/* ==========================================================================
   Interactive demo — styled to look like the REAL KOTMate app (green
   accent, dense colorful cards, CLAUDE.md §9 language), not the marketing
   site's teal brand. Tokens are the hex equivalents of the app's own
   frontend/src/styles/globals.css HSL custom properties.
   ========================================================================== */

:root {
  --background: #f1f5f0;
  --foreground: #172621;
  --border: #d7ded3;
  --accent: #1f7a59;
  --accent-foreground: #ffffff;
  --gold: #c2850a;
  --chili: #ab332b;
  --surface: #ffffff;
  --surface-2: #e7ede3;
  --surface-3: #d8e0d2;
  --ink-soft: #4c675e;
  --ink-faint: #819890;
  --veg: #317233;
  --accent-soft: #def2e9;
  --gold-soft: #f9efd7;
  --chili-soft: #f7e5e3;
  --radius: 10px;
  --font-display: "Plus Jakarta Sans", "Segoe UI", system-ui, sans-serif;
  --font-body: "Work Sans", "Segoe UI", system-ui, sans-serif;
  --shadow-md: 0 8px 24px rgba(23, 38, 33, 0.1), 0 2px 6px rgba(23, 38, 33, 0.06);
  --shadow-lg: 0 20px 44px rgba(23, 38, 33, 0.18);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; }
img { max-width: 100%; height: auto; display: block; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Demo banner ---------- */
.demo-banner {
  background: var(--foreground);
  color: #fff;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 20px;
  padding: 10px 16px;
  font-size: 0.85rem;
  text-align: center;
}
.demo-banner strong { color: var(--gold); }
.demo-banner__actions { display: flex; align-items: center; gap: 14px; }
.demo-banner__link { color: rgba(255,255,255,0.75); text-decoration: none; font-weight: 600; }
.demo-banner__link:hover { color: #fff; }
.demo-banner__cta {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-family: var(--font-display);
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
}
.demo-banner__cta:hover { background: #185f45; }

/* ---------- App shell ---------- */
.app {
  display: flex;
  height: calc(100vh - 41px);
  min-height: 560px;
}
.rail {
  width: 84px;
  flex-shrink: 0;
  background: var(--surface-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 14px 8px;
  gap: 6px;
}
.rail-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 4px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 0.72rem;
  font-weight: 700;
  font-family: var(--font-display);
  position: relative;
}
.rail-btn .icon { font-size: 1.3rem; }
.rail-btn.is-active {
  background: var(--surface);
  border-color: var(--border);
  color: var(--accent);
  box-shadow: var(--shadow-md);
}
.rail-btn__badge {
  position: absolute;
  top: 4px;
  right: 12px;
  background: var(--chili);
  color: #fff;
  font-size: 0.62rem;
  min-width: 16px;
  height: 16px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
}

.area {
  flex: 1;
  overflow-y: auto;
  min-width: 0;
}
.area[hidden] { display: none; }

/* ---------- Screen header (used by every screen) ---------- */
.screen-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.screen-header h1 { font-family: var(--font-display); font-size: 1.15rem; margin: 0; }
.screen-header p { margin: 0; color: var(--ink-faint); font-size: 0.85rem; }
.back-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--ink-soft);
  flex-shrink: 0;
}
.back-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Order type screen ---------- */
.order-type-body { padding: 24px; }
.order-type-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.chip {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  padding: 11px 22px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
}
.chip--dine.is-selected { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip--nonseating.is-selected { background: var(--veg); border-color: var(--veg); color: #fff; }
.chip:not(.is-selected):hover { border-color: var(--accent); }

.section-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 20px 0 10px;
}
.table-grid { display: flex; flex-wrap: wrap; gap: 12px; }
.table-tile {
  width: 92px; height: 92px;
  border-radius: var(--radius);
  border: 1.5px solid var(--border);
  background: var(--surface);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px;
  cursor: pointer;
  position: relative;
  font-family: var(--font-display);
}
.table-tile:hover { border-color: var(--accent); }
.table-tile.is-busy { background: var(--gold-soft); border-color: var(--gold); }
.table-tile__num { font-size: 1.3rem; font-weight: 800; color: var(--foreground); }
.table-tile__seats { font-size: 0.7rem; color: var(--ink-faint); font-weight: 600; }
.table-tile__badge {
  position: absolute; top: -8px; right: -8px;
  background: var(--gold);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 800;
  min-width: 22px; height: 22px;
  border-radius: 999px;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--background);
}

/* ---------- Item + cart screen ---------- */
.item-cart-body { display: flex; height: calc(100% - 69px); min-height: 0; }
.item-cart-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.customer-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.customer-bar__label { font-size: 0.75rem; color: var(--ink-faint); font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; margin-right: 4px; }
.customer-chip {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 5px 13px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
}
.customer-chip.is-selected { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }

