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

html {
  font-size: 14px;
}

body {
  min-height: 100vh;
  font-family: var(--font);
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ================================================
   2. APP SHELL + MAIN LAYOUT
   Used by: .app-shell / .main-layout
   ================================================ */
.app-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.main-layout {
  display: flex;
  flex: 1;
  gap: 0;
  overflow: hidden;
}

/* ================================================
   3. TOP BAR
   Used by: top navigation
   ================================================ */
.top-bar {
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  height: 52px;
  padding: 0 24px;
  color: var(--white);
  background: var(--top);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
}

.top-bar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.top-bar-logo .logo-icon {
  font-size: 20px;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.top-bar-subtitle {
  margin-left: 4px;
  padding-left: 12px;
  border-left: 1px solid rgba(255, 255, 255, 0.25);
  font-size: 12px;
  font-weight: 400;
  opacity: 0.7;
}

.top-bar-spacer {
  flex: 1;
}

.top-bar-version {
  font-family: var(--font-mono);
  font-size: 11px;
  opacity: 0.5;
}

/* ================================================
   4. MASTER PANEL
   Used by: fruit list sidebar
   ================================================ */
.master-panel {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  width: 320px;
  min-width: 280px;
  max-width: 360px;
  overflow: hidden;
  background: var(--white);
  border-right: 1px solid var(--border);
}

.master-header {
  flex-shrink: 0;
  padding: 16px 16px 12px;
  background: var(--white);
  border-bottom: 1px solid var(--border-light);
}

.master-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.fruit-count {
  padding: 2px 8px;
  border-radius: 20px;
  color: var(--primary);
  background: var(--primary-light);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}

.master-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 12px;
}

.btn-master {
  width: 100%;
  justify-content: center;
}

/* ================================================
   5. GLOBAL SEARCH INPUTS
   Used by: left panel search + supplier filter
   ================================================ */
.search-wrap,
.supplier-filter-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon,
.filter-icon {
  position: absolute;
  left: 10px;
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

#searchInput,
.supplier-filter-input {
  width: 100%;
  padding: 8px 34px 8px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  color: var(--text-primary);
  background: var(--bg);
  font-family: var(--font);
  font-size: 13px;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

#searchInput::placeholder,
.supplier-filter-input::placeholder {
  color: var(--text-muted);
}

#searchInput:focus,
.supplier-filter-input:focus {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 122, 90, 0.1);
}

#clearSearch,
#clearSearchSupplier {
  position: absolute;
  right: 8px;
  padding: 2px;
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  transition: color 0.15s;
}

#clearSearch:hover,
#clearSearchSupplier:hover {
  color: var(--primary);
}

/* ================================================
   6. FRUIT LIST
   Used by: renderFruitList()
   ================================================ */
.fruit-list {
  flex: 1;
  padding: 6px 0;
  overflow-y: auto;
}

.fruit-list::-webkit-scrollbar {
  width: 4px;
}

.fruit-list::-webkit-scrollbar-track {
  background: transparent;
}

.fruit-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.fruit-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-left: 3px solid transparent;
  cursor: pointer;
  transition: background 0.12s;
}

.fruit-item:hover,
.fruit-item.active {
  background: var(--primary-light);
}

.fruit-item.active {
  border-left-color: var(--primary);
}

.fruit-item-image-wrap {
  flex-shrink: 0;
  width: 54px;
  height: 54px;
  overflow: hidden;
  background: var(--bg-alt);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.fruit-item-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.2s;
}

.fruit-item:hover .fruit-item-img {
  transform: scale(1.05);
}

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

.fruit-item-name {
  margin-bottom: 3px;
  overflow: hidden;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fruit-item-category {
  margin-bottom: 3px;
}

.fruit-item-price {
  color: var(--text-secondary);
  font-size: 12px;
}

.price-value {
  color: var(--primary);
  font-family: var(--font-mono);
  font-weight: 600;
}

.price-unit {
  color: var(--text-muted);
}

.fruit-item-arrow {
  flex-shrink: 0;
  color: var(--text-muted);
  font-size: 18px;
  font-weight: 300;
}

.fruit-item-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.fruit-item-delete {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: 1px solid transparent;
  border-radius: 50%;
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  transition: all 0.15s;
}

.fruit-item-delete:hover {
  color: var(--error);
  background: var(--error-bg);
  border-color: #f5c6c2;
}

/* ================================================
   7. REUSABLE BADGES + EMPTY LIST STATES
   Used by: fruit cards / detail header / no results
   ================================================ */
.category-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.category-alkaline {
  color: var(--alkaline-text);
  background: var(--alkaline-bg);
  border: 1px solid var(--alkaline-border);
}

.category-acidic {
  color: var(--acidic-text);
  background: var(--acidic-bg);
  border: 1px solid var(--acidic-border);
}

.no-results {
  padding: 48px 24px;
  color: var(--text-muted);
  text-align: center;
}

