/* ================================================
   Tea & Coffee Shop POS — Redesigned UI
   ================================================ */

:root {
  --cream: #faf6f0;
  --cream-mid: #f0e9de;
  --cream-dark: #e2d8cb;
  --brown: #3d2b1f;
  --brown-mid: #5c3d2e;
  --brown-light: #8b6655;
  --accent: #c8853a;
  --accent-light: #e8a85a;
  --sage: #7a9170;
  --white: #ffffff;
  --red: #c0392b;
  --shadow-sm: 0 1px 4px rgba(61,43,31,0.08);
  --shadow-md: 0 4px 16px rgba(61,43,31,0.12);
  --shadow-lg: 0 12px 40px rgba(61,43,31,0.18);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Sarabun', sans-serif;
  background: var(--cream);
  color: var(--brown);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 1440px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ================================================ HEADER */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
  background: var(--white);
  border-bottom: 1.5px solid var(--cream-dark);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
}

.logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--brown);
}

.header-right { display: flex; align-items: center; gap: 1rem; }

.header-info { display: flex; align-items: center; gap: 0.75rem; }

.date-text { font-size: 0.85rem; color: var(--brown-light); }

.order-chip {
  background: var(--cream-mid);
  color: var(--brown-mid);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--cream-dark);
}

.admin-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--cream-mid);
  border: 1.5px solid var(--cream-dark);
  text-decoration: none;
  font-size: 1rem;
  transition: background var(--transition), border-color var(--transition);
}
.admin-btn:hover { background: var(--cream-dark); border-color: var(--brown-light); }

/* ================================================ MAIN GRID */
.main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 360px;
  overflow: hidden;
  height: calc(100vh - 57px);
}

/* ================================================ PRODUCTS */
.products-section {
  padding: 1.25rem 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.options-bar {
  background: var(--white);
  border: 1.5px solid var(--cream-dark);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
}

.options-group { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }

.options-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--brown-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  min-width: 42px;
}

.pill-group { display: flex; gap: 0.35rem; flex-wrap: wrap; }

.pill-btn {
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--cream-dark);
  background: var(--cream);
  color: var(--brown-mid);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.pill-btn:hover { border-color: var(--brown-light); color: var(--brown); }
.pill-btn.active {
  background: var(--brown);
  border-color: var(--brown);
  color: var(--white);
  box-shadow: 0 2px 8px rgba(61,43,31,0.2);
}

.categories { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.category-btn {
  padding: 0.5rem 1.1rem;
  border: 1.5px solid var(--cream-dark);
  background: var(--white);
  color: var(--brown-light);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition);
}
.category-btn:hover { border-color: var(--accent-light); color: var(--brown); }
.category-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
  box-shadow: 0 2px 10px rgba(200,133,58,0.3);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.75rem;
}

.product-card {
  background: var(--white);
  border: 1.5px solid var(--cream-dark);
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  animation: cardIn 0.22s ease both;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.product-card:hover {
  border-color: var(--accent-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.product-card:active { transform: translateY(-1px) scale(0.98); }

.product-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
  background: var(--cream-mid);
}

.product-name {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--brown);
  padding: 0.5rem 0.5rem 0.1rem;
  line-height: 1.25;
}

.product-price {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 600;
  padding: 0 0.5rem 0.6rem;
}

/* ================================================ CART */
.cart-section {
  background: var(--white);
  border-left: 1.5px solid var(--cream-dark);
  display: flex;
  flex-direction: column;
  box-shadow: -4px 0 20px rgba(61,43,31,0.06);
}

.cart-header {
  padding: 1rem 1.25rem 0.85rem;
  border-bottom: 1.5px solid var(--cream-dark);
}

.cart-title-row { display: flex; align-items: center; justify-content: space-between; }

.cart-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--brown);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cart-badge {
  background: var(--accent);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  min-width: 20px;
  height: 20px;
  border-radius: var(--radius-pill);
  padding: 0 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  animation: badgePop 0.25s cubic-bezier(0.34,1.56,0.64,1) both;
}