.cat-nav {
  display: flex; gap: 8px; overflow-x: auto;
  padding: 10px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.cat-btn {
  flex-shrink: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--ink-soft);
  cursor: pointer;
  white-space: nowrap;
}
.cat-btn.is-selected { background: var(--accent); border-color: var(--accent); color: #fff; }

.item-grid {
  flex: 1; overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  gap: 12px;
  padding: 16px;
  align-content: start;
}
.item-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  padding: 0;
  position: relative;
  transition: box-shadow 0.15s, transform 0.15s;
}
.item-card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.item-card__img { height: 58px; }
.item-card__body { padding: 8px 10px 10px; }
.item-card__code { font-size: 0.68rem; color: var(--ink-faint); font-weight: 700; }
.item-card__name { font-family: var(--font-display); font-weight: 700; font-size: 0.88rem; line-height: 1.2; margin: 2px 0 0; }
.item-card__ta { font-size: 0.72rem; color: var(--ink-faint); margin: 1px 0 4px; }
.item-card__price { font-family: var(--font-display); font-weight: 800; font-size: 0.9rem; color: var(--foreground); }
.item-card__qty {
  position: absolute; top: 6px; right: 6px;
  background: var(--accent); color: #fff;
  font-size: 0.7rem; font-weight: 800;
  min-width: 20px; height: 20px; border-radius: 999px;
  display: flex; align-items: center; justify-content: center;
  padding: 0 4px;
}

.cart-panel {
  width: 320px; flex-shrink: 0;
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex; flex-direction: column;
}
.cart-header { padding: 14px 16px 8px; display: flex; justify-content: space-between; align-items: baseline; }
.cart-header h2 { font-family: var(--font-display); font-size: 1rem; margin: 0; }
.cart-header span { font-size: 0.78rem; color: var(--ink-faint); }
.cart-items { flex: 1; overflow-y: auto; padding: 0 16px; }
.cart-line { padding: 10px 0; border-bottom: 1px solid var(--border); }
.cart-line__top { display: flex; justify-content: space-between; gap: 8px; }
.cart-line__name { font-family: var(--font-display); font-weight: 700; font-size: 0.9rem; }
.cart-line__ta { font-size: 0.72rem; color: var(--ink-faint); }
.cart-line__amount { font-family: var(--font-display); font-weight: 700; font-size: 0.9rem; white-space: nowrap; }
.cart-line__meta { display: flex; align-items: center; justify-content: space-between; margin-top: 6px; }
.cart-line__sent { font-size: 0.68rem; font-weight: 700; color: var(--accent); background: var(--accent-soft); padding: 2px 8px; border-radius: 999px; }
.qty-stepper { display: flex; align-items: center; gap: 8px; }
.qty-stepper button {
  width: 24px; height: 24px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--surface-2);
  cursor: pointer; font-weight: 800; color: var(--ink-soft);
}
.qty-stepper span { font-weight: 700; min-width: 16px; text-align: center; }
.cart-empty { color: var(--ink-faint); text-align: center; padding: 40px 16px; font-size: 0.9rem; }

.cart-summary { padding: 12px 16px; border-top: 1px solid var(--border); background: var(--surface-2); }
.cart-summary__row { display: flex; justify-content: space-between; font-size: 0.85rem; padding: 2px 0; color: var(--ink-soft); }
.cart-summary__row.total { font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; color: var(--foreground); padding-top: 6px; }
.cart-actions { padding: 12px 16px 16px; display: flex; flex-direction: column; gap: 8px; }
.btn-demo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  padding: 11px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--foreground);
  cursor: pointer;
}
.btn-demo:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-demo--gold { background: var(--gold-soft); border-color: var(--gold); color: #8a5f07; }
.btn-demo--accent { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-demo--accent:hover:not(:disabled) { background: #185f45; }

/* ---------- KOT tickets screen ---------- */
.kot-body { padding: 16px 24px; display: grid; gap: 12px; max-width: 640px; }
.ticket-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.ticket-card__top { display: flex; justify-content: space-between; align-items: center; }
.ticket-card__label { font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; }
.ticket-card__tag { font-size: 0.72rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); margin-left: 8px; }
.ticket-card__status { font-size: 0.78rem; font-weight: 700; color: var(--ink-faint); }
.ticket-card__id { font-size: 0.75rem; color: var(--ink-faint); margin: 2px 0 8px; }
.ticket-card__items { font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 10px; }
.ticket-card__items div { display: flex; justify-content: space-between; padding: 2px 0; }
.ticket-empty { color: var(--ink-faint); text-align: center; padding: 60px 16px; }