.no-results-icon {
  display: block;
  margin-bottom: 10px;
  font-size: 36px;
}

.no-results p {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.no-results small {
  font-size: 12px;
}

/* ================================================
   8. DETAIL PANEL SCROLL AREA
   Used by: right side content wrapper
   ================================================ */
.detail-panel {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
  background: var(--bg);
}

.detail-panel::-webkit-scrollbar {
  width: 5px;
}

.detail-panel::-webkit-scrollbar-track {
  background: transparent;
}

.detail-panel::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

/* ================================================
   9. EMPTY STATE
   Used by: showEmptyState()
   ================================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  height: 100%;
  padding: 48px;
  color: var(--text-muted);
  text-align: center;
}

.empty-state-icon {
  margin-bottom: 16px;
  font-size: 64px;
  opacity: 0.5;
  animation: float 3s ease-in-out infinite;
}

.empty-state h3 {
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 18px;
  font-weight: 600;
}

.empty-state p {
  max-width: 300px;
  font-size: 13px;
  line-height: 1.6;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-8px);
  }
}

/* ================================================
   10. DETAIL HEADER
   Used by: renderDetailPanel()
   ================================================ */
.detail-header {
  padding: 24px;
  background: var(--white);
  border-bottom: 1px solid var(--border-light);
  animation: fadeSlideIn 0.25s ease;
}

.detail-hero {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.detail-img-wrap {
  position: relative;
  flex-shrink: 0;
}

.detail-img {
  display: block;
  width: 140px;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.detail-badge {
  position: absolute;
  bottom: -6px;
  left: 50%;
  font-size: 10px;
  transform: translateX(-50%);
  white-space: nowrap;
}

.detail-title-block {
  flex: 1;
  padding-top: 4px;
}

.detail-fruit-name {
  margin-bottom: 10px;
  color: var(--text-primary);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.detail-description {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.7;
}

.detail-item-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================================
   11. TABS NAVIGATION
   Used by: Supplier Info / More Data tabs
   ================================================ */
.tabs-nav {
  display: flex;
  gap: 0;
  padding: 0 24px;
  background: var(--white);
  border-bottom: 2px solid var(--border-light);
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: -2px;
  padding: 12px 20px;
  border: none;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--primary);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

.tab-icon {
  font-size: 14px;
}

.tab-content {
  padding: 20px 24px;
  animation: fadeSlideIn 0.2s ease;
}

/* ================================================
   12. MORE DATA TAB
   Used by: renderMoreDataTab()
   ================================================ */
.more-data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

.more-data-card {
  padding: 14px 16px;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s, transform 0.15s;
}

.more-data-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.more-data-label {
  margin-bottom: 6px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.more-data-value {
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
}

/* ================================================
   13. SUPPLIER TAB SHELL
   Used by: renderSupplierTab()
   ================================================ */

.supplier-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.supplier-filter-wrap {
  width: 400px;
}

.supplier-actions {
  display: flex;
  gap: 8px;
}

/* ================================================
   14. BUTTON SYSTEM
   Used by: create / save / cancel / modal actions
   ================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.15s;
  white-space: nowrap;
}

.btn-create {
  color: var(--white);
  background: var(--primary);
  border-color: var(--primary);
}

.btn-create:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  box-shadow: var(--shadow-sm);
}

.btn-create:active {
  transform: scale(0.97);
}

.btn-save {
  color: var(--white);
  background: var(--info);
  border-color: var(--info);
}

.btn-save:hover {
  background: var(--info-two);
  border-color: var(--blue);
  box-shadow: var(--shadow-sm);
}

.btn-save:active {
  transform: scale(0.97);
}

.btn-cancel {
  color: var(--text-secondary);
  background: var(--white);
  border-color: var(--border);
}

.btn-cancel:hover {
  color: var(--error);
  background: var(--bg-alt);
}

.btn-danger {
  color: var(--white);
  background: var(--error);
  border-color: var(--error);
}

.btn-danger:hover {
  background: #a93226;
  border-color: #a93226;
  box-shadow: var(--shadow-sm);
}

.btn-danger:active {
  transform: scale(0.97);
}

/* ================================================
   15. SUPPLIER TABLE
   Used by: supplier table wrapper / header / rows
   ================================================ */
.table-wrapper {
  overflow: hidden;
  overflow-x: auto;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.supplier-table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  font-size: 13px;
}

.supplier-table thead {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--bg-alt);
}

.supplier-table th {
  padding: 10px 12px;
  border-bottom: 2px solid var(--border);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-align: left;
  text-transform: uppercase;
  user-select: none;
  white-space: nowrap;
}

.supplier-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
}

.supplier-row:last-child td {
  border-bottom: none;
}

.supplier-row:hover td {
  background: rgba(10, 122, 90, 0.03);
}

.supplier-row.dirty td {
  background: var(--accent-light);
}

.table-footer {
  padding: 8px 14px;
  color: var(--primary);
  background: var(--bg-alt);
  border-top: 1px solid var(--border-light);
  font-size: 11px;
  text-align: right;
}

