:root {
  --ink: #111;
  --paper: #fff;
  --link: #0047cc;
  --warning: #ff3b00;
  --marker: #ffef00;
  --line: #222;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  background: #f5f5ee;
  color: var(--ink);
  font-family: Verdana, Geneva, Arial, sans-serif;
  font-size: 15px;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px),
    #f8f8f0;
  background-size: 18px 18px;
}

a {
  color: var(--link);
  text-decoration: underline;
}

button,
summary {
  font: inherit;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -42px;
  z-index: 10;
  border: 2px solid var(--ink);
  background: var(--marker);
  color: var(--ink);
  padding: 6px 8px;
}

.skip-link:focus {
  top: 8px;
}

.site-header,
.page-shell,
.site-footer {
  width: min(1120px, calc(100% - 24px));
  margin: 0 auto;
}

.site-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: end;
  padding: 22px 0 12px;
  border-bottom: 4px double var(--line);
}

.eyebrow {
  margin: 0 0 4px;
  font-size: 0.72rem;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-family: Arial Black, Impact, Arial, sans-serif;
  font-size: clamp(2rem, 7vw, 4.8rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.tagline {
  margin: 8px 0 0;
  max-width: 54ch;
}

.stock-counter {
  min-width: 118px;
  border: 2px solid var(--ink);
  background: var(--marker);
  padding: 8px;
  text-align: center;
  box-shadow: 5px 5px 0 var(--ink);
}

.stock-counter span {
  display: block;
  font-family: Arial Black, Impact, Arial, sans-serif;
  font-size: 3rem;
  line-height: 0.9;
}

.stock-counter small {
  display: block;
  margin-top: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.page-shell {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 0 24px;
}

.sidebar {
  border-right: 1px solid var(--line);
  padding-right: 12px;
}

.sidebar nav {
  display: grid;
  gap: 7px;
}

.sidebar-note {
  margin: 18px 0 0;
  font-size: 0.72rem;
  line-height: 1.45;
}

.notice {
  border: 1px solid var(--line);
  background: var(--warning);
  color: #fff;
  margin-bottom: 12px;
  padding: 9px 10px;
}

.notice h2 {
  margin: 0;
  font-size: 1rem;
  text-transform: uppercase;
}

.notice p {
  margin: 5px 0 0;
  font-size: 0.82rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.filter-button {
  min-height: 30px;
  border: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  padding: 4px 8px;
}

.filter-button.active,
.filter-button:hover,
.filter-button:focus-visible {
  background: var(--marker);
}

.product-list {
  display: grid;
  gap: 10px;
}

.product-card {
  display: grid;
  grid-template-columns: 136px minmax(0, 1fr) 128px;
  gap: 10px;
  align-items: start;
  border: 1px solid var(--line);
  background: var(--paper);
  cursor: pointer;
  padding: 8px;
}

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

.product-media {
  position: relative;
  width: 136px;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 44%, var(--placeholder-color, #ff7400) 0 28%, transparent 29%),
    linear-gradient(135deg, rgba(0, 0, 0, 0.07), transparent 42%),
    #fff;
  overflow: hidden;
}

.product-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff;
}

.product-link {
  color: inherit;
  text-decoration: none;
}

.product-link:hover,
.product-link:focus-visible {
  outline: 3px solid var(--marker);
  outline-offset: 2px;
}

.product-copy h3 a {
  color: var(--ink);
}

.product-copy h3 a:hover,
.product-copy h3 a:focus-visible {
  color: var(--link);
}

.product-copy h3 {
  margin: 0;
  font-size: 1rem;
}

.product-copy p {
  margin: 5px 0 0;
  font-size: 0.84rem;
  line-height: 1.45;
}

.product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.product-meta span {
  border: 1px solid var(--line);
  background: #f9f9f9;
  padding: 2px 5px;
}

details {
  margin-top: 8px;
  border-top: 1px dotted var(--line);
  padding-top: 6px;
  font-size: 0.78rem;
}

summary {
  color: var(--link);
  cursor: pointer;
  text-decoration: underline;
}

.product-actions {
  min-width: 0;
  text-align: right;
}

.product-actions b {
  display: block;
  margin-bottom: 7px;
}

.product-actions span {
  display: inline-block;
  border: 2px solid var(--ink);
  background: #111;
  color: #fff;
  cursor: not-allowed;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 8px;
  text-transform: uppercase;
}

