/* ============================================================
   Pro Nutrition Thailand — Stock Checker Styles
   3-layer layout: Brands → Products → Detail
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@1,400&family=Montserrat:wght@400;500;600&display=swap');

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

:root {
  --black:    #1c1c1c;
  --off:      #f5f3ef;
  --green:    #25D366;
  --grab:     #00B14F;
  --border:   #e0ddd8;
  --bg:       #f8f7f4;
  --muted:    #888;
  --radius:   8px;
}

body {
  font-family: 'Montserrat', sans-serif;
  background: var(--bg);
  color: var(--black);
  min-height: 100vh;
  overscroll-behavior: none;
}

/* ── Header ─────────────────────────────────────────────── */

.site-header {
  background: var(--black);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 60;
}

.header-logo {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.header-logo img {
  height: 56px;
  width: auto;
  display: block;
  max-width: 260px;
  object-fit: contain;
}
.logo-pro       { font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: 20px; color: var(--off); }
.logo-nutrition { font-weight: 600; font-size: 20px; color: var(--off); letter-spacing: -0.5px; }
.logo-dot       { font-weight: 600; font-size: 20px; color: var(--off); }

.grab-btn {
  background: var(--off);
  color: var(--black);
  border: none;
  border-radius: 20px;
  padding: 7px 14px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'Montserrat', sans-serif;
  white-space: nowrap;
  transition: background 0.15s;
}
.grab-btn:hover { background: #e8e6e0; }

/* ── Loader ──────────────────────────────────────────────── */

#loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  gap: 14px;
}
.spinner {
  width: 28px; height: 28px;
  border: 2px solid var(--border);
  border-top-color: var(--black);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-msg { font-size: 11px; color: var(--muted); letter-spacing: 1px; text-transform: uppercase; }

#error-state {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 2rem;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

/* ── Live bar ─────────────────────────────────────────────── */

.live-bar {
  background: #252525;
  padding: 5px 1.25rem;
  display: flex;
  align-items: center;
  gap: 7px;
}
.live-dot  { width: 5px; height: 5px; background: var(--green); border-radius: 50%; flex-shrink: 0; }
.live-text { font-size: 10px; color: #555; letter-spacing: 1.5px; text-transform: uppercase; flex: 1; }
.refresh-btn {
  background: transparent; border: none; cursor: pointer;
  color: #555; padding: 2px; display: flex; align-items: center;
  transition: color 0.15s;
}
.refresh-btn:hover { color: #aaa; }
.refresh-btn.spinning svg { animation: spin 0.8s linear infinite; }

/* ── Category strip ──────────────────────────────────────── */

.cat-strip {
  background: #fff;
  border-bottom: 0.5px solid var(--border);
  padding: 8px 1.25rem 0;
}
.cat-strip-label {
  font-size: 9px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 7px;
}
.cat-chips {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 10px;
}
.cat-chips::-webkit-scrollbar { display: none; }
.cat-chip {
  background: transparent;
  border: 0.5px solid var(--border);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
  font-family: 'Montserrat', sans-serif;
  transition: all 0.15s;
  flex-shrink: 0;
}
.cat-chip.active { background: var(--black); color: var(--off); border-color: var(--black); }

/* ── Search ───────────────────────────────────────────────── */

.search-bar { padding: 0.85rem 1.25rem; background: #fff; border-bottom: 0.5px solid var(--border); }
.search-input {
  width: 100%;
  padding: 9px 14px;
  border: 0.5px solid var(--border);
  border-radius: 24px;
  font-size: 13px;
  background: var(--bg);
  color: var(--black);
  outline: none;
  font-family: 'Montserrat', sans-serif;
}
.search-input:focus { border-color: #aaa; }

/* ── Layer 1: Brand grid ─────────────────────────────────── */

.brand-grid {
  padding: 1rem 1.25rem 5rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 10px;
}

.brand-grid.search-mode {
  display: block;
  padding: 0;
}

.brand-card {
  background: #fff;
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s;
  display: flex;
  flex-direction: column;
}
.brand-card:hover  { border-color: #aaa; }
.brand-card:active { transform: scale(0.97); }

