summary::after { content: "–"; }

.filter-options {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding-bottom: 0.9rem;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0;
  cursor: pointer;
}

.filter-option input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--fg);
  flex: none;
}

.filter-option span { font-size: var(--step--1); }
.filter-option .filter-count { margin-left: auto; color: var(--muted); }

.backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(10, 10, 10, 0.35);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease), visibility 0.3s var(--ease);
}
.backdrop.is-open { opacity: 1; visibility: visible; }

.empty {
  padding: 4rem 0;
  text-align: center;
  color: var(--muted);
}

/* Prose under a listing, running the full width of the page. */
.listing-text {
  padding-block: clamp(2rem, 5vw, 3.5rem) 1rem;
  border-top: 1px solid var(--line);
}

.listing-text .prose p:last-child { margin-bottom: 0; }

@media (min-width: 900px) {
  .catalog {
    display: grid;
    grid-template-columns: 15rem 1fr;
    gap: 3rem;
    align-items: start;
  }

  .filters {
    position: sticky;
    top: 5rem;
    inset: auto;
    width: auto;
    max-height: calc(100vh - 7rem);
    padding: 0;
    border: 0;
    transform: none;
    visibility: visible;
  }

  .filter-open { display: none; }
  .backdrop { display: none; }
}

/* ---------- product detail ---------- */

.product {
  display: grid;
  gap: 2rem;
  padding-block: 1.5rem 3rem;
}

@media (min-width: 900px) {
  .product {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding-block: 2.5rem 5rem;
  }
  .product-media { position: sticky; top: 5rem; }
}

.gallery-main {
  margin: 0;
  background: var(--bg-alt);
  overflow: hidden;
}

.gallery-main img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(4.5rem, 1fr));
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.thumb {
  padding: 0;
  background: var(--bg-alt);
  border: 1px solid transparent;
  cursor: pointer;
  overflow: hidden;
}
.thumb img { aspect-ratio: 1 / 1; object-fit: cover; width: 100%; }
.thumb[aria-current="true"] { border-color: var(--line-strong); }

.product-info h1 { margin-block: 0.5rem 1.25rem; }

.price-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.price {
  font-size: var(--step-2);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.stock {
  font-size: var(--step--1);
  color: var(--fg-soft);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.stock::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: #1f7a3d;
}
.stock-soon::before { background: #b8860b; }

.prose { color: var(--fg-soft); }
.prose p { margin-bottom: 0.9rem; }
.prose ul { margin: 0 0 1rem; padding-left: 1.1rem; }
.prose li { margin-bottom: 0.35rem; }
.prose strong { color: var(--fg); font-weight: 600; }

.btn-buy {
  width: 100%;
  margin-top: 1rem;
}

.spec {
  margin-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.spec h2 {
  font-size: var(--step--1);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.spec-table { width: 100%; border-collapse: collapse; }

.spec-table th,
.spec-table td {
  padding: 0.7rem 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  font-size: var(--step--1);
  font-weight: 400;
}

.spec-table th { color: var(--muted); width: 42%; }

.care-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--fg-soft);
  font-size: var(--step--1);
}
.care-list li { margin-bottom: 0.35rem; }

.related { padding-block: 3rem 4rem; border-top: 1px solid var(--line); }
.related h2 { margin-bottom: 1.75rem; font-size: var(--step-2); }

/* ---------- facts strip ---------- */

.facts {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 700px) {
  .facts { grid-template-columns: repeat(4, 1fr); }
}

.fact { border-top: 1px solid var(--line-strong); padding-top: 0.9rem; }
.fact strong { display: block; font-size: var(--step-2); letter-spacing: -0.02em; }
.fact span { font-size: var(--step--1); color: var(--muted); }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding-top: 2.5rem;
  margin-top: auto;
}

.footer-inner {
  display: grid;
  gap: 2rem;
  padding-bottom: 2.5rem;
}

@media (min-width: 700px) {
  .footer-inner { grid-template-columns: 1fr auto; }
}

.footer-name { font-weight: 600; }

.footer-nav { display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem; }
.footer-nav a { font-size: var(--step--1); color: var(--fg-soft); text-decoration: none; }
.footer-nav a:hover { text-decoration: underline; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  padding-block: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: var(--step--1);
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}