:root {
  --bg: #07080d;
  --panel: #10131c;
  --panel-strong: #161a26;
  --text: #f7f8ff;
  --muted: #aeb6c8;
  --line: rgba(255, 255, 255, 0.13);
  --cyan: #35f5ff;
  --pink: #ff3df2;
  --green: #9cff57;
  --amber: #ffd166;
  --danger: #ff6b6b;
  --shadow: 0 20px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(120deg, rgba(53, 245, 255, 0.11), transparent 28rem),
    radial-gradient(circle at 86% 12%, rgba(255, 61, 242, 0.15), transparent 24rem),
    var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 82%);
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 1rem;
  align-items: center;
  padding: 0.8rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 8, 13, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  gap: 0.75rem;
  align-items: center;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 72px;
  height: 72px;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(53, 245, 255, 0.28);
  border-radius: 8px;
  background: #020305;
  box-shadow:
    0 0 26px rgba(53, 245, 255, 0.24),
    0 0 14px rgba(255, 61, 242, 0.12);
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1rem;
}

.brand small {
  margin-top: 0.1rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.top-nav {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.top-nav a {
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
}

.top-nav a:hover,
.top-nav a:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.basket-button,
.primary-button,
.ghost-button,
.primary-link,
.secondary-link,
.card-actions button,
.card-actions a,
.icon-button {
  min-height: 42px;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--text);
}

.basket-button,
.primary-button,
.primary-link {
  background: linear-gradient(135deg, rgba(53, 245, 255, 0.18), rgba(156, 255, 87, 0.14));
  border-color: rgba(53, 245, 255, 0.5);
  box-shadow: 0 0 22px rgba(53, 245, 255, 0.18);
}

.basket-button {
  padding: 0.65rem 0.85rem;
}

.basket-button span {
  display: inline-grid;
  min-width: 1.6rem;
  min-height: 1.6rem;
  margin-left: 0.35rem;
  place-items: center;
  border-radius: 999px;
  background: var(--pink);
  color: #170016;
  font-weight: 800;
}

.catalogue-shell {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 1.2rem;
  width: min(1380px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 3rem) 0 2rem;
}

.intro-panel {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: end;
  min-height: 235px;
  padding: clamp(1.25rem, 5vw, 3.5rem);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background:
    linear-gradient(110deg, rgba(7, 8, 13, 0.97), rgba(7, 8, 13, 0.74) 54%, rgba(7, 8, 13, 0.38)),
    url("assets/hero-neon-circuit-board.svg");
  background-position: center;
  background-size: cover;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 0.55rem;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 0.8rem;
  font-size: clamp(2.2rem, 6vw, 5.2rem);
  line-height: 0.96;
  letter-spacing: 0;
  text-shadow: 0 0 26px rgba(53, 245, 255, 0.22);
}

.intro-panel h1 {
  grid-column: 1 / -1;
  max-width: none;
  margin-bottom: 1.35rem;
  font-size: 4rem;
  line-height: 1.02;
}

h2 {
  margin-bottom: 0.35rem;
  font-size: clamp(1.45rem, 2.4vw, 2.15rem);
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.6rem;
  font-size: 1.18rem;
  line-height: 1.22;
  letter-spacing: 0;
}

.intro-copy {
  display: inline-block;
  max-width: 760px;
  margin-bottom: 1.35rem;
  padding: 0.82rem 1rem;
  border: 1px solid rgba(53, 245, 255, 0.32);
  border-left: 4px solid var(--pink);
  border-radius: 8px;
  background: linear-gradient(90deg, rgba(2, 3, 5, 0.9), rgba(2, 3, 5, 0.58));
  box-shadow:
    0 0 28px rgba(53, 245, 255, 0.16),
    inset 0 0 24px rgba(255, 61, 242, 0.08);
  color: #ffffff;
  font-size: clamp(1.08rem, 1.4vw, 1.32rem);
  font-weight: 700;
  line-height: 1.45;
  text-shadow: 0 0 18px rgba(53, 245, 255, 0.34);
}

.intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1rem;
  text-decoration: none;
}

.secondary-link,
.ghost-button,
.icon-button {
  background: rgba(255, 255, 255, 0.06);
}

.filters,
.product-area,
.contact-form {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 19, 28, 0.78);
  box-shadow: var(--shadow);
}

.filters {
  position: sticky;
  top: 86px;
  align-self: start;
  display: grid;
  gap: 0.7rem;
  padding: 1rem;
}

.filters label,
.contact-form label {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.filters input,
.filters select,
.contact-form input,
.contact-form textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: #090b12;
  color: var(--text);
  outline: none;
  padding: 0.72rem;
}

.filters input:focus,
.filters select:focus,
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 245, 255, 0.13);
}

.product-area {
  min-width: 0;
  padding: clamp(1rem, 2vw, 1.4rem);
}

.section-heading {
  display: flex;
  gap: 1rem;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.result-count {
  margin-bottom: 0.45rem;
  color: var(--muted);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.product-card {
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
  min-height: 100%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  background: rgba(9, 11, 18, 0.86);
}

.listing-title-link {
  color: var(--text);
  text-decoration: none;
}

.listing-title-link:hover,
.listing-title-link:focus-visible {
  color: var(--cyan);
}

.product-image-link {
  display: block;
  background: #0a0d15;
  line-height: 0;
}

.product-image {
  display: block;
  aspect-ratio: 4 / 3;
  width: 100%;
  object-fit: contain;
  background: #0a0d15;
}

.product-body {
  padding: 1rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0.25rem 0.55rem;
  border: 1px solid rgba(53, 245, 255, 0.34);
  border-radius: 999px;
  color: var(--cyan);
  font-size: 0.76rem;
  font-weight: 700;
}

.product-description {
  color: var(--muted);
  line-height: 1.5;
}

.spec-list {
  display: grid;
  gap: 0.4rem;
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.spec-list div {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr);
  gap: 0.6rem;
}

.spec-list dt {
  color: rgba(247, 248, 255, 0.78);
  font-weight: 700;
}

.spec-list dd {
  margin: 0;
}

.product-footer {
  display: grid;
  gap: 0.8rem;
  padding: 1rem;
  border-top: 1px solid var(--line);
}

.price-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.purchase-quantity {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 5.5rem auto;
  gap: 0.7rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.purchase-quantity[hidden] {
  display: none;
}

.quantity-input,
.basket-quantity {
  width: 100%;
  min-height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: #090b12;
  color: var(--text);
  outline: none;
  padding: 0.62rem;
  text-align: center;
}

.quantity-input:focus,
.basket-quantity:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 245, 255, 0.13);
}

.price {
  color: var(--green);
  font-size: 1.18rem;
  font-weight: 800;
}

.stock {
  color: var(--amber);
  font-size: 0.86rem;
}

.card-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
}

.card-actions button,
.card-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.62rem 0.72rem;
  text-align: center;
  text-decoration: none;
}

.card-actions .buy-button {
  background: rgba(255, 61, 242, 0.13);
  border-color: rgba(255, 61, 242, 0.45);
}

.details-link {
  grid-column: 1 / -1;
  background: rgba(53, 245, 255, 0.12);
  border-color: rgba(53, 245, 255, 0.38);
}

.add-button {
  background: rgba(156, 255, 87, 0.11);
}

.shipping-band,
.contact-band,
.faq-band {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(1rem, 4vw, 3rem);
  width: min(1380px, calc(100% - 2rem));
  margin: 0 auto 2rem;
  padding: clamp(1.2rem, 4vw, 2rem) 0;
  border-top: 1px solid var(--line);
}

.shipping-copy {
  color: var(--muted);
  line-height: 1.6;
}

.faq-list {
  display: grid;
  gap: 0.7rem;
}

.faq-list details {
  border: 1px solid rgba(53, 245, 255, 0.22);
  border-radius: 8px;
  background: rgba(16, 19, 28, 0.78);
  box-shadow: var(--shadow);
}

