/* =========================================================================
   STYLE.CSS — Premium QR Restaurant Menu
   Sections: Variables, Reset, Layout, Header, Search, Categories, Cards,
             Popup, Checkout, Toast, Animations, Responsive, Utilities
   ========================================================================= */

/* ---------------------------------------------------------------------
   1. VARIABLES
   --------------------------------------------------------------------- */
:root {
  --color-primary: #E53935;
  --color-primary-dark: #C62828;
  --color-bg: #FFF8F2;
  --color-surface: #FFFFFF;
  --color-text: #222222;
  --color-text-secondary: #777777;
  --color-border: #EFE7E1;
  --color-success: #2E7D32;
  --color-warning: #F9A825;
  --color-error: #C62828;

  --shadow-soft: 0 4px 20px rgba(34, 34, 34, 0.06);
  --shadow-medium: 0 8px 30px rgba(34, 34, 34, 0.10);
  --shadow-strong: 0 16px 40px rgba(34, 34, 34, 0.16);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --font-display: 'Poppins', sans-serif;
  --header-height: 64px;
  --transition-fast: 0.18s ease;
  --transition-medium: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --z-header: 30;
  --z-categories: 20;
  --z-orderbar: 40;
  --z-overlay: 50;
  --z-toast: 60;
}

/* ---------------------------------------------------------------------
   2. RESET
   --------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  padding: 0;
  margin: 0;
  height: 100%;
}

body {
  font-family: var(--font-display);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  padding-bottom: 90px;
}

img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; margin: 0; padding: 0; }

::-webkit-scrollbar { width: 0; height: 0; }

.material-symbols-rounded {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
  user-select: none;
}

/* ---------------------------------------------------------------------
   3. LAYOUT
   --------------------------------------------------------------------- */
.app {
  max-width: 720px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--color-bg);
  position: relative;
}

.container { padding: 0 16px; }

/* ---------------------------------------------------------------------
   4. HEADER
   --------------------------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(255, 248, 242, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 16px;
}

.header-top {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  box-shadow: var(--shadow-soft);
  background: var(--color-surface);
}

.header-info { flex: 1; min-width: 0; }

.header-name {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-tagline {
  font-size: 12px;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
}

.badge-rating {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: #FFF3E0;
  color: #B26A00;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

.badge-rating .material-symbols-rounded { font-size: 13px; }

.badge-status {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

.badge-status.open { background: #E8F5E9; color: var(--color-success); }
.badge-status.closed { background: #FDECEA; color: var(--color-error); }

.header-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.icon-btn:active { transform: scale(0.92); }
.icon-btn .material-symbols-rounded { font-size: 20px; color: var(--color-text); }

/* ---------------------------------------------------------------------
   5. SEARCH
   --------------------------------------------------------------------- */
.search-wrap {
  position: sticky;
  top: var(--header-height);
  z-index: var(--z-categories);
  background: var(--color-bg);
  padding: 10px 16px 6px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 10px 16px;
  box-shadow: var(--shadow-soft);
}

.search-box .material-symbols-rounded { color: var(--color-text-secondary); font-size: 20px; }

.search-box input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 14px;
  color: var(--color-text);
}

.search-box input::placeholder { color: var(--color-text-secondary); }

.search-clear {
  display: none;
  border: none;
  background: none;
  padding: 0;
}

.search-clear.visible { display: flex; }

/* ---------------------------------------------------------------------
   6. CATEGORIES
   --------------------------------------------------------------------- */
.categories-wrap {
  position: sticky;
  top: calc(var(--header-height) + 56px);
  z-index: var(--z-categories);
  background: var(--color-bg);
  padding: 6px 0 12px;
  border-bottom: 1px solid transparent;
}

.categories-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 16px;
  scroll-behavior: smooth;
}

.category-pill {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.category-pill .material-symbols-rounded { font-size: 18px; }

.category-pill.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(229, 57, 53, 0.28);
}

/* ---------------------------------------------------------------------
   7. MENU GRID / CARDS
   --------------------------------------------------------------------- */
.section-title {
  font-size: 15px;
  font-weight: 600;
  margin: 18px 16px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding: 0 16px 16px;
}

.food-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  animation: cardIn 0.35s ease both;
}

.food-card:active { transform: scale(0.98); }

.food-card-media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--color-border);
  overflow: hidden;
}