.brand-card-img {
  width: 100%;
  aspect-ratio: 1;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.brand-card-img img {
  width: 100%; height: 100%; object-fit: cover;
}
.brand-card-img .brand-initials {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  padding: 4px;
}
.brand-card-footer {
  padding: 7px 8px;
  border-top: 0.5px solid var(--border);
}
.brand-card-name {
  font-size: 10px;
  font-weight: 600;
  color: var(--black);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand-card-count {
  font-size: 9px;
  color: var(--muted);
  margin-top: 1px;
}

.search-results-wrap { padding: 0 0 5rem; background: #fff; }
.search-results-label { padding: 0.75rem 1.25rem 0.5rem; font-size: 10px; color: var(--muted); letter-spacing: 1px; text-transform: uppercase; border-bottom: 0.5px solid var(--border); }
.search-results-wrap .product-row { padding: 13px 1.25rem; border-bottom: 0.5px solid var(--border); display: flex; align-items: center; cursor: pointer; gap: 12px; transition: background 0.1s; }
.search-results-wrap .product-row:hover { background: var(--bg); }

.empty-state {
  padding: 3rem 1.25rem;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  grid-column: 1/-1;
}

/* ── Layer 2: Back bar ───────────────────────────────────── */

.back-bar {
  background: var(--black);
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.back-btn {
  background: transparent;
  border: none;
  color: #888;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  font-family: 'Montserrat', sans-serif;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  white-space: nowrap;
  transition: color 0.15s;
}
.back-btn:hover { color: var(--off); }
.back-bar-brand {
  font-size: 12px;
  font-weight: 600;
  color: var(--off);
  text-transform: uppercase;
  letter-spacing: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Layer 2: Product list ───────────────────────────────── */

.product-list { padding: 0.5rem 0 5rem; background: #fff; }

.product-row {
  display: flex;
  align-items: center;
  padding: 13px 1.25rem;
  border-bottom: 0.5px solid var(--border);
  cursor: pointer;
  gap: 12px;
  transition: background 0.1s;
}
.product-row:hover  { background: var(--bg); }
.product-row:active { background: #eceae4; }
.product-row:last-child { border-bottom: none; }

.prod-row-img {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  flex-shrink: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.prod-row-img img { width: 100%; height: 100%; object-fit: cover; }

.prod-row-info { flex: 1; min-width: 0; }
.prod-row-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--black);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 3px;
}
.prod-row-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.prod-row-price  { font-size: 12px; font-weight: 600; color: var(--black); }
.prod-row-opts   { font-size: 11px; color: #25a244; font-weight: 600; }

.prod-row-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  flex-shrink: 0;
}
.stock-dot {
  width: 8px; height: 8px; border-radius: 50%;
}
.stock-dot.in  { background: #25a244; }
.stock-dot.low { background: #e6a817; }

.prod-row-tags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 3px; }
.ptag { font-size: 9px; font-weight: 600; letter-spacing: 0.8px; text-transform: uppercase; padding: 2px 5px; border-radius: 3px; }
.ptag.vegan   { background: rgba(28,74,40,0.1);  color: #1c4a28; }
.ptag.isolate { background: rgba(28,58,92,0.1);  color: #1c3a5c; }

.prod-list-section-head {
  padding: 10px 1.25rem 6px;
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  background: var(--bg);
  border-bottom: 0.5px solid var(--border);
}

/* ── Modals ───────────────────────────────────────────────── */

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal-overlay.open { display: flex; }

.modal-sheet {
  background: #fff;
  border-radius: 16px;
  padding: 1.5rem;
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-handle { display: none; }

/* Product modal header */
.modal-header {
  display: flex;
  gap: 14px;
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 0.5px solid var(--border);
}
.modal-header-img {
  width: 72px; height: 72px;
  border-radius: 8px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.modal-header-img img { width: 100%; height: 100%; object-fit: cover; }
.modal-header-info { flex: 1; min-width: 0; }
.modal-brand { font-size: 9px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 4px; }
.modal-name  { font-size: 15px; font-weight: 500; color: var(--black); line-height: 1.3; margin-bottom: 5px; }
.modal-tags  { display: flex; gap: 4px; margin-bottom: 6px; flex-wrap: wrap; }
.modal-price { font-size: 18px; font-weight: 600; color: var(--black); }

