/* ── Reset & Base ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --tg-bg: var(--tg-theme-bg-color, #ffffff);
  --tg-text: var(--tg-theme-text-color, #222222);
  --tg-hint: var(--tg-theme-hint-color, #999999);
  --tg-link: var(--tg-theme-link-color, #2481cc);
  --tg-button: var(--tg-theme-button-color, #2481cc);
  --tg-button-text: var(--tg-theme-button-text-color, #ffffff);
  --tg-secondary-bg: var(--tg-theme-secondary-bg-color, #f0f0f0);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --transition: 0.18s ease;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--tg-bg);
  color: var(--tg-text);
  font-size: 15px;
  line-height: 1.5;
  overflow-x: hidden;
}

#app { min-height: 100vh; display: flex; flex-direction: column; }

/* ── Loading ──────────────────────────────────────────────────────────── */
.loading-screen {
  position: fixed; inset: 0;
  background: var(--tg-bg);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  z-index: 9999; gap: 16px;
}
.loader-logo { font-size: 56px; animation: pulse 1.2s infinite; }
.loader-text { color: var(--tg-hint); font-size: 14px; }
@keyframes pulse { 0%,100%{transform:scale(1);} 50%{transform:scale(1.12);} }

/* ── Page container ───────────────────────────────────────────────────── */
.page {
  display: none; flex-direction: column;
  min-height: 100vh; padding-bottom: 72px;
}
.page.active { display: flex; }

/* ── Header ───────────────────────────────────────────────────────────── */
.page-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--tg-bg);
  border-bottom: 1px solid var(--tg-secondary-bg);
  padding: 12px 16px;
  display: flex; align-items: center; gap: 10px;
  min-height: 52px;
}
.page-header h1 { font-size: 17px; font-weight: 600; flex: 1; }
.btn-back {
  background: none; border: none; cursor: pointer;
  color: var(--tg-link); font-size: 22px; line-height: 1;
  padding: 4px; border-radius: 50%; transition: background var(--transition);
}
.btn-back:active { background: var(--tg-secondary-bg); }

/* ── Bottom nav ───────────────────────────────────────────────────────── */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
  background: var(--tg-bg);
  border-top: 1px solid var(--tg-secondary-bg);
  display: flex; justify-content: space-around;
  padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
  backdrop-filter: blur(10px);
}
.nav-item {
  display: flex; flex-direction: column; align-items: center;
  gap: 2px; cursor: pointer; padding: 6px 12px;
  border-radius: var(--radius-sm); transition: background var(--transition);
  border: none; background: transparent; color: var(--tg-hint);
  font-size: 10px; min-width: 56px;
}
.nav-item .nav-icon { font-size: 22px; line-height: 1; }
.nav-item.active { color: var(--tg-button); }
.nav-item:active { background: var(--tg-secondary-bg); }

/* ── Cards ────────────────────────────────────────────────────────────── */
.card {
  background: var(--tg-bg);
  border-radius: var(--radius);
  border: 1px solid var(--tg-secondary-bg);
  padding: 14px;
  margin: 8px 12px;
  box-shadow: var(--shadow);
}
.card + .card { margin-top: 0; }
.card-title { font-weight: 600; font-size: 15px; margin-bottom: 6px; }
.card-subtitle { color: var(--tg-hint); font-size: 13px; }
.card-row { display: flex; justify-content: space-between; align-items: center; padding: 4px 0; }
.card-row:not(:last-child) { border-bottom: 1px solid var(--tg-secondary-bg); }

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 11px 18px; border-radius: var(--radius);
  border: none; cursor: pointer; font-size: 14px; font-weight: 600;
  transition: opacity var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn:active { opacity: 0.8; transform: scale(0.97); }
.btn-primary { background: var(--tg-button); color: var(--tg-button-text); }
.btn-secondary { background: var(--tg-secondary-bg); color: var(--tg-text); }
.btn-danger { background: #ff3b30; color: #fff; }
.btn-success { background: #34c759; color: #fff; }
.btn-outline {
  background: transparent; color: var(--tg-button);
  border: 1.5px solid var(--tg-button);
}
.btn-sm { padding: 7px 12px; font-size: 13px; border-radius: var(--radius-sm); }
.btn-full { width: 100%; }
.btn-row { display: flex; gap: 8px; padding: 8px 12px; }
.btn-row .btn { flex: 1; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* ── Form ─────────────────────────────────────────────────────────────── */
.form-group { padding: 6px 12px; }
.form-group label { display: block; font-size: 13px; color: var(--tg-hint); margin-bottom: 5px; }
.form-control {
  width: 100%; padding: 11px 14px;
  background: var(--tg-secondary-bg);
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--tg-text); font-size: 15px;
  outline: none; transition: border-color var(--transition);
}
.form-control:focus { border-color: var(--tg-button); }
.form-control::placeholder { color: var(--tg-hint); }
textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control { appearance: none; }

