/* ========================================
   Web IoT Platform - Main Stylesheet
   ======================================== */

/* ===== 1. 基础样式 ===== */
:root {
  /* 字体 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  
  /* 颜色 */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-background: #f8fafc;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-white: #ffffff;
  --color-success: #10b981;
  --color-success-bg: #ecfdf5;
  --color-error: #ef4444;
  --color-error-bg: #fef2f2;
  --color-disabled-bg: #f1f5f9;
  
  /* 间距 */
  --spacing-unit: 8px;
  --spacing-xs: calc(var(--spacing-unit) * 0.5);  /* 4px */
  --spacing-sm: var(--spacing-unit);              /* 8px */
  --spacing-md: calc(var(--spacing-unit) * 2);    /* 16px */
  --spacing-lg: calc(var(--spacing-unit) * 3);    /* 24px */
  --spacing-xl: calc(var(--spacing-unit) * 4);    /* 32px */
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 4px 20px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.5;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== 2. 页面头部 ===== */
.site-header {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: white;
  padding: 20px 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-title {
  font-size: 24px;
  font-weight: 600;
  margin: 0;
}

/* ===== 3. 响应式分栏布局 ===== */
.main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px;
}

.content-wrapper {
  display: grid;
  gap: 40px;
  align-items: start;
}

/* 大屏 (≥1920px)：左右分栏 */
@media (min-width: 1920px) {
  .content-wrapper {
    grid-template-columns: 1fr 480px;
  }
}

/* 中等屏幕 (769px-1919px)：上下堆叠 */
@media (min-width: 769px) and (max-width: 1919px) {
  .content-wrapper {
    grid-template-columns: 1fr;
  }
}

/* 移动端 (≤768px)：单列紧凑布局 */
@media (max-width: 768px) {
  .main-content {
    padding: 16px;
  }
  
  .content-wrapper {
    gap: 24px;
  }
}

/* ===== 4. 主页宣传区域样式 ===== */
.hero-section {
  background: white;
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-xl);
}

@media (max-width: 768px) {
  .hero-section {
    padding: 16px;
    border-radius: var(--radius-lg);
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* 标题样式 */
.hero-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  line-height: 1.3;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 22px;
  }
}

/* 副标题样式 */
.hero-subtitle {
  font-size: 16px;
  color: var(--color-text-muted);
  margin: 0;
}

/* 区域标题样式 */
.section-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
}

/* ===== 4.1 优势列表样式 ===== */
.advantages-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.advantage-item {
  display: flex;
  gap: 12px;
  padding: 16px;
  background: var(--color-background);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-primary);
}

.advantage-icon {
  color: var(--color-success);
  font-weight: bold;
  font-size: 18px;
  flex-shrink: 0;
}

.advantage-text strong {
  display: block;
  color: var(--color-text);
  margin-bottom: 4px;
}

.advantage-text p {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ===== 4.2 服务流程样式 ===== */
.process-steps {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.process-step {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--color-background);
  border-radius: var(--radius-lg);
  flex: 1;
  min-width: 140px;
}

.step-number {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
}

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

.step-text strong {
  font-size: 14px;
  color: var(--color-text);
}

.step-text span {
  font-size: 12px;
  color: var(--color-text-muted);
}

.process-arrow {
  color: var(--color-primary);
  font-size: 20px;
  font-weight: bold;
}

@media (max-width: 768px) {
  .process-steps {
    flex-direction: column;
  }
  
  .process-arrow {
    transform: rotate(90deg);
  }
  
  .process-step {
    min-width: auto;
    width: 100%;
  }
}

/* ===== 4.3 "立即开始配置"按钮样式 ===== */
.btn-start {
  align-self: flex-start;
  padding: 14px 32px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

@media (max-width: 768px) {
  .btn-start {
    width: 100%;
    padding: 14px 24px;
  }
}

/* ===== 5. 配置区域样式 ===== */
.config-section {
  background: white;
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-xl);
}

@media (max-width: 768px) {
  .config-section {
    padding: 16px;
    border-radius: var(--radius-lg);
  }
}

.config-container {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* 5.1 Tab切换样式 */
.config-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 20px;
  background: var(--color-background);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
}

.config-tab {
  padding: 14px 28px;
  border: none;
  background: transparent;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
}

.config-tab:hover {
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.05);
}

.config-tab.active {
  color: var(--color-primary);
  background: white;
}

.config-tab.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-primary);
  border-radius: 3px 3px 0 0;
}

.config-tab .tab-icon {
  font-size: 16px;
  font-weight: 700;
}

/* Tab内容区域 */
.tab-content {
  min-height: 200px;
  background: white;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.tab-pane {
  display: none;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

