/**
 * Senseye Internal Platform - Shared CSS Framework
 *
 * This CSS provides consistent styling across all products on the platform.
 * Products should use these design tokens and component styles for a
 * unified look and feel.
 *
 * Contents:
 * 1. CSS Custom Properties (Design Tokens)
 * 2. Reset & Base Styles
 * 3. Typography
 * 4. Layout Utilities
 * 5. Components
 * 6. Forms
 * 7. Navigation
 * 8. Cards & Containers
 * 9. Tables
 * 10. Alerts & Messages
 * 11. Buttons
 * 12. Product Catalog
 */

/* ========================================
   1. CSS Custom Properties (Design Tokens)
   ======================================== */

:root {
  /* Brand Colors */
  --color-primary: #2563eb;        /* Blue - primary actions */
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-secondary: #64748b;      /* Slate - secondary elements */
  --color-secondary-hover: #475569;

  /* Semantic Colors */
  --color-success: #16a34a;
  --color-success-light: #dcfce7;
  --color-warning: #ca8a04;
  --color-warning-light: #fef9c3;
  --color-error: #dc2626;
  --color-error-light: #fee2e2;
  --color-info: #0284c7;
  --color-info-light: #e0f2fe;

  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;
  --color-black: #000000;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --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, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

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

  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;

  /* Layout */
  --container-max-width: 1200px;
  --sidebar-width: 250px;
  --header-height: 60px;
}

/* ========================================
   2. Reset & Base Styles
   ======================================== */

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background-color: var(--color-gray-50);
}

/* ========================================
   3. Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-4);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin: 0 0 var(--space-4);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

code, pre {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

code {
  background: var(--color-gray-100);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

pre {
  background: var(--color-gray-800);
  color: var(--color-gray-100);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}

/* ========================================
   4. Layout Utilities
   ======================================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Spacing utilities */
.m-0 { margin: 0; }
.m-1 { margin: var(--space-1); }
.m-2 { margin: var(--space-2); }
.m-4 { margin: var(--space-4); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.p-0 { padding: 0; }
.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }

/* Text utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-muted { color: var(--color-gray-500); }
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

/* Width/height utilities */
.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }

/* ========================================
   5. Components
   ======================================== */

/* ========================================
   6. Forms
   ======================================== */

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

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-input.error {
  border-color: var(--color-error);
}

.form-help {
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

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

/* ========================================
   7. Navigation & Header
   ======================================== */

/* Main Header */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: var(--header-height);
}

/* Brand */
.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-gray-900);
}

.header-brand:hover {
  text-decoration: none;
  color: var(--color-gray-900);
}

.header-brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  color: var(--color-white);
}

.header-brand-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

/* Navigation Links */
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--color-gray-600);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.header-nav-link:hover {
  color: var(--color-gray-900);
  background: var(--color-gray-100);
  text-decoration: none;
}

.header-nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.header-nav-link svg {
  flex-shrink: 0;
}

/* User Menu */
.header-user {
  position: relative;
}

.header-user-button {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1);
  background: none;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.header-user-button:hover {
  background: var(--color-gray-100);
}

.header-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.header-user-avatar-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.header-user-caret {
  color: var(--color-gray-500);
  transition: transform var(--transition-fast);
}

.header-user-button[aria-expanded="true"] .header-user-caret {
  transform: rotate(180deg);
}

/* User Dropdown */
.header-user-dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  min-width: 280px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

.header-user-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header-user-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
}

.header-user-dropdown-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.header-user-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.header-user-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-user-email {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-user-dropdown-divider {
  height: 1px;
  background: var(--color-gray-200);
  margin: 0;
}

.header-user-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-gray-700);
  text-decoration: none;
  transition: background var(--transition-fast);
}

.header-user-dropdown-item:hover {
  background: var(--color-gray-50);
  text-decoration: none;
}

.header-user-dropdown-item-danger {
  color: var(--color-error);
}

.header-user-dropdown-item-danger:hover {
  background: var(--color-error-light);
}

