/* Основные стили Telegram Mini App */
:root {
  --tg-theme-bg-color: var(--tg-theme-bg-color, #ffffff);
  --tg-theme-text-color: var(--tg-theme-text-color, #000000);
  --tg-theme-hint-color: var(--tg-theme-hint-color, #999999);
  --tg-theme-link-color: var(--tg-theme-link-color, #2481cc);
  --tg-theme-button-color: var(--tg-theme-button-color, #2481cc);
  --tg-theme-button-text-color: var(--tg-theme-button-text-color, #ffffff);
  --tg-theme-secondary-bg-color: var(--tg-theme-secondary-bg-color, #f1f1f1);

  --accent: #2481cc;
  --accent-light: #e8f4fd;
  --danger: #e53935;
  --success: #43a047;
  --border-radius: 12px;
  --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--tg-theme-bg-color);
  color: var(--tg-theme-text-color);
  min-height: 100vh;
  padding-bottom: 80px;
}

/* ── Навигация ── */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--tg-theme-bg-color);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  display: flex;
  z-index: 100;
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.06);
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 4px 8px;
  cursor: pointer;
  border: none;
  background: none;
  color: var(--tg-theme-hint-color);
  font-size: 11px;
  gap: 4px;
  transition: color 0.2s;
  position: relative;
}

.nav-item.active {
  color: var(--accent);
}

.nav-item svg {
  width: 24px;
  height: 24px;
}

.nav-badge {
  position: absolute;
  top: 6px;
  right: calc(50% - 18px);
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

/* ── Экраны ── */
.screen {
  display: none;
  padding: 16px;
  animation: fadeIn 0.2s ease;
}

.screen.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Заголовок страницы ── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.page-title {
  font-size: 20px;
  font-weight: 700;
}

.version-badge {
  font-size: 11px;
  color: var(--tg-theme-hint-color);
  background: var(--tg-theme-secondary-bg-color);
  padding: 2px 8px;
  border-radius: 20px;
}

/* ── Категории ── */
.categories-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 16px;
  scrollbar-width: none;
}

.categories-scroll::-webkit-scrollbar {
  display: none;
}

.category-chip {
  flex-shrink: 0;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1.5px solid var(--accent);
  background: transparent;
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}

.category-chip.active,
.category-chip:hover {
  background: var(--accent);
  color: #fff;
}

/* ── Сетка товаров ── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.product-card {
  background: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  cursor: pointer;
  transition: transform 0.15s;
}

.product-card:active {
  transform: scale(0.97);
}

.product-card__img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #e0e0e0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
}

.product-card__body {
  padding: 10px;
}

.product-card__name {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card__price {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.product-card__stock {
  font-size: 11px;
  color: var(--tg-theme-hint-color);
  margin-top: 2px;
}

.product-card__add-btn {
  width: 100%;
  margin-top: 8px;
  padding: 7px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}

.product-card__add-btn:active {
  opacity: 0.8;
}

/* ── Корзина ── */
.cart-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--tg-theme-hint-color);
}

.cart-empty__icon {
  font-size: 56px;
  margin-bottom: 12px;
}

.cart-empty__text {
  font-size: 16px;
}

.cart-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius);
  padding: 12px;
  margin-bottom: 10px;
}

.cart-item__icon {
  font-size: 32px;
  flex-shrink: 0;
}

.cart-item__info {
  flex: 1;
  min-width: 0;
}

.cart-item__name {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cart-item__price {
  font-size: 13px;
  color: var(--tg-theme-hint-color);
  margin-top: 2px;
}

.cart-item__controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.qty-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  background: transparent;
  color: var(--accent);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}

.qty-btn:active {
  background: var(--accent);
  color: #fff;
}

.qty-value {
  font-size: 15px;
  font-weight: 700;
  min-width: 20px;
  text-align: center;
}

.cart-footer {
  position: sticky;
  bottom: 72px;
  background: var(--tg-theme-bg-color);
  padding: 12px 0 4px;
  border-top: 1px solid rgba(0,0,0,0.06);
}

.cart-total {
  display: flex;
  justify-content: space-between;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
}

.btn-primary {
  width: 100%;
  padding: 14px;
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  border: none;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s;
}

.btn-primary:active {
  opacity: 0.85;
}

.btn-danger {
  width: 100%;
  padding: 12px;
  background: transparent;
  color: var(--danger);
  border: 1.5px solid var(--danger);
  border-radius: var(--border-radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
  transition: background 0.15s, color 0.15s;
}

.btn-danger:active {
  background: var(--danger);
  color: #fff;
}

/* ── Акции ── */
.promo-card {
  background: var(--tg-theme-secondary-bg-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: 14px;
  box-shadow: var(--card-shadow);
}

.promo-card__img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  background: linear-gradient(135deg, #2481cc 0%, #1a5fa8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
}

.promo-card__body {
  padding: 14px;
}

.promo-card__badge {
  display: inline-block;
  background: var(--danger);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
}

.promo-card__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.promo-card__desc {
  font-size: 13px;
  color: var(--tg-theme-hint-color);
  line-height: 1.5;
}

/* ── Лоадер ── */
.loader {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--tg-theme-secondary-bg-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Уведомление ── */
.toast {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%) translateY(-80px);
  background: #333;
  color: #fff;
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  z-index: 200;
  transition: transform 0.3s ease;
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* ── Пустой список ── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--tg-theme-hint-color);
}

.empty-state__icon {
  font-size: 52px;
  margin-bottom: 12px;
}

.empty-state__text {
  font-size: 15px;
}