/* =========================================================
   FILE: css/styles.css

   PURPOSE:
   PBOS Modern Design System

   DESCRIPTION:
   - CSS custom properties for theming
   - Responsive layout with collapsible sidebar
   - Polished components (cards, tables, forms, buttons, badges)
   - Smooth transitions and hover states
   - Mobile-first breakpoints
   - Toast notifications, loading spinners, empty states
   - Clean, modern aesthetic

   DESIGN TOKENS:
   - Colors: slate/indigo/emerald/amber palette
   - Spacing: 4px base unit
   - Typography: system font stack, 1.618 scale
   - Shadows: subtle layered elevation
   - Radius: 4px / 8px / 12px

   CHANGELOG
   =========================================================
   2026-05-07
   - FULL REPLACEMENT: complete redesign from scratch
   - Added CSS custom properties system
   - Responsive sidebar with mobile hamburger
   - Dashboard stats grid
   - Toast notifications
   - Loading spinner
   - Improved tables, forms, cards, buttons
   - Smooth transitions throughout
 ========================================================= */

/* =========================================================
   DESIGN TOKENS (CSS Custom Properties)
   ========================================================= */

:root {
  /* Colors - Neutral */
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-focus: #cbd5e1;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;

  /* Colors - Brand */
  --color-brand: #6366f1;
  --color-brand-hover: #4f46e5;
  --color-brand-light: #eef2ff;
  --color-brand-text: #ffffff;

  /* Colors - Semantic */
  --color-success: #10b981;
  --color-success-light: #ecfdf5;
  --color-warning: #f59e0b;
  --color-warning-light: #fffbeb;
  --color-error: #ef4444;
  --color-error-light: #fef2f2;
  --color-info: #3b82f6;
  --color-info-light: #eff6ff;

  /* Colors - Gender badges */
  --color-gender-male: #1e88e5;
  --color-gender-female: #e91e63;
  --color-gender-unisex: #7b1fa2;

  /* Colors - Sidebar */
  --sidebar-bg: #0f172a;
  --sidebar-text: #e2e8f0;
  --sidebar-hover: #1e293b;
  --sidebar-active: #334155;
  --sidebar-border: #1e293b;
  --sidebar-width: 260px;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-0_85: 0.85rem;
  --text-0_8: 0.8rem;
  --text-0_9: 0.9rem;
  --text-0_95: 0.95rem;

  /* Spacing (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* =========================================================
   DARK MODE
   ========================================================= */

[data-theme="dark"] {
  /* Neutral colors — dark slate palette */
  --color-bg: #0b1120;
  --color-surface: #1a2332;
  --color-surface-hover: #243044;
  --color-border: #2d3a4e;
  --color-border-focus: #475569;
  --color-text: #e2e8f0;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;

  /* Brand - keep hue, adjust light variant for dark bg */
  --color-brand-light: rgba(99, 102, 241, 0.18);

  /* Semantic backgrounds — transparent on dark */
  --color-success-light: rgba(16, 185, 129, 0.15);
  --color-warning-light: rgba(245, 158, 11, 0.15);
  --color-error-light: rgba(239, 68, 68, 0.15);
  --color-info-light: rgba(59, 130, 246, 0.15);

  /* Shadows — deeper on dark */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.45), 0 4px 6px -4px rgba(0, 0, 0, 0.35);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);

  /* =========================================================
     DARK MODE — OVERRIDES FOR HARDCODED COLORS
     ========================================================= */

  /* Danger button */
  .btn-danger,
  button.danger {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #fca5a5;
  }
  .btn-danger:hover,
  button.danger:hover {
    background: rgba(239, 68, 68, 0.25);
    border-color: #fca5a5;
  }

  /* Delete button */
  .btn-delete {
    border-color: rgba(239, 68, 68, 0.3);
  }
  .btn-delete:hover {
    color: #ffffff;
  }