.no-data {
  padding: 32px !important;
  color: var(--text-muted);
  font-style: italic;
  text-align: center;
}

/* ================================================
   16. SUPPLIER SORTING
   Used by: clickable supplier table headers
   ================================================ */
.sortable {
  cursor: pointer;
  transition: background 0.12s;
}

.sortable:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.sort-icon {
  display: inline-block;
  margin-left: 4px;
  font-size: 11px;
  opacity: 0.5;
}

.sorted-asc .sort-icon,
.sorted-desc .sort-icon {
  color: var(--primary);
  opacity: 1;
}

/* ================================================
   17. SUPPLIER INPUT CELLS
   Used by: inline editable supplier rows
   ================================================ */
.cell-input {
  width: 100%;
  min-width: 90px;
  padding: 5px 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  outline: none;
  color: var(--text-primary);
  background: transparent;
  font-family: var(--font);
  font-size: 13px;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
}

.cell-input:hover {
  background: var(--white);
  border-color: var(--border);
}

.cell-input:focus {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(10, 122, 90, 0.12);
}

.city-field-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.city-select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 28px !important;
  cursor: pointer;
}

.f4-icon {
  position: absolute;
  right: 6px;
  color: var(--primary);
  font-size: 10px;
  font-weight: 700;
  pointer-events: none;
}

/* ================================================
   18. SUPPLIER DELETE ACTION
   Used by: delete supplier button in each row
   ================================================ */
.btn-delete-supplier {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--error);
  background: var(--white);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.15s;
}

.btn-delete-supplier:hover {
  background: var(--error-bg);
  border-color: #f5c6c2;
  box-shadow: var(--shadow-sm);
}

.btn-delete-supplier:active {
  transform: scale(0.93);
}

/* ================================================
   19. MODAL OVERLAY + DIALOG
   Used by: delete modal + create supplier modal
   ================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(10, 20, 30, 0.45);
  backdrop-filter: blur(3px);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.modal-overlay.modal-visible {
  opacity: 1;
}

.modal-box {
  width: 100%;
  max-width: 420px;
  overflow: hidden;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0, 0, 0, 0.06);
  transform: translateY(16px) scale(0.97);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.modal-visible .modal-box {
  transform: translateY(0) scale(1);
}

.modal-box-form {
  max-width: 560px;
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border-light);
}

.modal-header-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: var(--error);
  background: var(--error-bg);
  font-size: 16px;
}

.modal-header-icon-create {
  color: var(--primary);
  background: var(--primary-light);
}

.modal-title {
  margin: 0 0 2px;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 700;
}

.modal-subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 12px;
}

.modal-body {
  padding: 20px 24px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 16px 24px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border-light);
}

/* ================================================
   20. CREATE SUPPLIER MODAL FORM
   Used by: showCreateSupplierModal()
   ================================================ */
.modal-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
}

.modal-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.modal-field:last-child {
  grid-column: 1 / -1;
}

.modal-field-full {
  grid-column: 1 / -1;
}

.modal-field span {
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
}

.modal-input {
  width: 100%;
  min-height: 40px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  color: var(--text-primary);
  background: var(--bg);
  font-family: var(--font);
  font-size: 13px;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.modal-input:focus {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 122, 90, 0.1);
}

.modal-textarea {
  min-height: 110px;
  resize: vertical;
}

.modal-input[type="file"] {
  padding: 6px;
  cursor: pointer;
  background: var(--white);
}

.modal-input[type="file"]::file-selector-button {
  margin-right: 12px;
  padding: 8px 14px;
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  color: var(--white);
  background: var(--primary);
  cursor: pointer;
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}

.modal-input[type="file"]::file-selector-button:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

.modal-input[type="file"]::file-selector-button:active {
  transform: scale(0.98);
}


/* ================================================
   21. DELETE SUPPLIER MODAL CONTENT
   Used by: showDeleteModal()
   ================================================ */
.modal-message {
  margin-bottom: 14px;
  color: var(--text-secondary);
  font-size: 13px;
}

.modal-supplier-card {
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.modal-supplier-name {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
}

.modal-supplier-name i {
  color: var(--primary);
}

.modal-supplier-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.modal-supplier-meta span {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--text-secondary);
  font-size: 12px;
}

.modal-supplier-meta i {
  color: var(--text-muted);
  font-size: 11px;
}

/* ================================================
   22. TOAST NOTIFICATIONS
   Used by: showToast()
   ================================================ */
.toast {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 9999;
  padding: 12px 20px;
  border-radius: var(--radius);
  opacity: 0;
  pointer-events: none;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  transform: translateY(20px);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: var(--shadow-lg);
}

.toast-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast-success {
  color: var(--success);
  background: var(--success-bg);
  border: 1px solid #b8ddd2;
}

.toast-info {
  color: var(--info);
  background: var(--info-bg);
  border: 1px solid #b8d4e8;
}

.toast-error {
  color: var(--error);
  background: var(--error-bg);
  border: 1px solid #f5c6c2;
}