.back-link {
  margin: 0 0 10px;
  font-size: 0.82rem;
}

.item-detail {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 10px;
}

.item-layout {
  display: grid;
  grid-template-columns: minmax(220px, 46%) minmax(0, 1fr);
  gap: 14px;
}

.item-photo {
  margin: 0;
}

.item-photo img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line);
  background: #fff;
  object-fit: contain;
}

.item-photo figcaption {
  border: 1px solid var(--line);
  border-top: 0;
  background: #f9f9f9;
  padding: 4px 6px;
  font-size: 0.72rem;
  overflow-wrap: anywhere;
}

.item-info h2 {
  margin: 0;
  font-family: Arial Black, Impact, Arial, sans-serif;
  font-size: clamp(1.6rem, 5vw, 3rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.item-description,
.item-detail-copy {
  font-size: 0.94rem;
  line-height: 1.5;
}

.item-specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin: 14px 0;
}

.item-specs div {
  border: 1px solid var(--line);
  background: #f9f9f9;
  padding: 6px;
}

.item-specs dt {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
}

.item-specs dd {
  margin: 3px 0 0;
  font-weight: 700;
}

.item-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.dead-button {
  display: inline-block;
  border: 2px solid var(--ink);
  background: #111;
  color: #fff;
  cursor: not-allowed;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 8px;
  text-transform: uppercase;
}

.dead-note {
  font-size: 0.78rem;
}

.interactive-section {
  border-top: 4px double var(--line);
  margin-top: 22px;
  padding-top: 14px;
}

.section-heading {
  margin-bottom: 12px;
}

.section-heading h2 {
  margin: 0;
  font-family: Arial Black, Impact, Arial, sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.section-heading p:not(.eyebrow) {
  margin: 5px 0 0;
  max-width: 64ch;
  font-size: 0.84rem;
  line-height: 1.45;
}

.guestbook-entries {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}

.guestbook-entry {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 8px;
}

.guestbook-entry.local-entry {
  box-shadow: inset 5px 0 0 var(--marker);
}

.entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 5px;
  font-size: 0.74rem;
}

.entry-meta span {
  border: 1px solid var(--line);
  background: #f9f9f9;
  padding: 2px 5px;
}

.guestbook-entry p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.45;
}

.store-form {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 10px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.form-row {
  display: grid;
  gap: 4px;
  margin-bottom: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: lowercase;
}

.form-row input,
.form-row textarea {
  width: 100%;
  border: 2px inset #ddd;
  background: #fff;
  color: var(--ink);
  font: 0.9rem Verdana, Geneva, Arial, sans-serif;
  padding: 6px;
}

.form-row textarea {
  resize: vertical;
}

.form-error {
  min-height: 1.2em;
  margin: 0 0 8px;
  color: #b00000;
  font-size: 0.8rem;
  font-weight: 700;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.form-actions button {
  min-height: 30px;
  border: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  padding: 4px 8px;
  font-weight: 700;
  text-transform: lowercase;
}

.form-actions button:hover,
.form-actions button:focus-visible {
  background: var(--marker);
}

.receipt {
  border: 2px solid var(--ink);
  background: var(--marker);
  margin-top: 10px;
  padding: 10px;
  box-shadow: 5px 5px 0 var(--ink);
}

.receipt h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  text-transform: uppercase;
}

.receipt p {
  margin: 0 0 5px;
  font-size: 0.84rem;
  line-height: 1.45;
}

.no-script-note {
  border: 1px solid var(--line);
  background: #fff;
  margin: 10px 0 0;
  padding: 8px;
  font-size: 0.8rem;
}

.site-footer {
  border-top: 4px double var(--line);
  padding: 12px 0 24px;
  font-size: 0.78rem;
}

.site-footer p {
  margin: 0 0 6px;
}

@media (max-width: 760px) {
  .site-header {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .stock-counter {
    width: min(220px, 100%);
  }

  .page-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 0 0 10px;
  }

  .sidebar nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .product-card {
    grid-template-columns: 96px minmax(0, 1fr);
  }

  .product-media {
    width: 96px;
  }

  .product-actions {
    grid-column: 1 / -1;
    text-align: left;
    border-top: 1px dotted var(--line);
    padding-top: 7px;
  }

  .item-layout {
    grid-template-columns: 1fr;
  }

  .item-specs {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

@media (max-width: 430px) {
  .site-header,
  .page-shell,
  .site-footer {
    width: min(100% - 16px, 1120px);
  }

  .product-card {
    grid-template-columns: 1fr;
  }

  .product-media {
    width: 100%;
    max-width: 220px;
  }
}