/* Button component styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-family: var(--font-family-body);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-label);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  user-select: none;
  white-space: nowrap;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-primary), 0 0 0 4px var(--color-primary-light);
}

.btn:focus:not(:focus-visible) {
  box-shadow: none;
}

.btn:focus-visible {
  box-shadow: 0 0 0 2px var(--color-primary), 0 0 0 4px var(--color-primary-light);
}

/* Sizes */
.btn--sm {
  font-size: var(--font-size-label-small);
  padding: var(--spacing-xs) var(--spacing-sm);
  min-height: 2rem;
}

.btn--md {
  font-size: var(--font-size-label-medium);
  padding: var(--spacing-sm) var(--spacing-md);
  min-height: 2.5rem;
}

.btn--lg {
  font-size: var(--font-size-label-large);
  padding: var(--spacing-sm) var(--spacing-lg);
  min-height: 3rem;
}

/* Variants */
.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}

.btn--primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--primary:active:not(:disabled) {
  background-color: var(--color-primary-dark);
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

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

.btn--secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--secondary:active:not(:disabled) {
  background-color: var(--color-secondary-dark);
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover:not(:disabled) {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline:active:not(:disabled) {
  background-color: var(--color-primary-dark);
  color: var(--color-on-primary);
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: transparent;
}

.btn--ghost:hover:not(:disabled) {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  transform: translateY(-1px);
}

.btn--ghost:active:not(:disabled) {
  background-color: var(--color-primary-dark);
  color: var(--color-on-primary);
  transform: translateY(0);
}

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

.btn--danger:hover:not(:disabled) {
  background-color: var(--color-error-dark);
  border-color: var(--color-error-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--danger:active:not(:disabled) {
  background-color: var(--color-error-dark);
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* States */
.btn--disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn--loading {
  cursor: not-allowed;
}

.btn--full-width {
  width: 100%;
}

/* Loading spinner */
.btn__spinner {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn__spinner-icon {
  width: 1rem;
  height: 1rem;
  animation: btn-spin 1s linear infinite;
}

.btn__spinner-circle {
  stroke: currentColor;
  stroke-linecap: round;
  stroke-dasharray: 60;
  stroke-dashoffset: 60;
  animation: btn-dash 1.5s ease-in-out infinite;
}

.btn__content--loading {
  opacity: 0;
}

.btn__content {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Animations */
@keyframes btn-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes btn-dash {
  0% {
    stroke-dasharray: 1, 200;
    stroke-dashoffset: 0;
  }
  50% {
    stroke-dasharray: 100, 200;
    stroke-dashoffset: -15;
  }
  100% {
    stroke-dasharray: 100, 200;
    stroke-dashoffset: -120;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn {
    border-width: 2px;
  }
  
  .btn:focus-visible {
    outline: 3px solid;
    outline-offset: 2px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .btn {
    transition: none;
  }
  
  .btn:hover:not(:disabled) {
    transform: none;
  }
  
  .btn:active:not(:disabled) {
    transform: none;
  }
  
  .btn__spinner-icon {
    animation: none;
  }
  
  .btn__spinner-circle {
    animation: none;
    stroke-dasharray: none;
    stroke-dashoffset: 0;
  }
}.nav-container {
  background-color: white;
  padding: 4px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  font-family: "Pretendard", sans-serif;
  max-width: 2560px;
  width: 100%;
  height: 52px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
}

@media (min-width: 2560px) {
  .nav-container {
    width: 2560px;
  }
}

@media (max-width: 768px) {
  .nav-container {
    height: 48px;
    padding: 4px 16px;
  }
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo-img {
  height: 50px;
  width: auto;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.nav-notice {
  display: flex;
  align-items: center;
}

.notice-text {
  font-size: 16px;
  font-weight: 500;
  color: #666;
  padding: 8px 16px;
  background: #f8f9fa;
  border-radius: 20px;
  border: 1px solid #dee2e6;
}

.nav-version {
  font-size: 12px;
  color: #6c757d;
  font-weight: 400;
  padding: 2px 6px;
  background: #e9ecef;
  border-radius: 4px;
  letter-spacing: 0.5px;
}.header {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-bottom: 3px solid #3f51b5;
}
.unauthenticated-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.unauth-main-container {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  padding-top: calc(52px + 40px); /* Nav height + original padding */
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.unauth-title-container {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
}

.unauth-title {
  margin: 0;
  font-size: 48px;
  font-weight: 700;
  color: #000;
  text-align: center;
  letter-spacing: 0.5px;
  line-height: 68px;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.unauth-content-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  gap: 40px;
}

.unauth-intro-message {
  text-align: center;
  margin-bottom: 20px;
}

.unauth-intro-text {
  font-size: 20px;
  font-weight: 600;
  color: #333;
  line-height: 1.5;
  margin: 0;
}

.unauth-panels-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 1000px;
  width: 100%;
}

.unauth-panel {
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  text-align: center;
  display: flex;
  flex-direction: column;
  min-height: 280px;
}

.unauth-member-panel {
  background: white;
  border: 2px solid #6366f1;
}

.unauth-non-member-panel {
  background: #6366f1;
  border: 2px solid #6366f1;
}

.unauth-non-member-panel .unauth-panel-title {
  color: white;
}

.unauth-non-member-panel .unauth-panel-description {
  color: white;
}

.unauth-panel-header {
  margin-bottom: 20px;
}

.unauth-panel-title {
  font-size: 24px;
  font-weight: 700;
  color: #333;
  margin: 0;
  line-height: 1.3;
}

.unauth-panel-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.unauth-panel-description {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin: 0 0 30px 0;
  gap: 8px;
}

.unauth-panel-description p {
  font-size: 16px;
  color: #666;
  line-height: 1.6;
  margin: 0;
  text-align: center;
}

.unauth-non-member-panel .unauth-panel-description p {
  color: white;
}

.unauth-non-member-panel .unauth-panel-button {
  background: white;
  color: #6366f1;
  border: 2px solid white;
}

.unauth-non-member-panel .unauth-panel-button:hover {
  background: #f8f9fa;
  color: #6366f1;
  border-color: #f8f9fa;
}

.unauth-panel-actions {
  display: flex;
  justify-content: center;
}

.unauth-panel-button {
  min-width: 160px;
  height: 50px;
  font-size: 16px;
  font-weight: 600;
}

.unauth-test-section {
  margin-top: 30px;
  padding-top: 20px;
  text-align: center;
}

.unauth-divider {
  border: none;
  border-top: 1px solid #dee2e6;
  margin: 0 0 20px 0;
}

.unauth-test-label {
  font-size: 14px;
  color: #666;
  margin-bottom: 15px;
}

.unauth-test-button {
  min-width: 120px;
}

/* 반응형 */
@media (max-width: 768px) {
  .unauth-title {
    font-size: 32px;
    line-height: 48px;
  }

  .unauth-main-container {
    padding-top: calc(48px + 30px); /* Mobile nav height + reduced padding */
  }

  .unauth-content-section {
    gap: 30px;
    padding: 0 20px;
  }

  .unauth-intro-text {
    font-size: 18px;
  }
  
  .unauth-panels-container {
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 400px;
  }
  
  .unauth-panel {
    padding: 25px 20px;
    min-height: 240px;
  }
  
  .unauth-panel-title {
    font-size: 20px;
  }
  
  .unauth-panel-description {
    margin-bottom: 25px;
  }

  .unauth-panel-description p {
    font-size: 15px;
  }
  
  .unauth-panel-button {
    width: 100%;
    min-width: auto;
  }
}/* Loading state component styles */