  /* Status badges */
  .status-draft { background: #243044; color: #94a3b8; }
  .status-sent { background: rgba(59, 130, 246, 0.18); color: #93c5fd; }
  .status-paid { background: rgba(16, 185, 129, 0.15); color: #6ee7b7; }
  .status-partially_paid { background: rgba(245, 158, 11, 0.15); color: #fcd34d; }
  .status-overdue { background: rgba(239, 68, 68, 0.15); color: #fca5a5; }
  .status-cancelled { background: #243044; color: #64748b; }

  /* Badges */
  .badge-success { color: #6ee7b7; }
  .badge-warning { color: #fcd34d; }
  .badge-error { color: #fca5a5; }
  .badge-info { color: #93c5fd; }
  .badge-default { background: #243044; }
  .badge-linked { color: #6ee7b7; }

  /* Banners */
  .banner-info {
    color: #93c5fd;
    border-color: rgba(59, 130, 246, 0.25);
  }
  .banner-success {
    color: #6ee7b7;
    border-color: rgba(16, 185, 129, 0.25);
  }
  .banner-warning {
    color: #fcd34d;
    border-color: rgba(245, 158, 11, 0.25);
  }
  .banner-error {
    color: #fca5a5;
    border-color: rgba(239, 68, 68, 0.25);
  }

  /* Select dropdown arrow — lighter chevron for dark bg */
  select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  }

  /* Input focus ring — more visible on dark */
  input:focus,
  select:focus,
  textarea:focus {
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
  }

  /* Validation states */
  input.is-invalid,
  select.is-invalid,
  textarea.is-invalid,
  input.invalid,
  select.invalid,
  textarea.invalid {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.3) !important;
  }

  input.is-valid,
  select.is-valid,
  textarea.is-valid {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.3) !important;
  }

  /* Search dropdown */
  .search-dropdown-list {
    border-color: var(--color-border);
  }
  .search-dropdown-item {
    border-bottom-color: var(--color-border);
  }

  /* Hints */
  .hint {
    background: rgba(99, 102, 241, 0.1);
  }

  /* Tags */
  .tag-clickable {
    border-color: var(--color-border);
  }

  /* Selected row highlight */
  .search-dropdown-item.active,
  .search-dropdown-item:hover {
    background: rgba(99, 102, 241, 0.18);
  }

  /* Sidebar nav danger */
  .sidebar-nav .danger {
    color: #fca5a5;
  }
  .sidebar-nav .danger:hover {
    background: rgba(239, 68, 68, 0.15);
  }

  /* Category badges */
  [data-theme="dark"] .category-fragrance { background: #1b3d1b; color: #81c784; }
  [data-theme="dark"] .category-carrier { background: #1a2a4a; color: #64b5f6; }
  [data-theme="dark"] .category-packaging { background: #3d2a1a; color: #ffb74d; }
  [data-theme="dark"] .category-label { background: #4a1a2a; color: #f06292; }
  [data-theme="dark"] .category-other { background: #2a1a3d; color: #ce93d8; }
  [data-theme="dark"] .refill-badge { background: #2a1a3d; color: #ce93d8; }
}

/* =========================================================
   SKIP TO CONTENT
   ========================================================= */

.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-brand);
  color: #fff;
  padding: 8px 16px;
  z-index: 10001;
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: top 150ms ease;
}

.skip-to-content:focus,
.skip-to-content:focus-visible {
  top: 0;
}

/* Screen-reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* =========================================================
   RESET & BASE
   ========================================================= */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

/* =========================================================
   APP LAYOUT
   ========================================================= */

.app-shell {
  display: flex;
  min-height: 100vh;
}

/* Mobile menu toggle */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  z-index: 999;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  border: none;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-fast);
}

.mobile-menu-btn:hover {
  transform: scale(1.05);
}

.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 998;
}

.mobile-overlay.active {
  display: block;
}

/* =========================================================
   SIDEBAR
   ========================================================= */

