/* ============================================
   KIOSK MODERN DESIGN SYSTEM
   Pro Max UI/UX Overhaul — 2026-02
   Style: Modern Minimalist (Apple Store / Starbucks)
   Supports: 15-22" kiosk + 10-13" tablet
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Noto+Sans+TC:wght@400;500;600;700;900&display=swap');

/* ============================================
   CSS CUSTOM PROPERTIES
   ============================================ */
:root {
  /* Colors — Light base */
  --km-bg: #F8F9FA;
  --km-bg-secondary: #FFFFFF;
  --km-surface: #FFFFFF;
  --km-surface-hover: #F0F2F5;
  --km-surface-active: #E4E7EB;
  --km-border: #E5E7EB;
  --km-border-focus: #3B82F6;
  --km-text-primary: #111827;
  --km-text-secondary: #6B7280;
  --km-text-tertiary: #9CA3AF;

  /* Brand Accent (overridden by theme) */
  --km-accent: #3B82F6;
  --km-accent-light: #DBEAFE;
  --km-accent-dark: #1D4ED8;
  --km-accent-text: #FFFFFF;

  /* Semantic */
  --km-success: #10B981;
  --km-success-light: #D1FAE5;
  --km-error: #EF4444;
  --km-error-light: #FEE2E2;
  --km-warning: #F59E0B;
  --km-warning-light: #FEF3C7;
  --km-info: #0EA5E9;
  --km-info-light: #E0F2FE;

  /* Typography */
  --km-font: 'Noto Sans TC', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --km-font-mono: 'SF Mono', 'Fira Code', monospace;

  /* Spacing (8px grid) */
  --km-space-1: 4px;
  --km-space-2: 8px;
  --km-space-3: 12px;
  --km-space-4: 16px;
  --km-space-5: 20px;
  --km-space-6: 24px;
  --km-space-8: 32px;
  --km-space-10: 40px;
  --km-space-12: 48px;
  --km-space-16: 64px;

  /* Radius */
  --km-radius-sm: 8px;
  --km-radius-md: 12px;
  --km-radius-lg: 16px;
  --km-radius-xl: 24px;
  --km-radius-pill: 9999px;

  /* Shadows */
  --km-shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --km-shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --km-shadow-lg: 0 12px 32px rgba(0,0,0,0.12), 0 4px 8px rgba(0,0,0,0.06);
  --km-shadow-xl: 0 20px 48px rgba(0,0,0,0.16);

  /* Transitions */
  --km-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --km-duration-fast: 150ms;
  --km-duration-normal: 250ms;
  --km-duration-slow: 350ms;

  /* Touch targets */
  --km-touch-min: 56px;
  --km-touch-lg: 64px;

  /* Glass effect */
  --km-glass: rgba(255,255,255,0.85);
  --km-glass-blur: blur(20px);
  --km-glass-border: rgba(255,255,255,0.3);
}

/* ============================================
   THEME OVERRIDES (Light base)
   ============================================ */
[data-theme="tech-blue"] {
  --km-accent: #3B82F6;
  --km-accent-light: #DBEAFE;
  --km-accent-dark: #1D4ED8;
  --km-accent-contrast: #fff;
  --km-bg: #F0F4FF;
  --km-surface: #FFFFFF;
  --km-surface-hover: #F0F4FF;
  --km-border: #BFDBFE;
  --km-success: #10B981;
  --km-success-light: #D1FAE5;
}

[data-theme="temple-traditional"] {
  --km-accent: #B91C1C;
  --km-accent-light: #FFF0E0;
  --km-accent-dark: #7F1D1D;
  --km-accent-contrast: #fff;
  --km-bg: #FFFBF0;
  --km-surface: #FFFFFF;
  --km-surface-hover: #FFF8F0;
  --km-border: #E5D5B0;
  --km-success: #B45309;
  --km-success-light: #FEF3C7;
}

[data-theme="fresh-green"] {
  --km-accent: #059669;
  --km-accent-light: #ECFDF5;
  --km-accent-dark: #047857;
  --km-accent-contrast: #fff;
  --km-bg: #F0FDF4;
  --km-surface: #FFFFFF;
  --km-surface-hover: #F0FDF4;
  --km-border: #A7F3D0;
  --km-success: #059669;
  --km-success-light: #D1FAE5;
}

