* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--tg-theme-bg-color, #f5f5f5);
  color: var(--tg-theme-text-color, #1a1a1a);
  min-height: 100vh;
  padding-bottom: 80px;
}

.screen {
  max-width: 500px;
  margin: 0 auto;
  padding: 16px;
}

.hidden {
  display: none;
}

h1 {
  font-size: 24px;
  text-align: center;
  margin-bottom: 16px;
}

h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

/* Categories */
.categories {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.cat-btn {
  padding: 8px 16px;
  border: none;
  border-radius: 20px;
  background: var(--tg-theme-secondary-bg-color, #e0e0e0);
  color: var(--tg-theme-text-color, #1a1a1a);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
}

.cat-btn.active {
  background: var(--tg-theme-button-color, #3390ec);
  color: var(--tg-theme-button-text-color, #fff);
}

/* Menu grid */
.menu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.menu-card {
  background: var(--tg-theme-bg-color, #fff);
  border-radius: 16px;
  padding: 16px;
  text-align: center;
  border: 1px solid var(--tg-theme-secondary-bg-color, #e0e0e0);
}

.menu-card .item-name {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.menu-card .item-price {
  font-size: 18px;
  font-weight: 700;
  color: var(--tg-theme-button-color, #3390ec);
  margin-bottom: 12px;
}

.menu-card .add-btn {
  width: 100%;
  padding: 8px;
  border: none;
  border-radius: 10px;
  background: var(--tg-theme-button-color, #3390ec);
  color: var(--tg-theme-button-text-color, #fff);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.menu-card .qty-control {
  justify-content: center;
}

/* Cart bar */
.cart-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  max-width: 500px;
  margin: 0 auto;
  background: var(--tg-theme-button-color, #3390ec);
  color: var(--tg-theme-button-text-color, #fff);
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 16px 16px 0 0;
}

/* Cart screen */
.header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.back-btn {
  border: none;
  background: var(--tg-theme-secondary-bg-color, #e0e0e0);
  color: var(--tg-theme-text-color, #1a1a1a);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
}

.cart-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--tg-theme-secondary-bg-color, #e0e0e0);
}

.cart-item-info .name {
  font-size: 15px;
  font-weight: 600;
}

.cart-item-info .price {
  font-size: 13px;
  opacity: 0.7;
}

.qty-control {
  display: flex;
  align-items: center;
  gap: 12px;
}

.qty-btn {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: var(--tg-theme-secondary-bg-color, #e0e0e0);
  color: var(--tg-theme-text-color, #1a1a1a);
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
}

.qty-display {
  font-size: 16px;
  font-weight: 600;
  min-width: 24px;
  text-align: center;
}

.total-row {
  display: flex;
  justify-content: space-between;
  padding: 16px 0;
  font-size: 18px;
  font-weight: 700;
}

/* Pickup options */
.pickup-section {
  margin-bottom: 20px;
}

.pickup-section label {
  display: block;
  font-size: 14px;
  margin-bottom: 8px;
  opacity: 0.7;
}

.pickup-options {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pickup-opt {
  padding: 8px 16px;
  border: 2px solid var(--tg-theme-secondary-bg-color, #e0e0e0);
  border-radius: 10px;
  background: transparent;
  color: var(--tg-theme-text-color, #1a1a1a);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}

.pickup-opt.active {
  border-color: var(--tg-theme-button-color, #3390ec);
  background: var(--tg-theme-button-color, #3390ec);
  color: var(--tg-theme-button-text-color, #fff);
}

/* Primary button */
.btn-primary {
  width: 100%;
  padding: 16px;
  border: none;
  border-radius: 12px;
  background: var(--tg-theme-button-color, #3390ec);
  color: var(--tg-theme-button-text-color, #fff);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

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

/* Payment screen */
.payment-info {
  text-align: center;
  margin-bottom: 20px;
}

.payment-info h2 {
  margin-bottom: 4px;
}

.payment-info p {
  opacity: 0.7;
}

.qr-section {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

#qr-image {
  width: 240px;
  height: 240px;
  border-radius: 12px;
  pointer-events: none;
  user-select: none;
}

.qr-hint {
  text-align: center;
  font-size: 15px;
  margin-bottom: 4px;
}

.qr-timer {
  text-align: center;
  font-size: 13px;
  opacity: 0.6;
  margin-bottom: 20px;
}

.payment-status {
  text-align: center;
}

.payment-status p {
  margin-top: 12px;
  opacity: 0.7;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--tg-theme-secondary-bg-color, #e0e0e0);
  border-top-color: var(--tg-theme-button-color, #3390ec);
  border-radius: 50%;
  margin: 0 auto;
  animation: spin 1s linear infinite;
}

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

/* Success */
#screen-success {
  text-align: center;
  padding-top: 60px;
}

.success-icon {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
}

#screen-success h2 {
  margin-bottom: 8px;
}

#screen-success p {
  opacity: 0.7;
  margin-bottom: 4px;
}

.pickup-instruction {
  margin: 16px 0 24px;
  font-size: 15px;
}

/* Error */
#screen-error {
  text-align: center;
  padding-top: 60px;
}

.error-icon {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
}

#error-message {
  opacity: 0.7;
  margin-bottom: 24px;
}

/* Shop closed */
#screen-closed {
  text-align: center;
  padding-top: 60px;
}

.closed-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

#screen-closed h2 {
  margin-bottom: 8px;
}

#screen-closed p {
  opacity: 0.7;
}