.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow-y: auto;
  position: sticky;
  top: 0;
  height: 100vh;
  transition: transform var(--transition-slow);
  z-index: 999;
}

.sidebar-header {
  padding: var(--space-6) var(--space-5) var(--space-5);
  border-bottom: 1px solid var(--sidebar-border);
}

.logo {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: #ffffff;
}

.logo span {
  color: var(--color-brand);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: var(--space-3) var(--space-3);
  gap: var(--space-1);
  flex: 1;
}

.sidebar-nav button {
  background: none;
  border: none;
  color: var(--sidebar-text);
  text-align: left;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
}

.sidebar-nav button:hover {
  background: var(--sidebar-hover);
  color: #ffffff;
}

.sidebar-nav button:active {
  transform: scale(0.98);
}

.sidebar-nav button:focus-visible {
  outline: 2px solid var(--color-brand-light, #a5b4fc);
  outline-offset: 2px;
}

.sidebar-nav .nav-section-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  padding: var(--space-3) var(--space-3) var(--space-1);
  margin-top: var(--space-1);
}

.sidebar-nav hr {
  border: none;
  border-top: 1px solid var(--sidebar-border);
  margin: var(--space-2) var(--space-2);
}

.sidebar-nav .danger {
  color: #fca5a5;
}

.sidebar-nav .danger:hover {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
}

/* =========================================================
   MAIN CONTENT
   ========================================================= */

.content {
  flex: 1;
  padding: var(--space-8);
  overflow-y: auto;
  min-height: 100vh;
  max-width: 100%;
}

/* =========================================================
   PAGE HEADERS
   ========================================================= */

h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
  letter-spacing: -0.025em;
}

.page-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.page-actions {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

/* =========================================================
   CARDS
   ========================================================= */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
  margin-bottom: var(--space-5);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.card.danger {
  border-color: var(--color-error);
  background: var(--color-error-light);
}

.card.info {
  border-color: var(--color-info);
  background: var(--color-info-light);
}

.card.success {
  border-color: var(--color-success);
  background: var(--color-success-light);
}

/* =========================================================
   FORM ELEMENTS
   ========================================================= */

label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}

input,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="month"],
input[type="search"],
select,
textarea {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  box-sizing: border-box;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 12px;
  padding-right: 32px;
  cursor: pointer;
}

select:hover {
  border-color: var(--color-brand);
}

select option {
  padding: 4px 8px;
}

select optgroup {
  font-weight: 600;
  color: var(--color-text-secondary);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

input:disabled,
select:disabled {
  background: var(--color-surface-hover);
  cursor: not-allowed;
  opacity: 0.6;
}

textarea {
  resize: vertical;
  min-height: 80px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

input[type="radio"],
input[type="checkbox"] {
  -webkit-appearance: auto;
  -moz-appearance: auto;
  appearance: auto;
  accent-color: var(--color-brand);
  width: auto;
  margin-right: var(--space-1);
  vertical-align: middle;
}

input[type="color"] {
  width: 48px;
  height: 36px;
  padding: 2px;
  cursor: pointer;
}

/* =========================================================
   BUTTONS
   ========================================================= */

button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.5;
}

button:active,
.btn:active {
  transform: scale(0.98);
}

button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

/* Default */
button,
.btn-default {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}

button:hover,
.btn-default:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-focus);
}

/* Secondary */
button.secondary,
.btn-secondary {
  background: var(--color-brand-light);
  border-color: var(--color-brand);
  color: var(--color-brand);
}

button.secondary:hover,
.btn-secondary:hover {
  background: var(--color-brand);
  border-color: var(--color-brand);
  color: var(--color-brand-text);
}

/* Primary */
button.primary,
.btn-primary {
  background: var(--color-brand);
  color: var(--color-brand-text);
  border-color: var(--color-brand);
}

button.primary:hover,
.btn-primary:hover {
  background: var(--color-brand-hover);
  border-color: var(--color-brand-hover);
  box-shadow: var(--shadow-md);
}