.faq-list summary {
  cursor: pointer;
  padding: 0.9rem 1rem;
  color: var(--text);
  font-weight: 800;
}

.faq-list p {
  margin: 0;
  padding: 0 1rem 1rem;
  color: var(--muted);
  line-height: 1.6;
}

.shipping-rate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.75rem;
}

.shipping-rate {
  display: grid;
  gap: 0.4rem;
  min-height: 8.5rem;
  padding: 1rem;
  border: 1px solid rgba(255, 61, 242, 0.38);
  border-radius: 8px;
  background: rgba(255, 61, 242, 0.1);
}

.shipping-rate strong {
  color: #ffe9fd;
}

.shipping-rate span {
  color: var(--green);
  font-size: 0.92rem;
  font-weight: 800;
}

.shipping-rate small {
  color: var(--muted);
  line-height: 1.4;
}

.shipping-rate-list {
  display: grid;
  gap: 0.35rem;
  padding: 0;
  margin: 0.45rem 0 0;
  list-style: none;
}

.shipping-rate-list li {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.35rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.shipping-rate-list li span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 400;
}

.shipping-rate-list strong {
  color: var(--text);
  white-space: nowrap;
}

.contact-band p {
  color: var(--muted);
  line-height: 1.65;
}

.site-footer {
  display: grid;
  gap: 0.3rem;
  width: min(1380px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.1rem 0 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--cyan);
}

.contact-form {
  display: grid;
  gap: 0.7rem;
  padding: 1rem;
}

.primary-button,
.ghost-button {
  padding: 0.72rem 1rem;
}

.basket-panel {
  position: fixed;
  z-index: 40;
  top: 0;
  right: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  width: min(420px, 100%);
  height: 100vh;
  border-left: 1px solid var(--line);
  background: rgba(10, 12, 19, 0.97);
  box-shadow: var(--shadow);
  transform: translateX(100%);
  transition: transform 180ms ease;
}

.basket-panel.is-open {
  transform: translateX(0);
}

.basket-header,
.basket-footer {
  padding: 1rem;
  border-bottom: 1px solid var(--line);
}

.basket-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.basket-footer {
  display: grid;
  gap: 0.7rem;
  border-top: 1px solid var(--line);
  border-bottom: 0;
}

.basket-shipping {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.basket-shipping select {
  min-height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: #090b12;
  color: var(--text);
  padding: 0.65rem;
}

.basket-items {
  overflow: auto;
  padding: 1rem;
}

.basket-item {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}

.basket-item img {
  width: 72px;
  aspect-ratio: 1;
  border-radius: 8px;
  object-fit: contain;
  background: #090b12;
}

.basket-line-actions {
  display: grid;
  grid-template-columns: 5rem 34px;
  gap: 0.5rem;
  align-items: end;
}

.basket-line-actions label {
  display: grid;
  gap: 0.25rem;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
}

.basket-quantity {
  min-height: 34px;
  padding: 0.3rem;
}

.basket-item h3 {
  margin: 0 0 0.25rem;
  font-size: 0.95rem;
}

.basket-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.remove-button {
  min-width: 34px;
  min-height: 34px;
  border: 1px solid rgba(255, 107, 107, 0.45);
  border-radius: 8px;
  background: rgba(255, 107, 107, 0.1);
  color: var(--danger);
  padding: 0.35rem 0.65rem;
  font-weight: 800;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  z-index: 50;
  max-width: min(560px, calc(100% - 2rem));
  padding: 0.85rem 1rem;
  border: 1px solid rgba(53, 245, 255, 0.36);
  border-radius: 8px;
  background: rgba(10, 12, 19, 0.94);
  color: var(--text);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translate(-50%, 1rem);
  transition: opacity 160ms ease, transform 160ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.empty-state {
  margin: 1rem 0 0;
  padding: 1rem;
  border: 1px dashed rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  color: var(--muted);
}

