:root {
  --bg: #0f172a;
  --panel: #111827;
  --surface: #1f2937;
  --accent: #22c55e;
  --accent-strong: #16a34a;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: #1f2937;
  --danger: #ef4444;
  --shadow: 0 14px 32px rgba(0, 0, 0, 0.28);
  --radius: 18px;
  --header-height: 88px;
}

[data-theme="light"] {
  --bg: #f8fafc;
  --panel: #ffffff;
  --surface: #f1f5f9;
  --accent: #22c55e;
  --accent-strong: #16a34a;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --danger: #dc2626;
  --shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

[hidden] {
  display: none !important;
}

h1, h2, h3, h4, h5 {
  margin: 0;
}

.kiosk-header {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

[data-theme="light"] .kiosk-header {
  background: rgba(255, 255, 255, 0.9);
}

.title-block h1 {
  font-size: 26px;
  letter-spacing: 0.5px;
}

.subtitle {
  margin-top: 4px;
  color: var(--muted);
  font-size: 14px;
}

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

.toggle-group {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.toggle-btn {
  border: none;
  background: transparent;
  color: var(--text);
  padding: 10px 16px;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.toggle-btn[aria-pressed="true"] {
  background: var(--accent);
  color: #0f172a;
  font-weight: 700;
}

.icon-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 18px;
  transition: transform 0.1s ease, background 0.2s ease;
}

.icon-btn:hover,
.toggle-btn:hover {
  transform: translateY(-1px);
}

.kiosk-shell {
  display: grid;
  grid-template-columns: 260px 1fr 380px;
  gap: 16px;
  padding: 16px 16px 90px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-header {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel h2 {
  font-size: 18px;
}

.category-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  padding: 16px;
}

.category-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 14px 12px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
  text-align: left;
}

.category-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #0f172a;
  transform: translateY(-1px);
}

.items-panel {
  min-height: 60vh;
}

.item-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
  padding: 16px;
}

.item-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 10px;
  min-height: 190px;
}

.item-card h3 {
  font-size: 17px;
}

.item-card p {
  color: var(--muted);
  margin: 0;
  font-size: 14px;
  line-height: 1.4;
}

.price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.primary-btn,
.secondary-btn,
.ghost-btn {
  border: none;
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s ease, background 0.2s ease, color 0.2s ease;
}

.primary-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #0f172a;
  box-shadow: 0 12px 24px rgba(34, 197, 94, 0.25);
}

.primary-btn:disabled {
  background: var(--border);
  color: var(--muted);
  box-shadow: none;
  cursor: not-allowed;
}

.secondary-btn {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.ghost-btn {
  background: transparent;
  color: var(--danger);
}

.primary-btn:not(:disabled):hover,
.secondary-btn:hover,
.ghost-btn:hover {
  transform: translateY(-1px);
}

.order-items {
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  overflow-y: auto;
}

.empty-state {
  color: var(--muted);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
}

.order-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.order-card .name {
  font-weight: 700;
}

.order-card .controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.qty-btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  width: 32px;
  height: 32px;
  border-radius: 10px;
  font-size: 18px;
  cursor: pointer;
}

.order-type-pill {
  background: var(--surface);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
  font-size: 14px;
}

.totals {
  border-top: 1px solid var(--border);
  padding: 12px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.totals .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 15px;
}

.total-row {
  font-size: 18px;
  font-weight: 800;
}

.chip {
  background: var(--surface);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 13px;
  border: 1px solid var(--border);
}

.checkout-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--panel);
  border-top: 1px solid var(--border);
  box-shadow: 0 -10px 24px rgba(0, 0, 0, 0.18);
  z-index: 12;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 20;
}

.modal {
  background: var(--panel);
  border-radius: 18px;
  width: min(720px, 100%);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.modal-content {
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
}

.confirmation {
  text-align: center;
  padding: 24px 12px;
}

.confirmation .order-number {
  font-size: 36px;
  letter-spacing: 3px;
  margin: 10px 0;
}

@media (max-width: 1200px) {
  .kiosk-shell {
    grid-template-columns: 230px 1fr 340px;
  }
}

@media (max-width: 992px) {
  .kiosk-shell {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "categories order"
      "items items";
  }
  .categories-panel { grid-area: categories; }
  .items-panel { grid-area: items; }
  .order-panel { grid-area: order; }
}

@media (max-width: 768px) {
  .kiosk-shell {
    grid-template-columns: 1fr;
    padding-bottom: 120px;
  }
  .kiosk-header {
    position: sticky;
  }
  .checkout-bar {
    display: flex;
  }
  .order-panel .primary-btn {
    display: none;
  }
  .panel {
    border-radius: 16px;
  }
}

@media (max-width: 520px) {
  .toggle-btn {
    padding: 8px 12px;
    font-size: 14px;
  }
  .title-block h1 {
    font-size: 22px;
  }
  .item-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
}