/* Danger */
button.danger,
.btn-danger {
  background: var(--color-error-light);
  border-color: #fecaca;
  color: #991b1b;
}

button.danger:hover,
.btn-danger:hover {
  background: #fee2e2;
  border-color: #fca5a5;
}

/* Small */
button.sm,
.btn-sm {
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
}

/* Action buttons — Edit */
.btn-edit {
  background: var(--color-brand-light);
  border-color: var(--color-border);
  color: var(--color-brand);
}

.btn-edit:hover {
  background: var(--color-brand);
  border-color: var(--color-brand);
  color: var(--color-brand-text);
}

/* Action buttons — Delete */
.btn-delete {
  background: var(--color-error-light);
  border-color: #fecaca;
  color: var(--color-error);
}

.btn-delete:hover {
  background: var(--color-error);
  border-color: var(--color-error);
  color: #ffffff;
}

/* Status badges */
.status-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: capitalize;
}
.status-draft { background: #f1f5f9; color: #475569; }
.status-sent { background: #dbeafe; color: #1d4ed8; }
.status-paid { background: #dcfce7; color: #16a34a; }
.status-partially_paid { background: #fef3c7; color: #d97706; }
.status-overdue { background: #fee2e2; color: #dc2626; }
.status-cancelled { background: #f1f5f9; color: #94a3b8; }

/* Form select */
.form-select {
  width: 100%;
  padding: var(--space-2);
  padding-right: 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-sm);
}
.form-select:focus {
  border-color: var(--color-brand);
  outline: none;
  box-shadow: 0 0 0 3px var(--color-brand-light);
}

/* Text button */
.btn-text {
  background: none;
  border: none;
  color: var(--color-brand);
  cursor: pointer;
  font-size: inherit;
  padding: 0.25rem 0.5rem;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.btn-text:hover {
  color: var(--color-brand-hover, #4338ca);
}

/* Icon button */
button.icon-btn {
  padding: var(--space-2);
  min-width: 44px;
  min-height: 44px;
}

/* Busy state — spinner before button label */
.btn-loading {
  pointer-events: none;
  opacity: 0.85;
}
.btn-loading::before {
  content: "";
  display: inline-block;
  width: 0.85em;
  height: 0.85em;
  margin-right: 0.5rem;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: -0.1em;
}

/* =========================================================
   TABLES
   ========================================================= */

.table-wrapper {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-5);
}

.data-table-wrapper {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: auto;
  max-height: 70vh;
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-5);
}

table,
.products-table,
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

table thead,
.products-table thead,
.data-table thead {
  background: var(--color-surface-hover);
  border-bottom: 2px solid var(--color-border);
}

table th,
.products-table th,
.data-table th {
  position: sticky;
  top: 0;
  background: var(--color-surface-hover);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

table td,
.products-table td,
.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: middle;
}

table tbody tr:last-child td,
.products-table tbody tr:last-child td,
.data-table tbody tr:last-child td {
  border-bottom: none;
}

table tbody tr:hover,
.products-table tbody tr:hover,
.data-table tbody tr:hover {
  background: var(--color-surface-hover);
}

table tfoot,
.products-table tfoot,
.data-table tfoot {
  background: var(--color-surface-hover);
  font-weight: 600;
}

table tfoot td,
.products-table tfoot td,
.data-table tfoot td {
  padding: var(--space-3) var(--space-4);
  border-top: 2px solid var(--color-border);
}

.text-right {
  text-align: right;
}

table td.text-right,
table td[style*="text-align: right"] {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* =========================================================
   TABLE FEATURES: RESIZABLE COLUMNS + ROW COUNT
   ========================================================= */

.col-resize-handle {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 6px;
  cursor: col-resize;
  user-select: none;
  z-index: 1;
  background: transparent;
  transition: background 0.15s;
}

.col-resize-handle:hover,
.col-resize-handle:active {
  background: var(--color-primary, #6366f1);
  opacity: 0.4;
}