[data-theme="elegant-purple"] {
  --km-accent: #7C3AED;
  --km-accent-light: #EDE9FE;
  --km-accent-dark: #5B21B6;
  --km-accent-contrast: #fff;
  --km-bg: #FAF5FF;
  --km-surface: #FFFFFF;
  --km-surface-hover: #FAF5FF;
  --km-border: #C4B5FD;
  --km-success: #7C3AED;
  --km-success-light: #EDE9FE;
}

[data-theme="business-gray"] {
  --km-accent: #4B5563;
  --km-accent-light: #F3F4F6;
  --km-accent-dark: #1F2937;
  --km-accent-contrast: #fff;
  --km-bg: #F9FAFB;
  --km-surface: #FFFFFF;
  --km-surface-hover: #F3F4F6;
  --km-border: #D1D5DB;
  --km-success: #059669;
  --km-success-light: #D1FAE5;
}

/* ============================================
   RESET & BASE
   ============================================ */
.km-page {
  margin: 0;
  padding: 0;
  font-family: var(--km-font);
  background: var(--km-bg);
  color: var(--km-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  overflow-x: hidden;
}

.km-page *,
.km-page *::before,
.km-page *::after {
  box-sizing: border-box;
}

/* ============================================
   LAYOUT
   ============================================ */
.km-viewport {
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.km-header {
  flex: 0 0 auto;
  padding: var(--km-space-4) var(--km-space-6);
  background: var(--km-bg-secondary);
  border-bottom: 1px solid var(--km-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  z-index: 10;
}

.km-main {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
  scroll-behavior: smooth;
}

.km-footer {
  flex: 0 0 auto;
  padding: var(--km-space-4) var(--km-space-6);
  background: var(--km-glass);
  backdrop-filter: var(--km-glass-blur);
  -webkit-backdrop-filter: var(--km-glass-blur);
  border-top: 1px solid var(--km-border);
  z-index: 20;
}

/* ============================================
   PROGRESS BAR (Step indicator)
   ============================================ */
.km-progress {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--km-space-2);
  padding: var(--km-space-3) 0;
}

.km-progress-step {
  display: flex;
  align-items: center;
  gap: var(--km-space-2);
}

.km-progress-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  transition: all var(--km-duration-normal) var(--km-ease);
}

.km-progress-dot--active {
  background: var(--km-accent);
  color: var(--km-accent-text);
  box-shadow: 0 0 0 4px var(--km-accent-light);
}

.km-progress-dot--done {
  background: var(--km-success);
  color: white;
}

.km-progress-dot--pending {
  background: var(--km-surface-active);
  color: var(--km-text-tertiary);
}

.km-progress-line {
  width: 40px;
  height: 2px;
  background: var(--km-border);
  border-radius: 1px;
}

.km-progress-line--done {
  background: var(--km-success);
}

.km-progress-label {
  font-size: 12px;
  color: var(--km-text-secondary);
  margin-top: 4px;
  text-align: center;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
.km-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--km-text-primary);
}

.km-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
  color: var(--km-text-secondary);
  line-height: 1.5;
}

.km-price {
  font-family: 'Inter', var(--km-font);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--km-accent);
}

.km-price--lg {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

.km-price--md {
  font-size: clamp(1.2rem, 2.5vw, 1.75rem);
}

.km-price--sm {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
}

/* ============================================
   BUTTONS
   ============================================ */
.km-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--km-space-2);
  font-family: var(--km-font);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--km-duration-fast) var(--km-ease);
  white-space: nowrap;
  min-height: var(--km-touch-min);
  padding: var(--km-space-3) var(--km-space-6);
  border-radius: var(--km-radius-lg);
  font-size: clamp(1rem, 1.8vw, 1.125rem);
  position: relative;
  overflow: hidden;
}

.km-btn:active {
  transform: scale(0.97);
  transition-duration: 75ms;
}

.km-btn:focus-visible {
  outline: 3px solid var(--km-border-focus);
  outline-offset: 3px;
}

