:root {
  --bg: #f6f6f6;
  --panel: #ffffff;
  --border: #dcdcdc;
  --text: #111111;
  --muted: #666666;
  --primary: #1f1f1f;
  --accent: #2f80ed;
  --danger: #d92d20;
  --success: #1f9d55;
  --shadow: 0 16px 36px rgba(0, 0, 0, 0.08);
  --radius: 18px;
  --font: 'Segoe UI', 'Noto Sans Thai', sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { background: var(--bg); color: var(--text); font-family: var(--font); }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; border: 0; border-radius: 14px; }

.pos-body { padding: 1.25rem; }
.topbar, .panel, .payment-fullscreen { background: var(--panel); border: 1px solid var(--border); box-shadow: var(--shadow); }
.topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1rem 1.25rem; border-radius: var(--radius); margin-bottom: 1rem;
}
.topbar-actions, .section-head, .cash-chip-row, .role-grid, .grid-2 { display: grid; gap: 0.75rem; }
.topbar-actions { grid-auto-flow: column; }
.eyebrow { margin: 0 0 0.25rem; color: var(--muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.12em; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: clamp(2rem, 4vw, 2.8rem); }
h2 { font-size: 1.35rem; }
.muted { color: var(--muted); }
.small { font-size: 0.92rem; }
.login-shell { min-height: calc(100vh - 2.5rem); display: grid; place-items: center; }
.login-panel { width: min(520px, 100%); padding: 1.5rem; display: grid; gap: 1rem; border-radius: 22px; }
.role-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.role-card {
  padding: 1rem; background: #fafafa; border: 1px solid var(--border); text-align: left;
  display: grid; gap: 0.4rem; border-radius: 16px;
}
.role-card.is-active { border-color: var(--text); background: #f0f0f0; }
.field { display: grid; gap: 0.45rem; }
.field span { color: var(--muted); font-size: 0.92rem; }
.field input {
  width: 100%; padding: 0.9rem 1rem; border: 1px solid var(--border); border-radius: 14px;
  background: #fff; color: var(--text);
}
.primary-button, .secondary-button, .ghost-button, .danger-button, .cash-chip {
  min-height: 3rem; padding: 0.85rem 1rem;
}
.primary-button { background: var(--primary); color: #fff; }
.secondary-button, .ghost-button, .cash-chip { background: #fff; border: 1px solid var(--border); color: var(--text); }
.danger-button { background: var(--danger); color: #fff; }
.full-width { width: 100%; }
.owner-layout, .staff-layout { display: grid; grid-template-columns: 1fr 420px; gap: 1rem; }
.owner-layout { grid-template-columns: 380px 1fr; }
.panel { border-radius: var(--radius); padding: 1.25rem; }
.product-list, .cart-list, .menu-grid { display: grid; gap: 0.75rem; }
.menu-grid { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
.product-card, .menu-card, .cart-row {
  border: 1px solid var(--border); border-radius: 16px; background: #fff; padding: 1rem;
}
.product-card, .menu-card { display: grid; gap: 0.5rem; }
.menu-card button { width: 100%; }
.cart-row { display: grid; grid-template-columns: 1fr auto auto; gap: 0.5rem; align-items: center; }
.qty-badge, .chip { display: inline-flex; align-items: center; justify-content: center; min-height: 2rem; padding: 0.35rem 0.8rem; border-radius: 999px; background: #f0f0f0; color: var(--text); }
.summary-box { display: grid; gap: 0.75rem; }
.square-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.square-summary > div { border: 1px solid var(--border); border-radius: 16px; padding: 1rem; background: #fafafa; }
.square-summary span { display: block; color: var(--muted); margin-bottom: 0.35rem; }
.square-summary strong { font-size: 1.15rem; }
.action-stack { display: grid; gap: 0.75rem; margin-top: 1rem; }
.danger-text { color: var(--danger); }
.cash-panel { margin-top: 1rem; display: grid; gap: 0.9rem; }
.cash-chip-row { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.payment-shell { min-height: calc(100vh - 2.5rem); }
.payment-fullscreen {
  min-height: calc(100vh - 2.5rem); border-radius: 24px; display: grid; place-items: center;
}
.payment-center { width: min(640px, 100%); text-align: center; display: grid; gap: 1rem; }
.payment-recipient { font-size: 1.1rem; }
.payment-qr-image { width: min(100%, 420px); margin: 0 auto; background: #fff; padding: 1rem; border-radius: 18px; border: 1px solid var(--border); }
.payment-empty { min-height: 420px; display: grid; place-items: center; border: 1px dashed var(--border); border-radius: 18px; color: var(--muted); }
.payment-cancel-button { width: min(360px, 100%); margin: 0 auto; }
.qr-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  padding: 1.25rem;
  background: rgba(246, 246, 246, 0.96);
  display: grid;
  place-items: center;
}
.qr-overlay-panel {
  width: min(760px, 100%);
  min-height: calc(100vh - 2.5rem);
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 24px;
  padding: 1.5rem;
  display: grid;
  align-content: center;
  gap: 1rem;
  text-align: center;
}
.qr-overlay-head {
  display: grid;
  gap: 0.5rem;
}
.hidden { display: none !important; }

.swal2-popup {
  border-radius: 22px !important;
  font-family: var(--font) !important;
}

.swal2-confirm {
  background: var(--primary) !important;
}

.swal2-cancel {
  background: #ffffff !important;
  color: var(--text) !important;
  border: 1px solid var(--border) !important;
}

@media (max-width: 980px) {
  .owner-layout, .staff-layout, .role-grid, .grid-2, .square-summary, .cash-chip-row, .topbar { grid-template-columns: 1fr; }
  .topbar, .topbar-actions { grid-auto-flow: row; }
  .payment-fullscreen { min-height: calc(100vh - 1rem); }
}