.col-resize-handle::after {
  content: '';
  position: absolute;
  top: 0;
  right: 2px;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  opacity: 0;
  transition: opacity 0.15s;
}

.col-resize-handle:hover::after,
.col-resize-handle:active::after {
  opacity: 1;
}

table.resizing * {
  cursor: col-resize !important;
  user-select: none !important;
}

.table-row-count {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-4);
  text-align: right;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.table-wrapper .table-row-count {
  padding: var(--space-2) var(--space-4);
}

/* =========================================================
   BADGES & STATUS
   ========================================================= */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-success {
  background: var(--color-success-light);
  color: #065f46;
}

.badge-warning {
  background: var(--color-warning-light);
  color: #92400e;
}

.badge-error {
  background: var(--color-error-light);
  color: #991b1b;
}

.badge-info {
  background: var(--color-info-light);
  color: #1d4ed8;
}

.badge-default {
  background: var(--color-surface-hover);
  color: var(--color-text-secondary);
}

.badge-linked {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  border-radius: var(--radius-full);
  background: var(--color-success-light);
  color: #065f46;
  font-weight: 600;
  margin-left: var(--space-2);
}

/* =========================================================
   DASHBOARD STATS GRID
   ========================================================= */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.stat-value {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.stat-value.text-brand { color: var(--color-brand); }
.stat-value.text-success { color: var(--color-success); }
.stat-value.text-warning { color: var(--color-warning); }
.stat-value.text-error { color: var(--color-error); }

/* =========================================================
   TEXT COLOR UTILITIES (for JS inline style replacement)
   ========================================================= */

.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }
.text-success { color: var(--color-success); }
.text-info { color: var(--color-info); }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-white { color: #ffffff; }

.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-0_85 { font-size: 0.85rem; }
.text-0_8 { font-size: 0.8rem; }
.text-0_9 { font-size: 0.9rem; }
.text-0_95 { font-size: 0.95rem; }

.text-gender-male { color: var(--color-gender-male); }
.text-gender-female { color: var(--color-gender-female); }
.text-gender-unisex { color: var(--color-gender-unisex); }

/* Gender badge style (used by products.js) */
.gender-badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: #fff;
}
.gender-badge.male { background: var(--color-gender-male); }
.gender-badge.female { background: var(--color-gender-female); }
.gender-badge.unisex { background: var(--color-gender-unisex); }

/* Stock status indicators */
.stock-status-out { color: var(--color-error); font-weight: 600; }
.stock-status-low { color: var(--color-warning); font-weight: 600; }
.stock-status-ok { color: var(--color-success); }

/* BOM stock info */
.bom-stock-out { color: var(--color-error); font-size: 0.8rem; }
.bom-stock-low { color: var(--color-warning); font-size: 0.8rem; }
.bom-stock-ok { color: var(--color-success); font-size: 0.8rem; }

/* =========================================================
   LISTS
   ========================================================= */

ul, ol {
  list-style: none;
}

ul.list-styled {
  list-style: disc;
  padding-left: var(--space-5);
}

ul.list-styled li {
  padding: var(--space-1) 0;
  line-height: 1.7;
}

/* =========================================================
   EDITOR PANEL
   ========================================================= */

.editor-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-top: var(--space-4);
  box-shadow: var(--shadow-md);
}

.editor-panel h3 {
  margin-bottom: var(--space-4);
}

.editor-panel label {
  margin-top: var(--space-3);
}

/* =========================================================
   MODALS
   ========================================================= */

.modal,
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn var(--transition-base);
}

.modal-content {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  min-width: 320px;
  max-width: 480px;
  width: 90%;
  box-shadow: var(--shadow-xl);
  animation: slideUp var(--transition-slow);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =========================================================
   TOAST NOTIFICATIONS
   ========================================================= */

.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 400px;
}

.toast {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  animation: slideIn var(--transition-slow);
}