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

/* 配置项通用样式 - 更清晰的视觉区分 */
.config-item {
  margin-bottom: 24px;
  padding: 20px;
  background: var(--color-background);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all 0.2s ease;
}

.config-item:hover {
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
}

.config-item-header {
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.config-item-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.config-item-label {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.config-item .required-mark {
  color: var(--color-error);
  font-size: 18px;
  font-weight: 700;
}

/* 帮助按钮样式 - 确保问号完全显示 */
.config-item .help-btn {
  width: 24px;
  height: 24px;
  min-width: 24px;
  min-height: 24px;
  border-radius: 50%;
  border: 2px solid var(--color-primary);
  background: var(--color-primary);
  color: white;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  margin-left: 6px;
  padding: 0;
  line-height: 1;
  box-sizing: border-box;
  overflow: hidden;
  vertical-align: middle;
}

.config-item .help-btn:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: scale(1.1);
}

/* 配置项描述 - 默认隐藏 */
.config-item-desc {
  display: none;
}

/* 配置项内容区域 */
.config-item-content {
  margin-top: 0;
}

/* 5.2 必选配置区容器样式 - 已移除，使用Tab替代 */
/* 5.3 可选配置区容器样式 - 已移除，使用Tab替代 */

/* ===== 6. 进度指示器样式 ===== */
.progress-steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.step-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-border);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
}

.step.active .step-circle {
  background: var(--color-primary);
  color: white;
}

.step.completed .step-circle {
  background: var(--color-success);
  color: white;
}

.step-label {
  font-size: 11px;
  color: var(--color-text-muted);
}

.step.active .step-label {
  color: var(--color-primary);
  font-weight: 500;
}

@media (max-width: 768px) {
  .progress-steps {
    flex-wrap: wrap;
    gap: 8px;
  }
  
  .step {
    min-width: 45%;
  }
}

/* ===== 7. 配置区域内部样式 ===== */
.config-area .step-header h2 {
  font-size: 18px;
  margin: 0 0 8px 0;
}

.config-area .step-description p {
  color: var(--color-text-muted);
  font-size: 14px;
  margin: 0 0 16px 0;
}

/* ===== 8. 配置项组件样式 ===== */
.options-container {
  display: grid;
  gap: var(--spacing-md);
}

/* 8.1 选项组样式 - 简洁按钮式显示 */
.option-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.option-group.checkbox-group,
.option-group.radio-group {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

/* 选项卡片样式 - 简洁展示 */
.option-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.25s ease;
  min-height: 48px;
  font-weight: 500;
}

.option-label:hover {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, #f0f7ff 0%, #e8f4ff 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.option-label.selected,
.option-label:has(input:checked) {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, #e0edff 0%, #d0e5ff 100%);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

/* 复选框/单选框样式 */
.option-label input[type="checkbox"],
.option-label input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

/* 选项文本 - 简洁显示 */
.option-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

/* 选项描述 - 隐藏，仅在帮助弹窗中显示 */
.option-desc {
  display: none;
}

/* 选中状态样式 */
.option-label.selected .option-text,
.option-label:has(input:checked) .option-text {
  color: var(--color-primary);
  font-weight: 700;
}

/* 下拉选择框样式 */
.config-select {
  width: 100%;
  padding: 14px 40px 14px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: white url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat right 14px center;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s ease;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

.config-select:hover {
  border-color: var(--color-primary);
}

.config-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.config-select option {
  padding: 12px;
  font-weight: 500;
}

/* 芯片选择器样式 */
.chip-select-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chip-select-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chip-select-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

/* 下拉框提示文字 */
.dropdown-hint {
  padding: 12px 16px;
  background: var(--color-background);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 14px;
  font-weight: 500;
}

/* 无选项提示 */
.no-options {
  padding: 16px;
  background: var(--color-error-bg);
  border-radius: var(--radius-md);
  color: var(--color-error);
  font-size: 14px;
  text-align: center;
}

/* 8.4 产品子类型下拉框样式（条件显示） */
.subtype-select-container {
  margin-top: var(--spacing-md);
  animation: fadeIn 0.3s ease;
}

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

/* ===== 9. 选项卡片样式 ===== */
.option-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-weight: 500;
}

/* 悬停状态 */
.option-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* 选中状态 */
.option-card.selected {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* 禁用状态 */
.option-card.disabled,
.option-card:disabled {
  background-color: var(--color-disabled-bg);
  color: var(--color-text-muted);
  cursor: not-allowed;
  pointer-events: none;
}

