:root {
  --accent: #e8447a;
  --accent-dark: #c72f61;
  --ink: var(--tg-theme-text-color, #1c1420);
  --ink-soft: #8a7d87;
  --bg: var(--tg-theme-bg-color, #fdf7f9);
  --card-bg: var(--tg-theme-secondary-bg-color, #ffffff);
  --border: #f1e3e8;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

.site-header {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 18px 16px 14px;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 5;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent-dark);
}

.brand-tagline {
  font-size: 13px;
  color: var(--ink-soft);
}

.catalog {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  padding: 14px;
}

.catalog > p {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--ink-soft);
  padding: 40px 16px;
  font-size: 15px;
}

.product-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 1px 3px rgba(30, 10, 20, 0.04);
}

.product-card:active {
  transform: scale(0.97);
  box-shadow: 0 1px 2px rgba(30, 10, 20, 0.06);
}

.product-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
  background: var(--border);
}

.product-name {
  padding: 10px 10px 0;
  font-weight: 600;
  font-size: 14px;
  line-height: 1.3;
}

.product-price {
  padding: 4px 10px 10px;
  color: var(--accent-dark);
  font-weight: 700;
  font-size: 14px;
}

.detail {
  padding: 16px;
  max-width: 480px;
  margin: 0 auto;
}

#back-button {
  background: none;
  border: none;
  color: var(--accent-dark);
  font-size: 15px;
  font-weight: 600;
  padding: 4px 0 14px;
  cursor: pointer;
}

.detail img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--border);
}

.detail h2 {
  font-size: 20px;
  margin: 16px 0 4px;
}

.detail > p {
  color: var(--ink-soft);
  line-height: 1.5;
  margin: 0 0 8px;
}

.detail .product-price {
  padding: 0;
  font-size: 20px;
  margin-bottom: 16px;
}

.detail form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.detail input {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--ink);
  font-size: 16px;
  outline: none;
  transition: border-color 0.15s ease;
}

.detail input:focus {
  border-color: var(--accent);
}

.payment-note {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
}

.detail button[type="submit"] {
  padding: 14px;
  border-radius: 10px;
  border: none;
  background: var(--tg-theme-button-color, var(--accent));
  color: var(--tg-theme-button-text-color, #fff);
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: opacity 0.15s ease;
  margin-top: 4px;
}

.detail button[type="submit"]:active {
  opacity: 0.85;
}

.detail button[type="submit"]:disabled {
  opacity: 0.5;
  cursor: default;
}

#order-result {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  color: var(--accent-dark);
}

.hidden {
  display: none;
}