.loading-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--sb-color-surface);
}

.loading-main-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sb-spacing-6);
}

.loading-content-section {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
}

.loading-spinner-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sb-spacing-4);
  text-align: center;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  animation: loading-spin 1s linear infinite;
}

.loading-spinner-icon {
  width: 100%;
  height: 100%;
}

.loading-spinner-circle {
  stroke: var(--sb-color-primary-600);
  stroke-linecap: round;
  stroke-dasharray: 62.83;
  stroke-dashoffset: 62.83;
  animation: loading-dash 2s ease-in-out infinite;
}

.loading-message {
  font-size: var(--sb-font-size-base);
  font-weight: var(--sb-font-weight-medium);
  color: var(--sb-color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* Animations */
@keyframes loading-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes loading-dash {
  0% {
    stroke-dasharray: 1, 150;
    stroke-dashoffset: 0;
  }
  50% {
    stroke-dasharray: 90, 150;
    stroke-dashoffset: -35;
  }
  100% {
    stroke-dasharray: 90, 150;
    stroke-dashoffset: -124;
  }
}

/* Responsive design */
@media (max-width: 768px) {
  .loading-main-container {
    padding: var(--sb-spacing-4);
  }
  
  .loading-spinner {
    width: 40px;
    height: 40px;
  }
  
  .loading-message {
    font-size: var(--sb-font-size-sm);
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .loading-spinner-circle {
    stroke: var(--sb-color-text-primary);
  }
  
  .loading-message {
    color: var(--sb-color-text-primary);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .loading-spinner {
    animation: none;
  }
  
  .loading-spinner-circle {
    animation: none;
    stroke-dasharray: none;
    stroke-dashoffset: 0;
  }
}/* 모바일 햄버거 버튼 */
.sidebar-mobile-toggle {
  display: none;
  position: fixed;
  top: calc(var(--nav-height-mobile) + 8px); /* Nav 아래 위치 */
  left: 20px;
  z-index: 1001;
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  width: 48px;
  height: 48px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.sidebar-mobile-toggle:hover {
  background: #f5f5f5;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* 햄버거 아이콘 */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 20px;
  height: 20px;
}

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: #333;
  border-radius: 1px;
  transition: all 0.3s ease;
}

.hamburger span:not(:last-child) {
  margin-bottom: 4px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* CSS 변수 정의 - 디자인 시스템 색상 */
:root {
  --sidebar-bg-primary: #1565c0;
  --sidebar-bg-primary-dark: #0d47a1;
  --sidebar-bg-primary-light: #1976d2;
  --sidebar-text-primary: #ffffff;
  --sidebar-text-secondary: #e3f2fd;
  --sidebar-accent: #ffffff;
  --sidebar-hover: rgba(255, 255, 255, 0.1);
  --sidebar-active: rgba(255, 255, 255, 0.2);
  --sidebar-border: rgba(255, 255, 255, 0.2);
  --sidebar-footer-bg: #ffffff;
  --sidebar-shadow: rgba(0, 0, 0, 0.1);
  
  /* 간격 시스템 */
  --sidebar-spacing-xs: 4px;
  --sidebar-spacing-sm: 8px;
  --sidebar-spacing-md: 16px;
  --sidebar-spacing-lg: 24px;
  --sidebar-spacing-xl: 32px;
  
  /* 타이포그래피 */
  --sidebar-font-size-title: 16px;
  --sidebar-font-size-subtitle: 13px;
  --sidebar-font-size-button: 14px;
  --sidebar-line-height-title: 1.5;
  --sidebar-line-height-subtitle: 1.4;
  
  /* 전환 효과 */
  --sidebar-transition-normal: all 0.3s ease;
  --sidebar-transition-fast: all 0.2s ease;
  
  /* 접근성 */
  --sidebar-focus-outline: 2px solid #ffffff;
  --sidebar-focus-offset: 2px;
}

/* 사이드바 */
.sidebar {
  position: fixed;
  left: 0;
  top: var(--nav-height);
  width: var(--sidebar-width);
  height: calc(100vh - var(--nav-height));
  background: var(--sidebar-bg-primary);
  border-right: 3px solid var(--sidebar-bg-primary-dark);
  box-shadow: 3px 0 10px var(--sidebar-shadow);
  z-index: 1000;
  overflow-y: auto;
  transition: var(--sidebar-transition-normal);
  display: flex;
  flex-direction: column;
  will-change: transform;
  transform: translateZ(0);
}

/* 데스크탑에서 접힌 상태 */
.sidebar.collapsed {
  transform: translateX(-100%);
}

/* 데스크탑 토글 버튼 */
.sidebar-desktop-toggle {
  display: none;
  position: absolute;
  top: var(--sidebar-spacing-lg);
  right: var(--sidebar-spacing-lg);
  background: var(--sidebar-active);
  border: 1px solid var(--sidebar-border);
  border-radius: var(--sidebar-spacing-sm);
  width: 48px;
  height: 48px;
  cursor: pointer;
  transition: var(--sidebar-transition-normal);
  z-index: 1001;
}

.sidebar-desktop-toggle:hover {
  background: rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 12px var(--sidebar-shadow);
}

.sidebar-desktop-toggle .toggle-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  transition: var(--sidebar-transition-normal);
}

.sidebar-desktop-toggle .toggle-icon svg {
  width: 20px;
  height: 20px;
  color: var(--sidebar-text-primary);
}

.sidebar-desktop-toggle .toggle-icon.collapsed {
  transform: rotate(180deg);
}

/* 사이드바가 접힌 상태에서 보이는 확장 버튼 */
.sidebar-expand-button {
  display: none;
  position: fixed;
  top: calc(var(--nav-height) + 16px);
  left: 16px;
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  width: 48px;
  height: 48px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  z-index: 1002;
}

.sidebar-expand-button:hover {
  background: #f5f5f5;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.sidebar-expand-button svg {
  width: 20px;
  height: 20px;
  color: #333;
}

.sidebar-header {
  padding: 32px 24px 24px;
  border-bottom: 1px solid #f0f0f0;
}

.sidebar-title {
  font-size: 20px;
  font-weight: 600;
  color: #333;
  margin: 0;
}

.sidebar-nav {
  padding: var(--sidebar-spacing-lg) 0 var(--sidebar-spacing-md);
  flex: 1;
}

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

.sidebar-menu-item {
  margin: 0;
}

.sidebar-menu-button {
  width: 100%;
  background: none;
  border: none;
  padding: var(--sidebar-spacing-md) var(--sidebar-spacing-lg);
  text-align: left;
  cursor: pointer;
  transition: var(--sidebar-transition-normal);
  position: relative;
  min-height: 48px;
}

.sidebar-menu-button:hover {
  background: var(--sidebar-hover);
  transform: translateX(4px);
}

.sidebar-menu-button:active {
  transform: translateX(2px);
}

.sidebar-menu-button:focus-visible {
  outline: var(--sidebar-focus-outline);
  outline-offset: var(--sidebar-focus-offset);
  background: var(--sidebar-hover);
}

.sidebar-menu-button:focus:not(:focus-visible) {
  outline: none;
}

.sidebar-menu-button.active {
  background: var(--sidebar-active);
  border-right: 3px solid var(--sidebar-accent);
}

.sidebar-menu-button.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--sidebar-accent);
}


.menu-title {
  font-size: var(--sidebar-font-size-title);
  font-weight: 500;
  color: var(--sidebar-text-primary);
  line-height: var(--sidebar-line-height-title);
}

