* {
  box-sizing: border-box;
}

html {
  background-color: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: "Helvetica Neue", "Arial Narrow", Arial, sans-serif;
}

.shop-shell {
  width: min(1120px, calc(100vw - 28px));
  margin: 0 auto;
  padding:
    max(20px, env(safe-area-inset-top))
    0
    max(28px, env(safe-area-inset-bottom));
}

.shop-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.back-link,
.shop-link,
.primary-link {
  color: var(--ink);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.74rem;
}

.shop-header h1 {
  margin: 12px 0 0;
  font-family: "Arial Black", Impact, sans-serif;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 0.95;
}

.shop-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.shop-link,
.primary-link,
.secondary-btn,
.primary-btn {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(6, 22, 50, 0.78);
  color: var(--ink);
  font: inherit;
}

.primary-link,
.primary-btn {
  background: var(--ink);
  color: var(--bg);
}

.shop-panel {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--border);
  background: rgba(13, 36, 80, 0.84);
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-end;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 216, 77, 0.12);
}

.panel-heading h2 {
  margin: 0;
  font-family: "Arial Black", Impact, sans-serif;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
}

.summary-line {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.74rem;
  color: var(--ink-light);
}

.item-list {
  margin-top: 14px;
  display: grid;
  gap: 12px;
}

.cart-item {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 14px;
  border: 1px solid rgba(255, 216, 77, 0.12);
  background: rgba(6, 22, 50, 0.56);
}

.cart-item h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

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

.drawer-qty {
  display: flex;
  align-items: center;
  gap: 8px;
}

.qty-btn {
  border: 1px solid rgba(255, 216, 77, 0.18);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  width: 36px;
  height: 36px;
  font: inherit;
  font-size: 1rem;
  cursor: pointer;
}

.qty-count {
  min-width: 18px;
  text-align: center;
  color: var(--ink);
}

.shop-actions {
  margin-top: 18px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.checkout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.7fr);
  gap: 18px;
  align-items: start;
  margin-top: 18px;
}

.checkout-grid .shop-panel {
  margin-top: 0;
}

.checkout-form {
  margin-top: 14px;
  display: grid;
  gap: 12px;
}

.checkout-form label {
  display: grid;
  gap: 8px;
  color: var(--ink-light);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.checkout-form input,
.checkout-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: rgba(6, 22, 50, 0.82);
  color: var(--ink);
  padding: 12px 14px;
  border-radius: 14px;
  font: inherit;
}

.empty-state {
  color: var(--ink-muted);
  font-style: italic;
}

@media (max-width: 860px) {
  .checkout-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .shop-shell {
    width: min(100vw - 18px, 1120px);
  }

  .shop-header,
  .panel-heading {
    flex-direction: column;
    align-items: flex-start;
  }

  .cart-item {
    flex-direction: column;
  }
}