/**
 * Shared responsive layout — desktop web + mobile browsers
 * Link after page theme CSS (index inline / checkout-theme / styles)
 */

:root {
  --nav-h: 72px;
  --tab-h: 56px;
  --cart-bar-h: 52px;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  overflow-x: hidden;
  -webkit-tap-highlight-color: rgba(240, 123, 0, 0.15);
}

/* ── Tablet & mobile ── */
@media (max-width: 768px) {
  /* iOS: 16px inputs avoid auto-zoom on focus */
  input,
  select,
  textarea,
  .search-input,
  .form-input,
  .qty-input {
    font-size: 16px !important;
  }

  /* Touch-friendly controls */
  .step-btn,
  .view-btn,
  .btn-cart,
  .btn-admin,
  .btn-checkout,
  .btn,
  .tab-bar__item,
  .nav-actions a {
    min-height: 44px;
  }

  .tab-bar__item {
    -webkit-tap-highlight-color: transparent;
  }

  /* Bottom tab bar + optional cart bar stacking */
  body.has-tab-bar {
    padding-bottom: calc(var(--tab-h) + env(safe-area-inset-bottom, 0px));
  }

  body.has-tab-bar.has-cart-bar {
    padding-bottom: calc(var(--tab-h) + var(--cart-bar-h) + env(safe-area-inset-bottom, 0px));
  }

  body.has-tab-bar .total-bar--bot {
    bottom: calc(var(--tab-h) + env(safe-area-inset-bottom, 0px));
    z-index: 840;
    border-top: 2px solid var(--amber);
  }

  body.has-tab-bar .container {
    padding-bottom: calc(5rem + var(--tab-h));
  }

  body.has-tab-bar.has-cart-bar .container {
    padding-bottom: calc(5rem + var(--tab-h) + var(--cart-bar-h));
  }

  .total-bar-inner {
    padding: 0.5rem 1rem;
    gap: 0.5rem;
  }

  .total-bar-stat {
    font-size: 0.65rem;
  }

  .btn-checkout {
    padding: 0.55rem 1rem;
    font-size: 0.6rem;
  }

  /* Checkout page spacing */
  .checkout-theme .container,
  body.has-tab-bar .container.checkout-wrap {
    padding-bottom: calc(2rem + var(--tab-h));
  }

  .checkout-steps {
    gap: 0.35rem;
  }

  .step-pill {
    font-size: 0.55rem;
    padding: 0.45rem 0.7rem;
  }

  .btn-row {
    flex-direction: column;
  }

  .btn-row .btn {
    width: 100%;
    min-width: unset;
  }

  .pay-box {
    padding: 1rem;
  }

  .pay-qr {
    max-width: min(240px, 100%);
    height: auto;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    text-align: center;
  }

  .footer-links a {
    justify-content: center;
  }
}

/* ── Small phones ── */
@media (max-width: 520px) {
  :root {
    --nav-h: 64px;
  }

  .nav-inner {
    height: var(--nav-h);
    padding: 0 0.75rem;
    gap: 0.5rem;
  }

  .nav-brand img {
    width: 38px;
    height: 38px;
  }

  .nav-title-ta {
    display: none;
  }

  .nav-title-en {
    font-size: 0.72rem !important;
    letter-spacing: 0.03em;
  }

  .btn-admin {
    display: none;
  }

  .hero {
    margin-top: var(--nav-h);
  }

  .total-bar--top {
    top: var(--nav-h);
  }

  body.checkout-theme {
    padding-top: var(--nav-h);
  }

  .hero-img-wrap {
    height: clamp(260px, 58vw, 420px);
  }

  .hero-content {
    padding: 0 1rem;
  }

  .hero-chips {
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    min-width: unset;
    width: 100%;
  }

  .view-toggle {
    align-self: flex-start;
  }

  /* Product cards — card stack on phone */
  .product-card {
    flex-direction: column;
  }

  .product-img {
    width: 100% !important;
    min-width: unset !important;
    height: clamp(140px, 42vw, 180px) !important;
  }

  .product-body {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
  }

  .stepper {
    align-self: flex-start;
  }

  .subtotal {
    width: 100%;
    text-align: left;
  }

  .product-grid.view-grid {
    grid-template-columns: 1fr;
  }

  /* Cart table → stacked rows */
  .cart-table thead {
    display: none;
  }

  .cart-table,
  .cart-table tbody,
  .cart-table tr,
  .cart-table td {
    display: block;
    width: 100%;
  }

  .cart-table tbody tr {
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 0.75rem;
    padding: 0.65rem 0.85rem;
    background: var(--surface);
  }

  .cart-table tbody td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    padding: 0.4rem 0;
    border-bottom: none;
    text-align: right;
  }

  .cart-table tbody td.col-name {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    padding-bottom: 0.5rem;
    margin-bottom: 0.35rem;
    border-bottom: 1px solid var(--border);
  }

  .cart-table tbody td.col-name::before {
    display: none;
  }

  .cart-table tbody td:not(.col-name)::before {
    content: attr(data-label);
    font-family: var(--font-head);
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-3);
    flex-shrink: 0;
    text-align: left;
  }

  .panel {
    padding: 1rem;
  }

  .page-head {
    padding: 1rem;
  }

  .cart-grand {
    text-align: center;
    font-size: 0.95rem;
  }

  .cart-grand strong {
    display: block;
    margin-top: 0.25rem;
    margin-left: 0;
  }
}

/* ── Admin (mobile-friendly) ── */
@media (max-width: 768px) {
  .admin-nav-inner {
    flex-direction: column;
    padding: 0.75rem 1rem;
    gap: 0.5rem;
    height: auto;
  }

  .admin-nav-title {
    font-size: 0.85rem;
    text-align: center;
  }

  .admin-nav-links {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .admin-container {
    padding: 1rem 0.75rem 2rem;
  }

  .admin-card {
    padding: 1rem;
  }

  .admin-form-grid {
    grid-template-columns: 1fr !important;
  }

  .admin-product-item {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    gap: 0.75rem;
  }

  .admin-product-thumb {
    margin: 0 auto;
  }

  .admin-product-price {
    text-align: center;
  }

  .order-customer-info {
    grid-template-columns: 1fr !important;
  }

  .order-items-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 480px) {
  .login-card {
    margin: 1rem;
    padding: 1.25rem;
  }
}

/* ── Large screens (comfortable web app) ── */
@media (min-width: 1200px) {
  .container {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .product-grid.view-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
}