.sidebar-menu-button.active .menu-title {
  color: var(--sidebar-text-primary);
  font-weight: 600;
}

.menu-subtitle {
  font-size: var(--sidebar-font-size-subtitle);
  color: var(--sidebar-text-secondary);
  font-weight: 400;
  line-height: var(--sidebar-line-height-subtitle);
}

.sidebar-menu-button.active .menu-subtitle {
  color: var(--sidebar-text-primary);
}

/* 사이드바 헤더 섹션 */
.sidebar-header-section {
  padding: var(--sidebar-spacing-lg);
  border-bottom: 1px solid var(--sidebar-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sidebar-spacing-md);
}

/* 사이드바 브랜드 */
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--sidebar-spacing-sm);
  flex: 1;
}

.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--sidebar-active);
  border-radius: 50%;
  flex-shrink: 0;
}

.brand-icon-svg {
  width: 18px;
  height: 18px;
  color: var(--sidebar-text-primary);
}

.brand-text {
  font-size: var(--sidebar-font-size-title);
  font-weight: 600;
  color: var(--sidebar-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-close-button {
  background: var(--sidebar-hover);
  border: 1px solid var(--sidebar-border);
  border-radius: var(--sidebar-spacing-sm);
  padding: var(--sidebar-spacing-sm);
  cursor: pointer;
  transition: var(--sidebar-transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sidebar-text-primary);
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.sidebar-close-button:hover {
  background: var(--sidebar-active);
  transform: scale(1.05);
}

.sidebar-close-button:focus-visible {
  outline: var(--sidebar-focus-outline);
  outline-offset: var(--sidebar-focus-offset);
}

.sidebar-close-button:focus:not(:focus-visible) {
  outline: none;
}

/* 메뉴 아이콘 및 레이아웃 */
.menu-button-content {
  display: flex;
  align-items: center;
  gap: var(--sidebar-spacing-md);
  width: 100%;
}

.menu-icon-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.menu-icon {
  width: 20px;
  height: 20px;
  color: var(--sidebar-text-secondary);
  transition: var(--sidebar-transition-normal);
}

.sidebar-menu-button.active .menu-icon {
  color: var(--sidebar-text-primary);
}

.sidebar-menu-button:hover .menu-icon {
  color: var(--sidebar-text-primary);
}

.menu-text-content {
  display: flex;
  flex-direction: column;
  gap: var(--sidebar-spacing-xs);
  flex: 1;
  min-width: 0;
}

.close-icon {
  width: 16px;
  height: 16px;
  color: var(--sidebar-text-primary);
  transition: var(--sidebar-transition-normal);
}

/* 사이드바 푸터 */
.sidebar-footer {
  padding: var(--sidebar-spacing-lg);
  border-top: 2px solid var(--sidebar-bg-primary-dark);
  border-left: 2px solid #e0e0e0;
  border-right: 2px solid #e0e0e0;
  border-bottom: 2px solid #e0e0e0;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: auto;
  background: var(--sidebar-footer-bg);
  border-radius: 0 0 var(--sidebar-spacing-sm) 0;
}

.sidebar-logo {
  max-width: 120px;
  height: auto;
  opacity: 1;
  transition: var(--sidebar-transition-normal);
}

.sidebar-logo:hover {
  opacity: 0.8;
}

/* 오버레이 */
.sidebar-overlay {
  display: none;
}

/* 데스크탑 스타일 */
@media (min-width: 769px) {
  .sidebar-mobile-toggle {
    display: none !important;
  }
  
  .sidebar {
    position: fixed; /* fixed로 유지 */
    height: calc(100vh - var(--nav-height));
    transform: none;
  }
  
  .sidebar.collapsed {
    transform: translateX(-100%);
  }
  
  .sidebar-desktop-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .sidebar-expand-button {
    display: flex;
    justify-content: center;
    align-items: center;
  }
}

/* 모바일 스타일 */
@media (max-width: 768px) {
  .sidebar-mobile-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .sidebar {
    top: var(--nav-height-mobile); /* 모바일 Nav 높이 */
    height: calc(100vh - var(--nav-height-mobile)); /* 모바일 Nav 높이 제외 */
    transform: translateX(-100%);
  }
  
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  
  .sidebar-overlay {
    display: block;
    position: fixed;
    top: var(--nav-height-mobile); /* Nav 아래부터 시작 */
    left: 0;
    width: 100vw;
    height: calc(100vh - var(--nav-height-mobile)); /* Nav 높이 제외 */
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
  }
  
  .sidebar-header {
    padding: 24px 24px 20px; /* 여백 조정 */
  }
}

/* 작은 모바일 화면 */
@media (max-width: 480px) {
  .sidebar-mobile-toggle {
    top: calc(var(--nav-height-mobile) + 4px); /* 더 가까이 */
    left: 16px;
    width: 44px;
    height: 44px;
  }
  
  .sidebar {
    width: 100vw;
  }
  
  .sidebar-menu-button {
    padding: 20px 24px;
  }
  
  .menu-title {
    font-size: 18px;
  }
  
  .menu-subtitle {
    font-size: 14px;
  }
}/* VimeoPlayer.css - 보안 강화된 Vimeo 플레이어 */

/* ============================================
   VARIABLES
   ============================================ */
:root {
  --vimeo-primary: #3F51B5;
  --vimeo-background: #000000;
  --vimeo-surface: #ffffff;
  --vimeo-text: #ffffff;
  --vimeo-text-dark: #000000;
  --vimeo-border: #e0e0e0;
  --vimeo-shadow: rgba(0, 0, 0, 0.15);
}

/* ============================================
   VIMEO PLAYER CONTAINER
   ============================================ */

.vimeo-player__title-bar .vimeo-player__title {
  color: var(--vimeo-text-dark);
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  flex: 1;
}

/* 전체화면 버튼 */
.vimeo-player__fullscreen-btn {
  background: none;
  border: none;
  color: var(--vimeo-text-dark);
  cursor: pointer;
  padding: 8px;
  border-radius: 4px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.vimeo-player__fullscreen-btn:hover {
  background-color: rgba(63, 81, 181, 0.1);
  color: var(--vimeo-primary);
}

.vimeo-player__fullscreen-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.vimeo-player__fullscreen-btn svg {
  width: 20px;
  height: 20px;
}

/* 제목 바 레이아웃 조정 */
.vimeo-player__title-bar {
  background: var(--vimeo-surface);
  padding: 12px 20px;
  border-top: 1px solid var(--vimeo-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* ============================================
   MAIN CONTAINER
   ============================================ */
.vimeo-player {
  width: 100%;
  max-width: 100%;
  position: relative;
  background: var(--vimeo-background);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 8px 32px var(--vimeo-shadow);
  border: 2px solid var(--vimeo-border);
  transition: all 0.3s ease;
}

.vimeo-player:hover {
  border-color: var(--vimeo-primary);
  box-shadow: 0 12px 40px rgba(63, 81, 181, 0.2);
}

.vimeo-player__container {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
}

/* ============================================
   IFRAME WRAPPER
   ============================================ */
.vimeo-player__iframe-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9; /* 가로형 비율로 복원 */
  background: var(--vimeo-background);
  overflow: hidden;
}

.vimeo-player__iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: var(--vimeo-background);
}

/* Vimeo iframe 스타일 강제 적용 */
.vimeo-player__iframe iframe {
  width: 100% !important;
  height: 100% !important;
  border: none !important;
  border-radius: 0 !important;
}

