/**
 * Chanpaca Education Unity 다중 코스 학습 플랫폼
 * 메인 대시보드 스타일
 * 
 * @author Chanpaca Education
 * @version 1.0.0
 */

/* ==========================================================================
   CSS Variables (Custom Properties)
   ========================================================================== */

:root {
  /* Colors */
  --primary-color: #007bff;
  --primary-color-light: #4dabf7;
  --primary-color-dark: #0056b3;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --info-color: #17a2b8;

  /* Text Colors */
  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --text-tertiary: #888888;
  --text-light: #ffffff;

  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --bg-dark: #2d3748;

  /* Border Colors */
  --border-color: #e0e0e0;
  --border-color-hover: #007bff;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

  /* Border Radius */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  /* Layout */
  --header-height: 70px;
  --sidebar-width: 280px;
  --max-content-width: 1200px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Z-index */
  --z-header: 1000;
  --z-sidebar: 900;
  --z-modal: 2000;
  --z-tooltip: 3000;
}

/* Dark theme variables */
[data-theme="dark"] {
  --text-primary: #f7fafc;
  --text-secondary: #cbd5e0;
  --text-tertiary: #a0aec0;
  --bg-primary: #1a202c;
  --bg-secondary: #2d3748;
  --bg-tertiary: #4a5568;
  --bg-dark: #f8f9fa;
  --border-color: #4a5568;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  margin: 0;
  padding: 0;
}

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

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: var(--text-light);
  padding: 8px;
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
}

/* ==========================================================================
   Header Styles
   ========================================================================== */

.dashboard-header {
  position: sticky;
  top: 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-header);
  height: var(--header-height);
}

.dashboard-header__container {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--spacing-lg);
}

/* Logo Section */
.dashboard-header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

.dashboard-header__logo-img {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-sm);
}

.dashboard-header__logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dashboard-header__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.2;
}

.dashboard-header__subtitle {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.2;
}

/* Search Section */
.dashboard-header__search {
  flex: 1;
  max-width: 400px;
  margin: 0 var(--spacing-lg);
}

.search-form {
  position: relative;
  display: flex;
  align-items: center;
}

.search-form__input {
  width: 100%;
  height: 40px;
  padding: 0 var(--spacing-md) 0 var(--spacing-xl);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
}

.search-form__input::placeholder {
  color: var(--text-tertiary);
}

.search-form__input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.search-form__button {
  position: absolute;
  right: var(--spacing-sm);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-base);
}

.search-form__button:hover {
  background: var(--bg-tertiary);
}

.search-form__icon {
  font-size: var(--font-size-base);
}

/* User Actions */
.dashboard-header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.dashboard-header__action {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  color: var(--text-secondary);
}

.dashboard-header__action:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.dashboard-header__action:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ==========================================================================
   Main Content Layout
   ========================================================================== */

.dashboard-main {
  min-height: calc(100vh - var(--header-height));
  background: var(--bg-secondary);
}

.dashboard-main__container {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: var(--spacing-lg);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.dashboard-hero {
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.dashboard-hero__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-md);
  line-height: 1.2;
}

.dashboard-hero__description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin: 0 0 var(--spacing-xl);
  line-height: 1.6;
}

.dashboard-hero__stats {
  display: flex;
  gap: var(--spacing-xl);
}

.hero-stat {
  text-align: center;
}

.hero-stat__number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1;
}

.hero-stat__label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

.dashboard-hero__visual {
  text-align: center;
}

.dashboard-hero__image {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Content Layout
   ========================================================================== */

.dashboard-content {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

/* ==========================================================================
   Sidebar Styles
   ========================================================================== */

.dashboard-sidebar {
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-lg));
}

.sidebar-section {
  margin-bottom: var(--spacing-xl);
}

.sidebar-section:last-child {
  margin-bottom: 0;
}

.sidebar-section__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-lg);
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: var(--spacing-sm);
}

/* Filter Groups */
.filter-group {
  margin-bottom: var(--spacing-lg);
}

.filter-group:last-child {
  margin-bottom: 0;
}

.filter-group__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-md);
}

.filter-group__options {
  border: none;
  padding: 0;
  margin: 0;
}

/* Filter Options */
.filter-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
  cursor: pointer;
  transition: background-color var(--transition-base);
  border-radius: var(--border-radius-sm);
}

.filter-option:hover {
  background: var(--bg-secondary);
}

.filter-option__input {
  width: 16px;
  height: 16px;
  accent-color: var(--primary-color);
}

