/* Root Variables for Color System */
:root {
  --primary: #007aff;
  --primary-dark: #0062cc;
  --secondary: #e0e0e0;
  --secondary-dark: #d1d1d1;
  --text: #1c2526;
  --text-muted: #6e6e73;
  --background: #f5f5f7;
  --card-bg: #fff;
  --border: #d2d2d7;
  --shadow: rgba(0, 0, 0, 0.05);
  --shadow-dark: rgba(0, 0, 0, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.8);
  --alert-success: #34c759;
  --alert-error: #ff3b30;
  --progress-bg: #e0e0e0;
  --badge-bg: #ff3b30;
  --spinner: #007aff;
  --toast-bg: #333;
  --chart-bar: #007aff;
  --chart-pie1: #34c759;
  --chart-pie2: #ff9500;
  --avatar-bg: #d1d1d1;
  --tag-bg: #e0e0e0;
  --step-active: #007aff;
  --step-inactive: #d1d1d1;
  --rating-star: #ff9500;
  --rating-star-inactive: #d1d1d1;
}

/* Theme Variants */
body.theme-light {
  --primary: #007aff;
  --background: #f5f5f7;
  --card-bg: #fff;
  --text: #1c2526;
  --border: #d2d2d7;
  --shadow: rgba(0, 0, 0, 0.05);
}

body.theme-dark {
  --primary: #0a84ff;
  --primary-dark: #0071e3;
  --secondary: #2c2c2e;
  --secondary-dark: #3a3a3c;
  --text: #f5f5f5;
  --text-muted: #8e8e93;
  --background: #1c2526;
  --card-bg: #2c2c2e;
  --border: #3a3a3c;
  --shadow: rgba(0, 0, 0, 0.2);
  --shadow-dark: rgba(0, 0, 0, 0.4);
  --glass-bg: rgba(44, 44, 46, 0.8);
  --alert-success: #30d158;
  --alert-error: #ff453a;
  --progress-bg: #3a3a3c;
  --badge-bg: #ff453a;
  --spinner: #0a84ff;
  --toast-bg: #444;
  --chart-bar: #0a84ff;
  --chart-pie1: #30d158;
  --chart-pie2: #ff9500;
  --avatar-bg: #3a3a3c;
  --tag-bg: #2c2c2e;
  --step-active: #0a84ff;
  --step-inactive: #3a3a3c;
  --rating-star-inactive: #3a3a3c;
}

body.theme-high-contrast {
  --primary: #00f;
  --background: #000;
  --card-bg: #fff;
  --text: #fff;
  --text-muted: #ccc;
  --border: #fff;
  --shadow: rgba(255, 255, 255, 0.2);
  --shadow-dark: rgba(255, 255, 255, 0.4);
  --glass-bg: rgba(255, 255, 255, 0.9);
  --alert-success: #0f0;
  --alert-error: #f00;
  --progress-bg: #666;
  --badge-bg: #f00;
  --spinner: #00f;
  --toast-bg: #555;
  --chart-bar: #00f;
  --chart-pie1: #0f0;
  --chart-pie2: #ff0;
  --avatar-bg: #666;
  --tag-bg: #999;
  --step-active: #00f;
  --step-inactive: #666;
  --rating-star-inactive: #666;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background-color: var(--background);
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

.rounded {
  border-radius: 12px;
}

.shadow {
  box-shadow: 0 4px 6px var(--shadow), 0 1px 3px var(--shadow-dark);
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Flex and Grid Utilities */
.flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.flex-center {
  justify-content: center;
  align-items: center;
}

.grid {
  display: grid;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* Animation Library */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.animate-fade { animation: fadeIn 0.5s ease forwards; }
.animate-slide { animation: slideIn 0.5s ease forwards; }
.animate-bounce { animation: bounce 1s ease infinite; }
.animate-pulse { animation: pulse 1.5s ease infinite; }

/* Lazy Load Styles */
.lazy-load {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy-load.loaded {
  opacity: 1;
}

/* Components */

/* Buttons */
.btn {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: 10px;
  background-color: var(--primary);
  color: #fff;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

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

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

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

.btn-secondary:hover {
  background-color: var(--secondary-dark);
}

/* Cards */
.card {
  background-color: var(--card-bg);
  border-radius: 16px;
  padding: 20px;
  margin: 16px 0;
  box-shadow: 0 2px 4px var(--shadow);
  transition: box-shadow 0.2s ease;
}

.card:hover {
  box-shadow: 0 6px 12px var(--shadow-dark);
}

/* Inputs */
.input {
  display: block;
  width: 100%;
  padding: 10px 14px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background-color: var(--card-bg);
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.2);
}