/* ── Category tree picker ─────────────────────────────────────────────── */
.cat-picker {
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--tg-secondary-bg);
  overflow: hidden;
}
.cat-selected {
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(0,0,0,0.08);
}
.cat-selected-label {
  font-size: 14px;
  color: var(--tg-text);
  font-weight: 600;
}
.cat-tree {
  max-height: 52vh;
  overflow: auto;
  padding: 6px 6px 8px;
}
.cat-row {
  display: flex;
  align-items: center;
  gap: 6px;
  border-radius: 10px;
  padding: 6px 6px;
  margin: 2px 0;
  background: rgba(255,255,255,0.0);
}
.cat-row:active { background: rgba(0,0,0,0.05); }
.cat-row.selected {
  background: color-mix(in srgb, var(--tg-button) 16%, transparent);
}

.cat-toggle,
.cat-item {
  border: none;
  background: transparent;
  color: inherit;
  padding: 0;
}

.cat-toggle {
  width: 28px;
  height: 28px;
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  flex: 0 0 28px;
}
.cat-toggle:active { background: rgba(0,0,0,0.06); }
.cat-toggle::before {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--tg-hint);
  border-bottom: 2px solid var(--tg-hint);
  transform: rotate(-45deg);
  transition: transform var(--transition);
}
.cat-toggle.open::before { transform: rotate(45deg); }

.cat-toggle-spacer {
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
}

.cat-item {
  text-align: left;
  width: 100%;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.25;
  padding: 6px 8px;
  border-radius: 10px;
}
.cat-item:active { background: rgba(0,0,0,0.06); }

.cat-children { margin-left: 12px; }
.cat-children.hidden { display: none; }

/* Level coloring (subtle) */
.cat-level-0 { color: var(--tg-text); }
.cat-level-1 { color: color-mix(in srgb, var(--tg-text) 92%, var(--tg-link)); }
.cat-level-2 { color: color-mix(in srgb, var(--tg-text) 90%, #6C63FF); }
.cat-level-3 { color: color-mix(in srgb, var(--tg-text) 88%, #3ECFCF); }
.cat-level-4 { color: color-mix(in srgb, var(--tg-text) 86%, #FF9500); }
.cat-level-5 { color: color-mix(in srgb, var(--tg-text) 84%, #34C759); }
.cat-level-6 { color: color-mix(in srgb, var(--tg-text) 82%, #AF52DE); }

/* ── Badges ───────────────────────────────────────────────────────────── */
.badge {
  display: inline-block; padding: 2px 8px;
  border-radius: 20px; font-size: 11px; font-weight: 600;
}
.badge-pending { background: #fff3cd; color: #856404; }
.badge-approved { background: #d4edda; color: #155724; }
.badge-published { background: #cce5ff; color: #004085; }
.badge-rejected { background: #f8d7da; color: #721c24; }
.badge-archived { background: #e2e3e5; color: #383d41; }
.badge-expired  { background: #ffeeba; color: #856404; }
.badge-sold     { background: #d4edda; color: #155724; }
.badge-cart     { background: #e2e3e5; color: #383d41; }
.badge-processing { background: #cce5ff; color: #004085; }
.badge-paid     { background: #d4edda; color: #155724; }
.badge-shipped  { background: #cce5ff; color: #004085; }
.badge-completed { background: #d4edda; color: #155724; }
.badge-cancelled { background: #f8d7da; color: #721c24; }
.badge-seller_rejected { background: #f8d7da; color: #721c24; }
.badge-pending_seller_confirmation { background: #fff3cd; color: #856404; }

/* ── Lists ────────────────────────────────────────────────────────────── */
.list-section { padding: 8px 12px 4px; }
.list-section-title { font-size: 12px; font-weight: 600; color: var(--tg-hint); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }

.item-row {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 12px 14px; border-radius: var(--radius);
  margin-bottom: 6px; cursor: pointer;
  background: var(--tg-bg); border: 1px solid var(--tg-secondary-bg);
  transition: background var(--transition);
}
.item-row:active { background: var(--tg-secondary-bg); }
.item-icon { font-size: 28px; flex-shrink: 0; }
.item-content { flex: 1; min-width: 0; }
.item-title { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-meta { font-size: 12px; color: var(--tg-hint); margin-top: 2px; }
.item-right { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; flex-shrink: 0; }

