/**
 * MegaStoreVn POS — UI Design System (glassmorphism, light-only)
 * @see .claude/UI_DESIGN_SYSTEM.md
 * Scoped to .megastorevn-pos-terminal
 */

.megastorevn-pos-terminal {
  --ms-accent-blue: #2563eb;
  --ms-accent-blue-hover: #1d4ed8;
  --ms-accent-blue-soft: rgba(37, 99, 235, 0.14);
  --ms-accent-green: #059669;
  --ms-accent-green-soft: rgba(5, 150, 105, 0.14);
  --ms-accent-purple: #7c3aed;
  --ms-text: #0f172a;
  --ms-text-muted: #475569;
  --ms-glass-surface: rgba(255, 255, 255, 0.72);
  --ms-glass-surface-strong: rgba(255, 255, 255, 0.88);
  --ms-glass-border: rgba(255, 255, 255, 0.65);
  --ms-glass-blur: 16px;
  --ms-shadow: 0 8px 32px rgba(15, 23, 42, 0.07);
  --ms-shadow-sm: 0 2px 12px rgba(15, 23, 42, 0.06);
  --ms-radius: 16px;
  --ms-radius-sm: 12px;

  /* Override legacy POS tokens */
  --tw-fop-primary: var(--ms-accent-blue);
  --tw-fop-primary-dark: var(--ms-accent-blue-hover);
  --tw-fop-primary-bg: var(--ms-accent-blue-soft);
  --tw-fop-surface: var(--ms-glass-surface-strong);
  --tw-fop-bg: transparent;
  --tw-fop-text: var(--ms-text);
  --tw-fop-text-muted: var(--ms-text-muted);
  --tw-fop-border: rgba(148, 163, 184, 0.35);
  --tw-fop-radius: var(--ms-radius);
  --tw-fop-radius-sm: var(--ms-radius-sm);
  --tw-fop-shadow: var(--ms-shadow-sm);
  --tw-fop-shadow-lg: var(--ms-shadow);
}

/* Page canvas */
.megastorevn-pos-terminal.tw-fop-wrap {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ms-text);
  background: linear-gradient(145deg, #eef4ff 0%, #f5f0ff 42%, #f0f9ff 100%);
  min-height: 100%;
}

body.megastorevn-pos-fullpage {
  background: linear-gradient(145deg, #eef4ff 0%, #f5f0ff 42%, #f0f9ff 100%) !important;
}

/* WP Admin → POS Terminal */
.megastorevn-pos-admin .megastorevn-pos-terminal.tw-fop-wrap {
  margin-top: 12px;
  border-radius: var(--ms-radius);
  overflow: hidden;
}

/* 3-column shell */
.megastorevn-pos-terminal .ms-pos-app {
  gap: 12px;
  padding: 12px;
  max-width: 1480px;
  background: transparent;
  min-height: calc(100vh - 24px);
  min-height: calc(100dvh - 24px);
}

/* Glass panels */
.megastorevn-pos-terminal .ms-pos-nav,
.megastorevn-pos-terminal .ms-pos-main,
.megastorevn-pos-terminal .ms-pos-app .tw-fop-sidebar {
  background: var(--ms-glass-surface);
  backdrop-filter: blur(var(--ms-glass-blur));
  -webkit-backdrop-filter: blur(var(--ms-glass-blur));
  border: 1px solid var(--ms-glass-border);
  box-shadow: var(--ms-shadow);
  border-radius: var(--ms-radius);
}

.megastorevn-pos-terminal .ms-pos-nav {
  border-right: none;
  margin: 0;
}

.megastorevn-pos-terminal .ms-pos-main {
  max-height: none;
  height: calc(100vh - 24px);
  height: calc(100dvh - 24px);
}

.megastorevn-pos-terminal .ms-pos-app .tw-fop-sidebar {
  border-left: none;
  top: 0;
  height: calc(100vh - 24px);
  height: calc(100dvh - 24px);
  overflow: hidden;
}

/* Nav */
.megastorevn-pos-terminal .ms-pos-nav__search {
  border-bottom: 1px solid var(--tw-fop-border);
  padding: 16px 14px 12px;
}

.megastorevn-pos-terminal .ms-pos-nav__search input {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--tw-fop-border);
  color: var(--ms-text);
  border-radius: var(--ms-radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.megastorevn-pos-terminal .ms-pos-nav__search input:focus {
  outline: none;
  border-color: var(--ms-accent-blue);
  box-shadow: 0 0 0 3px var(--ms-accent-blue-soft);
}

.megastorevn-pos-terminal .ms-pos-nav__item.is-active {
  background: var(--ms-accent-blue-soft);
  color: var(--ms-accent-blue);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.12);
}