/* Form Validation Styles */
.input.invalid {
  border-color: var(--alert-error);
  box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.2);
}

.input.valid {
  border-color: var(--alert-success);
  box-shadow: 0 0 0 3px rgba(52, 199, 89, 0.2);
}

.form-error {
  color: var(--alert-error);
  font-size: 12px;
  margin-top: 4px;
  display: none;
}

.form-error.active {
  display: block;
}

.form-success {
  color: var(--alert-success);
  font-size: 12px;
  margin-top: 4px;
  display: none;
}

.form-success.active {
  display: block;
}

/* Navigation Bar */
.navbar {
  background-color: var(--card-bg);
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar .nav-list {
  list-style: none;
  display: flex;
  gap: 24px;
}

.navbar .nav-list a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

.navbar .nav-list a:hover {
  color: var(--primary);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 2000;
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--card-bg);
  border-radius: 16px;
  padding: 24px;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 10px 20px var(--shadow-dark);
}

.modal-confirm .modal-content {
  max-width: 400px;
  text-align: center;
}

.modal-form .modal-content {
  max-width: 600px;
}

/* Toggle Switch */
.toggle {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 20px;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--secondary);
  border-radius: 20px;
  transition: background-color 0.2s ease;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.toggle input:checked + .toggle-slider {
  background-color: var(--primary);
}

.toggle input:checked + .toggle-slider:before {
  transform: translateX(20px);
}

/* Slider */
.slider {
  width: 100%;
  height: 6px;
  background: var(--secondary);
  border-radius: 3px;
  appearance: none;
  outline: none;
}

.slider::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s ease;
}

.slider::-webkit-slider-thumb:hover {
  background: var(--primary-dark);
}

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: 10px;
  margin: 16px 0;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.alert-success {
  background-color: var(--alert-success);
  color: #fff;
}

.alert-error {
  background-color: var(--alert-error);
  color: #fff;
}

.alert .close {
  background: none;
  border: none;
  color: inherit;
  font-size: 18px;
  cursor: pointer;
}

/* Tooltips */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltip-text {
  visibility: hidden;
  background-color: var(--text);
  color: #fff;
  text-align: center;
  padding: 6px 12px;
  border-radius: 6px;
  position: absolute;
  z-index: 1;
  font-size: 12px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.tooltip .tooltip-text[data-position="top"] {
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
}

.tooltip .tooltip-text[data-position="bottom"] {
  top: 125%;
  left: 50%;
  transform: translateX(-50%);
}

.tooltip .tooltip-text[data-position="left"] {
  top: 50%;
  right: 125%;
  transform: translateY(-50%);
}

.tooltip .tooltip-text[data-position="right"] {
  top: 50%;
  left: 125%;
  transform: translateY(-50%);
}

.tooltip:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}

/* Dropdown */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-btn {
  background-color: var(--secondary);
  padding: 8px 16px;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.dropdown-btn:hover {
  background-color: var(--secondary-dark);
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: var(--card-bg);
  min-width: 160px;
  border-radius: 10px;
  box-shadow: 0 4px 8px var(--shadow-dark);
  z-index: 1;
}

.dropdown-content a {
  color: var(--text);
  padding: 8px 16px;
  text-decoration: none;
  display: block;
  transition: background-color 0.2s ease;
}

.dropdown-content a:hover {
  background-color: var(--secondary);
}

.dropdown.active .dropdown-content {
  display: block;
}

/* Progress Bar */
.progress {
  width: 100%;
  height: 8px;
  background-color: var(--progress-bg);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--primary);
  width: 0;
  transition: width 0.3s ease;
}

/* Accordion */
.accordion {
  margin: 16px 0;
}

.accordion-item {
  background-color: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 8px;
}

.accordion-header {
  padding: 12px 16px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 500;
  transition: background-color 0.2s ease;
}

.accordion-header:hover {
  background-color: var(--secondary);
}

.accordion-content {
  max-height: 0;
  padding: 0 16px;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.accordion-item.active .accordion-content {
  max-height: 200px; /* Adjust based on content */
  padding: 12px 16px;
}

/* Badge */
.badge {
  display: inline-block;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  background-color: var(--badge-bg);
  border-radius: 12px;
  margin-left: 8px;
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  margin: 16px 0;
}

.table th,
.table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

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

.table th.sortable {
  cursor: pointer;
  position: relative;
}

.table th.sortable::after {
  content: "↕";
  margin-left: 8px;
  font-size: 12px;
}