/* ===== 10. 帮助文档按钮样式 ===== */
.help-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.help-link a {
  color: var(--color-primary);
  text-decoration: none;
  font-size: 14px;
}

.help-link a:hover {
  text-decoration: underline;
}

.help-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
  background: var(--color-white);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: bold;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

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

/* 10.1 提示框/模态框样式 */
.help-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
}

.help-modal-visible {
  display: flex;
}

.help-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
}

.help-modal-content {
  position: relative;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 500px;
  max-height: 70vh;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.help-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  position: relative;
}

.help-modal-header h3 {
  margin: 0;
  font-size: 18px;
  color: white;
  font-weight: 600;
}

.help-modal-close {
  position: absolute;
  right: 12px;
  top: 12px;
  width: 32px;
  height: 32px;
  border: none;
  background: white;
  color: #dc2626;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.2s ease;
  padding: 0;
  line-height: 1;
  transform: none;
}

.help-modal-close:hover {
  background: #dc2626;
  color: white;
  transform: scale(1.1);
}

.help-modal-body {
  padding: 16px;
  overflow-y: auto;
  flex: 1;
}

/* 帮助选项列表 */
.help-options-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.help-option-item {
  padding: 12px;
  background: var(--color-background);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.help-option-label {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.help-option-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* 通用帮助文本 */
.help-general {
  padding: 12px;
  background: #f0f7ff;
  border-radius: var(--radius-md);
  border: 1px solid #d0e8ff;
}

.help-general h4 {
  margin: 0 0 8px 0;
  color: var(--color-primary);
  font-size: 14px;
}

.help-general ul {
  margin: 0;
  padding-left: 16px;
}

.help-general li {
  margin-bottom: 4px;
  color: var(--color-text);
  font-size: 13px;
  line-height: 1.4;
}

.help-general li strong {
  color: var(--color-primary);
}

.help-empty {
  text-align: center;
  color: var(--color-text-muted);
  padding: 24px;
}

/* 子类型选择器 - 使用卡片式布局 */
.subtype-selector {
  margin-top: 12px;
  padding: 12px;
  background: white;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  animation: fadeIn 0.2s ease;
}

@media (max-width: 768px) {
  .help-modal-content {
    width: 95%;
    max-height: 90vh;
  }
  
  .help-modal-body {
    padding: var(--spacing-md);
  }
  
  .help-option-item {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* ===== 11. 按钮样式 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 2px solid transparent;
  min-height: 44px;
  min-width: 44px;
  text-decoration: none;
}

/* 主按钮 */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

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

/* 辅助按钮 */
.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

/* 成功按钮 */
.btn-success {
  background-color: var(--color-success);
  color: white;
  border-color: var(--color-success);
}

.btn-success:hover {
  background-color: #059669;
  border-color: #059669;
}

/* 危险按钮 */
.btn-danger {
  background-color: var(--color-error);
  color: white;
  border-color: var(--color-error);
}

.btn-danger:hover {
  background-color: #dc2626;
  border-color: #dc2626;
}

/* 禁用按钮 */
.btn:disabled,
.btn-disabled {
  background-color: var(--color-disabled-bg);
  color: var(--color-text-muted);
  cursor: not-allowed;
  pointer-events: none;
}

/* 生成按钮 */
.btn-generate {
  width: 100%;
  padding: 16px;
  font-size: 18px;
}

/* 操作按钮 */
.action-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 16px;
}

@media (max-width: 768px) {
  .action-buttons {
    flex-direction: column;
  }
}

/* ===== 12. 预览区域样式 ===== */
.preview-area {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.preview-header {
  background: var(--color-background);
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.preview-header h3 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
}

.preview-content {
  padding: 16px;
  max-height: 300px;
  overflow: auto;
  background: #1e293b;
}

.preview-content pre {
  margin: 0;
  color: #e2e8f0;
  font-size: 12px;
  font-family: 'Monaco', 'Menlo', monospace;
}

.preview-actions {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--color-border);
}

.preview-actions .btn {
  flex: 1;
  padding: 10px;
  font-size: 14px;
}

@media (max-width: 768px) {
  .preview-actions {
    flex-direction: column;
  }
}

/* ===== 13. 任务状态区域样式 ===== */
.task-status {
  background: white;
  border-radius: var(--radius-xl);
  padding: 24px;
  margin-top: 24px;
  box-shadow: var(--shadow-xl);
}

.task-header h3 {
  margin: 0 0 16px 0;
  font-size: 18px;
}

.task-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
}

.estimate-time {
  color: var(--color-text-muted);
  font-size: 14px;
}

.task-progress {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.progress-bar-container {
  flex: 1;
  height: 8px;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