/* Matrix */
.modal-section-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
  margin-top: 1.25rem;
}
.matrix-legend {
  font-size: 11px; color: var(--muted); margin-bottom: 10px;
  display: flex; align-items: center; gap: 4px;
}
.legend-ok   { color: #25a244; }
.legend-low  { color: #e6a817; }
.legend-zero { color: #ccc; }

.matrix-scroll { overflow-x: auto; }
.matrix-table  {
  width: 100%; border-collapse: collapse; font-size: 13px;
  min-width: 0;
}
.matrix-table thead th {
  font-size: 10px; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.8px;
  padding: 8px 8px; border-bottom: 0.5px solid var(--border);
  text-align: center; white-space: nowrap;
}
.matrix-table thead th:first-child { text-align: left; padding-left: 0; min-width: 70px; }
.matrix-table tbody td {
  padding: 9px 8px; border-bottom: 0.5px solid var(--border);
  text-align: center; vertical-align: middle;
}
.matrix-table tbody tr:last-child td { border-bottom: none; }
.sz-label  { font-size: 13px; font-weight: 500; color: var(--black); text-align: left !important; padding-left: 0 !important; white-space: nowrap; }
.qty-ok    { color: #25a244; font-weight: 600; font-size: 13px; }
.qty-low   { color: #e6a817; font-weight: 600; font-size: 13px; }
.qty-zero  { color: #ddd; font-size: 12px; }

/* Flavour accordion */
.flv-group  { border: 0.5px solid var(--border); border-radius: 8px; margin-bottom: 8px; overflow: hidden; }
.flv-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 11px 14px; cursor: pointer; background: var(--bg);
  transition: background 0.15s;
}
.flv-header:hover  { background: #efeeed; }
.flv-name    { font-size: 13px; font-weight: 500; color: var(--black); }
.flv-chevron { font-size: 11px; color: var(--muted); transition: transform 0.15s; }
.flv-chevron.open { transform: rotate(90deg); }
.flv-body { display: none; padding: 0 10px 10px; }

/* Simple branch table (no variants) */
.branch-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.branch-table td { padding: 9px 0; border-bottom: 0.5px solid var(--border); }
.branch-table td:last-child { text-align: right; }
.branch-table tr:last-child td { border-bottom: none; }
.no-stock { color: #ccc; font-size: 12px; }
.in-stock  { color: #25a244; font-weight: 600; }
.low-stock { color: #e6a817; font-weight: 600; }

/* Modal footer */
.modal-footer { margin-top: 1.25rem; }
.modal-grab-btn {
  width: 100%; background: var(--off); border: 0.5px solid #dddbd6;
  border-radius: 8px; padding: 13px 16px; font-size: 13px; font-weight: 600;
  color: var(--black); cursor: pointer; font-family: 'Montserrat', sans-serif;
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px; transition: background 0.15s;
}
.modal-grab-btn:hover { background: #eceae4; }
.modal-grab-arrow { font-size: 16px; }
.modal-close-btn {
  width: 100%; background: transparent; border: 0.5px solid var(--border);
  border-radius: 8px; padding: 12px; font-size: 12px; cursor: pointer;
  color: var(--muted); font-family: 'Montserrat', sans-serif;
  transition: border-color 0.15s;
}
.modal-close-btn:hover { border-color: #aaa; }