@keyframes badgePop {
  from { transform: scale(0.5); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.cart-items {
  flex: 1;
  overflow-y: auto;
  list-style: none;
  padding: 0.75rem 1rem;
  min-height: 0;
}

.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 2.5rem 1rem;
  color: var(--brown-light);
  font-size: 0.9rem;
}

.cart-empty-icon { font-size: 2rem; opacity: 0.4; }

.cart-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--cream-dark);
  font-size: 0.88rem;
  animation: itemIn 0.18s ease both;
}

@keyframes itemIn {
  from { opacity: 0; transform: translateX(6px); }
  to   { opacity: 1; transform: translateX(0); }
}

.cart-item:last-child { border-bottom: none; }

.cart-item-img {
  width: 42px; height: 42px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  background: var(--cream-mid);
}

.cart-item-img-placeholder {
  width: 42px; height: 42px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--cream-mid);
}

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

.cart-item-name {
  font-weight: 600;
  color: var(--brown);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cart-item-meta { font-size: 0.75rem; color: var(--brown-light); margin-top: 1px; }

.cart-item-price { font-size: 0.82rem; color: var(--accent); font-weight: 500; margin-top: 1px; }

.cart-item-qty { display: flex; align-items: center; gap: 0.2rem; flex-shrink: 0; }

.qty-btn {
  width: 26px; height: 26px;
  border: 1.5px solid var(--cream-dark);
  background: var(--cream);
  color: var(--brown);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  font-weight: 600;
}
.qty-btn:hover { background: var(--cream-dark); border-color: var(--brown-light); }

.qty-num {
  min-width: 22px;
  text-align: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--brown);
}

.cart-footer {
  padding: 1rem 1.25rem;
  border-top: 1.5px solid var(--cream-dark);
  background: var(--cream);
  flex-shrink: 0;
}

.totals { margin-bottom: 0.85rem; }

.total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--brown);
}

.total-amount { font-size: 1.25rem; color: var(--accent); }

.cart-actions { display: flex; gap: 0.5rem; }

/* ================================================ BUTTONS */
.btn {
  padding: 0.7rem 1.1rem;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
}

.btn-primary {
  flex: 1;
  background: var(--brown);
  color: var(--white);
  box-shadow: 0 2px 8px rgba(61,43,31,0.2);
}
.btn-primary:hover {
  background: var(--brown-mid);
  box-shadow: 0 4px 12px rgba(61,43,31,0.25);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: transparent;
  color: var(--brown-light);
  border: 1.5px solid var(--cream-dark);
}
.btn-ghost:hover { border-color: var(--red); color: var(--red); background: #fff5f5; }

/* ================================================ MODALS */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(30,15,5,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  backdrop-filter: blur(3px);
}

.modal[aria-hidden="false"] { opacity: 1; visibility: visible; }

.modal[aria-hidden="false"] .modal-content {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.modal-content {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.5rem;
  max-width: 400px;
  width: 92%;
  box-shadow: var(--shadow-lg);
  transform: translateY(14px) scale(0.97);
  opacity: 0;
  transition: transform 0.28s cubic-bezier(0.34,1.3,0.64,1), opacity 0.2s ease;
}

.modal-title { font-size: 1.1rem; font-weight: 700; color: var(--brown); margin-bottom: 1rem; }

.modal-actions { display: flex; gap: 0.5rem; margin-top: 1.25rem; }
.modal-actions .btn { flex: 1; }

.confirm-order-list {
  border-top: 1.5px solid var(--cream-dark);
  border-bottom: 1.5px solid var(--cream-dark);
  padding: 0.75rem 0;
  max-height: 220px;
  overflow-y: auto;
  margin-bottom: 0.5rem;
}

.confirm-order-item {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0;
  font-size: 0.92rem;
  color: var(--brown);
}

.confirm-total {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 1rem;
  color: var(--brown);
  padding: 0.4rem 0;
}

/* ================================================ RECEIPT (screen) */
.receipt-modal-content { max-width: 340px; }

.receipt {
  font-family: 'Sarabun', sans-serif;
  font-size: 0.88rem;
  color: var(--brown);
}

