/* DFoffer - Component Styling */
/* Header, Footer, Navigation Components */

/* ===== HEADER COMPONENTS ===== */

/* Site Header */
.site-header {
  background-color: var(--background-white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-light);
}

/* Main Navigation */
.main-navigation {
  background-color: var(--background-white);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: var(--spacing-lg);
}

/* Brand Section - Left Side */
.brand-section {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
}

.brand-link:hover {
  transform: translateY(-1px);
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  box-shadow: 0 4px 12px -4px rgba(0, 122, 255, 0.4);
  transition: all var(--transition-fast);
}

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

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin: 0;
  font-weight: 500;
  line-height: 1;
}

/* Navigation Menu - Right Side */
.nav-menu {
  display: flex;
  align-items: center;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Navigation Items with Mega Menu */
.nav-item {
  position: relative;
}

/* Navigation Links */
.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  color: var(--text-secondary);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  font-weight: 500;
  white-space: nowrap;
  font-size: 0.9rem;
}

.nav-link:hover {
  color: var(--primary-blue);
  background-color: rgba(0, 122, 255, 0.05);
}

.nav-item.active .nav-link,
.nav-item.current .nav-link {
  color: var(--primary-blue);
  background-color: rgba(0, 122, 255, 0.1);
}

.nav-link i:first-child {
  color: var(--primary-blue);
  font-size: 0.85rem;
}

.nav-arrow {
  color: var(--text-secondary) !important;
  font-size: 0.7rem !important;
  margin-left: var(--spacing-xs);
  transition: transform var(--transition-fast);
}

.nav-item.active .nav-arrow {
  transform: rotate(180deg);
}

/* Mega Menu */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--background-white);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-heavy);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-10px);
  transition: all var(--transition-smooth);
  z-index: 1000;
  width: 760px;
  margin-top: var(--spacing-sm);
}

/* Mega Menu Alignment Classes */
.mega-menu.align-left {
  left: 0;
  transform: translateY(-10px);
}

.mega-menu.align-right {
  left: auto;
  right: 0;
  transform: translateY(-10px);
}

.nav-item.active .mega-menu {
  opacity: 1;
  visibility: visible;
}

.nav-item.active .mega-menu.align-left {
  transform: translateY(0);
}

.nav-item.active .mega-menu.align-right {
  transform: translateY(0);
}

.nav-item.active .mega-menu:not(.align-left):not(.align-right) {
  transform: translateX(-50%) translateY(0);
}

.mega-menu-content {
  padding: var(--spacing-xl);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: var(--spacing-md);
  min-height: 240px;
}

.calculator-item {
  margin-bottom: 0;
}

.calculator-item a {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background: var(--gray-50);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
  position: relative;
  height: 100%;
  min-height: 100px;
}

.calculator-item a:hover {
  background: rgba(0, 122, 255, 0.05);
  border-color: var(--primary-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.calculator-item i {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.item-content {
  flex: 1;
  width: 100%;
}

.item-content h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 6px 0;
  line-height: 1.2;
}

.item-content p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.3;
}

.badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 6px;
  border-radius: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1;
}

.badge:not(.coming-soon) {
  background: rgba(76, 175, 80, 0.1);
  color: var(--success-color);
}

.badge.coming-soon {
  background: rgba(255, 152, 0, 0.1);
  color: var(--warning-color);
}

/* CTA Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-family: var(--font-system);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--accent-blue);
  transform: translateY(-1px);
  box-shadow: var(--shadow-medium);
}

/* Technical Specifications Banner */
.tech-banner {
  background: linear-gradient(135deg, var(--gray-50) 0%, rgba(0, 122, 255, 0.02) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-sm) 0;
}

.tech-banner .nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
}

.tech-specs {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
}

.spec-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}

.spec-item i {
  color: var(--primary-blue);
  font-size: 0.9rem;
}

/* ===== FOOTER COMPONENTS ===== */

.site-footer {
  background-color: var(--background-white);
  border-top: 1px solid var(--border-color);
  margin-top: var(--spacing-xxl);
}

.footer-main {
  background: linear-gradient(135deg, 
    rgba(0, 122, 255, 0.02) 0%, 
    rgba(90, 200, 250, 0.02) 100%);
  border-bottom: 1px solid var(--border-color);
}