.megastorevn-pos-terminal .ms-pos-nav__item:hover:not(.is-active) {
  background: rgba(255, 255, 255, 0.55);
}

/* Category headers */
.megastorevn-pos-terminal .tw-fop-category-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ms-text);
  letter-spacing: -0.02em;
}

.megastorevn-pos-terminal .tw-fop-category-count {
  font-weight: 500;
}

/* Product cards — glass */
.megastorevn-pos-terminal .ms-pos-main .tw-fop-card {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--ms-glass-border);
  box-shadow: var(--ms-shadow-sm);
  border-radius: var(--ms-radius-sm);
}

.megastorevn-pos-terminal .ms-pos-main .tw-fop-card:hover {
  box-shadow: var(--ms-shadow);
  transform: translateY(-3px);
}

.megastorevn-pos-terminal .ms-pos-main .tw-fop-card__name {
  font-weight: 600;
  color: var(--ms-text);
}

.megastorevn-pos-terminal .ms-pos-main .tw-fop-card__price {
  color: var(--ms-accent-blue);
  font-weight: 700;
}

.megastorevn-pos-terminal .ms-pos-main .tw-fop-card__add-btn {
  background: linear-gradient(135deg, var(--ms-accent-blue) 0%, #3b82f6 100%);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.megastorevn-pos-terminal .ms-pos-main .tw-fop-card__add-btn:hover {
  background: linear-gradient(135deg, var(--ms-accent-blue-hover) 0%, var(--ms-accent-blue) 100%);
}

.megastorevn-pos-terminal .ms-pos-main .tw-fop-card__add-count {
  background: var(--ms-accent-purple);
  color: #fff;
}

.megastorevn-pos-terminal .tw-fop-empty-state {
  background: var(--ms-glass-surface);
  backdrop-filter: blur(var(--ms-glass-blur));
  border: 1px dashed var(--tw-fop-border);
  border-radius: var(--ms-radius);
  padding: 48px 24px;
  text-align: center;
  color: var(--ms-text-muted);
}

/* Sidebar */
.megastorevn-pos-terminal .tw-fop-sidebar__title {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.megastorevn-pos-terminal .tw-fop-mode-toggle {
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--tw-fop-border);
  margin: 16px 14px 0;
}

.megastorevn-pos-terminal .tw-fop-mode-toggle__slider {
  background: var(--ms-glass-surface-strong);
  box-shadow: var(--ms-shadow-sm);
}

.megastorevn-pos-terminal .tw-fop-mode-btn.is-active {
  color: var(--ms-accent-blue);
}

.megastorevn-pos-terminal .tw-fop-cart-item {
  border-bottom-color: var(--tw-fop-border);
}

.megastorevn-pos-terminal .tw-fop-cart-item__name {
  color: var(--ms-text);
}

.megastorevn-pos-terminal .ms-pos-cart-item__actions {
  margin-top: 8px;
}

.megastorevn-pos-terminal .tw-fop-qty-ctrl {
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--tw-fop-border);
}

.megastorevn-pos-terminal .tw-fop-cart-notice--warning {
  background: rgba(254, 243, 199, 0.85);
  color: #92400e;
}

.megastorevn-pos-terminal .tw-fop-cart-notice--success {
  background: var(--ms-accent-green-soft);
  color: #047857;
}

.megastorevn-pos-terminal .tw-fop-cart-notice--info {
  background: var(--ms-accent-blue-soft);
  color: #1e40af;
}

.megastorevn-pos-terminal .tw-fop-checkout-btn {
  background: linear-gradient(135deg, var(--ms-accent-blue) 0%, #3b82f6 100%);
  border-radius: var(--ms-radius-sm);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

.megastorevn-pos-terminal .tw-fop-checkout-btn:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--ms-accent-blue-hover) 0%, var(--ms-accent-blue) 100%);
}

.megastorevn-pos-terminal .tw-fop-sidebar__footer {
  border-top: 1px solid var(--tw-fop-border);
  background: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
}

/* Modal — light glass */
.megastorevn-pos-terminal .tw-fop-modal-overlay {
  background: rgba(241, 245, 249, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.megastorevn-pos-terminal .tw-fop-modal {
  background: var(--ms-glass-surface-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--ms-glass-border);
  box-shadow: var(--ms-shadow);
  border-radius: var(--ms-radius) var(--ms-radius) 0 0;
}

.megastorevn-pos-terminal .tw-fop-input {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--tw-fop-border);
  color: var(--ms-text);
}

.megastorevn-pos-terminal .tw-fop-input:focus {
  border-color: var(--ms-accent-blue);
  box-shadow: 0 0 0 3px var(--ms-accent-blue-soft);
}