.food-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.food-card-body {
  padding: 10px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.veg-indicator {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-success);
  border-radius: 4px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.veg-indicator.non-veg { border-color: var(--color-primary); }

.veg-indicator::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
}

.veg-indicator.non-veg::after { background: var(--color-primary); }

.badge-popular {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(34, 34, 34, 0.75);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(4px);
}

.food-card-name {
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.food-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 4px;
}

.food-card-price {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.btn-add {
  background: var(--color-surface);
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 12px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-soft);
}

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

.btn-add.in-cart {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: #fff;
  padding: 4px 8px;
}

.btn-add.in-cart button {
  background: none;
  border: none;
  color: #fff;
  display: flex;
  padding: 2px;
}

.btn-add.in-cart .material-symbols-rounded { font-size: 16px; }

.out-of-stock-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------------------------------------------------------------------
   8. OVERLAY / BOTTOM SHEETS (Popup + Checkout share this base)
   --------------------------------------------------------------------- */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(34, 34, 34, 0.45);
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-medium);
}

.overlay.visible { opacity: 1; pointer-events: auto; }

.sheet {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translate(-50%, 100%);
  width: 100%;
  max-width: 720px;
  max-height: 88vh;
  background: var(--color-surface);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: var(--shadow-strong);
  z-index: var(--z-overlay);
  transition: transform var(--transition-medium);
  overflow-y: auto;
  padding-bottom: env(safe-area-inset-bottom, 16px);
}

.sheet.visible { transform: translate(-50%, 0); }

.sheet-handle {
  width: 40px;
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-pill);
  margin: 10px auto;
}

.sheet-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------------------------------------------------------------------
   9. FOOD POPUP
   --------------------------------------------------------------------- */
.popup-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--color-border);
}

.popup-content { padding: 18px 20px 24px; }

.popup-title-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  justify-content: space-between;
}

.popup-name { font-size: 19px; font-weight: 700; }

.popup-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.popup-meta span { display: flex; align-items: center; gap: 4px; }
.popup-meta .material-symbols-rounded { font-size: 15px; }

.popup-description {
  font-size: 13.5px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-top: 12px;
}

.popup-price {
  font-size: 20px;
  font-weight: 700;
  margin-top: 14px;
}

.qty-stepper {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 16px;
  background: var(--color-bg);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  width: fit-content;
}

.qty-stepper button {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: none;
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

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

.field-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin: 18px 0 6px;
  display: block;
}

.field-textarea, .field-input {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 13.5px;
  background: var(--color-bg);
  outline: none;
  transition: border-color var(--transition-fast);
}

.field-textarea:focus, .field-input:focus { border-color: var(--color-primary); }
.field-textarea { resize: none; min-height: 64px; }

.field-error { color: var(--color-error); font-size: 11.5px; margin-top: 4px; display: none; }
.field-error.visible { display: block; }

.btn-primary {
  width: 100%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 15px;
  font-size: 14.5px;
  font-weight: 700;
  margin-top: 20px;
  box-shadow: 0 10px 24px rgba(229, 57, 53, 0.3);
  transition: transform var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary:active { transform: scale(0.97); }
.btn-primary:disabled { opacity: 0.5; box-shadow: none; }

/* ---------------------------------------------------------------------
   10. FLOATING ORDER BAR
   --------------------------------------------------------------------- */
.order-bar {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translate(-50%, 120%);
  width: calc(100% - 32px);
  max-width: 688px;
  background: rgba(34, 34, 34, 0.92);
  backdrop-filter: blur(10px);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-strong);
  z-index: var(--z-orderbar);
  transition: transform var(--transition-medium);
}

.order-bar.visible { transform: translate(-50%, 0); }

.order-bar-info { display: flex; flex-direction: column; gap: 2px; }
.order-bar-count { font-size: 11px; opacity: 0.75; }
.order-bar-total { font-size: 15px; font-weight: 700; }

.order-bar-cta {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 13px;
}

/* ---------------------------------------------------------------------
   11. CHECKOUT
   --------------------------------------------------------------------- */
.order-list { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }

.order-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 10px;
}

.order-row img { width: 48px; height: 48px; border-radius: 8px; object-fit: cover; }
.order-row-info { flex: 1; min-width: 0; }
.order-row-name { font-size: 13px; font-weight: 600; }
.order-row-price { font-size: 12px; color: var(--color-text-secondary); }