/* Primary */
.km-btn--primary {
  background: var(--km-accent);
  color: var(--km-accent-text);
  box-shadow: var(--km-shadow-md);
}

.km-btn--primary:hover {
  background: var(--km-accent-dark);
  box-shadow: var(--km-shadow-lg);
  transform: translateY(-1px);
}

/* Secondary */
.km-btn--secondary {
  background: var(--km-surface);
  color: var(--km-text-primary);
  border: 1.5px solid var(--km-border);
}

.km-btn--secondary:hover {
  background: var(--km-surface-hover);
  border-color: var(--km-text-tertiary);
}

/* Ghost */
.km-btn--ghost {
  background: transparent;
  color: var(--km-text-secondary);
}

.km-btn--ghost:hover {
  background: var(--km-surface-hover);
  color: var(--km-text-primary);
}

/* Large CTA */
.km-btn--cta {
  width: 100%;
  min-height: var(--km-touch-lg);
  font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  font-weight: 700;
  border-radius: var(--km-radius-xl);
  padding: var(--km-space-5) var(--km-space-8);
}

/* Pill */
.km-btn--pill {
  border-radius: var(--km-radius-pill);
  padding: var(--km-space-2) var(--km-space-5);
  min-height: 44px;
  font-size: 0.9rem;
}

/* Icon button (circle) */
.km-btn--icon {
  width: var(--km-touch-min);
  height: var(--km-touch-min);
  padding: 0;
  border-radius: 50%;
  font-size: 1.25rem;
}

/* ============================================
   CARDS
   ============================================ */
.km-card {
  background: var(--km-surface);
  border: 1px solid var(--km-border);
  border-radius: var(--km-radius-lg);
  overflow: hidden;
  transition: all var(--km-duration-normal) var(--km-ease);
}

.km-card:hover {
  box-shadow: var(--km-shadow-md);
  transform: translateY(-2px);
}

.km-card:active {
  transform: translateY(0) scale(0.98);
  transition-duration: 75ms;
}

.km-card__image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--km-surface-hover);
}

.km-card__body {
  padding: var(--km-space-4);
}

.km-card__name {
  font-size: clamp(0.95rem, 1.6vw, 1.125rem);
  font-weight: 600;
  color: var(--km-text-primary);
  line-height: 1.3;
  margin-bottom: var(--km-space-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.km-card__price {
  font-family: 'Inter', var(--km-font);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 800;
  color: var(--km-accent);
}

.km-card__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--km-space-3);
}

/* ============================================
   QUANTITY CONTROL
   ============================================ */
.km-qty {
  display: flex;
  align-items: center;
  gap: var(--km-space-3);
}

.km-qty__btn {
  width: var(--km-touch-min);
  height: var(--km-touch-min);
  border-radius: 50%;
  border: 1.5px solid var(--km-border);
  background: var(--km-surface);
  color: var(--km-text-primary);
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--km-duration-fast) var(--km-ease);
}

.km-qty__btn:hover {
  background: var(--km-accent-light);
  border-color: var(--km-accent);
  color: var(--km-accent);
}

.km-qty__btn:active {
  transform: scale(0.9);
}

.km-qty__btn--add {
  background: var(--km-accent);
  border-color: var(--km-accent);
  color: white;
}

.km-qty__btn--add:hover {
  background: var(--km-accent-dark);
}

.km-qty__value {
  font-size: 1.125rem;
  font-weight: 700;
  min-width: 28px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* ============================================
   CATEGORY TABS (Horizontal scrolling chips)
   ============================================ */
.km-tabs {
  display: flex;
  gap: var(--km-space-2);
  padding: var(--km-space-3) var(--km-space-6);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-snap-type: x proximity;
}

.km-tabs::-webkit-scrollbar {
  display: none;
}

.km-tab {
  flex: 0 0 auto;
  padding: var(--km-space-2) var(--km-space-5);
  border-radius: var(--km-radius-pill);
  font-size: clamp(0.875rem, 1.5vw, 1rem);
  font-weight: 600;
  color: var(--km-text-secondary);
  background: var(--km-surface);
  border: 1.5px solid var(--km-border);
  cursor: pointer;
  transition: all var(--km-duration-fast) var(--km-ease);
  white-space: nowrap;
  min-height: 44px;
  display: flex;
  align-items: center;
  scroll-snap-align: start;
}