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

.task-md5 {
  padding: 12px;
  background: var(--color-background);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  font-family: monospace;
  font-size: 12px;
}

.md5-label {
  color: var(--color-text-muted);
}

.md5-value {
  color: var(--color-text);
}

.task-actions {
  display: flex;
  gap: 12px;
}

.task-actions .btn {
  flex: 1;
}

.download-progress {
  margin-top: 12px;
}

/* ===== 14. 提示框和弹窗样式 ===== */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  border: 1px solid;
  margin-bottom: var(--spacing-md);
}

/* 成功提示 */
.alert-success {
  background-color: var(--color-success-bg);
  border-color: var(--color-success);
  color: #065f46;
}

/* 错误提示 */
.alert-error {
  background-color: var(--color-error-bg);
  border-color: var(--color-error);
  color: #991b1b;
}

/* 加载中弹窗 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  max-width: 90%;
  max-height: 90%;
  overflow: auto;
  box-shadow: var(--shadow-lg);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ===== 15. 进度条样式 ===== */
.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: width 0.3s ease;
}

/* 带标签的进度条 */
.progress-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--color-text-muted);
}

/* ===== 16. 触摸友好 ===== */
@media (max-width: 768px) {
  /* 移动端所有交互元素最小尺寸 */
  .btn,
  .option-card,
  .step-node,
  input[type="checkbox"],
  input[type="radio"],
  .config-select {
    min-width: 44px;
    min-height: 44px;
  }
  
  /* 增大移动端触摸区域 */
  .option-card {
    padding: var(--spacing-md) var(--spacing-lg);
  }
  
  .btn {
    padding: 14px 28px;
  }
  
  .config-select {
    padding: 12px 16px;
    padding-right: 40px;
  }
}

/* 触摸友好的链接和按钮 */
a,
button,
input,
select,
textarea {
  touch-action: manipulation;
}

/* ===== 17. 底部版权信息 ===== */
.footer {
  text-align: center;
  padding: 24px;
  color: var(--color-text-muted);
  font-size: 14px;
  border-top: 1px solid var(--color-border);
  margin-top: 40px;
}

/* ===== 18. 辅助工具类 ===== */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

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

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

/* ===== 19. 资源状态提示样式 ===== */
.resource-status {
  position: fixed;
  top: 10px;
  display: none; /* 默认隐藏 */
  right: 10px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  z-index: 10000;
  max-width: 320px;
  font-family: var(--font-family);
  font-size: 12px;
}

.resource-status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  border-bottom: 1px solid #eee;
  background: #f8f9fa;
  border-radius: 8px 8px 0 0;
}

.resource-status-title {
  font-weight: 600;
  color: #333;
}

.resource-status-badge {
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
}

.badge-success {
  background: #d4edda;
  color: #155724;
}

.badge-warning {
  background: #fff3cd;
  color: #856404;
}

.resource-status-list {
  list-style: none;
  margin: 0;
  padding: 8px 0;
  max-height: 200px;
  overflow-y: auto;
}

.resource-status-list li {
  padding: 4px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-icon {
  font-weight: bold;
  width: 16px;
  text-align: center;
}

.status-loaded {
  color: #28a745;
}

.status-failed {
  color: #dc3545;
}
/* ===== 子类型卡片式布局 ===== */
.subtype-cards {
  margin-top: 12px;
  padding: 12px;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.subtype-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 10px;
}

.subtype-options {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
}

.subtype-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

.subtype-card:hover {
  border-color: var(--color-primary);
  background: #f0f7ff;
}

.subtype-card.selected {
  border-color: var(--color-primary);
  background: #e0edff;
}

.subtype-card input[type="radio"] {
  width: 14px;
  height: 14px;
  accent-color: var(--color-primary);
}

.subtype-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
}

.subtype-card.selected .subtype-label {
  color: var(--color-primary);
}
/* ===== Tab响应式样式 ===== */
@media (max-width: 768px) {
  .config-tabs {
    gap: 0;
  }
  
  .config-tab {
    padding: 10px 16px;
    font-size: 14px;
  }
  
  .config-item {
    padding: 12px;
    margin-bottom: 12px;
  }
  
  .config-item-label {
    font-size: 14px;
  }
  
  .config-item .help-btn {
    width: 20px;
    height: 20px;
  }
  
  .option-group.checkbox-group,
  .option-group.radio-group {
    grid-template-columns: 1fr;
  }
  
  .subtype-options {
    grid-template-columns: 1fr;
  }
}