.order-row-qty {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  border-radius: var(--radius-pill);
  padding: 4px 8px;
  box-shadow: var(--shadow-soft);
}

.order-row-qty button { border: none; background: none; color: var(--color-primary); display: flex; }
.order-row-remove { border: none; background: none; color: var(--color-text-secondary); display: flex; }

.summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 6px 0;
}

.summary-row.total {
  color: var(--color-text);
  font-weight: 700;
  font-size: 15px;
  border-top: 1px dashed var(--color-border);
  margin-top: 6px;
  padding-top: 12px;
}

/* ---------------------------------------------------------------------
   12. TOAST
   --------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: calc(100% - 32px);
  max-width: 420px;
  align-items: center;
}

.toast {
  background: var(--color-text);
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-medium);
  animation: toastIn 0.28s ease, toastOut 0.28s ease 2.4s forwards;
}

.toast.success { background: var(--color-success); }
.toast.warning { background: var(--color-warning); color: #3a2a00; }
.toast.error { background: var(--color-error); }
.toast .material-symbols-rounded { font-size: 18px; }

/* ---------------------------------------------------------------------
   13. LOADING / SKELETON
   --------------------------------------------------------------------- */
.skeleton-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.skeleton-block {
  background: linear-gradient(90deg, #F1EBE4 25%, #F8F3EE 37%, #F1EBE4 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s ease infinite;
}

.skeleton-card .skeleton-block.media { aspect-ratio: 4/3; }
.skeleton-card .skeleton-text { height: 34px; margin: 10px 12px; border-radius: 6px; }

.page-loader {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  transition: opacity var(--transition-medium), visibility var(--transition-medium);
}

.page-loader.hidden { opacity: 0; visibility: hidden; }

.loader-ring {
  width: 42px;
  height: 42px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ---------------------------------------------------------------------
   14. EMPTY STATE
   --------------------------------------------------------------------- */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--color-text-secondary);
}

.empty-state .material-symbols-rounded {
  font-size: 56px;
  color: var(--color-border);
  margin-bottom: 10px;
}

.empty-state-title { font-size: 15px; font-weight: 600; color: var(--color-text); }
.empty-state-text { font-size: 13px; margin-top: 4px; }

/* ---------------------------------------------------------------------
   15. ANIMATIONS
   --------------------------------------------------------------------- */
@keyframes cardIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(-12px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
  to { opacity: 0; transform: translateY(-12px) scale(0.95); }
}

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

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------------------------------------------------------------------
   16. RESPONSIVE
   --------------------------------------------------------------------- */
@media (min-width: 600px) {
  .menu-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 900px) {
  .app { max-width: 900px; }
  .menu-grid { grid-template-columns: repeat(4, 1fr); }
  .sheet { max-width: 480px; border-radius: var(--radius-lg); bottom: 50%; transform: translate(-50%, 50%) scale(0.96); opacity: 0; }
  .sheet.visible { transform: translate(-50%, 50%) scale(1); opacity: 1; }
}

/* ---------------------------------------------------------------------
   16b. DINE-IN BANNER + ORDER TRACKING (V2)
   --------------------------------------------------------------------- */
.dinein-banner {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 10px 16px 0;
  background: #FFF3E0;
  color: #B26A00;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 12.5px;
  font-weight: 500;
}

.dinein-banner .material-symbols-rounded { font-size: 18px; }

.order-type-switch {
  display: flex;
  gap: 8px;
  margin: 10px 16px 0;
}

.order-type-pill {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.order-type-pill .material-symbols-rounded { font-size: 18px; }

.order-type-pill.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(229, 57, 53, 0.24);
}

.kds-dot-label { font-size: 22px; color: var(--color-border); line-height: 1; transition: color var(--transition-fast); }
.kds-dot-label.active { color: var(--color-primary); }

#upiPayBtn { background: #2E7D32; box-shadow: 0 10px 24px rgba(46,125,50,0.28); margin-top: 18px; }
#trackDoneBtn { margin-top: 10px; }

/* ---------------------------------------------------------------------
   17. UTILITIES
   --------------------------------------------------------------------- */
.hidden { display: none !important; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.text-secondary { color: var(--color-text-secondary); }
.mt-0 { margin-top: 0; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}