.toast-success { border-left: 4px solid var(--color-success); }
.toast-error { border-left: 4px solid var(--color-error); }
.toast-warning { border-left: 4px solid var(--color-warning); }
.toast-info { border-left: 4px solid var(--color-info); }

.toast-close {
  margin-left: auto;
  background: none;
  border: none;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 0 0 0 8px;
  color: var(--color-text-secondary);
  min-width: auto;
  min-height: auto;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* =========================================================
   LOADING SPINNER
   ========================================================= */

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  gap: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-brand);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* =========================================================
   EMPTY STATE
   ========================================================= */

.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--color-text-muted);
}

.empty-state p {
  font-size: var(--text-base);
  margin-top: var(--space-2);
}

/* =========================================================
   BANNER / ALERT MESSAGES
   ========================================================= */

.banner {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.banner-info {
  background: var(--color-info-light);
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

.banner-success {
  background: var(--color-success-light);
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.banner-warning {
  background: var(--color-warning-light);
  color: #92400e;
  border: 1px solid #fde68a;
}

.banner-error {
  background: var(--color-error-light);
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* =========================================================
   LOGIN PAGE
   ========================================================= */

.content form {
  max-width: 400px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}

.content form label {
  margin-bottom: var(--space-3);
}

.content form button[type="submit"] {
  width: 100%;
  margin-top: var(--space-4);
}

/* =========================================================
   INLINE FORM GROUPS
   ========================================================= */

.form-row {
  display: flex;
  gap: var(--space-3);
  align-items: flex-end;
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.form-row label {
  flex: 1;
  min-width: 120px;
}

.form-row input,
.form-row select {
  flex: 2;
  min-width: 150px;
}

/* =========================================================
   VERTICAL FORM GROUPS (label + input stacked)
   ========================================================= */

.form-group {
  margin-bottom: var(--space-4);
}

.form-group label {
  margin-bottom: var(--space-1);
}

.form-group input,
.form-group select {
  width: 100%;
}

.form-group-inline {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  margin-bottom: var(--space-4);
}

.form-group-inline .form-group {
  flex: 1;
  margin-bottom: 0;
}

/* =========================================================
   FORM VALIDATION STATES
   ========================================================= */

input.is-invalid,
select.is-invalid,
textarea.is-invalid,
input.invalid,
select.invalid,
textarea.invalid {
  border-color: var(--color-error) !important;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15) !important;
}

input.is-valid,
select.is-valid,
textarea.is-valid {
  border-color: var(--color-success) !important;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15) !important;
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  margin-top: var(--space-1);
}

/* =========================================================
   SEARCHABLE DROPDOWN
========================================================= */

.search-dropdown {
  position: relative;
}

.search-dropdown input {
  width: 100%;
}

.search-dropdown-list {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 220px;
  overflow-y: auto;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #d1d5db);
  border-radius: 0 0 6px 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  z-index: 100;
  display: none;
}

.search-dropdown-list.open {
  display: block;
}

.search-dropdown-item {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  border-bottom: 1px solid var(--color-border, #f0f0f0);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.search-dropdown-item:hover,
.search-dropdown-item.active {
  background: var(--color-brand-light, #eef2ff);
}

.search-dropdown-item .price {
  color: var(--color-text-secondary, #64748b);
  font-size: var(--text-sm);
}

.search-dropdown-empty {
  padding: 0.75rem;
  color: var(--color-text-secondary, #64748b);
  text-align: center;
}

.form-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

/* =========================================================
   CODE / MONOSPACE
   ========================================================= */

code {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background: var(--color-surface-hover);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

/* =========================================================
   REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .stat-card {
    transition: none;
  }

  .stat-card:hover {
    transform: none;
  }

  .modal-content {
    animation: none;
  }

  .toast {
    animation: none;
  }
}

/* =========================================================
   RESPONSIVE BREAKPOINTS
   ========================================================= */

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex;
  }

  .sidebar {
    position: fixed;
    transform: translateX(-100%);
    top: 0;
    left: 0;
    z-index: 999;
  }