/* ============================================
   PROTECTION LAYER
   ============================================ */
.vimeo-player__protection-layer {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  z-index: 999 !important;
  pointer-events: none !important;
  user-select: none !important;
  -webkit-user-select: none !important;
  -moz-user-select: none !important;
  -ms-user-select: none !important;
  background: transparent !important;
}

/* ============================================
   LOADING STATE
   ============================================ */
.vimeo-player__loading {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  color: var(--vimeo-primary);
  z-index: 2;
}

.vimeo-player__loading-spinner {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  animation: vimeo-spin 1s linear infinite;
}

.vimeo-player__loading-spinner svg {
  width: 100%;
  height: 100%;
  color: var(--vimeo-primary);
}

.vimeo-player__loading p {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--vimeo-text-dark);
}

@keyframes vimeo-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ============================================
   PROGRESS BAR
   ============================================ */
.vimeo-player__progress-container {
  flex: 1;
  margin: 0 8px;
  padding: 8px 0;
  cursor: pointer;
  max-width: none;
}

.vimeo-player__progress-track {
  position: relative;
  width: 100%;
  height: 6px;
  background-color: rgba(255, 255, 255, 0.3);
  border-radius: 3px;
  overflow: hidden;
}

.vimeo-player__progress-filled {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--vimeo-primary), #5C6BC0);
  border-radius: 3px;
  transition: width 0.1s ease;
}

.vimeo-player__progress-thumb {
  position: absolute;
  top: 50%;
  width: 14px;
  height: 14px;
  background-color: var(--vimeo-primary);
  border: 2px solid white;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 2px 8px rgba(63, 81, 181, 0.3);
  transition: all 0.2s ease;
  opacity: 0;
}

.vimeo-player__progress-container:hover .vimeo-player__progress-thumb {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.2);
}

.vimeo-player__progress-container:hover .vimeo-player__progress-track {
  height: 8px;
}

/* ============================================
   CUSTOM CONTROLS
   ============================================ */
.vimeo-player__controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: linear-gradient(135deg, var(--vimeo-background), #1a1a1a);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  min-height: 70px;
}

.vimeo-player__controls-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.vimeo-player__controls-center {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 8px;
  margin: 0 12px;
}

.vimeo-player__controls-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-width: 60px;
}

/* ============================================
   CONTROL BUTTONS
   ============================================ */
.vimeo-player__control-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--vimeo-text);
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.vimeo-player__control-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.vimeo-player__control-btn:active:not(:disabled) {
  transform: scale(0.95);
}

.vimeo-player__control-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.vimeo-player__control-btn--primary {
  background: linear-gradient(135deg, var(--vimeo-primary), #1976D2);
  color: white;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.vimeo-player__control-btn--primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #1976D2, #1565C0);
  box-shadow: 0 6px 20px rgba(63, 81, 181, 0.4);
}

.vimeo-player__control-btn svg {
  width: 16px;
  height: 16px;
}

.vimeo-player__control-btn--primary svg {
  width: 18px;
  height: 18px;
}

/* ============================================
   TIME DISPLAY
   ============================================ */
.vimeo-player__time {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--vimeo-text);
  font-size: 14px;
  font-weight: 500;
  font-family: 'JetBrains Mono', monospace;
  background: rgba(255, 255, 255, 0.1);
  padding: 8px 16px;
  border-radius: 20px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.vimeo-player__time-separator {
  opacity: 0.7;
  margin: 0 4px;
}

/* ============================================
   TITLE
   ============================================ */
.vimeo-player__title {
  color: var(--vimeo-text);
  font-size: 14px;
  font-weight: 500;
  opacity: 0.9;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  text-align: right;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* 1024px 이하 */
@media (max-width: 1024px) {
  .vimeo-player__controls {
    padding: 14px 16px;
    min-height: 64px;
  }
  
  .vimeo-player__control-btn {
    width: 40px;
    height: 40px;
  }
  
  .vimeo-player__control-btn--primary {
    width: 44px;
    height: 44px;
  }
  
  .vimeo-player__controls-left {
    gap: 10px;
  }
  
  .vimeo-player__time {
    font-size: 13px;
    padding: 6px 12px;
  }
}

/* 768px 이하 */
@media (max-width: 768px) {
  .vimeo-player {
    border-radius: 16px;
  }
  
  .vimeo-player__controls {
    padding: 12px;
    min-height: 60px;
    flex-wrap: wrap;
    gap: 8px;
  }
  
  .vimeo-player__controls-left {
    gap: 8px;
  }
  
  .vimeo-player__control-btn {
    width: 36px;
    height: 36px;
  }
  
  .vimeo-player__control-btn--primary {
    width: 40px;
    height: 40px;
  }
  
  .vimeo-player__control-btn svg {
    width: 18px;
    height: 18px;
  }
  
  .vimeo-player__control-btn--primary svg {
    width: 20px;
    height: 20px;
  }
  
  .vimeo-player__time {
    font-size: 12px;
    padding: 4px 8px;
  }
  
  .vimeo-player__title {
    font-size: 13px;
  }
  
  .vimeo-player__loading-spinner {
    width: 40px;
    height: 40px;
  }
  
  .vimeo-player__loading p {
    font-size: 14px;
  }
}

/* 480px 이하 */
@media (max-width: 480px) {
  .vimeo-player {
    border-radius: 12px;
  }
  
  .vimeo-player__controls {
    padding: 10px;
    min-height: 56px;
  }
  
  .vimeo-player__controls-right {
    display: none; /* 작은 화면에서 제목 숨김 */
  }
  
  .vimeo-player__control-btn {
    width: 32px;
    height: 32px;
  }
  
  .vimeo-player__control-btn--primary {
    width: 36px;
    height: 36px;
  }
  
  .vimeo-player__control-btn svg {
    width: 16px;
    height: 16px;
  }
  
  .vimeo-player__control-btn--primary svg {
    width: 18px;
    height: 18px;
  }
  
  .vimeo-player__time {
    font-size: 11px;
    padding: 3px 6px;
  }
  
  .vimeo-player__loading-spinner {
    width: 36px;
    height: 36px;
  }
  
  .vimeo-player__loading p {
    font-size: 13px;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
.vimeo-player__control-btn:focus {
  outline: 2px solid var(--vimeo-primary);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .vimeo-player__loading-spinner {
    animation: none;
  }
  
  .vimeo-player__control-btn {
    transition: none;
  }
  
  .vimeo-player {
    transition: none;
  }
}

/* ============================================
   SECURITY MEASURES
   ============================================ */

/* 텍스트 선택 방지 */
.vimeo-player * {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* 드래그 방지 */
.vimeo-player img,
.vimeo-player iframe {
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  -o-user-drag: none;
  user-drag: none;
}

/* 개발자 도구 우클릭 방지 */
.vimeo-player {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* ============================================
   DARK MODE SUPPORT
   ============================================ */
@media (prefers-color-scheme: dark) {
  .vimeo-player__loading {
    background: linear-gradient(135deg, #2a2a2a, #1a1a1a);
  }
  
  .vimeo-player__loading p {
    color: var(--vimeo-text);
  }
}.medical-training-content {
  width: 100%;
  max-width: 2560px;
  margin: 0 auto;
  padding: 40px 40px 20px;
  flex: 1;
}

.title-container {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
}

.title {
  margin: 0;
  font-size: 48px;
  font-weight: 700;
  color: #000;
  text-align: center;
  letter-spacing: 0.5px;
  line-height: 68px;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;

  @media (max-width: 768px) {
    font-size: 32px;
    line-height: 48px;
  }
}

@media (max-width: 768px) {
  .medical-training-content {
    padding: 20px 16px;
  }
}

