/* ============================================================
   Harbin Kitchen PWA — Base Styles
   All visual tokens come from theme.css (CSS variables).
   ============================================================ */

/* ── Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-primary);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Chinese text fallback */
.zh {
  font-family: var(--font-chinese);
}

/* ── App Shell ── */
#app {
  max-width: var(--max-width);
  margin: 0 auto;
  min-height: 100dvh;
  position: relative;
  background: var(--color-bg);
}

/* ── Header ── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  box-shadow: var(--shadow-md);
}

.header__logo {
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.header__logo span {
  font-family: var(--font-chinese);
  font-size: var(--font-size-sm);
  opacity: 0.7;
  margin-left: 6px;
}

.header__badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--color-accent);
  color: #fff;
  font-size: var(--font-size-xs);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.header__spacer {
  flex: 1;
}

.header__btn {
  background: none;
  border: none;
  color: var(--color-text-inverse);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.header__btn:active {
  background: rgba(255,255,255,0.15);
}

/* ── Language Toggle ── */
.lang-toggle {
  display: flex;
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius-full);
  overflow: hidden;
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.lang-toggle__btn {
  background: none;
  border: none;
  color: var(--color-text-inverse);
  padding: 4px 10px;
  cursor: pointer;
  opacity: 0.5;
  transition: all var(--transition-fast);
}

.lang-toggle__btn.active {
  opacity: 1;
  background: rgba(255,255,255,0.2);
}

/* ── Category Nav ── */
.category-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 90;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 12px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.category-nav::-webkit-scrollbar {
  display: none;
}

.category-nav__pill {
  flex-shrink: 0;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.category-nav__pill:active {
  transform: scale(0.96);
}

.category-nav__pill.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

/* ── Menu Section ── */
.menu-section {
  padding: 12px 16px;
}

.menu-section__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.menu-section__subtitle {
  font-family: var(--font-chinese);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.menu-section__discount-tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.menu-section__no-discount-tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: var(--color-bg-warm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  font-weight: 500;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* ── Menu Item Card ── */
.menu-item {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 10px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 12px;
  transition: box-shadow var(--transition-fast);
}

.menu-item:active {
  box-shadow: var(--shadow-md);
}

/* Image thumbnail */
.menu-item__img-wrap {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg);
}

.menu-item__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.2s ease;
}

.menu-item:active .menu-item__img {
  transform: scale(1.05);
}

.menu-item--has-img .menu-item__info {
  min-width: 0;
  flex: 1;
}

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

.menu-item__name {
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 2px;
}

.menu-item__code {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 4px;
  margin-right: 6px;
  vertical-align: middle;
}

.menu-item__name-zh {
  font-family: var(--font-chinese);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.menu-item__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.4;
  margin-bottom: 8px;
}

.menu-item__prices {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.menu-item__price {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-primary);
}

.menu-item__price-original {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: line-through;
}

.menu-item__discount-badge {
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 1px 6px;
  border-radius: var(--radius-full);
}

/* ── Add-to-cart Button ── */
.add-btn {
  align-self: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: none;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.add-btn:active {
  transform: scale(0.9);
  background: var(--color-primary-light);
}

.add-btn--outline {
  background: transparent;
  border: 2px solid var(--color-border);
  color: var(--color-text-secondary);
}

.add-btn--outline:active {
  background: var(--color-bg-hover);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ── Cart Bar ── */
.cart-bar {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--max-width);
  height: var(--cart-bar-height);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  z-index: 100;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
  cursor: pointer;
  transition: transform var(--transition-base);
}

.cart-bar.hidden {
  transform: translateX(-50%) translateY(100%);
}

.cart-bar__icon {
  font-size: 22px;
  position: relative;
}

.cart-bar__count {
  position: absolute;
  top: -6px;
  right: -8px;
  background: var(--color-accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cart-bar__text {
  flex: 1;
  font-size: var(--font-size-base);
  font-weight: 600;
}

.cart-bar__total {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.cart-bar__arrow {
  font-size: 18px;
  opacity: 0.7;
}

/* ── Cart Page ── */
.cart-page {
  padding: 16px;
  padding-bottom: calc(var(--cart-bar-height) + 24px);
}

.cart-page__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 16px;
}

.cart-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-divider);
}

.cart-item__img-wrap {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg);
}

.cart-item__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

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

.cart-item__name {
  font-weight: 600;
  font-size: var(--font-size-base);
}

.cart-item__code {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 4px;
  margin-right: 4px;
  vertical-align: middle;
}

.cart-item__name-zh {
  font-family: var(--font-chinese);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.cart-item__price {
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  font-weight: 600;
}

.cart-item__price-original {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-decoration: line-through;
  margin-left: 4px;
}

.cart-item__qty {
  display: flex;
  align-items: center;
  gap: 8px;
}

.qty-btn {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  background: var(--color-bg-card);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.qty-btn:active {
  background: var(--color-bg-hover);
}