.megastorevn-pos-terminal .tw-fop-btn-primary {
  background: linear-gradient(135deg, var(--ms-accent-blue) 0%, #3b82f6 100%);
  border-radius: var(--ms-radius-sm);
  font-weight: 600;
}

.megastorevn-pos-terminal .tw-fop-order-summary {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--tw-fop-border);
  border-radius: var(--ms-radius-sm);
  padding: 14px;
}

.megastorevn-pos-terminal .ms-pos-field-error {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: #dc2626;
  font-weight: 500;
}

.megastorevn-pos-terminal .ms-pos-summary-list {
  margin: 12px 0;
  padding: 0;
  list-style: none;
}

.megastorevn-pos-terminal .ms-pos-summary-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--tw-fop-border);
}

.megastorevn-pos-terminal .ms-pos-summary-list li:last-child {
  border-bottom: none;
}

/* Multi-customer sessions */
.megastorevn-pos-terminal .ms-pos-sessions {
  padding: 12px 12px 8px;
  border-bottom: 1px solid var(--tw-fop-border);
}

.megastorevn-pos-terminal .ms-pos-sessions__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.megastorevn-pos-terminal .ms-pos-sessions__title {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--ms-text);
  letter-spacing: 0.01em;
}

.megastorevn-pos-terminal .ms-pos-sessions__add {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ms-accent-blue);
  background: var(--ms-accent-blue-soft);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s;
}

.megastorevn-pos-terminal .ms-pos-sessions__add:hover:not(:disabled) {
  background: rgba(37, 99, 235, 0.22);
}

.megastorevn-pos-terminal .ms-pos-sessions__add:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.megastorevn-pos-terminal .ms-pos-sessions__tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.megastorevn-pos-terminal .ms-pos-sessions__tabs::-webkit-scrollbar {
  height: 4px;
}

.megastorevn-pos-terminal .ms-pos-session-tab {
  display: flex;
  align-items: stretch;
  flex-shrink: 0;
  border-radius: var(--ms-radius-sm);
  border: 1px solid var(--tw-fop-border);
  background: rgba(255, 255, 255, 0.55);
  overflow: hidden;
}

.megastorevn-pos-terminal .ms-pos-session-tab.is-active {
  border-color: var(--ms-accent-blue);
  background: var(--ms-accent-blue-soft);
  box-shadow: 0 0 0 1px var(--ms-accent-blue-soft);
}

.megastorevn-pos-terminal .ms-pos-session-tab__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: none;
  background: transparent;
  font-size: 12px;
  font-weight: 600;
  color: var(--ms-text);
  cursor: pointer;
  max-width: 140px;
}

.megastorevn-pos-terminal .ms-pos-session-tab__label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.megastorevn-pos-terminal .ms-pos-session-tab__badge {
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  font-size: 11px;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
  color: #fff;
  background: var(--ms-accent-blue);
  border-radius: 999px;
}

.megastorevn-pos-terminal .ms-pos-session-tab__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  padding: 0;
  border: none;
  border-left: 1px solid var(--tw-fop-border);
  background: transparent;
  color: var(--ms-text-muted);
  cursor: pointer;
}

.megastorevn-pos-terminal .ms-pos-session-tab__close:hover {
  color: #dc2626;
  background: rgba(220, 38, 38, 0.08);
}

.megastorevn-pos-terminal .ms-pos-modal-guest {
  display: block;
  margin-top: 2px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ms-text-muted);
}

/* Toast — light glass (no dark surface) */
.megastorevn-pos-terminal .megastorevn-pos-notice {
  background: var(--ms-glass-surface-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--ms-text);
  border: 1px solid var(--ms-glass-border);
  border-left: 4px solid var(--ms-accent-blue);
  box-shadow: var(--ms-shadow);
}

.megastorevn-pos-terminal .megastorevn-pos-notice__close {
  background: var(--ms-accent-blue-soft);
  color: var(--ms-accent-blue);
}

.megastorevn-pos-terminal .megastorevn-pos-notice__close:hover {
  background: rgba(37, 99, 235, 0.22);
}

@media (max-width: 1100px) {
  .megastorevn-pos-terminal .ms-pos-app {
    grid-template-columns: 200px minmax(0, 1fr) 300px;
    padding: 8px;
  }
}

@media (max-width: 900px) {
  .megastorevn-pos-terminal .ms-pos-app {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .megastorevn-pos-terminal .ms-pos-nav,
  .megastorevn-pos-terminal .ms-pos-main,
  .megastorevn-pos-terminal .ms-pos-app .tw-fop-sidebar {
    height: auto;
    max-height: none;
    position: relative;
  }

  .megastorevn-pos-terminal .ms-pos-main .tw-fop-product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}