.video-section {
  margin-bottom: 40px;
}

.video-title {
  font-size: 24px;
  font-weight: 600;
  color: #333;
  text-align: center;
  margin-bottom: 30px;
  padding-bottom: 10px;
  border-bottom: 2px solid #3f51b5;
  display: inline-block;
  width: 100%;
}

.video-container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.materials-section {
  background: #f8f9fa;
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.materials-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.materials-label {
  font-size: 20px;
  font-weight: 600;
  color: #333;
}

.download-button {
  min-width: 120px;
  height: 45px;
  font-size: 16px;
  font-weight: 600;
}.smilebogun-training-content {
  width: 100%;
  max-width: 2560px;
  margin: 0 auto;
  padding: 40px 40px 20px;
  flex: 1;
}

.title-container {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
}

.title-box {
  text-align: center;
}

.title {
  margin: 0 0 8px 0;
  font-size: 48px;
  font-weight: 700;
  color: #000;
  text-align: center;
  letter-spacing: 0.5px;
  line-height: 68px;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;

  @media (max-width: 768px) {
    font-size: 32px;
    line-height: 48px;
  }
}

.title-subtitle {
  margin: 0;
  font-size: 18px;
  font-weight: 500;
  color: #666;
  text-align: center;
}

@media (max-width: 768px) {
  .smilebogun-training-content {
    padding: 20px 16px;
  }
}

.video-section {
  margin-bottom: 40px;
}

.video-container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.materials-section {
  background: #f8f9fa;
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  margin-bottom: 40px;
}

.materials-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.materials-label {
  font-size: 20px;
  font-weight: 600;
  color: #333;
}

.download-button {
  min-width: 120px;
  height: 45px;
  font-size: 16px;
  font-weight: 600;
}

.additional-section {
  margin-top: 40px;
}

.content-card {
  background: #fff;
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border: 1px solid #e0e0e0;
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  color: #333;
  margin: 0 0 24px 0;
  text-align: center;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-list li {
  font-size: 16px;
  color: #555;
  padding: 12px 20px;
  background: #f8f9fa;
  border-radius: 8px;
  position: relative;
  padding-left: 40px;
}

.feature-list li::before {
  content: "•";
  color: #2196f3;
  position: absolute;
  left: 20px;
  font-weight: bold;
  font-size: 18px;
}

@media (max-width: 768px) {
  .content-card {
    padding: 24px 20px;
  }
  
  .section-title {
    font-size: 20px;
  }
  
  .feature-list li {
    font-size: 15px;
    padding: 10px 16px;
    padding-left: 36px;
  }
  
  .feature-list li::before {
    left: 16px;
  }
}.health-newsletter-content {
  width: 100%;
  max-width: 2560px;
  margin: 0 auto;
  padding: 40px 40px 20px;
  flex: 1;
}

.title-container {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
}

.title-box {
  text-align: center;
}

.title {
  margin: 0 0 8px 0;
  font-size: 48px;
  font-weight: 700;
  color: #000;
  text-align: center;
  letter-spacing: 0.5px;
  line-height: 68px;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;

  @media (max-width: 768px) {
    font-size: 32px;
    line-height: 48px;
  }
}

.title-subtitle {
  margin: 0;
  font-size: 18px;
  font-weight: 500;
  color: #666;
  text-align: center;
}

/* 탭 관련 스타일 제거됨 */

/* 연도별 섹션 */
.newsletter-sections {
  margin-bottom: 40px;
}

.year-section {
  margin-bottom: 48px;
}

.year-title {
  font-size: 28px;
  font-weight: 600;
  color: #333;
  text-align: center;
  margin: 0 0 24px 0;
  padding-bottom: 12px;
  border-bottom: 2px solid #2196f3;
  display: inline-block;
  width: 100%;
}

/* 뉴스레터 목록 */
.newsletter-list {
  max-width: 800px;
  margin: 0 auto;
}

.newsletter-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  margin-bottom: 8px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.newsletter-item:hover {
  background: #f8f9fa;
  border-color: #2196f3;
  box-shadow: 0 2px 8px rgba(33, 150, 243, 0.1);
}

.newsletter-item:last-child {
  margin-bottom: 0;
}

.item-info {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
}

.file-icon {
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
}

.item-title {
  font-size: 18px;
  font-weight: 500;
  color: #333;
  flex: 1;
}

.file-format {
  font-size: 11px;
  font-weight: 500;
  color: #666;
  background: #f0f0f0;
  padding: 4px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.download-buttons {
  display: flex;
  gap: 8px;
  align-items: center;
}

.download-btn {
  background: none;
  border: 2px solid #2196f3;
  color: #2196f3;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  white-space: nowrap;
  min-width: 80px;
}

.download-btn:hover:not(.disabled) {
  background: #2196f3;
  color: #fff;
}

.download-btn.disabled {
  background: none;
  border-color: #ccc;
  color: #999;
  cursor: not-allowed;
}

.download-btn.elementary {
  /* 초등학교 버튼 전용 스타일 */
}

.download-btn.middle {
  /* 중등학교 버튼 전용 스타일 */
}

/* 안내 섹션 */
.info-section {
  margin-top: 60px;
}

.info-card {
  background: #fff;
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border: 1px solid #e0e0e0;
  max-width: 800px;
  margin: 0 auto;
}

.info-title {
  font-size: 24px;
  font-weight: 600;
  color: #333;
  margin: 0 0 24px 0;
  text-align: center;
}

.info-content p {
  font-size: 16px;
  color: #555;
  line-height: 1.6;
  margin: 0 0 24px 0;
  text-align: center;
}

.info-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.info-features li {
  font-size: 16px;
  color: #555;
  padding: 12px 20px;
  background: #f8f9fa;
  border-radius: 8px;
  position: relative;
  padding-left: 40px;
}

.info-features li::before {
  content: "•";
  color: #2196f3;
  position: absolute;
  left: 20px;
  font-weight: bold;
  font-size: 18px;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
  .health-newsletter-content {
    padding: 20px 16px;
  }
  
  .year-title {
    font-size: 24px;
  }
  
  .newsletter-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
  }
  
  .item-info {
    width: 100%;
    gap: 12px;
  }
  
  .download-buttons {
    align-self: stretch;
    justify-content: space-between;
  }
  
  .download-btn {
    flex: 1;
    max-width: none;
  }
  
  .info-card {
    padding: 24px 20px;
  }
  
  .info-title {
    font-size: 20px;
  }
  
  .info-content p {
    font-size: 15px;
  }
  
  .info-features li {
    font-size: 15px;
    padding: 10px 16px;
    padding-left: 36px;
  }
  
  .info-features li::before {
    left: 16px;
  }
}

@media (max-width: 480px) {
  .newsletter-item {
    padding: 14px;
  }
  
  .item-info {
    gap: 10px;
  }
  
  .file-icon {
    font-size: 20px;
    width: 28px;
  }
  
  .item-title {
    font-size: 16px;
  }
  
  .download-buttons {
    flex-direction: column;
    gap: 8px;
  }
  
  .download-btn {
    padding: 12px 16px;
    font-size: 14px;
    width: 100%;
  }
}/* CSS 변수 정의 */
:root {
  --nav-height: 52px;
  --nav-height-mobile: 48px;
  --sidebar-width: 280px;
}

/* AuthenticatedApp Layout */
.medical-training-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* App Layout */
.app-layout {
  display: flex;
  flex: 1;
  position: relative;
  padding-top: var(--nav-height); /* Nav 공간 확보 */
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: margin-left 0.3s ease;
}

