:root {
  color-scheme: dark;
  --bg: #0a0a0a;
  --fg: #f5f5f5;
  --muted: #999;
  --accent: #e2e2e2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Helvetica Neue", Arial, sans-serif;
}

header {
  padding: 2rem 1.5rem 1rem;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

header p {
  color: var(--muted);
  margin-top: 0.5rem;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.product {
  background: #141414;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #262626;
}

.product img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}

.placeholder-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  background: #1a1a1a;
  font-size: 0.9rem;
}

.product-body {
  padding: 1.25rem;
}

.product-body h2 {
  font-size: 1.1rem;
  margin: 0 0 0.25rem;
}

.price {
  color: var(--muted);
  margin: 0 0 1rem;
}

.controls {
  display: flex;
  gap: 0.75rem;
}

select {
  flex: 1;
  padding: 0.6rem;
  background: #1f1f1f;
  color: var(--fg);
  border: 1px solid #333;
  border-radius: 8px;
}

button {
  padding: 0.6rem 1.25rem;
  background: var(--accent);
  color: #111;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.error {
  color: #ff6b6b;
  margin-top: 0.75rem;
  font-size: 0.9rem;
}

.cart-bar {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
}

.cart-toggle {
  padding: 0.75rem 1.25rem;
  background: var(--accent);
  color: #111;
  border: none;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.cart-panel {
  width: min(320px, 90vw);
  background: #141414;
  border: 1px solid #262626;
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

#cart-items {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 40vh;
  overflow-y: auto;
}

#cart-items li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid #262626;
  font-size: 0.9rem;
}

.cart-item-name {
  flex: 1;
}

.cart-item-qty {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.cart-item-qty button {
  padding: 0.1rem 0.5rem;
  font-size: 0.9rem;
}

.cart-panel-footer {
  padding-top: 0.75rem;
}

.cart-shipping {
  color: var(--muted);
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
}

#cart-checkout {
  width: 100%;
}

.suggest {
  max-width: 560px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
  text-align: center;
}

.suggest h2 {
  font-size: 1.3rem;
  margin: 0 0 0.25rem;
}

.suggest .muted {
  color: var(--muted);
  margin: 0 0 1.25rem;
}

.suggest form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.suggest textarea,
.suggest input {
  padding: 0.6rem;
  background: #1f1f1f;
  color: var(--fg);
  border: 1px solid #333;
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
}

.suggest textarea {
  min-height: 5rem;
  resize: vertical;
}

.success {
  color: #6bce6b;
  margin-top: 0.75rem;
  font-size: 0.9rem;
}

footer {
  text-align: center;
  color: var(--muted);
  padding-bottom: 3rem;
  font-size: 0.85rem;
}