.filter-option__label {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
}

.filter-option__count {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--border-radius-sm);
  min-width: 20px;
  text-align: center;
}

/* Filter Select */
.filter-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

.filter-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

/* Quick Actions */
.quick-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.quick-action-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: left;
  width: 100%;
}

.quick-action-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary-color);
}

.quick-action-btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.quick-action-btn__icon {
  font-size: var(--font-size-base);
}

/* ==========================================================================
   Courses Section
   ========================================================================== */

.dashboard-courses {
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.courses-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.courses-header__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.courses-header__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.courses-count {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* View Toggle */
.view-toggle {
  display: flex;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.view-toggle__btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--font-size-base);
}

.view-toggle__btn:hover {
  background: var(--bg-tertiary);
}

.view-toggle__btn--active {
  background: var(--primary-color);
  color: var(--text-light);
}

.view-toggle__btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: -2px;
}

/* ==========================================================================
   State Styles (Loading, Error, Empty)
   ========================================================================== */

.loading-state,
.error-state,
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
}

/* Loading State */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--bg-tertiary);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-lg);
}

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

  100% {
    transform: rotate(360deg);
  }
}

/* Error State */
.error-state__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--danger-color);
  margin: 0 0 var(--spacing-md);
}

.error-state__message {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin: 0 0 var(--spacing-lg);
}

.error-state__retry {
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--danger-color);
  color: var(--text-light);
  border: none;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.error-state__retry:hover {
  background: #c82333;
}

/* Empty State */
.empty-state__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-md);
}

.empty-state__message {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin: 0 0 var(--spacing-lg);
}

.empty-state__clear {
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--primary-color);
  color: var(--text-light);
  border: none;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-base);
}

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

/* ==========================================================================
   Courses Grid
   ========================================================================== */

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

.courses-grid[data-view="list"] {
  grid-template-columns: 1fr;
}

.courses-grid[data-view="list"] .course-card {
  display: grid;
  grid-template-columns: 200px 1fr auto;
  gap: var(--spacing-lg);
  align-items: center;
}

.courses-grid[data-view="list"] .course-card__thumbnail {
  height: 120px;
  border-radius: var(--border-radius-md);
}

/* ==========================================================================
   Footer Styles
   ========================================================================== */

.dashboard-footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-2xl) 0;
}

.dashboard-footer__container {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.dashboard-footer__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-md);
}

.footer-section__description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.footer-links,
.footer-contacts {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li,
.footer-contacts li {
  margin-bottom: var(--spacing-sm);
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

.footer-link:hover {
  color: var(--primary-color);
}

.dashboard-footer__bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer-copyright {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  margin: 0;
}

/* ==========================================================================
   Accessibility Panel
   ========================================================================== */

.accessibility-panel {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  height: 100vh;
  background: var(--bg-primary);
  box-shadow: var(--shadow-xl);
  transition: right var(--transition-base);
  z-index: var(--z-modal);
  overflow-y: auto;
}

.accessibility-panel[aria-hidden="false"] {
  right: 0;
}

.accessibility-panel__content {
  padding: var(--spacing-xl);
}

.accessibility-panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.accessibility-panel__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.accessibility-panel__close {
  width: 32px;
  height: 32px;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.accessibility-panel__close:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* === 검색 및 필터링 시스템 스타일 === */

/* 검색 하이라이트 */
.search-highlight {
  background-color: var(--search-highlight-bg, #ffeb3b);
  color: var(--search-highlight-text, #333);
  padding: 2px 4px;
  border-radius: 3px;
  font-weight: 600;
}

/* 다크 테마에서의 검색 하이라이트 */
[data-theme="dark"] .search-highlight {
  --search-highlight-bg: #ffd54f;
  --search-highlight-text: #212121;
}

/* 필터된 카드 애니메이션 */
.course-card {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.course-card[data-filtered="true"] {
  opacity: 0;
  transform: translateY(10px);
}

/* 빈 결과 상태 개선 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-state__title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.empty-state__message {
  font-size: 1rem;
  margin-bottom: 24px;
  line-height: 1.6;
}

.empty-state__clear {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.empty-state__clear:hover {
  background: var(--accent-hover);
}

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

/* 코스 카운트 업데이트 애니메이션 */
.courses-count {
  transition: opacity 0.2s ease;
}

.courses-count.updating {
  opacity: 0.7;
}

/* 필터 옵션 활성 상태 개선 */
.filter-option input[type="checkbox"]:checked+.filter-option__label {
  font-weight: 600;
  color: var(--accent-color);
}