.footer-content {
  padding: var(--spacing-xxl) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

/* Footer Brand Section */
.footer-brand-section {
  position: relative;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.footer-brand .brand-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
  flex-shrink: 0;
}

.footer-brand .brand-info h3 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 4px 0;
  line-height: 1.2;
}

.footer-brand .brand-tagline {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1;
}

.footer-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
  max-width: 280px;
}

/* Footer Sections */
.footer-section h3 {
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  position: relative;
  padding-bottom: var(--spacing-sm);
}

.footer-section h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  border-radius: 1px;
}

/* Footer Links */
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links li {
  margin: 0;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) 0;
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  font-weight: 500;
}

.footer-links a:hover {
  color: var(--primary-blue);
  transform: translateX(4px);
}

.footer-links a i {
  color: var(--primary-blue);
  width: 16px;
  font-size: 0.85rem;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.footer-links a:hover i {
  color: var(--accent-blue);
  transform: scale(1.1);
}

/* Footer Bottom */
.footer-bottom {
  background-color: var(--background-white);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0;
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.footer-copyright {
  flex: 1;
}

.footer-copyright p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin: 0;
  line-height: 1.5;
}

/* Social Links */
.footer-social {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(0, 122, 255, 0.08);
  color: var(--primary-blue);
  border: 1px solid rgba(0, 122, 255, 0.15);
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: all var(--transition-fast);
  font-size: 1rem;
}

.social-link:hover {
  background: var(--primary-blue);
  color: white;
  border-color: var(--primary-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

/* ===== AD CONTAINER STYLING ===== */

.ad-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md);
  background-color: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  min-height: 100px;
  position: relative;
}

.ad-container::before {
  content: 'Advertisement';
  position: absolute;
  top: 4px;
  right: 8px;
  font-size: 0.7rem;
  color: #999;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ad-header {
  min-height: 90px;
}

.ad-content {
  min-height: 250px;
}

.ad-footer {
  min-height: 90px;
}

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

@media (max-width: 1024px) {
  .nav-menu {
    gap: var(--spacing-lg);
  }
  
  .nav-categories {
    gap: var(--spacing-md);
  }
  
  .tech-specs {
    gap: var(--spacing-lg);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
  }

  .footer-brand-section {
    grid-column: 1 / -1;
    margin-bottom: var(--spacing-lg);
  }

  .footer-description {
    max-width: 400px;
  }
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--background-white);
    border-top: 1px solid var(--border-color);
    box-shadow: var(--shadow-heavy);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-lg);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-categories {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }
  
  .nav-actions {
    width: 100%;
    justify-content: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
  }
  
  .nav-actions .btn {
    width: 100%;
    max-width: 200px;
  }
  
  .nav-item {
    width: 100%;
    margin-bottom: var(--spacing-md);
  }
  
  .nav-link {
    width: 100%;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    justify-content: space-between;
  }
  
  /* Mobile Mega Menu */
  .mega-menu {
    position: static;
    transform: none;
    margin-top: var(--spacing-sm);
    box-shadow: none;
    border: 1px solid var(--border-color);
    background: var(--gray-50);
  }
  
  .nav-item.active .mega-menu {
    transform: none;
  }
  
  .mega-menu-content {
    padding: var(--spacing-md);
  }
  
  .calculator-item {
    margin-bottom: var(--spacing-sm);
  }
  
  .calculator-item a {
    padding: var(--spacing-sm);
    gap: var(--spacing-sm);
  }
  
  .calculator-item i {
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
  }
  
  .item-content h4 {
    font-size: 0.9rem;
  }
  
  .item-content p {
    font-size: 0.8rem;
  }
  
  .brand-text {
    display: none;
  }
  
  .tech-specs {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .spec-item {
    flex-direction: column;
    gap: var(--spacing-xs);
  }
  
  /* Footer Mobile Optimizations */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .footer-brand-section {
    grid-column: 1;
    margin-bottom: 0;
    text-align: center;
  }

  .footer-brand {
    justify-content: center;
  }

  .footer-description {
    max-width: none;
    text-align: center;
  }

  .footer-section {
    text-align: center;
  }

  .footer-section h3::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .footer-links a {
    justify-content: center;
  }

