:root {
  --color-brand: #ED1C24;
  --color-brand-soft: #FDF0F0;
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #6B7280;
  --color-surface: #FFFFFF;
  --color-border: #E5E7EB;
  --spacing-base: 8px;
  --radius-control: 16px;
  --color-menu-row: #F4F4F6;
  --color-cart-items: #F2F2F2;
  --color-food-card: #F4F4F6;
  --color-checkout-panel: #5CB254;
  --size-floating-button: 52px;
  --color-floating-button: rgba(30, 30, 30, 0.92);
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

html,
body {
  margin: 0;
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-family: var(--font-family-base);
  font-size: 1rem;
}

.screen {
  padding: calc(var(--spacing-base) * 2);
  padding-top: calc(5px + env(safe-area-inset-top));
  padding-bottom: calc(var(--size-floating-button) + var(--spacing-base) * 4 + env(safe-area-inset-bottom));
}

.top-bar {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-base) * 2);
  margin-bottom: calc(var(--spacing-base) * 2);
}

.screen-title {
  margin: 0;
  font-size: 1.5rem;
}

.menu-button,
.back-button {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  min-width: 44px;
  min-height: 44px;
  padding: 0 calc(var(--spacing-base) * 1.5);
  border: none;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--color-text-primary);
}

.icon {
  flex: none;
  width: 24px;
  height: 24px;
}

.menu-line {
  display: block;
  width: 24px;
  height: 3px;
  border-radius: 2px;
  background: var(--color-text-primary);
}

.category-row {
  display: flex;
  gap: var(--spacing-base);
  overflow-x: auto;
  margin: 0 calc(var(--spacing-base) * -2);
  padding: 0 var(--spacing-base) var(--spacing-base);
}

.category-button {
  flex: 0 0 auto;
  height: 45px;
  padding: 0 calc(var(--spacing-base) * 3);
  border: none;
  border-radius: 8px;
  background: var(--color-brand);
  color: var(--color-surface);
  font: inherit;
  font-size: 1.125rem;
  font-weight: 700;
}

.item-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-base);
}

.food-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-base);
  width: 100%;
  padding: calc(var(--spacing-base) * 2);
  border: none;
  border-radius: 12px;
  background: var(--color-food-card);
  color: var(--color-text-primary);
  font: inherit;
  text-align: left;
}

.food-card-name {
  font-size: 1.0625rem;
  font-weight: 700;
}

.food-card-prices {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.price-chip {
  padding: 4px 10px;
  border-radius: 8px;
  background: var(--color-brand-soft);
  color: var(--color-brand);
  font-size: 0.875rem;
  font-weight: 700;
}

.search-field {
  box-sizing: border-box;
  width: 100%;
  min-height: 48px;
  padding: 0 calc(var(--spacing-base) * 2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  font: inherit;
}

.empty-message {
  margin: calc(var(--spacing-base) * 4) 0;
  color: var(--color-text-secondary);
  text-align: center;
}

tabbar {
  position: fixed;
  right: 0;
  bottom: calc(env(safe-area-inset-bottom) - 2px);
  left: 0;
  justify-content: center;
  gap: var(--spacing-base);
  padding: 0;
  background: transparent;
  pointer-events: none;
}

tabbar tab {
  width: var(--size-floating-button);
  height: var(--size-floating-button);
  border-radius: 12px;
  background: var(--color-floating-button);
  color: var(--color-surface);
  backdrop-filter: blur(12px);
  pointer-events: auto;
}

tabbar tab[active] {
  background: var(--color-brand);
}

.tab-icon {
  width: 26px;
  height: 26px;
}

sidebar {
  z-index: 200;
  width: min(320px, 85vw);
  padding: calc(5px + env(safe-area-inset-top)) calc(var(--spacing-base) * 2) calc(var(--spacing-base) * 2);
  background: var(--color-surface);
  transition: transform 0.25s ease, visibility 0.25s;
}

sidebar[collapsed] {
  transform: translateX(-100%);
  visibility: hidden;
}

.menu-header {
  margin-bottom: calc(var(--spacing-base) * 2);
}

.menu-close {
  display: flex;
  align-items: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 calc(var(--spacing-base) * 1.5);
  border: none;
  background: transparent;
  color: var(--color-text-primary);
}

.menu-row {
  display: flex;
  align-items: center;
  gap: calc(var(--spacing-base) * 2);
  width: 100%;
  min-height: 56px;
  padding: 0 calc(var(--spacing-base) * 2);
  border: none;
  border-radius: 12px;
  background: var(--color-menu-row);
  color: var(--color-text-primary);
  font: inherit;
  font-size: 1.125rem;
}

.menu-row-label {
  flex: 1;
  text-align: left;
}

.menu-backdrop {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

sidebar:not([collapsed]) ~ .menu-backdrop {
  opacity: 1;
  pointer-events: auto;
}

.cart-screen {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
}

.cart-header {
  margin-bottom: var(--spacing-base);
  padding: calc(5px + env(safe-area-inset-top)) calc(var(--spacing-base) * 2) 0;
}

.cart-items {
  flex: 1;
  margin-bottom: var(--spacing-base);
  padding: calc(var(--spacing-base) * 2);
  overflow-y: auto;
  border-radius: 24px;
  background: var(--color-cart-items);
}

.cart-summary {
  padding: calc(var(--spacing-base) * 3) calc(var(--spacing-base) * 3) calc(var(--spacing-base) * 2 + env(safe-area-inset-bottom));
  border-radius: 24px 24px 0 0;
  background: var(--color-checkout-panel);
  color: var(--color-surface);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin: 0;
  font-size: 1.125rem;
}

.summary-amount {
  font-weight: 700;
}

.summary-divider {
  margin: calc(var(--spacing-base) * 2) 0;
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.6);
}

.summary-total {
  font-size: 1.5rem;
  font-weight: 700;
}

.checkout-button {
  width: 100%;
  height: 56px;
  margin-top: calc(var(--spacing-base) * 3);
  border: none;
  border-radius: 28px;
  background: var(--color-surface);
  color: var(--color-text-primary);
  font: inherit;
  font-size: 1.125rem;
  font-weight: 700;
}