.km-tab:hover {
  background: var(--km-surface-hover);
  border-color: var(--km-text-tertiary);
}

.km-tab--active {
  background: var(--km-accent);
  color: white;
  border-color: var(--km-accent);
}

.km-tab--active:hover {
  background: var(--km-accent-dark);
}

/* ============================================
   PRODUCT GRID
   ============================================ */
.km-grid {
  display: grid;
  gap: var(--km-space-4);
  padding: var(--km-space-4) var(--km-space-6);
}

/* Tablet: 2 columns */
.km-grid--products {
  grid-template-columns: repeat(2, 1fr);
}

/* Kiosk: 3 columns on larger screens */
@media (min-width: 900px) {
  .km-grid--products {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1400px) {
  .km-grid--products {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============================================
   CART BAR (Sticky bottom)
   ============================================ */
.km-cart-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--km-space-4);
  padding: var(--km-space-4) var(--km-space-6);
  background: var(--km-glass);
  backdrop-filter: var(--km-glass-blur);
  -webkit-backdrop-filter: var(--km-glass-blur);
  border-top: 1px solid var(--km-border);
  min-height: 80px;
}

.km-cart-bar__info {
  display: flex;
  align-items: center;
  gap: var(--km-space-3);
}

.km-cart-bar__badge {
  position: relative;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.km-cart-bar__count {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 22px;
  height: 22px;
  border-radius: 11px;
  background: var(--km-accent);
  color: white;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 6px;
}

.km-cart-bar__total {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.km-cart-bar__btn {
  min-width: 160px;
}

/* ============================================
   CART ITEM (In checkout)
   ============================================ */
.km-cart-item {
  display: flex;
  align-items: center;
  gap: var(--km-space-4);
  padding: var(--km-space-4);
  background: var(--km-surface);
  border: 1px solid var(--km-border);
  border-radius: var(--km-radius-lg);
  transition: all var(--km-duration-fast) var(--km-ease);
}

.km-cart-item__img {
  width: 72px;
  height: 72px;
  border-radius: var(--km-radius-md);
  object-fit: cover;
  background: var(--km-surface-hover);
  flex-shrink: 0;
}

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

.km-cart-item__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--km-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.km-cart-item__price {
  font-size: 0.875rem;
  color: var(--km-text-secondary);
  margin-top: 2px;
}

.km-cart-item__subtotal {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--km-accent);
  white-space: nowrap;
}

.km-cart-item__remove {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--km-error-light);
  color: var(--km-error);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--km-duration-fast) var(--km-ease);
}

.km-cart-item__remove:hover {
  background: var(--km-error);
  color: white;
}

/* ============================================
   PAYMENT METHOD CARDS
   ============================================ */
.km-pay-methods {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--km-space-4);
  padding: var(--km-space-6);
  max-width: 600px;
  margin: 0 auto;
}

.km-pay-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--km-space-4);
  padding: var(--km-space-8) var(--km-space-6);
  background: var(--km-surface);
  border: 2px solid var(--km-border);
  border-radius: var(--km-radius-xl);
  cursor: pointer;
  transition: all var(--km-duration-normal) var(--km-ease);
  min-height: 180px;
}

.km-pay-card:hover {
  border-color: var(--km-accent);
  box-shadow: var(--km-shadow-lg);
  transform: translateY(-4px);
}

.km-pay-card:active {
  transform: translateY(0) scale(0.97);
}

.km-pay-card__icon {
  font-size: 3rem;
  width: 80px;
  height: 80px;
  border-radius: var(--km-radius-lg);
  background: var(--km-accent-light);
  color: var(--km-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.km-pay-card__label {
  font-size: clamp(1.1rem, 2vw, 1.375rem);
  font-weight: 700;
  color: var(--km-text-primary);
}

/* ============================================
   RESULT PAGE
   ============================================ */
.km-result {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: var(--km-space-8);
  text-align: center;
}

.km-result__icon {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  margin-bottom: var(--km-space-6);
  animation: km-pop 0.5s var(--km-ease);
}