/* Mobile Toggle */
.header-mobile-toggle {
  display: none;
  padding: var(--space-2);
  background: none;
  border: none;
  color: var(--color-gray-600);
  cursor: pointer;
  border-radius: var(--radius-md);
}

.header-mobile-toggle:hover {
  background: var(--color-gray-100);
}

/* Flash Messages Container */
.flash-container {
  max-width: var(--container-max-width);
  margin: var(--space-4) auto 0;
  padding: 0 var(--space-4);
}

/* Alert close button */
.alert-close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-3);
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  line-height: 1;
  color: inherit;
  opacity: 0.6;
  cursor: pointer;
}

.alert-close:hover {
  opacity: 1;
}

.alert {
  position: relative;
}

/* Footer */
.footer {
  padding: var(--space-6) 0;
  margin-top: auto;
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-white);
}

.footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.footer-text {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

.footer-version {
  color: var(--color-gray-400);
}

/* Legacy navbar styles for backwards compat */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--space-6);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  text-decoration: none;
}

.navbar-brand:hover {
  color: var(--color-gray-900);
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--color-gray-600);
  font-weight: var(--font-weight-medium);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-gray-900);
  background-color: var(--color-gray-100);
  text-decoration: none;
}

.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Sidebar */
.sidebar {
  position: fixed;
  left: 0;
  top: var(--header-height);
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-white);
  border-right: 1px solid var(--color-gray-200);
  padding: var(--space-4);
  overflow-y: auto;
}

.sidebar-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar-nav-item {
  margin-bottom: var(--space-1);
}

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  color: var(--color-gray-600);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.sidebar-nav-link:hover {
  color: var(--color-gray-900);
  background-color: var(--color-gray-100);
  text-decoration: none;
}

.sidebar-nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Main content area */
.main-content {
  margin-left: var(--sidebar-width);
  padding: var(--space-6);
  min-height: calc(100vh - var(--header-height));
}

.main-content.no-sidebar {
  margin-left: 0;
}

/* ========================================
   8. Cards & Containers
   ======================================== */

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
}

.card-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
}

.card-title {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-gray-50);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ========================================
   9. Tables
   ======================================== */

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

.table th,
.table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-gray-200);
}

.table th {
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-600);
  background: var(--color-gray-50);
}

.table tbody tr:hover {
  background: var(--color-gray-50);
}

/* ========================================
   10. Alerts & Messages
   ======================================== */

.alert {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.alert-success {
  background: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.alert-error {
  background: var(--color-error-light);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.alert-warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.alert-info {
  background: var(--color-info-light);
  color: var(--color-info);
  border: 1px solid var(--color-info);
}

/* ========================================
   11. Buttons
   ======================================== */

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

.btn:hover {
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

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

.btn-secondary {
  background: var(--color-white);
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}

.btn-secondary:hover {
  background: var(--color-gray-50);
  color: var(--color-gray-900);
}

.btn-success {
  background: var(--color-success);
  color: var(--color-white);
}

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

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
}

/* ========================================
   12. Product Catalog
   ======================================== */

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.product-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
  text-decoration: none;
  color: inherit;
}

.product-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
}

.product-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 120px;
  font-size: 48px;
  background: var(--color-gray-100);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.product-card-body {
  padding: var(--space-4);
  flex: 1;
}

.product-card-title {
  margin: 0 0 var(--space-2);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
}

.product-card-description {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.product-card-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-gray-100);
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
}

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

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

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

.badge-secondary {
  background: var(--color-gray-200);
  color: var(--color-gray-700);
}

/* ========================================
   13. Toast Notifications
   ======================================== */

/* Toast Container - positioned top-right */
.toast-container {
  position: fixed;
  top: calc(var(--header-height) + var(--space-4));
  right: var(--space-4);
  z-index: var(--z-tooltip);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: min(400px, calc(100vw - var(--space-8)));
  pointer-events: none;
}

/* Individual Toast */
.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-200);
  pointer-events: auto;
  animation: toastSlideIn 0.3s ease-out;
  position: relative;
  overflow: hidden;
}