.receipt-header { text-align: center; margin-bottom: 0.5rem; }

.receipt-shop {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--brown);
  margin-bottom: 0.25rem;
}

.receipt-order { font-weight: 600; font-size: 0.9rem; }
.receipt-date { font-size: 0.8rem; color: var(--brown-light); }

.receipt-divider {
  color: var(--cream-dark);
  font-size: 0.72rem;
  margin: 0.5rem 0;
  overflow: hidden;
}

.receipt-item {
  display: flex;
  justify-content: space-between;
  padding: 0.22rem 0;
  font-size: 0.88rem;
}

.receipt-total-row {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.25rem 0;
  margin-top: 0.25rem;
}

.receipt-footer {
  text-align: center;
  color: var(--brown-light);
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

/* ================================================ PRINT — thermal 80mm */
@media print {
  @page {
    size: 80mm auto;
    margin: 3mm 4mm;
  }

  body * { visibility: hidden; }

  #receiptContent,
  #receiptContent * { visibility: visible; }

  #receiptContent {
    position: fixed;
    top: 0;
    left: 0;
    width: 72mm;
    font-family: 'Courier New', monospace;
    font-size: 10.5pt;
    color: #000;
    background: #fff;
  }

  .receipt-shop {
    font-family: serif;
    font-size: 13pt;
    font-weight: bold;
    display: block;
  }

  .receipt-divider {
    display: block;
    border-top: 1px dashed #000;
    font-size: 0;
    height: 0;
    color: transparent;
    margin: 5pt 0;
  }

  .no-print, .modal-actions { display: none !important; }
}

/* ================================================ CART BACKDROP (mobile) */
.cart-backdrop {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(30, 15, 5, 0.6);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  /* ไม่ transition — JS control ผ่าน rAF */
}

/* ================================================ DESKTOP: cart กลับมาเป็น sidebar */
@media (min-width: 901px) {
  .main {
    display: grid;
    grid-template-columns: 1fr 360px;
    overflow: hidden;
    height: calc(100vh - 57px);
  }
 
  .cart-section {
    position: static !important;
    transform: none !important;
    height: auto !important;
    border-radius: 0 !important;
    border-top: none !important;
    border-left: 1.5px solid var(--cream-dark);
    box-shadow: -4px 0 20px rgba(61,43,31,0.06) !important;
    will-change: auto !important;
  }
 
  .cart-header {
    cursor: default !important;
    touch-action: auto !important;
    user-select: auto !important;
  }
 
  .cart-header::before {
    display: none !important;
  }
 
  .cart-backdrop {
    display: none !important;
  }
 
  .products-section {
    padding: 1.25rem 1.5rem !important;
    padding-bottom: 1.25rem !important;
  }
}

/* ================================================ MOBILE */
@media (max-width: 900px) {
  .main { display: block; height: auto; overflow: visible; }

  .products-section { padding: 1rem; padding-bottom: 80px; }

  .cart-section {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: 72dvh;
    height: 72vh;
    z-index: 100;
    border-radius: 18px 18px 0 0;
    border-top: 1.5px solid var(--cream-dark);
    box-shadow: 0 -8px 32px rgba(61,43,31,0.15);
    /* transform ถูก set โดย JS */
    will-change: transform;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    display: flex;
    flex-direction: column;
  }

  /* .cart-section.open ไม่ต้อง override transform — JS จัดการ */

  .cart-header {
    cursor: grab;
    touch-action: none;
    user-select: none;
  }
  .cart-header:active { cursor: grabbing; }

  .cart-header::before {
    content: "";
    display: block;
    width: 36px; height: 4px;
    background: var(--cream-dark);
    border-radius: var(--radius-pill);
    margin: 0 auto 10px;
    transition: width 0.2s, background 0.2s;
  }
  .cart-header:active::before {
    width: 48px;
    background: var(--brown-light);
  }

  .cart-items { overflow-y: auto; -webkit-overflow-scrolling: touch; }
  .cart-footer { flex-shrink: 0; }

  .products-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }

  .date-text { display: none; }

  .options-bar { gap: 0.5rem; padding: 0.75rem; }
}