.km-result__icon--success {
  background: var(--km-success-light);
  color: var(--km-success);
}

.km-result__icon--error {
  background: var(--km-error-light);
  color: var(--km-error);
}

.km-result__icon--pending {
  background: var(--km-warning-light);
  color: var(--km-warning);
}

@keyframes km-pop {
  0% { transform: scale(0); opacity: 0; }
  60% { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}

.km-result__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: var(--km-space-2);
}

.km-result__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--km-text-secondary);
  margin-bottom: var(--km-space-6);
}

.km-result__countdown {
  font-size: 0.875rem;
  color: var(--km-text-tertiary);
  margin-top: var(--km-space-4);
}

/* Receipt style list */
.km-receipt {
  width: 100%;
  max-width: 400px;
  background: var(--km-surface);
  border-radius: var(--km-radius-lg);
  padding: var(--km-space-6);
  margin: var(--km-space-4) auto;
  text-align: left;
}

.km-receipt__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--km-space-2) 0;
  font-size: 0.9375rem;
}

.km-receipt__divider {
  border: none;
  border-top: 1px dashed var(--km-border);
  margin: var(--km-space-3) 0;
}

.km-receipt__total {
  font-size: 1.25rem;
  font-weight: 800;
}

/* ============================================
   WELCOME PAGE (Landing)
   ============================================ */
.km-welcome {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
}

.km-welcome__marquee {
  flex: 0 0 auto;
  background: var(--km-accent);
  color: white;
  padding: var(--km-space-2) 0;
  overflow: hidden;
  font-size: 0.875rem;
  font-weight: 500;
}

.km-welcome__marquee-inner {
  display: flex;
  width: max-content;
  animation: km-marquee 20s linear infinite;
  will-change: transform;
}

@keyframes km-marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.km-welcome__video {
  flex: 1 1 60%;
  position: relative;
  background: #000;
  overflow: hidden;
}

.km-welcome__video video,
.km-welcome__video iframe {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: none;
}

.km-welcome__cta {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--km-space-8) var(--km-space-6);
  background: var(--km-bg-secondary);
  gap: var(--km-space-4);
}

.km-welcome__logo {
  display: flex;
  align-items: center;
  gap: var(--km-space-3);
}

.km-welcome__logo img {
  width: 48px;
  height: 48px;
  border-radius: var(--km-radius-md);
}

.km-welcome__logo-text {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 800;
  color: var(--km-text-primary);
}

.km-welcome__start-btn {
  min-width: 280px;
  min-height: 72px;
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 800;
  border-radius: var(--km-radius-pill);
  background: var(--km-accent);
  color: white;
  border: none;
  cursor: pointer;
  box-shadow: var(--km-shadow-lg);
  transition: all var(--km-duration-normal) var(--km-ease);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--km-space-3);
}

.km-welcome__start-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--km-shadow-xl);
  background: var(--km-accent-dark);
}

.km-welcome__start-btn:active {
  transform: translateY(0) scale(0.97);
}

/* ============================================
   SUMMARY / TOTAL BAR
   ============================================ */
.km-summary {
  background: var(--km-surface);
  border-radius: var(--km-radius-lg);
  padding: var(--km-space-5);
  border: 1px solid var(--km-border);
}

.km-summary__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--km-space-2) 0;
}

.km-summary__label {
  color: var(--km-text-secondary);
  font-size: 0.9375rem;
}

.km-summary__value {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.km-summary__total {
  border-top: 2px solid var(--km-border);
  padding-top: var(--km-space-3);
  margin-top: var(--km-space-3);
}

.km-summary__total .km-summary__label {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--km-text-primary);
}

.km-summary__total .km-summary__value {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 800;
  color: var(--km-accent);
}

/* ============================================
   SEGMENTED CONTROL (Member options)
   ============================================ */
.km-segmented {
  display: flex;
  background: var(--km-surface-hover);
  border-radius: var(--km-radius-lg);
  padding: 4px;
  gap: 4px;
}

.km-segmented__item {
  flex: 1;
  text-align: center;
  padding: var(--km-space-3) var(--km-space-4);
  border-radius: var(--km-radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--km-text-secondary);
  cursor: pointer;
  transition: all var(--km-duration-fast) var(--km-ease);
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.km-segmented__item:hover {
  color: var(--km-text-primary);
}