/* ── Main menu grid ───────────────────────────────────────────────────── */
.menu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px; padding: 12px;
}
.menu-tile {
  background: var(--tg-secondary-bg);
  border-radius: var(--radius);
  padding: 18px 14px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  cursor: pointer; border: 1.5px solid transparent;
  transition: border-color var(--transition), background var(--transition);
  text-align: center;
}
.menu-tile:active { background: var(--tg-button); color: var(--tg-button-text); }
.menu-tile.highlight { border-color: var(--tg-button); }
.menu-tile-icon { font-size: 34px; }
.menu-tile-label { font-size: 13px; font-weight: 600; }

/* ── Group selector ───────────────────────────────────────────────────── */
.group-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--tg-button); color: var(--tg-button-text);
  border-radius: 20px; padding: 4px 12px;
  font-size: 12px; font-weight: 600; cursor: pointer; border: none;
  max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* ── Empty state ──────────────────────────────────────────────────────── */
.empty-state {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 12px; padding: 48px 24px; text-align: center;
}
.empty-state-icon { font-size: 52px; }
.empty-state-title { font-weight: 600; font-size: 17px; }
.empty-state-text { color: var(--tg-hint); font-size: 14px; }

/* ── Toast ────────────────────────────────────────────────────────────── */
.toast-container { position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%); z-index: 9000; display: flex; flex-direction: column; gap: 6px; }
.toast {
  background: rgba(0,0,0,0.82); color: #fff;
  padding: 10px 20px; border-radius: 20px;
  font-size: 13px; white-space: nowrap;
  animation: toastIn 0.2s ease;
}
@keyframes toastIn { from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:translateY(0);} }

/* ── Modal / Drawer ───────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,0.45);
  display: flex; align-items: flex-end;
}
.modal-overlay.hidden { display: none; }
.modal-sheet {
  background: var(--tg-bg);
  border-radius: 20px 20px 0 0;
  width: 100%; max-height: 92vh;
  overflow-y: auto; padding: 16px 0 calc(16px + env(safe-area-inset-bottom));
  animation: slideUp 0.25s ease;
}
@keyframes slideUp { from{transform:translateY(100%);} to{transform:translateY(0);} }
.modal-handle {
  width: 40px; height: 4px;
  background: var(--tg-hint); border-radius: 2px;
  margin: 0 auto 16px; opacity: 0.4;
}
.modal-title { font-size: 17px; font-weight: 700; padding: 0 16px 12px; }

/* ── Section divider ──────────────────────────────────────────────────── */
.section-divider { height: 8px; background: var(--tg-secondary-bg); margin: 4px 0; }

/* ── Quantity control ─────────────────────────────────────────────────── */
.qty-control { display: flex; align-items: center; gap: 10px; }
.qty-btn {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--tg-button); color: var(--tg-button-text);
  border: none; font-size: 20px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: opacity var(--transition);
}
.qty-btn:active { opacity: 0.7; }
.qty-value { min-width: 50px; text-align: center; font-weight: 700; font-size: 17px; }

/* ── Tab bar ──────────────────────────────────────────────────────────── */
.tab-bar {
  display: flex; overflow-x: auto;
  padding: 8px 12px; gap: 6px;
  scrollbar-width: none; border-bottom: 1px solid var(--tg-secondary-bg);
  position: sticky; top: 52px; background: var(--tg-bg); z-index: 50;
}
.tab-bar::-webkit-scrollbar { display: none; }
.tab-btn {
  flex-shrink: 0; padding: 7px 14px;
  border-radius: 20px; border: 1.5px solid var(--tg-secondary-bg);
  background: transparent; color: var(--tg-hint);
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: all var(--transition);
}
.tab-btn.active {
  background: var(--tg-button); color: var(--tg-button-text);
  border-color: var(--tg-button);
}

/* ── Spinner ──────────────────────────────────────────────────────────── */
.spinner {
  width: 28px; height: 28px;
  border: 3px solid var(--tg-secondary-bg);
  border-top-color: var(--tg-button);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 16px auto;
}
@keyframes spin { to { transform: rotate(360deg); } }
.spinner-inline {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