.table th.sort-asc::after {
  content: "↑";
}

.table th.sort-desc::after {
  content: "↓";
}

.table tr:last-child td {
  border-bottom: none;
}

.table-striped tr:nth-child(even) {
  background-color: var(--secondary);
}

.table-hover tr:hover {
  background-color: var(--secondary-dark);
}

/* Pagination */
.pagination {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 16px 0;
}

.pagination a {
  padding: 8px 12px;
  text-decoration: none;
  color: var(--text);
  background-color: var(--card-bg);
  border-radius: 8px;
  transition: background-color 0.2s ease;
}

.pagination a:hover {
  background-color: var(--secondary);
}

.pagination a.active {
  background-color: var(--primary);
  color: #fff;
}

/* Tabs */
.tabs {
  margin: 16px 0;
}

.tab-list {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.tab-btn {
  padding: 10px 20px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-weight: 500;
  cursor: pointer;
  transition: color 0.2s ease, border-bottom 0.2s ease;
}

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

.tab-btn.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
}

.tab-content {
  display: none;
  padding: 16px;
  background-color: var(--card-bg);
  border-radius: 0 0 10px 10px;
}

.tab-content.active {
  display: block;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  gap: 8px;
  margin: 16px 0;
}

.breadcrumbs a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

.breadcrumbs a:hover {
  color: var(--primary);
}

.breadcrumbs span {
  color: var(--text);
}

.breadcrumbs .separator {
  color: var(--text-muted);
}

/* Spinner */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--secondary);
  border-top: 3px solid var(--spinner);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: inline-block;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Form Group */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group .input {
  margin-bottom: 0;
}

/* Carousel */
.carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 10px;
  margin: 16px 0;
}

.carousel-inner {
  display: flex;
  transition: transform 0.5s ease;
}

.carousel-item {
  min-width: 100%;
  box-sizing: border-box;
  padding: 20px;
  background-color: var(--card-bg);
  text-align: center;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 8px;
  cursor: pointer;
  border-radius: 50%;
}

.carousel-btn.prev {
  left: 10px;
}

.carousel-btn.next {
  right: 10px;
}

/* Search Bar */
.search-bar {
  position: relative;
  margin: 16px 0;
}

.search-bar .input {
  padding-left: 40px;
}

.search-bar::before {
  content: "🔍";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: -250px;
  width: 250px;
  height: 100%;
  background-color: var(--card-bg);
  padding: 20px;
  transition: left 0.3s ease;
  z-index: 1500;
  box-shadow: 0 0 10px var(--shadow-dark);
}

.sidebar.active {
  left: 0;
}

.sidebar-toggle {
  position: fixed;
  top: 20px;
  left: 20px;
  background-color: var(--primary);
  color: #fff;
  border: none;
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
  z-index: 1600;
  transition: background-color 0.2s ease;
}

.sidebar-toggle:hover {
  background-color: var(--primary-dark);
}

/* Toasts */
.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: var(--toast-bg);
  color: #fff;
  padding: 12px 20px;
  border-radius: 10px;
  box-shadow: 0 4px 8px var(--shadow-dark);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 2000;
}

.toast.active {
  opacity: 1;
}

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

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

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

.toast-stack {
  bottom: calc(20px + var(--toast-index) * 60px);
}

/* Datepicker */
.datepicker {
  position: relative;
  display: inline-block;
}

.datepicker .input {
  cursor: pointer;
}

.datepicker-calendar {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--card-bg);
  border-radius: 10px;
  padding: 10px;
  box-shadow: 0 4px 8px var(--shadow-dark);
  z-index: 1000;
  width: 280px;
}

.datepicker-calendar.active {
  display: block;
}

.datepicker-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.datepicker-btn {
  background: none;
  border: none;
  font-size: 16px;
  cursor: pointer;
  color: var(--text-muted);
  padding: 5px;
}

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

.datepicker-month-year {
  font-weight: 500;
}

.datepicker-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
}

.datepicker-day {
  text-align: center;
  padding: 8px;
  cursor: pointer;
  border-radius: 5px;
  transition: background-color 0.2s ease;
}

.datepicker-day:hover {
  background-color: var(--secondary);
}

.datepicker-day.selected {
  background-color: var(--primary);
  color: #fff;
}

.datepicker-day.disabled {
  color: var(--text-muted);
  cursor: not-allowed;
}

/* Charts */
.chart {
  margin: 16px 0;
  position: relative;
}

.chart-bar {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  height: 200px;
  position: relative;
}