.filter-option input[type="checkbox"]:checked~.filter-option__count {
  background: var(--accent-color);
  color: white;
  font-weight: 500;
}

/* 검색 입력 포커스 스타일 개선 */
.search-form__input:focus {
  box-shadow: 0 0 0 3px rgba(var(--accent-color-rgb), 0.2);
}

/* 로딩 상태 (필요시) */
.course-selector-loading {
  opacity: 0.6;
  pointer-events: none;
}

.course-selector-loading .courses-grid {
  position: relative;
}

.course-selector-loading .courses-grid::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.8);
  z-index: 10;
}

[data-theme="dark"] .course-selector-loading .courses-grid::before {
  background: rgba(0, 0, 0, 0.6);
}

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

/* Tablet */
@media (max-width: 1024px) {
  .dashboard-content {
    grid-template-columns: 1fr;
  }

  .dashboard-sidebar {
    position: static;
    margin-bottom: var(--spacing-xl);
  }

  .dashboard-hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .dashboard-hero__stats {
    justify-content: center;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .dashboard-main__container {
    padding: var(--spacing-md);
  }

  .dashboard-header__container {
    padding: 0 var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-md);
  }

  .dashboard-header__search {
    order: 3;
    flex-basis: 100%;
    margin: 0;
    max-width: none;
  }

  .dashboard-hero {
    padding: var(--spacing-xl);
  }

  .dashboard-hero__title {
    font-size: var(--font-size-2xl);
  }

  .dashboard-hero__stats {
    flex-direction: column;
    gap: var(--spacing-lg);
  }

  .hero-stat {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .hero-stat__number {
    font-size: var(--font-size-2xl);
  }

  .courses-header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
  }

  .courses-header__meta {
    justify-content: space-between;
  }

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

  .dashboard-footer__content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .accessibility-panel {
    width: 100vw;
    right: -100vw;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .dashboard-header__logo-text {
    display: none;
  }

  .dashboard-hero {
    padding: var(--spacing-lg);
  }

  .dashboard-sidebar,
  .dashboard-courses {
    padding: var(--spacing-lg);
  }

  .sidebar-section__title {
    font-size: var(--font-size-base);
  }

  .courses-header__title {
    font-size: var(--font-size-xl);
  }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {

  .dashboard-header,
  .dashboard-sidebar,
  .dashboard-footer,
  .accessibility-panel {
    display: none;
  }

  .dashboard-main {
    background: white;
  }

  .dashboard-content {
    grid-template-columns: 1fr;
  }

  .course-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
}

/* ==========================================================================
   High Contrast Mode
   ========================================================================== */

@media (prefers-contrast: high) {
  :root {
    --border-color: #000000;
    --text-primary: #000000;
    --text-secondary: #333333;
    --bg-primary: #ffffff;
    --bg-secondary: #f0f0f0;
  }

  .dashboard-header__action,
  .quick-action-btn,
  .view-toggle__btn {
    border-width: 2px;
  }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

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

  .loading-spinner {
    animation: none;
    border: 4px solid var(--primary-color);
  }
}

/* ==========================================================================
   Featured Course Highlight
   ========================================================================== */

.hero-featured-course {
  background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  margin: var(--spacing-xl) 0;
  color: white;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
  transform: translateY(0);
  transition: all var(--transition-base);
}

.hero-featured-course:hover {
  transform: translateY(-2px);
  box-shadow: 0 25px 35px rgba(255, 107, 107, 0.3);
}

.hero-featured-course::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%23ffffff" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="%23ffffff" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  pointer-events: none;
}

.featured-course-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  backdrop-filter: blur(10px);
}

.featured-course-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin: 0 0 var(--spacing-md) 0;
  line-height: var(--line-height-tight);
}

.featured-course-details {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.featured-course-details span {
  background: rgba(255, 255, 255, 0.15);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  backdrop-filter: blur(10px);
}

.featured-course-cta {
  display: inline-flex;
  align-items: center;
  background: white;
  color: #ff6b6b;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-base);
  box-shadow: var(--shadow-md);
}

.featured-course-cta:hover {
  background: #f8f9fa;
  transform: translateX(4px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  color: #ee5a52;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .hero-featured-course {
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
  }
  
  .featured-course-title {
    font-size: var(--font-size-xl);
  }
  
  .featured-course-details {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .featured-course-cta {
    text-align: center;
    justify-content: center;
  }
}