/* 데스크탑 레이아웃 */
@media (min-width: 769px) {
  .main-content {
    margin-left: var(--sidebar-width); /* 사이드바 너비만큼 여백 */
  }
  
  /* 사이드바가 접힌 상태 */
  .main-content.sidebar-collapsed {
    margin-left: 0; /* 사이드바가 닫히면 여백 제거 */
  }
}

/* 모바일 레이아웃 */
@media (max-width: 768px) {
  .app-layout {
    padding-top: var(--nav-height-mobile); /* 모바일 Nav 높이 */
  }
}

/* Footer Styles */
.company-info-section {
  width: 100%;
  margin-top: 80px;
  border-top: 1px solid #e0e0e0;
}

.company-info-container {
  max-width: 2560px;
  margin: 0 auto;
  padding: 40px 120px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.top-info {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  width: 100%;
  gap: 24px;
}

.left-section {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.company-logo {
  height: 40px;
}

.company-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-number {
  font-size: 18px;
  font-weight: 700;
  color: #333;
}

.business-hours {
  font-size: 14px;
  color: #666;
}

.policy-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.policy-link {
  font-size: 14px;
  color: #666;
  text-decoration: none;
  padding: 8px 12px;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
  transition: all 0.3s ease;
  cursor: pointer;
  white-space: nowrap;
}

.policy-link:hover {
  background-color: #f5f5f5;
}

.company-details {
  width: 100%;
  margin-top: 20px;
  font-size: 13px;
  color: #666;
  line-height: 1.8;
}

.copyright {
  font-size: 13px;
  color: #999;
}

/* 반응형 */
@media (max-width: 768px) {
  .company-info-container {
    padding: 24px 20px;
    gap: 24px;
  }
  
  .top-info {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
  
  .left-section {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .company-contact {
    gap: 4px;
  }
  
  .policy-link {
    font-size: 12px;
    padding: 6px 8px;
  }
  
  .company-details {
    margin-top: 16px;
    font-size: 12px;
    line-height: 1.6;
  }
  
  .copyright {
    margin-top: 16px;
  }
}/* SmileBogun Design System - CSS Custom Properties */
:root {
  /* Primary Colors */
  --color-primary: #3F51B5;
  --color-primary-light: #7986CB;
  --color-primary-dark: #303F9F;
  --color-primary-contrast: #FFFFFF;

  /* Secondary Colors */
  --color-secondary: #FF5722;
  --color-secondary-light: #FF8A65;
  --color-secondary-dark: #E64A19;
  --color-secondary-contrast: #FFFFFF;

  /* Surface & Background Colors */
  --color-surface: #FFFFFF;
  --color-background: #FAFAFA;
  --color-error: #F44336;
  --color-error-light: #E57373;
  --color-error-dark: #D32F2F;

  /* Text Colors */
  --color-on-primary: #FFFFFF;
  --color-on-secondary: #FFFFFF;
  --color-on-surface: #212121;
  --color-on-background: #212121;
  --color-on-error: #FFFFFF;

  /* Text Variants */
  --color-text-primary: #212121;
  --color-text-secondary: #757575;
  --color-text-disabled: #BDBDBD;
  --color-text-hint: #9E9E9E;

  /* Divider & Border */
  --color-divider: #E0E0E0;
  --color-border: #EEEEEE;

  /* Success & Warning Colors */
  --color-success: #4CAF50;
  --color-success-light: #81C784;
  --color-success-dark: #388E3C;
  --color-warning: #FF9800;
  --color-warning-light: #FFB74D;
  --color-warning-dark: #F57C00;
  --color-info: #2196F3;
  --color-info-light: #64B5F6;
  --color-info-dark: #1976D2;

  /* Typography Scale */
  --font-family-display: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-family-body: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

  /* Font Sizes */
  --font-size-display-large: 3.5rem;    /* 56px */
  --font-size-display-medium: 2.8125rem; /* 45px */
  --font-size-display-small: 2.25rem;   /* 36px */
  --font-size-headline-large: 2rem;     /* 32px */
  --font-size-headline-medium: 1.75rem; /* 28px */
  --font-size-headline-small: 1.5rem;   /* 24px */
  --font-size-title-large: 1.375rem;    /* 22px */
  --font-size-title-medium: 1rem;       /* 16px */
  --font-size-title-small: 0.875rem;    /* 14px */
  --font-size-body-large: 1rem;         /* 16px */
  --font-size-body-medium: 0.875rem;    /* 14px */
  --font-size-body-small: 0.75rem;      /* 12px */
  --font-size-label-large: 0.875rem;    /* 14px */
  --font-size-label-medium: 0.75rem;    /* 12px */
  --font-size-label-small: 0.6875rem;   /* 11px */

  /* Line Heights */
  --line-height-display: 1.2;
  --line-height-headline: 1.3;
  --line-height-title: 1.4;
  --line-height-body: 1.5;
  --line-height-label: 1.4;

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Letter Spacing */
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;

  /* Spacing Scale */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;    /* 8px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  --spacing-3xl: 4rem;     /* 64px */
  --spacing-4xl: 6rem;     /* 96px */

  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.25rem;    /* 4px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-2xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* 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;
  --z-toast: 1080;

  /* Breakpoints for reference */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* Force light theme - disable dark mode support */
/* Dark mode is intentionally disabled to maintain consistent light appearance */

/* Base reset and typography */
* {
  box-sizing: border-box;
}

html {
  font-family: var(--font-family-body);
  font-size: 16px;
  line-height: var(--line-height-body);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Force light theme colors */
  color-scheme: light only;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  /* Force light theme colors - override any dark mode settings */
  background-color: #FAFAFA !important;
  color: #212121 !important;
}

/* Typography utility classes */
.text-display-large {
  font-size: var(--font-size-display-large);
  line-height: var(--line-height-display);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-tight);
}

.text-display-medium {
  font-size: var(--font-size-display-medium);
  line-height: var(--line-height-display);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-tight);
}

.text-display-small {
  font-size: var(--font-size-display-small);
  line-height: var(--line-height-display);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-normal);
}

.text-headline-large {
  font-size: var(--font-size-headline-large);
  line-height: var(--line-height-headline);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-normal);
}

.text-headline-medium {
  font-size: var(--font-size-headline-medium);
  line-height: var(--line-height-headline);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-normal);
}

.text-headline-small {
  font-size: var(--font-size-headline-small);
  line-height: var(--line-height-headline);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-normal);
}

.text-title-large {
  font-size: var(--font-size-title-large);
  line-height: var(--line-height-title);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-normal);
}

.text-title-medium {
  font-size: var(--font-size-title-medium);
  line-height: var(--line-height-title);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
}

.text-title-small {
  font-size: var(--font-size-title-small);
  line-height: var(--line-height-title);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
}

.text-body-large {
  font-size: var(--font-size-body-large);
  line-height: var(--line-height-body);
  font-weight: var(--font-weight-regular);
  letter-spacing: var(--letter-spacing-normal);
}

.text-body-medium {
  font-size: var(--font-size-body-medium);
  line-height: var(--line-height-body);
  font-weight: var(--font-weight-regular);
  letter-spacing: var(--letter-spacing-wide);
}

.text-body-small {
  font-size: var(--font-size-body-small);
  line-height: var(--line-height-body);
  font-weight: var(--font-weight-regular);
  letter-spacing: var(--letter-spacing-wide);
}

.text-label-large {
  font-size: var(--font-size-label-large);
  line-height: var(--line-height-label);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
}

.text-label-medium {
  font-size: var(--font-size-label-medium);
  line-height: var(--line-height-label);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
}