.toast.toast-dismissing {
  animation: toastSlideOut 0.2s ease-in forwards;
}

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

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

/* Toast Icon */
.toast-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
}

.toast-success .toast-icon {
  color: var(--color-success);
}

.toast-error .toast-icon {
  color: var(--color-error);
}

.toast-warning .toast-icon {
  color: var(--color-warning);
}

.toast-info .toast-icon {
  color: var(--color-info);
}

/* Toast Content */
.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin: 0 0 var(--space-1);
}

.toast-message {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  margin: 0;
  line-height: var(--line-height-normal);
}

/* Toast Close Button */
.toast-close {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-gray-400);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  padding: 0;
}

.toast-close:hover {
  color: var(--color-gray-600);
  background: var(--color-gray-100);
}

/* Toast Progress Bar (auto-dismiss timer) */
.toast-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--color-primary);
  border-radius: 0 0 0 var(--radius-lg);
  animation: toastProgress linear forwards;
}

.toast-success .toast-progress {
  background: var(--color-success);
}

.toast-error .toast-progress {
  background: var(--color-error);
}

.toast-warning .toast-progress {
  background: var(--color-warning);
}

.toast-info .toast-progress {
  background: var(--color-info);
}

@keyframes toastProgress {
  from {
    width: 100%;
  }
  to {
    width: 0%;
  }
}

/* Toast paused state (on hover) */
.toast:hover .toast-progress {
  animation-play-state: paused;
}

/* ========================================
   14. Notification Tray
   ======================================== */

/* Notification Bell Button */
.notification-bell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  border-radius: var(--radius-full);
  color: var(--color-gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.notification-bell:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-900);
}

.notification-bell svg {
  width: 20px;
  height: 20px;
}

/* Notification Badge (unread count) */
.notification-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 16px;
  height: 16px;
  padding: 0 var(--space-1);
  background: var(--color-error);
  color: var(--color-white);
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.notification-badge:empty,
.notification-badge[data-count="0"] {
  display: none;
}

/* Notification Dropdown */
.notification-dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  width: 360px;
  max-height: 480px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
  display: flex;
  flex-direction: column;
}

.notification-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Notification Dropdown Header */
.notification-dropdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
}

.notification-dropdown-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin: 0;
}

.notification-clear-btn {
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.notification-clear-btn:hover {
  background: var(--color-primary-light);
}

/* Notification List */
.notification-list {
  flex: 1;
  overflow-y: auto;
  max-height: 400px;
}

/* Individual Notification Item */
.notification-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-gray-100);
  transition: background var(--transition-fast);
}

.notification-item:hover {
  background: var(--color-gray-50);
}

.notification-item:last-child {
  border-bottom: none;
}

.notification-item-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-gray-100);
}

.notification-item-icon.success {
  background: var(--color-success-light);
  color: var(--color-success);
}

.notification-item-icon.error {
  background: var(--color-error-light);
  color: var(--color-error);
}

.notification-item-icon.warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.notification-item-icon.info {
  background: var(--color-info-light);
  color: var(--color-info);
}

.notification-item-content {
  flex: 1;
  min-width: 0;
}

.notification-item-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-900);
  margin: 0 0 var(--space-1);
}

.notification-item-message {
  font-size: var(--font-size-xs);
  color: var(--color-gray-600);
  margin: 0 0 var(--space-1);
  line-height: var(--line-height-normal);
}

.notification-item-time {
  font-size: var(--font-size-xs);
  color: var(--color-gray-400);
}

.notification-item-dismiss {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-gray-400);
  cursor: pointer;
  border-radius: var(--radius-sm);
  opacity: 0;
  transition: all var(--transition-fast);
}

.notification-item:hover .notification-item-dismiss {
  opacity: 1;
}

.notification-item-dismiss:hover {
  color: var(--color-gray-600);
  background: var(--color-gray-100);
}

/* Empty State */
.notification-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-4);
  color: var(--color-gray-400);
}

.notification-empty svg {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-3);
  opacity: 0.5;
}

.notification-empty p {
  font-size: var(--font-size-sm);
  margin: 0;
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
  :root {
    --sidebar-width: 0;
  }

  .sidebar {
    display: none;
  }

  .main-content {
    margin-left: 0;
  }

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }

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