.checkout-return {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.checkout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: 1rem;
  width: min(1380px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 3rem) 0;
}

.checkout-main,
.checkout-summary,
.checkout-form,
.checkout-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 19, 28, 0.78);
  box-shadow: var(--shadow);
}

.checkout-main {
  min-width: 0;
  padding: clamp(1rem, 2vw, 1.4rem);
}

.checkout-summary {
  position: sticky;
  top: 86px;
  align-self: start;
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

.checkout-items {
  display: grid;
  gap: 0.8rem;
}

.checkout-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 0.85rem;
  box-shadow: none;
}

.checkout-item img {
  width: 96px;
  aspect-ratio: 1;
  border-radius: 8px;
  object-fit: contain;
  background: #090b12;
}

.checkout-item h3 {
  margin-bottom: 0.25rem;
}

.checkout-item p {
  margin: 0;
  color: var(--muted);
}

.checkout-item-total {
  color: var(--green);
  font-weight: 800;
  white-space: nowrap;
}

.checkout-item-actions {
  display: grid;
  gap: 0.55rem;
  justify-items: end;
}

.checkout-form {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
  padding: 1rem;
  box-shadow: none;
}

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

.checkout-form label {
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.83rem;
  font-weight: 700;
}

.checkout-form input,
.checkout-form textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: #090b12;
  color: var(--text);
  outline: none;
  padding: 0.72rem;
}

.summary-lines {
  display: grid;
  gap: 0.6rem;
  padding: 0.8rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.summary-line {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
}

.summary-line strong,
.summary-total {
  color: var(--text);
}

.summary-total {
  font-size: 1.2rem;
  font-weight: 800;
}

.checkout-status {
  min-height: 1.3rem;
  margin: 0;
  color: var(--amber);
  line-height: 1.45;
}

.checkout-note {
  margin: 0;
  padding: 0.85rem;
  border: 1px solid rgba(255, 209, 102, 0.28);
  border-radius: 8px;
  background: rgba(255, 209, 102, 0.08);
  color: var(--amber);
  line-height: 1.45;
}

.listing-shell {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  gap: 1rem;
  width: min(1380px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 3rem) 0;
}

.listing-media,
.listing-details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 19, 28, 0.78);
  box-shadow: var(--shadow);
}

.listing-media {
  align-self: start;
  overflow: hidden;
}

.listing-media .tag-row {
  padding: 1rem;
}

.listing-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #090b12;
}

.listing-thumbnails {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  padding: 0.75rem;
  border-top: 1px solid var(--line);
}

.thumbnail-button {
  min-height: auto;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: #090b12;
}

.thumbnail-button.is-active {
  border-color: var(--cyan);
  box-shadow: 0 0 18px rgba(53, 245, 255, 0.2);
}

.thumbnail-button img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
}

.listing-details {
  display: grid;
  gap: 1rem;
  align-self: start;
  padding: clamp(1rem, 2.4vw, 1.6rem);
}

.listing-details h1 {
  margin-bottom: 0.4rem;
  font-size: clamp(2rem, 4.6vw, 4.2rem);
}

.listing-preview {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.55;
}

.listing-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.7rem;
}

.listing-summary-grid div,
.listing-description {
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  background: rgba(9, 11, 18, 0.78);
}

.listing-summary-grid div {
  display: grid;
  gap: 0.25rem;
  min-height: 5.5rem;
  padding: 0.85rem;
}

.listing-summary-grid span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.listing-summary-grid strong {
  align-self: end;
  color: var(--text);
  font-size: 1.05rem;
}

.listing-summary-grid .price-summary strong {
  color: var(--green);
  font-size: 1.25rem;
}

.listing-description {
  padding: 1rem;
  color: var(--muted);
  line-height: 1.65;
}

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

.listing-manual {
  display: flex;
}

.listing-option-panel {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 1rem;
  border: 1px solid rgba(53, 245, 255, 0.22);
  border-radius: 8px;
  background: rgba(53, 245, 255, 0.06);
}