  .sidebar.mobile-open {
    transform: translateX(0);
  }

  .content {
    padding: var(--space-5) var(--space-4);
    padding-top: var(--space-16);
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .table-wrapper,
  .data-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  table,
  .products-table,
  .data-table {
    font-size: var(--text-xs);
    min-width: 600px;
  }

  table th,
  .products-table th,
  .data-table th,
  table td,
  .products-table td,
  .data-table td {
    padding: var(--space-2) var(--space-2);
  }

  button.icon-btn {
    min-width: 44px;
    min-height: 44px;
  }
}

/* =========================================================
   TAGS (clickable dashboard tags)
   ========================================================= */

.tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  margin: 0.15rem 0.25rem;
  border-radius: 4px;
  font-size: var(--text-sm);
  white-space: nowrap;
}

.tag-clickable {
  cursor: pointer;
  background: var(--color-surface-hover, #f1f5f9);
  border: 1px solid var(--color-border, #d1d5db);
  transition: background 0.15s, box-shadow 0.15s;
}

.tag-clickable:hover {
  background: var(--color-brand-light, #eef2ff);
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

/* =========================================================
   HINTS
   ========================================================= */

.hint {
  font-size: var(--text-sm);
  color: var(--color-text-secondary, #64748b);
  padding: 0.35rem 0.6rem;
  margin: 0.35rem 0 0.5rem 0;
  background: var(--color-brand-light, #eef2ff);
  border-left: 3px solid var(--color-brand, #6366f1);
  border-radius: 0 4px 4px 0;
}

.hint-toggle {
  font-size: var(--text-sm);
  cursor: pointer;
  color: var(--color-text-secondary, #64748b);
  user-select: none;
}

.hint-toggle:hover {
  color: var(--color-brand, #6366f1);
}

/* =========================================================
   RECALCULATE ALL BUTTON
   ========================================================= */

.recalc-all-btn {
  margin-left: 0.5rem;
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .content {
    padding: var(--space-4) var(--space-3);
    padding-top: var(--space-16);
  }

  .modal-content {
    padding: var(--space-4);
    min-width: auto;
  }
}

/* =========================================================
   RECEIPT PRINT STYLES
   ========================================================= */

/* Print styles */
@media print {
  .modal-overlay, .modal { background: none !important; }
  .sidebar, .mobile-menu-btn, .mobile-overlay, .hint-toggle, .toast-container, #toast-container { display: none !important; }
  .content { margin-left: 0 !important; padding: 0 !important; }
  .table-wrapper { border: 1px solid #ccc; break-inside: avoid; }
  .products-table th { background: #f5f5f5 !important; color: #000 !important; }
  .stats-grid { break-inside: avoid; }
  .card { break-inside: avoid; box-shadow: none; border: 1px solid #ddd; }
  .stat-card { break-inside: avoid; }
}

/* =========================================================
   BATCH SELECTION (sales page)
========================================================= */

#batch-bar {
  display: none;
  align-items: center;
  gap: 0.5rem;
}

#batch-bar.show {
  display: inline-flex;
}

input[type="checkbox"] {
  cursor: pointer;
}

.sales-checkbox {
  width: 16px;
  height: 16px;
}

#select-all-sales {
  width: 16px;
  height: 16px;
}

/* =========================================================
   CATEGORY BADGES (raw materials)
   ========================================================= */

.category-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}
.category-fragrance { background: #e8f5e9; color: #2e7d32; }
.category-carrier { background: #e3f2fd; color: #1565c0; }
.category-packaging { background: #fff3e0; color: #e65100; }
.category-label { background: #fce4ec; color: #c62828; }
.category-other { background: #f3e5f5; color: #6a1b9a; }

.refill-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.7rem;
  font-weight: 600;
  background: #f3e5f5;
  color: #7b1fa2;
  margin-left: 4px;
  vertical-align: middle;
}