.text-label-small {
  font-size: var(--font-size-label-small);
  line-height: var(--line-height-label);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
}/* Accessibility enhancements and WCAG compliance */

/* 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 links for keyboard navigation */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  border-radius: var(--radius-sm);
  z-index: var(--z-tooltip);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-body-medium);
  transition: top var(--transition-fast);
}

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

/* Focus indicators */
*:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Enhanced focus for interactive elements */
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--color-primary-light);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #000080;
    --color-secondary: #800000;
    --color-error: #800000;
    --color-success: #006400;
    --color-warning: #FF8C00;
    --color-info: #000080;
    --color-text-primary: #000000;
    --color-text-secondary: #000000;
    --color-border: #000000;
    --color-divider: #000000;
  }
  
  /* Stronger borders and outlines */
  button,
  input,
  select,
  textarea,
  .action-card,
  .auth-state__content,
  .activity-list {
    border-width: 2px;
  }
  
  /* Enhanced focus indicators */
  *:focus-visible {
    outline-width: 3px;
    outline-offset: 3px;
  }
  
  /* Remove subtle shadows that may not be visible */
  .action-card:hover,
  .auth-state__content {
    box-shadow: none;
  }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  /* Remove hover transforms */
  .action-card:hover,
  .btn:hover:not(:disabled) {
    transform: none;
  }
  
  /* Simplify loading animations */
  .loading-spinner__icon,
  .btn__spinner-icon {
    animation: none;
  }
  
  .loading-spinner__path,
  .btn__spinner-circle {
    animation: none;
    stroke-dasharray: none;
    stroke-dashoffset: 0;
  }
}

/* Large text support */
@media (min-resolution: 120dpi) {
  body {
    font-size: 18px;
  }
}

/* Touch target sizing for mobile accessibility */
@media (pointer: coarse) {
  button,
  a,
  input,
  select,
  textarea,
  [role="button"],
  [tabindex] {
    min-height: 44px;
    min-width: 44px;
  }
  
  .btn--sm {
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* Print accessibility */
@media print {
  /* Ensure sufficient color contrast for printing */
  .auth-state__content,
  .action-card {
    border: 2px solid #000000;
    background: white;
    color: black;
  }
  
  /* Hide interactive elements that don't work in print */
  button,
  .btn,
  .app-footer__nav {
    display: none;
  }
  
  /* Expand collapsed content */
  details {
    border: 1px solid #000;
    padding: var(--spacing-sm);
  }
  
  details[open] summary {
    border-bottom: 1px solid #000;
    margin-bottom: var(--spacing-sm);
  }
  
  /* Show URLs for links */
  a[href]:after {
    content: " (" attr(href) ")";
    font-size: smaller;
    color: #666;
  }
  
  /* Skip internal fragment links */
  a[href^="#"]:after {
    content: "";
  }
}

/* Color blindness support */
/* Ensure information is not conveyed by color alone */
.auth-state--error .auth-state__icon::before {
  content: "⚠";
  position: absolute;
  font-size: 0.75rem;
  top: -2px;
  right: -2px;
  background: white;
  border-radius: 50%;
  width: 1rem;
  height: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-state--authenticated .auth-state__icon::before {
  content: "✓";
  position: absolute;
  font-size: 0.75rem;
  top: -2px;
  right: -2px;
  background: white;
  border-radius: 50%;
  width: 1rem;
  height: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Dark mode accessibility improvements */
@media (prefers-color-scheme: dark) {
  /* Ensure sufficient contrast in dark mode */
  :root {
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #CCCCCC;
    --color-text-disabled: #888888;
    --color-text-hint: #AAAAAA;
  }
  
  /* Adjust focus indicators for dark mode */
  *:focus-visible {
    outline-color: var(--color-primary-light);
  }
  
  button:focus-visible,
  input:focus-visible,
  select:focus-visible,
  textarea:focus-visible,
  a:focus-visible,
  [tabindex]:focus-visible {
    box-shadow: 0 0 0 4px var(--color-primary-dark);
  }
}

/* Keyboard navigation enhancements */
.keyboard-user button:focus,
.keyboard-user a:focus,
.keyboard-user input:focus,
.keyboard-user select:focus,
.keyboard-user textarea:focus,
.keyboard-user [tabindex]:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Show focus indicators when navigating with keyboard */
body:not(.mouse-user) *:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Voice control and speech recognition support */
[data-voice-command] {
  position: relative;
}

[data-voice-command]::after {
  content: attr(data-voice-command);
  position: absolute;
  top: -1.5rem;
  left: 0;
  font-size: 0.75rem;
  color: var(--color-text-hint);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

[data-voice-command]:focus::after {
  opacity: 1;
}

/* Language direction support */
[dir="rtl"] .app-header__container {
  direction: rtl;
}

[dir="rtl"] .quick-actions__grid {
  direction: rtl;
}

[dir="rtl"] .activity-item {
  direction: rtl;
}

/* Error message accessibility */
[role="alert"] {
  color: var(--color-error);
  font-weight: var(--font-weight-medium);
}

[aria-live="polite"] {
  position: relative;
}

[aria-live="assertive"] {
  color: var(--color-error);
  font-weight: var(--font-weight-medium);
}

/* Loading state accessibility */
[aria-busy="true"] {
  cursor: progress;
}

/* Form validation accessibility */
.field-error {
  color: var(--color-error);
  font-size: var(--font-size-body-small);
  margin-top: var(--spacing-xs);
}

.field-error::before {
  content: "⚠ ";
  font-weight: bold;
}

/* Tooltip accessibility */
[role="tooltip"] {
  position: absolute;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-sm);
  font-size: var(--font-size-body-small);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-tooltip);
  max-width: 200px;
}

/* Menu and navigation accessibility */
[role="menu"] {
  list-style: none;
  padding: 0;
  margin: 0;
}

[role="menuitem"] {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-primary);
  text-decoration: none;
  cursor: pointer;
}

[role="menuitem"]:hover,
[role="menuitem"]:focus {
  background-color: var(--color-primary-light);
  color: var(--color-on-primary);
}

[role="menuitem"][aria-disabled="true"] {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}/* Responsive design utilities and breakpoint management */

/* Container utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container--narrow {
  max-width: 800px;
}

.container--wide {
  max-width: 1400px;
}

/* Responsive grid system */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

.grid--auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--auto-fill {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* Flexible layouts */
.flex {
  display: flex;
}

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

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

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

.flex--between {
  justify-content: space-between;
}

.flex--around {
  justify-content: space-around;
}

.flex--evenly {
  justify-content: space-evenly;
}

/* Responsive spacing */
.spacing--xs { gap: var(--spacing-xs); }
.spacing--sm { gap: var(--spacing-sm); }
.spacing--md { gap: var(--spacing-md); }
.spacing--lg { gap: var(--spacing-lg); }
.spacing--xl { gap: var(--spacing-xl); }
.spacing--2xl { gap: var(--spacing-2xl); }

/* Responsive text alignment */
.text--left { text-align: left; }
.text--center { text-align: center; }
.text--right { text-align: right; }

/* Responsive visibility utilities */
.hidden { display: none !important; }
.visible { display: block !important; }

/* Mobile-first responsive breakpoints */

/* Small devices (landscape phones, 640px and up) */
@media (min-width: 640px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
  
  .grid {
    gap: var(--spacing-xl);
  }
  
  /* Responsive grid for small screens */
  .sm\:grid--cols-1 { grid-template-columns: 1fr; }
  .sm\:grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
  .sm\:grid--cols-3 { grid-template-columns: repeat(3, 1fr); }
  