/* ── Product card ─────────────────────────────────────────────────────── */
.product-card {
  border: 1px solid var(--tg-secondary-bg);
  border-radius: var(--radius);
  padding: 12px; margin: 6px 12px;
  background: var(--tg-bg);
}
.product-card-name { font-weight: 600; font-size: 15px; }
.product-card-price { color: var(--tg-button); font-weight: 700; font-size: 16px; margin: 4px 0; }
.product-card-avail { font-size: 12px; color: var(--tg-hint); }
.product-card-actions { display: flex; gap: 8px; margin-top: 10px; }

/* ── Avatar ───────────────────────────────────────────────────────────── */
.avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--tg-button); color: var(--tg-button-text);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px; flex-shrink: 0;
}

/* ── Admin panel ──────────────────────────────────────────────────────── */
.admin-stat-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 8px; padding: 8px 12px;
}
.admin-stat-tile {
  background: var(--tg-secondary-bg);
  border-radius: var(--radius-sm);
  padding: 12px 8px; text-align: center;
}
.admin-stat-value { font-size: 22px; font-weight: 700; color: var(--tg-button); }
.admin-stat-label { font-size: 11px; color: var(--tg-hint); margin-top: 2px; }

/* ── User detail ──────────────────────────────────────────────────────── */
.user-detail-header {
  display: flex; align-items: center; gap: 14px;
  padding: 16px;
}
.user-detail-info h2 { font-size: 17px; font-weight: 700; }
.user-detail-info p { font-size: 13px; color: var(--tg-hint); }

/* ── Price table ──────────────────────────────────────────────────────── */
.price-row {
  display: flex; justify-content: space-between;
  padding: 10px 14px; border-bottom: 1px solid var(--tg-secondary-bg);
  cursor: pointer; align-items: center;
}
.price-row:active { background: var(--tg-secondary-bg); }
.price-label { font-size: 14px; }
.price-value { font-weight: 700; color: var(--tg-button); font-size: 14px; }

/* ── Info block ───────────────────────────────────────────────────────── */
.info-block {
  background: var(--tg-secondary-bg);
  border-radius: var(--radius);
  padding: 12px 16px; margin: 8px 12px;
  font-size: 13px; color: var(--tg-hint); line-height: 1.6;
}

/* ── Notification badge ───────────────────────────────────────────────── */
.notif-badge {
  background: #ff3b30; color: #fff;
  font-size: 10px; font-weight: 700;
  border-radius: 10px; padding: 1px 5px;
  position: absolute; top: 2px; right: 6px;
}
.nav-item { position: relative; }

/* ── Photo strip ──────────────────────────────────────────────────────── */
.photo-strip { display: flex; gap: 6px; overflow-x: auto; padding: 8px 0; scrollbar-width: none; }
.photo-strip::-webkit-scrollbar { display: none; }
.photo-thumb {
  width: 72px; height: 72px; border-radius: var(--radius-sm);
  object-fit: cover; flex-shrink: 0;
  border: 1px solid var(--tg-secondary-bg);
}

/* ── Announcement preview ─────────────────────────────────────────────── */
.ad-preview-box {
  background: var(--tg-secondary-bg);
  border-radius: var(--radius); padding: 14px;
  margin: 8px 12px; font-size: 14px; line-height: 1.8;
}
.ad-preview-box b { color: var(--tg-button); }

/* ── Step indicator ───────────────────────────────────────────────────── */
.step-indicator {
  display: flex; gap: 6px; padding: 12px 16px;
  justify-content: center;
}
.step-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--tg-secondary-bg); transition: background var(--transition);
}
.step-dot.active { background: var(--tg-button); }
.step-dot.done { background: #34c759; }

/* ── Scrollable content ───────────────────────────────────────────────── */
.scroll-content { flex: 1; overflow-y: auto; }

/* ── Floating action button ───────────────────────────────────────────── */
.fab {
  position: fixed; bottom: 84px; right: 16px; z-index: 150;
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--tg-button); color: var(--tg-button-text);
  border: none; font-size: 26px; cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  display: flex; align-items: center; justify-content: center;
  transition: transform var(--transition), opacity var(--transition);
}
.fab:active { transform: scale(0.92); opacity: 0.85; }
.fab.hidden { display: none; }

/* ── Helper utils ─────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.text-hint { color: var(--tg-hint); }
.text-danger { color: #ff3b30; }
.text-success { color: #34c759; }
.text-center { text-align: center; }
.mt-4 { margin-top: 4px; } .mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; } .mt-16 { margin-top: 16px; }
.p-12 { padding: 12px; } .p-16 { padding: 16px; }
.fw-bold { font-weight: 700; }
.fs-12 { font-size: 12px; } .fs-14 { font-size: 14px; }