/* Grab modal */
.grab-modal-header { display: flex; align-items: center; gap: 12px; margin-bottom: 1.25rem; padding-bottom: 1.25rem; border-bottom: 0.5px solid var(--border); }
.grab-icon  { width: 42px; height: 42px; background: var(--grab); border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.grab-title { font-size: 16px; font-weight: 600; color: var(--black); }
.grab-sub   { font-size: 12px; color: var(--muted); margin-top: 2px; }
.info-block { margin-bottom: 1.25rem; }
.info-label { font-size: 10px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 8px; }
.info-body  { font-size: 13px; color: var(--black); line-height: 1.7; }
.pay-list   { display: flex; flex-direction: column; gap: 7px; margin-top: 10px; }
.pay-row    { display: flex; align-items: center; gap: 10px; border: 0.5px solid var(--border); border-radius: 8px; padding: 9px 12px; }
.pay-row.available   { border-color: rgba(28,74,40,0.2); }
.pay-row.unavailable { opacity: 0.4; }
.pay-icon  { font-size: 14px; width: 20px; text-align: center; flex-shrink: 0; }
.pay-label { flex: 1; font-size: 12px; font-weight: 500; color: var(--black); }
.pay-badge { font-size: 10px; font-weight: 600; padding: 2px 8px; border-radius: 10px; white-space: nowrap; }
.pay-badge.yes { background: rgba(28,74,40,0.1);  color: #1c4a28; }
.pay-badge.no  { background: rgba(122,31,31,0.07); color: #7a1f1f; }
.store-box { background: var(--black); border-radius: 8px; padding: 13px 14px; margin: 1.25rem 0; font-size: 13px; color: #ccc; line-height: 1.65; }
.store-box strong { color: var(--off); }
.wa-btn {
  width: 100%; background: var(--green); color: #fff; border: none;
  border-radius: 8px; padding: 14px; font-size: 13px; font-weight: 600;
  cursor: pointer; font-family: 'Montserrat', sans-serif;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin-bottom: 8px; transition: background 0.15s;
}
.wa-btn:hover { background: #1da851; }

/* ── Payment terms modal ─────────────────────────────────── */
.terms-icon { font-size: 32px; text-align: center; margin-bottom: 10px; }
.terms-title { font-size: 20px; font-weight: 600; color: var(--black); text-align: center; margin-bottom: 4px; }
.terms-subtitle { font-size: 13px; color: var(--muted); text-align: center; margin-bottom: 1.25rem; }

.terms-body { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 1rem; }
.terms-row { display: flex; align-items: center; justify-content: space-between; padding: 13px 16px; border-bottom: 0.5px solid var(--border); gap: 12px; background: #fff; }
.terms-row-icon { font-size: 16px; flex-shrink: 0; }
.terms-row:last-child { border-bottom: none; }
.terms-row.unavail { opacity: 0.5; }
.terms-row-label { font-size: 14px; font-weight: 500; color: var(--black); }
.terms-badge { font-size: 11px; font-weight: 600; padding: 4px 12px; border-radius: 20px; white-space: nowrap; }
.terms-badge.yes { background: rgba(28,74,40,0.12); color: #1c4a28; }
.terms-badge.no  { background: rgba(122,31,31,0.1); color: #7a1f1f; }
.terms-divider { height: 1px; background: var(--border); }

.terms-note { font-size: 13px; color: #555; line-height: 1.7; margin-bottom: 1.25rem; padding: 14px 16px; background: #fffbf0; border-radius: var(--radius); border: 1px solid #e6c84a; }

.terms-check-row { display: flex; align-items: flex-start; gap: 12px; padding: 16px; background: #1c1c1c; border-radius: var(--radius); cursor: pointer; margin-bottom: 1rem; }
.terms-check-row input { width: 18px; height: 18px; accent-color: #f5f3ef; cursor: pointer; flex-shrink: 0; margin-top: 1px; }
.terms-check-label { font-size: 14px; font-weight: 600; color: #f5f3ef; line-height: 1.4; }

.terms-proceed-btn {
  width: 100%; background: #888; color: #fff; border: none;
  border-radius: var(--radius); padding: 15px; font-size: 14px; font-weight: 600;
  cursor: not-allowed; font-family: 'Montserrat', sans-serif; transition: all 0.2s;
}
.terms-proceed-btn.enabled { background: var(--grab); cursor: pointer; }
.terms-proceed-btn.enabled:hover { background: #009944; }

/* ── FAB ─────────────────────────────────────────────────── */
.advice-fab {
  position: fixed; bottom: 20px; right: 16px; z-index: 50;
  display: flex; align-items: center; gap: 8px;
  background: var(--black); color: var(--off); border: none;
  border-radius: 24px; padding: 9px 14px 9px 11px;
  font-family: 'Montserrat', sans-serif; font-size: 12px; font-weight: 500;
  cursor: pointer; box-shadow: 0 2px 12px rgba(0,0,0,0.2);
  transition: background 0.15s;
}
.advice-fab:hover { background: #333; }
.wa-dot { width: 7px; height: 7px; background: var(--green); border-radius: 50%; flex-shrink: 0; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 380px) {
  .brand-grid { grid-template-columns: repeat(3, 1fr); }
}