.listing-option-panel[hidden] {
  display: none;
}

.listing-option-panel legend {
  padding: 0 0.35rem;
  color: var(--green);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

.listing-options {
  display: grid;
  gap: 0.65rem;
}

.listing-option-choice {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  background: rgba(9, 11, 18, 0.72);
}

.listing-option-choice.is-selected {
  border-color: rgba(53, 245, 255, 0.42);
  box-shadow: 0 0 22px rgba(53, 245, 255, 0.12);
}

.option-choice-image {
  width: 72px;
  aspect-ratio: 1;
  border-radius: 8px;
  object-fit: contain;
  background: #090b12;
}

.listing-option-choice strong,
.listing-option-choice small {
  display: block;
}

.listing-option-choice small,
.listing-option-note {
  color: var(--muted);
  line-height: 1.45;
}

.listing-option-choice b {
  color: var(--green);
  white-space: nowrap;
}

.option-quantity {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
}

.option-purchase-controls {
  display: grid;
  grid-template-columns: 5.5rem auto;
  gap: 0.55rem;
  align-items: end;
}

.option-add-button,
.inline-add-button {
  min-height: 42px;
  padding-inline: 0.9rem;
}

.listing-option-note {
  margin: 0;
}

.listing-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.7rem;
}

.listing-shipping-line {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.confirmation-shell {
  width: min(980px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 4rem) 0;
}

.confirmation-panel {
  padding: clamp(1.25rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 19, 28, 0.82);
  box-shadow: var(--shadow);
}

.legal-panel {
  display: grid;
  gap: 0.75rem;
}

.legal-panel h2 {
  margin: 0.8rem 0 0;
  color: var(--green);
  font-size: 1.15rem;
}

.legal-panel p {
  max-width: 880px;
  color: var(--muted);
  line-height: 1.65;
}

.legal-panel ul {
  margin: 0 0 0.5rem;
  padding-left: 1.2rem;
  color: var(--muted);
  line-height: 1.65;
}

.legal-form {
  display: grid;
  gap: 0.35rem;
  max-width: 720px;
  padding: 1rem;
  border: 1px solid rgba(53, 245, 255, 0.22);
  border-radius: 8px;
  background: rgba(9, 11, 18, 0.72);
}

.legal-form p {
  margin: 0;
}

.legal-source-list a {
  color: var(--cyan);
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .top-nav {
    display: none;
  }

  .catalogue-shell,
  .shipping-band,
  .contact-band,
  .faq-band,
  .checkout-shell,
  .listing-shell {
    grid-template-columns: 1fr;
  }

  .checkout-summary {
    position: static;
  }

  .intro-panel {
    grid-template-columns: 1fr;
    background-size: cover;
  }

  .intro-panel h1 {
    font-size: 3.2rem;
  }

  .filters {
    position: static;
  }
}

@media (max-width: 560px) {
  .site-header {
    gap: 0.6rem;
    padding-inline: 0.75rem;
  }

  .brand-mark {
    width: 56px;
    height: 56px;
  }

  .brand small {
    display: none;
  }

  .basket-button {
    padding-inline: 0.65rem;
  }

  .intro-panel {
    min-height: 320px;
    align-items: end;
    padding: 1rem;
    background-position: center;
  }

  .intro-panel h1 {
    margin-bottom: 1rem;
    font-size: 2.35rem;
  }

  .section-heading,
  .price-line {
    align-items: start;
    flex-direction: column;
  }

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

  .card-actions .buy-button {
    grid-column: auto;
  }

  .details-link {
    grid-column: auto;
  }

  .checkout-item,
  .checkout-form-grid,
  .listing-summary-grid,
  .listing-actions,
  .listing-option-choice {
    grid-template-columns: 1fr;
  }

  .checkout-item img {
    width: 100%;
    aspect-ratio: 4 / 3;
  }
}