.km-segmented__item--active {
  background: var(--km-surface);
  color: var(--km-accent);
  box-shadow: var(--km-shadow-sm);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes km-fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes km-slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

@keyframes km-shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

.km-animate-in {
  animation: km-fadeIn var(--km-duration-normal) var(--km-ease) both;
}

.km-animate-slide-up {
  animation: km-slideUp var(--km-duration-slow) var(--km-ease) both;
}

/* Staggered children animation */
.km-stagger > * {
  animation: km-fadeIn var(--km-duration-normal) var(--km-ease) both;
}

.km-stagger > *:nth-child(1) { animation-delay: 0ms; }
.km-stagger > *:nth-child(2) { animation-delay: 50ms; }
.km-stagger > *:nth-child(3) { animation-delay: 100ms; }
.km-stagger > *:nth-child(4) { animation-delay: 150ms; }
.km-stagger > *:nth-child(5) { animation-delay: 200ms; }
.km-stagger > *:nth-child(6) { animation-delay: 250ms; }
.km-stagger > *:nth-child(7) { animation-delay: 300ms; }
.km-stagger > *:nth-child(8) { animation-delay: 350ms; }
.km-stagger > *:nth-child(9) { animation-delay: 400ms; }

/* Added to cart feedback */
.km-card--added {
  border-color: var(--km-success) !important;
}

.km-card--added::after {
  content: '\2713';
  position: absolute;
  top: var(--km-space-3);
  right: var(--km-space-3);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--km-success);
  color: white;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: km-pop 0.3s var(--km-ease);
}

/* ============================================
   LOADING STATES
   ============================================ */
.km-skeleton {
  background: linear-gradient(90deg,
    var(--km-surface-hover) 25%,
    var(--km-surface-active) 50%,
    var(--km-surface-hover) 75%);
  background-size: 200% 100%;
  animation: km-shimmer 1.5s infinite;
  border-radius: var(--km-radius-md);
}

@keyframes km-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================
   EMPTY STATE
   ============================================ */
.km-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--km-space-16) var(--km-space-8);
  text-align: center;
  color: var(--km-text-tertiary);
}

.km-empty__icon {
  font-size: 4rem;
  margin-bottom: var(--km-space-4);
  opacity: 0.5;
}

.km-empty__text {
  font-size: 1.125rem;
  font-weight: 500;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  .km-page *,
  .km-page *::before,
  .km-page *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .km-welcome__marquee-inner {
    animation: none !important;
  }
}

@media (prefers-contrast: high) {
  :root {
    --km-bg: #FFFFFF;
    --km-surface: #FFFFFF;
    --km-border: #000000;
    --km-text-primary: #000000;
    --km-text-secondary: #333333;
    --km-shadow-sm: none;
    --km-shadow-md: none;
    --km-shadow-lg: none;
    --km-shadow-xl: none;
  }

  .km-btn--primary {
    border: 2px solid #000 !important;
  }

  .km-card {
    border-width: 2px;
    border-color: #000;
  }

  .km-tab--active {
    border: 2px solid #000;
  }
}

/* ============================================
   UTILITIES
   ============================================ */
.km-hidden { display: none !important; }
.km-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}
.km-text-center { text-align: center; }
.km-text-right { text-align: right; }
.km-flex { display: flex; }
.km-flex-col { flex-direction: column; }
.km-items-center { align-items: center; }
.km-justify-between { justify-content: space-between; }
.km-justify-center { justify-content: center; }
.km-gap-2 { gap: var(--km-space-2); }
.km-gap-4 { gap: var(--km-space-4); }
.km-gap-6 { gap: var(--km-space-6); }
.km-mt-4 { margin-top: var(--km-space-4); }
.km-mt-6 { margin-top: var(--km-space-6); }
.km-mb-4 { margin-bottom: var(--km-space-4); }
.km-mb-6 { margin-bottom: var(--km-space-6); }
.km-p-4 { padding: var(--km-space-4); }
.km-p-6 { padding: var(--km-space-6); }
.km-w-full { width: 100%; }