.chart-bar-item {
  flex: 1;
  background-color: var(--chart-bar);
  border-radius: 5px;
  transition: height 0.3s ease;
  position: relative;
}

.chart-bar-item::after {
  content: attr(data-label);
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  color: var(--text);
}

.chart-pie {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  position: relative;
}

.chart-legend {
  margin-top: 10px;
  display: flex;
  gap: 16px;
}

.chart-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chart-legend-color {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

/* Avatar */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--avatar-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Tag */
.tag {
  display: inline-block;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 500;
  background-color: var(--tag-bg);
  color: var(--text);
  border-radius: 6px;
  margin: 0 4px 4px 0;
}

/* Divider */
.divider {
  height: 1px;
  background-color: var(--border);
  margin: 16px 0;
}

/* File Upload */
.file-upload {
  position: relative;
  display: inline-block;
  margin: 16px 0;
}

.file-upload input[type="file"] {
  display: none;
}

.file-upload-label {
  display: inline-block;
  padding: 10px 16px;
  background-color: var(--secondary);
  color: var(--text);
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.file-upload-label:hover {
  background-color: var(--secondary-dark);
}

.file-upload-text {
  margin-left: 8px;
  color: var(--text-muted);
}

/* Steps */
.steps {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 16px 0;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
}

.step-circle {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--step-inactive);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  transition: background-color 0.2s ease;
}

.step.active .step-circle {
  background-color: var(--step-active);
  color: #fff;
}

.step-line {
  height: 2px;
  background-color: var(--step-inactive);
  flex-grow: 1;
  margin: 0 8px;
}

.step.active ~ .step .step-line {
  background-color: var(--step-inactive);
}

.step.active .step-line {
  background-color: var(--step-active);
}

/* Tree View */
.tree-view {
  margin: 16px 0;
}

.tree-view ul {
  list-style: none;
}

.tree-view li {
  padding: 8px 0;
  position: relative;
}

.tree-view .tree-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
}

.tree-view .tree-toggle::before {
  content: "▶";
  margin-right: 8px;
  font-size: 12px;
  transition: transform 0.2s ease;
}

.tree-view .tree-toggle.active::before {
  transform: rotate(90deg);
}

.tree-view ul ul {
  display: none;
  margin-left: 20px;
}

.tree-view .tree-toggle.active + ul {
  display: block;
}

/* Context Menu */
.context-menu {
  position: fixed;
  background-color: var(--card-bg);
  border-radius: 10px;
  box-shadow: 0 4px 8px var(--shadow-dark);
  display: none;
  z-index: 3000;
}

.context-menu.active {
  display: block;
}

.context-menu a {
  display: block;
  padding: 8px 16px;
  color: var(--text);
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.context-menu a:hover {
  background-color: var(--secondary);
}

/* Autocomplete */
.autocomplete {
  position: relative;
  margin: 16px 0;
}

.autocomplete-list {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--card-bg);
  border-radius: 10px;
  box-shadow: 0 4px 8px var(--shadow-dark);
  max-height: 200px;
  overflow-y: auto;
  display: none;
  z-index: 1000;
}

.autocomplete-list.active {
  display: block;
}

.autocomplete-item {
  padding: 8px 14px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.autocomplete-item:hover {
  background-color: var(--secondary);
}

/* Rating Stars */
.rating {
  display: flex;
  gap: 4px;
  margin: 16px 0;
}

.rating-star {
  font-size: 20px;
  color: var(--rating-star-inactive);
  cursor: pointer;
  transition: color 0.2s ease;
}

.rating-star.active {
  color: var(--rating-star);
}

/* Image Gallery */
.image-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin: 16px 0;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 2px 4px var(--shadow);
  transition: transform 0.2s ease;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

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

.gallery-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-overlay span {
  color: #fff;
  font-weight: 500;
}

/* Theme Switcher */
.theme-switcher {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 8px;
  border-radius: 10px;
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  z-index: 2000;
}

/* Typography */
.heading {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
}

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

/* Responsive Adjustments */
@media (max-width: 768px) {
  .container {
    padding: 0 12px;
  }

  .btn, .dropdown-btn {
    padding: 6px 12px;
  }

  .card {
    padding: 16px;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .table {
    display: block;
    overflow-x: auto;
  }

  .tab-list {
    flex-wrap: wrap;
  }

  .sidebar {
    width: 200px;
  }

  .chart-pie {
    width: 150px;
    height: 150px;
  }

  .steps {
    flex-direction: column;
    gap: 16px;
  }

  .step-line {
    display: none;
  }

  .image-gallery {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }

  .datepicker-calendar {
    width: 100%;
  }
}