  /* Responsive flex for small screens */
  .sm\:flex { display: flex; }
  .sm\:flex--column { flex-direction: column; }
  .sm\:flex--row { flex-direction: row; }
  
  /* Responsive text alignment */
  .sm\:text--left { text-align: left; }
  .sm\:text--center { text-align: center; }
  .sm\:text--right { text-align: right; }
  
  /* Responsive visibility */
  .sm\:hidden { display: none !important; }
  .sm\:visible { display: block !important; }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-2xl);
  }
  
  /* Responsive grid for medium screens */
  .md\:grid--cols-1 { grid-template-columns: 1fr; }
  .md\:grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid--cols-3 { grid-template-columns: repeat(3, 1fr); }
  .md\:grid--cols-4 { grid-template-columns: repeat(4, 1fr); }
  
  /* Responsive flex for medium screens */
  .md\:flex { display: flex; }
  .md\:flex--column { flex-direction: column; }
  .md\:flex--row { flex-direction: row; }
  
  /* Responsive text alignment */
  .md\:text--left { text-align: left; }
  .md\:text--center { text-align: center; }
  .md\:text--right { text-align: right; }
  
  /* Responsive visibility */
  .md\:hidden { display: none !important; }
  .md\:visible { display: block !important; }
}

/* Large devices (desktops, 1024px and up) */
@media (min-width: 1024px) {
  /* Responsive grid for large screens */
  .lg\:grid--cols-1 { grid-template-columns: 1fr; }
  .lg\:grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
  .lg\:grid--cols-3 { grid-template-columns: repeat(3, 1fr); }
  .lg\:grid--cols-4 { grid-template-columns: repeat(4, 1fr); }
  .lg\:grid--cols-5 { grid-template-columns: repeat(5, 1fr); }
  .lg\:grid--cols-6 { grid-template-columns: repeat(6, 1fr); }
  
  /* Responsive flex for large screens */
  .lg\:flex { display: flex; }
  .lg\:flex--column { flex-direction: column; }
  .lg\:flex--row { flex-direction: row; }
  
  /* Responsive text alignment */
  .lg\:text--left { text-align: left; }
  .lg\:text--center { text-align: center; }
  .lg\:text--right { text-align: right; }
  
  /* Responsive visibility */
  .lg\:hidden { display: none !important; }
  .lg\:visible { display: block !important; }
}

/* Extra large devices (large desktops, 1280px and up) */
@media (min-width: 1280px) {
  /* Responsive grid for extra large screens */
  .xl\:grid--cols-1 { grid-template-columns: 1fr; }
  .xl\:grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
  .xl\:grid--cols-3 { grid-template-columns: repeat(3, 1fr); }
  .xl\:grid--cols-4 { grid-template-columns: repeat(4, 1fr); }
  .xl\:grid--cols-5 { grid-template-columns: repeat(5, 1fr); }
  .xl\:grid--cols-6 { grid-template-columns: repeat(6, 1fr); }
  
  /* Responsive flex for extra large screens */
  .xl\:flex { display: flex; }
  .xl\:flex--column { flex-direction: column; }
  .xl\:flex--row { flex-direction: row; }
  
  /* Responsive text alignment */
  .xl\:text--left { text-align: left; }
  .xl\:text--center { text-align: center; }
  .xl\:text--right { text-align: right; }
  
  /* Responsive visibility */
  .xl\:hidden { display: none !important; }
  .xl\:visible { display: block !important; }
}

/* 2XL devices (larger desktops, 1536px and up) */
@media (min-width: 1536px) {
  .container {
    padding: 0 var(--spacing-3xl);
  }
  
  /* Responsive grid for 2XL screens */
  .2xl\:grid--cols-1 { grid-template-columns: 1fr; }
  .2xl\:grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
  .2xl\:grid--cols-3 { grid-template-columns: repeat(3, 1fr); }
  .2xl\:grid--cols-4 { grid-template-columns: repeat(4, 1fr); }
  .2xl\:grid--cols-5 { grid-template-columns: repeat(5, 1fr); }
  .2xl\:grid--cols-6 { grid-template-columns: repeat(6, 1fr); }
  
  /* Responsive text alignment */
  .2xl\:text--left { text-align: left; }
  .2xl\:text--center { text-align: center; }
  .2xl\:text--right { text-align: right; }
  
  /* Responsive visibility */
  .2xl\:hidden { display: none !important; }
  .2xl\:visible { display: block !important; }
}

/* Mobile-specific adjustments */
@media (max-width: 639px) {
  /* Stack elements on mobile */
  .mobile-stack {
    flex-direction: column !important;
  }
  
  /* Full width on mobile */
  .mobile-full {
    width: 100% !important;
  }
  
  /* Hide on mobile */
  .mobile-hidden {
    display: none !important;
  }
  
  /* Reduce padding on mobile */
  .mobile-compact {
    padding: var(--spacing-sm) !important;
  }
  
  /* Smaller text on mobile */
  .mobile-text-sm {
    font-size: var(--font-size-body-small) !important;
  }
}

/* Tablet-specific adjustments */
@media (min-width: 640px) and (max-width: 1023px) {
  .tablet-stack {
    flex-direction: column !important;
  }
  
  .tablet-hidden {
    display: none !important;
  }
}

/* Desktop-specific adjustments */
@media (min-width: 1024px) {
  .desktop-only {
    display: block !important;
  }
  
  .desktop-flex {
    display: flex !important;
  }
  
  .desktop-grid {
    display: grid !important;
  }
}

/* Responsive images and media */
.responsive-img {
  max-width: 100%;
  height: auto;
  display: block;
}

.responsive-video {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
}

.responsive-video iframe,
.responsive-video video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Responsive typography scaling */
@media (max-width: 639px) {
  :root {
    --font-size-display-large: 2.5rem;
    --font-size-display-medium: 2rem;
    --font-size-display-small: 1.75rem;
    --font-size-headline-large: 1.5rem;
    --font-size-headline-medium: 1.375rem;
    --font-size-headline-small: 1.25rem;
  }
}

@media (min-width: 640px) and (max-width: 1023px) {
  :root {
    --font-size-display-large: 3rem;
    --font-size-display-medium: 2.5rem;
    --font-size-display-small: 2rem;
  }
}

/* Responsive spacing adjustments */
@media (max-width: 639px) {
  :root {
    --spacing-xs: 0.125rem;
    --spacing-sm: 0.375rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
    --spacing-3xl: 2.5rem;
    --spacing-4xl: 3rem;
  }
}

/* Print responsiveness */
@media print {
  .container {
    max-width: none;
    padding: 0;
  }
  
  .print-hidden {
    display: none !important;
  }
  
  .print-visible {
    display: block !important;
  }
  
  /* Ensure content fits on page */
  .auth-state,
  .authenticated-app {
    min-height: auto;
  }
  
  /* Simplify layout for printing */
  .quick-actions__grid {
    grid-template-columns: 1fr 1fr;
    page-break-inside: avoid;
  }
  
  .action-card {
    page-break-inside: avoid;
    box-shadow: none;
    border: 1px solid #000;
  }
}

/* Landscape orientation adjustments */
@media (orientation: landscape) and (max-width: 1023px) {
  .landscape-compact {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .landscape-row {
    flex-direction: row !important;
  }
}

/* Portrait orientation adjustments */
@media (orientation: portrait) {
  .portrait-stack {
    flex-direction: column !important;
  }
  
  .portrait-center {
    text-align: center !important;
  }
}