.qty-btn--minus {
  color: var(--color-danger);
}

.qty-btn--plus {
  color: var(--color-success);
}

.cart-item__qty-num {
  font-weight: 700;
  font-size: var(--font-size-base);
  min-width: 20px;
  text-align: center;
}

.cart-item__line-total {
  font-weight: 700;
  font-size: var(--font-size-base);
  white-space: nowrap;
}

/* ── Cart Summary ── */
.cart-summary {
  margin-top: 20px;
  padding: 16px;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.cart-summary__row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: var(--font-size-base);
}

.cart-summary__row--discount {
  color: var(--color-accent);
  font-weight: 600;
}

.cart-summary__row--total {
  font-size: var(--font-size-lg);
  font-weight: 700;
  border-top: 2px solid var(--color-border);
  padding-top: 10px;
  margin-top: 4px;
}

/* ── Order Form ── */
.order-form {
  margin-top: 20px;
}

.order-form__group {
  margin-bottom: 14px;
}

.order-form__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--color-text-secondary);
}

.order-form__input {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: var(--font-primary);
  background: var(--color-bg-card);
  transition: border-color var(--transition-fast);
}

.order-form__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.order-form__textarea {
  resize: vertical;
  min-height: 60px;
}

.payment-hint {
  background: #FFF8E1;
  border: 1.5px solid #FFB300;
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin-bottom: 14px;
  font-size: var(--font-size-sm);
  color: #5D4037;
  line-height: 1.5;
}

.submit-btn {
  width: 100%;
  padding: 14px;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-md);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: 8px;
}

.submit-btn:active {
  background: var(--color-primary-light);
  transform: scale(0.98);
}

.submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Order Confirmation ── */
.order-confirm {
  text-align: center;
  padding: 40px 20px;
}

.order-confirm__icon {
  font-size: 64px;
  margin-bottom: 16px;
}

.order-confirm__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 8px;
}

.order-confirm__number {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.order-confirm__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 300px;
  margin: 0 auto 24px;
}

.order-confirm__btn {
  padding: 12px 32px;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
}

/* ── Page transitions ── */
.page {
  display: none;
  padding-bottom: calc(var(--cart-bar-height) + 16px);
  animation: fadeIn 200ms ease;
}

.page.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--color-text-secondary);
}

.empty-state__icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.empty-state__text {
  font-size: var(--font-size-base);
}

/* ── Back Button ── */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: 8px 0;
  cursor: pointer;
  margin-bottom: 12px;
}

.back-btn:active {
  color: var(--color-primary);
}

/* ── Utility ── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ── Welcome / Order Type Page ── */
.welcome-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: 32px 24px;
  text-align: center;
  background: var(--color-bg);
}

.welcome-page__logo {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.welcome-page__logo span {
  font-family: var(--font-chinese);
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-left: 8px;
}

.welcome-page__sub {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: 40px;
}

.welcome-page__cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  max-width: 340px;
}

.welcome-card {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.welcome-card:active {
  transform: scale(0.97);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.welcome-card__icon {
  font-size: 36px;
  margin-bottom: 10px;
}

.welcome-card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 4px;
}

.welcome-card__title span {
  font-family: var(--font-chinese);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-left: 6px;
}

.welcome-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.welcome-card__badge {
  display: inline-block;
  margin-top: 10px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.welcome-card--preorder .welcome-card__badge {
  background: #FFF3E0;
  color: #E65100;
}

/* ── Table Number Input (inline) ── */
.table-input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--color-bg-warm);
  border-bottom: 1px solid var(--color-border);
}

.table-input-row__label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.table-input-row__input {
  width: 70px;
  padding: 6px 10px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  font-family: var(--font-primary);
  background: var(--color-bg-card);
  text-align: center;
}

.table-input-row__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* ── Home Button (in header) ── */
.header__home-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-xs);
  background: rgba(255,255,255,0.15);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.header__home-btn:active {
  background: rgba(255,255,255,0.3);
}

/* ── Mode Tag (read-only label in header) ── */
.header__mode-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: #6B8E23;
  background: rgba(107, 142, 35, 0.12);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* ── Preorder Badge ── */
.menu-item__preorder-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: #FFF3E0;
  color: #E65100;
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-bottom: 4px;
}

/* ── Preorder Confirm Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: fadeIn 150ms ease;
}

.modal-box {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 340px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.modal-box__icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.modal-box__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 8px;
}

.modal-box__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
}

.modal-box__actions {
  display: flex;
  gap: 10px;
}

.modal-box__btn {
  flex: 1;
  padding: 10px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
}

.modal-box__btn--cancel {
  background: var(--color-bg-hover);
  color: var(--color-text-secondary);
}

.modal-box__btn--confirm {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.modal-box__btn:active {
  transform: scale(0.97);
}