/* These styles are generated from project.scss. */

.alert-debug {
  color: black;
  background-color: white;
  border-color: #d6e9c6;
}

.alert-error {
  color: #b94a48;
  background-color: #f2dede;
  border-color: #eed3d7;
}

/* ============================================
   学习平台样式 - 现代简约教育风格
   配色：蓝色系主色调
   ============================================ */

:root {
  --primary-blue: #2563EB;
  --primary-blue-light: #3B82F6;
  --primary-blue-lighter: #60A5FA;
  --primary-blue-dark: #1D4ED8;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
}

/* 订阅状态提示栏 */
.subscription-banner {
  background-color: #ffffff;
  border-bottom: 1px solid var(--gray-200);
  padding: 12px 0;
  margin-bottom: 0;
}

.subscription-banner .subscription-info {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.subscription-banner .badge {
  font-size: 0.8125rem;
  padding: 6px 10px;
  font-weight: 500;
  border-radius: 6px;
}

.subscription-banner .text-muted {
  color: var(--gray-500) !important;
  font-size: 0.875rem;
}

/* 主内容区域布局 */
.learning-platform {
  min-height: calc(100vh - 160px);
  background-color: var(--gray-50);
}

/* 左侧导航菜单 */
.sidebar {
  background-color: #ffffff;
  border-right: 1px solid var(--gray-200);
  min-height: calc(100vh - 160px);
}

.sidebar-sticky {
  position: sticky;
  top: 0;
}

.sidebar-header {
  padding: 20px 16px;
  border-bottom: 1px solid var(--gray-200);
  background-color: var(--primary-blue);
  color: #ffffff;
}

.sidebar-header h5 {
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.sidebar-header h5 i {
  font-size: 1.125rem;
}

/* 导航菜单项 */
.learning-nav-item {
  color: var(--gray-700);
  padding: 14px 20px;
  border-left: 3px solid transparent;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  font-size: 0.9375rem;
  text-decoration: none;
}

.learning-nav-item:hover {
  background-color: var(--gray-50);
  color: var(--primary-blue);
  border-left-color: var(--primary-blue-lighter);
}

.learning-nav-item.active {
  background-color: #EFF6FF;
  color: var(--primary-blue);
  border-left-color: var(--primary-blue);
  font-weight: 600;
}

.learning-nav-item i {
  font-size: 1.125rem;
  width: 20px;
  text-align: center;
}

/* 右侧内容区域 */
.content-area {
  padding: 0;
  min-height: calc(100vh - 160px);
  background-color: #ffffff;
  position: relative;
}

/* iframe 容器 */
#content-iframe {
  width: 100%;
  height: calc(100vh - 160px);
  min-height: 600px;
  border: none;
  display: block;
}

/* 加载状态 */
.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

/* 欢迎内容卡片 */
.welcome-card {
  padding: 24px;
}

.welcome-header {
  text-align: center;
  margin-bottom: 24px;
}

.welcome-header h1 {
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
  font-size: 1.75rem;
}

.welcome-header .lead {
  font-size: 1rem;
  color: var(--gray-500);
}

/* 功能卡片 */
.feature-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid var(--gray-200);
  height: 100%;
}

.feature-card:hover {
  border-color: var(--primary-blue-light);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--gray-500);
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 16px 0;
}

.feature-list li {
  padding: 6px 0;
  color: var(--gray-700);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
}

.feature-list li i {
  color: var(--primary-blue);
  margin-right: 8px;
  font-size: 1rem;
}

/* 动态内容区域 */
.dynamic-content {
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 错误提示 */
.error-message {
  animation: fadeIn 0.2s ease;
}

/* 移动端导航遮罩 */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 1040;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.sidebar-overlay.show {
  display: block;
  opacity: 1;
}

/* 响应式设计 */
@media (max-width: 991.98px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1050;
    width: 280px;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: 4px 0 16px rgba(0, 0, 0, 0.1);
  }

  .sidebar.show {
    transform: translateX(0);
  }

  .content-area {
    padding: 0;
  }

  #content-iframe {
    height: calc(100vh - 120px);
    min-height: 500px;
  }

  .welcome-card {
    padding: 16px;
  }

  .welcome-header h1 {
    font-size: 1.5rem;
  }
}

@media (max-width: 767.98px) {
  .subscription-banner {
    padding: 10px 12px;
  }

  .subscription-banner .subscription-info {
    font-size: 0.8125rem;
  }

  .feature-card {
    padding: 16px;
  }

  .feature-icon {
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
  }

  .feature-card h3 {
    font-size: 1rem;
  }

  #content-iframe {
    height: calc(100vh - 100px);
    min-height: 400px;
  }
}

/* Bootstrap Icons 兼容性（如果未加载） */
.bi {
  display: inline-block;
  font-family: "bootstrap-icons" !important;
  font-style: normal;
  font-weight: normal !important;
  font-variant: normal;
  text-transform: none;
  line-height: 1;
  vertical-align: -0.125em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 学习内容页面样式覆盖 */
#dynamic-content {
  width: 100%;
}

#dynamic-content body {
  padding: 0;
  margin: 0;
  background: transparent;
}

#dynamic-content .card {
  max-width: 100%;
  margin: 16px 0;
}

#dynamic-content #game-container {
  max-width: 100%;
  margin: 0 auto;
}

/* 移动端导航切换按钮 */
#sidebarToggle {
  border-color: var(--gray-300);
  color: var(--gray-700);
  background-color: #ffffff;
  font-weight: 500;
  border-radius: 8px;
  padding: 10px 16px;
}

#sidebarToggle:hover {
  background-color: var(--gray-50);
  border-color: var(--gray-400);
}

#sidebarToggle i {
  margin-right: 6px;
}

/* 订阅按钮样式 */
.subscription-banner .btn-primary {
  background-color: var(--primary-blue);
  border-color: var(--primary-blue);
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 6px;
  font-size: 0.8125rem;
}

.subscription-banner .btn-primary:hover {
  background-color: var(--primary-blue-dark);
  border-color: var(--primary-blue-dark);
}

/* Badge 样式优化 */
.badge.bg-success {
  background-color: #059669 !important;
}

.badge.bg-warning {
  background-color: #D97706 !important;
  color: #ffffff !important;
}

.badge.bg-secondary {
  background-color: var(--gray-400) !important;
}