/* ---------- Fast Billing screen ---------- */
.fast-body { display: flex; height: calc(100% - 69px); }
.fast-main { flex: 1; display: flex; flex-direction: column; align-items: center; padding: 24px; overflow-y: auto; }
.fast-hint { color: var(--ink-faint); font-size: 0.88rem; margin: 0 0 20px; text-align: center; max-width: 40ch; }
.fast-fields { width: 100%; max-width: 380px; display: grid; gap: 10px; margin-bottom: 18px; }
.fast-field {
  display: flex; align-items: center; gap: 10px;
  border: 1.5px solid var(--border); border-radius: var(--radius);
  padding: 12px 14px; background: var(--surface);
  font-family: var(--font-display); font-weight: 700;
}
.fast-field.is-active { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.fast-field__label { font-size: 0.7rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em; width: 56px; flex-shrink: 0; }
.fast-field__value { flex: 1; font-size: 1.05rem; }
.fast-chips { display: flex; gap: 8px; margin-bottom: 14px; }
.keypad { display: grid; grid-template-columns: repeat(3, 74px); gap: 8px; margin-bottom: 16px; }
.keypad button {
  height: 52px; border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--surface-2); font-family: var(--font-display); font-weight: 800; font-size: 1.1rem;
  cursor: pointer; color: var(--foreground);
}
.keypad button:hover { border-color: var(--accent); }
.keypad button.clear { color: var(--chili); }
.fast-controls { display: flex; gap: 10px; width: 100%; max-width: 380px; margin-bottom: 10px; }
.fast-done { width: 100%; max-width: 380px; }

.fast-side {
  width: 260px; flex-shrink: 0;
  border-left: 1px solid var(--border);
  background: var(--surface);
  padding: 16px;
  overflow-y: auto;
}
.fast-side h3 { font-family: var(--font-display); font-size: 0.88rem; margin: 0 0 10px; }
.fast-search {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 10px; font-size: 0.85rem;
}
.fast-side-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 6px; border-radius: 6px; cursor: pointer; font-size: 0.85rem;
}
.fast-side-row:hover { background: var(--surface-2); }
.fast-side-row span:first-child { color: var(--ink-soft); }
.fast-side-row span:last-child { font-weight: 700; }
.fast-cart-preview { width: 100%; max-width: 380px; margin-bottom: 16px; }
.fast-cart-preview .cart-line { padding: 8px 0; }

/* ---------- Bill modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(15, 30, 26, 0.55);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; padding: 20px;
}
.modal-backdrop[hidden] { display: none; }
.bill-modal {
  background: var(--surface);
  border-radius: 14px;
  width: 100%; max-width: 380px;
  max-height: 90vh; overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.bill-receipt { padding: 24px 22px; font-family: "Courier New", monospace; }
.bill-receipt__hotel { text-align: center; font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; }
.bill-receipt__addr { text-align: center; font-size: 0.78rem; color: var(--ink-faint); margin-bottom: 12px; }
.bill-receipt hr { border: none; border-top: 1px dashed var(--border); margin: 10px 0; }
.bill-receipt__meta { display: flex; justify-content: space-between; font-size: 0.82rem; margin-bottom: 2px; }
.bill-receipt__line { display: flex; justify-content: space-between; font-size: 0.85rem; padding: 2px 0; }
.bill-receipt__total { display: flex; justify-content: space-between; font-weight: 800; font-size: 1.05rem; margin-top: 6px; }
.bill-receipt__thanks { text-align: center; margin-top: 14px; font-size: 0.85rem; color: var(--ink-soft); }
.bill-receipt__qr {
  width: 84px; height: 84px; margin: 10px auto; border-radius: 6px;
  background:
    repeating-linear-gradient(0deg, #000 0 3px, transparent 3px 6px),
    repeating-linear-gradient(90deg, #000 0 3px, transparent 3px 6px);
  background-blend-mode: multiply;
  opacity: 0.85;
}
.bill-modal__actions { padding: 0 22px 22px; display: flex; gap: 10px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--foreground); color: #fff;
  padding: 12px 20px; border-radius: 999px;
  font-family: var(--font-display); font-weight: 700; font-size: 0.88rem;
  box-shadow: var(--shadow-lg);
  z-index: 200;
}
.toast[hidden] { display: none; }

/* ---------- Reset FAB ---------- */
.reset-fab {
  position: fixed; bottom: 20px; right: 20px; z-index: 60;
  font-family: var(--font-display); font-weight: 700; font-size: 0.82rem;
  padding: 10px 16px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--ink-soft); cursor: pointer;
  box-shadow: var(--shadow-md);
}
.reset-fab:hover { border-color: var(--chili); color: var(--chili); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .app { flex-direction: column; height: auto; min-height: calc(100vh - 41px); }
  .rail { width: auto; flex-direction: row; justify-content: center; border-right: none; border-bottom: 1px solid var(--border); }
  .rail-btn { flex-direction: row; padding: 8px 14px; }
  .item-cart-body { flex-direction: column; height: auto; }
  .cart-panel { width: auto; border-left: none; border-top: 1px solid var(--border); }
  .item-grid { max-height: 50vh; }
  .fast-body { flex-direction: column; height: auto; }
  .fast-side { width: auto; border-left: none; border-top: 1px solid var(--border); }
}