  .footer-links a:hover {
    transform: none;
  }

  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }

  .footer-copyright {
    order: 2;
  }

  .footer-social {
    order: 1;
  }
  
  /* Mobile Tool Card Optimizations */
  .tool-badge {
    top: 12px;
    right: 12px;
    padding: 3px 8px;
    font-size: 0.6rem;
    min-width: 40px;
    max-width: 65px;
    border-radius: 12px;
    transform: scale(0.9);
  }
  
  .tool-badge:hover {
    transform: scale(0.95);
  }
  
  .guideline-item,
  .range-item,
  .tip-item {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .brand-icon {
    width: 40px;
    height: 40px;
  }
  
  .brand-title {
    font-size: 1.25rem;
  }
  
  .nav-wrapper {
    padding: var(--spacing-sm) 0;
  }
  
  .tech-specs {
    grid-template-columns: 1fr;
  }
  
  .spec-item {
    font-size: 0.8rem;
  }

  /* Footer Mobile Small Screen */
  .footer-content {
    padding: var(--spacing-xl) 0;
  }

  .footer-brand .brand-icon {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .brand-info h3 {
    font-size: 1.25rem;
  }

  .footer-section h3 {
    font-size: 1rem;
  }

  .footer-links a {
    font-size: 0.85rem;
    padding: var(--spacing-sm) 0;
  }

  .social-link {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
  }

  .footer-copyright p {
    font-size: 0.8rem;
    line-height: 1.4;
  }
}

/* ===== MISSING CSS CLASSES - COMPATIBILITY FIXES ===== */

/* Input Grid Styles */
.input-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

/* Results Grid Styles */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.results-grid .result-card {
    background: #ffffff;
    border: 1px solid rgba(0, 122, 255, 0.15);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.results-grid .result-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 122, 255, 0.2);
    border-color: var(--primary-blue);
}

.results-grid .result-icon-bg {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    margin-bottom: 16px;
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
}

.results-grid .result-details {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.results-grid .result-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: #6e6e73;
    text-align: center;
    margin-bottom: 8px;
}

.results-grid .result-value {
    font-size: 1.5rem;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    color: var(--primary-blue);
    line-height: 1.2;
}

.results-grid .result-unit {
    font-size: 0.75rem;
    font-weight: 400;
    color: #6e6e73;
    margin-top: 2px;
}

/* Responsive adjustments for input-grid */
@media (max-width: 768px) {
    .input-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

/* 确保结果卡片文字没有背景色 */
.result-card .result-label,
.result-card .result-value,
.result-card .result-unit,
.result-display .result-value,
.result-display .result-unit,
.result-display,
.results-grid .result-value,
.results-grid .result-unit,
.results-grid .result-label,
.results-grid-enhanced .result-value,
.results-grid-enhanced .result-unit,
.results-grid-enhanced .result-label {
    background: transparent !important;
    background-color: transparent !important;
}

/* 确保结果显示区域没有背景色 */
.result-display,
.result-details {
    background: transparent !important;
    background-color: transparent !important;
}

/* 修正主要结果卡片的文字样式 */
.results-grid-enhanced .result-card {
    background: transparent;
    border: none;
    padding: 16px;
    box-shadow: none;
}

.results-grid-enhanced .result-card:hover {
    background: transparent;
    transform: none;
    box-shadow: none;
}

/* 验证提示动画 */
@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 验证提示样式 */
.validation-alert .alert-content {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
}

.validation-alert .alert-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: #ff3b30;
    font-size: 1.2rem;
}

.validation-alert .alert-text h4 {
    margin: 0 0 8px 0;
    font-size: 1rem;
    font-weight: 600;
    color: #1d1d1f;
}

.validation-alert .alert-text pre {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    font-size: 0.875rem;
    color: #6e6e73;
    white-space: pre-wrap;
    line-height: 1.4;
}

.validation-alert .alert-close {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    color: #6e6e73;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.validation-alert .alert-close:hover {
    background: rgba(0, 0, 0, 0.05);
    color: #1d1d1f;
}

/* 输入字段错误状态 */
.input-field.input-error,
.select-field.input-error {
    border-color: #ff3b30 !important;
    box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.1) !important;
}

/* 输入字段聚焦时的蓝色样式 */
.input-field:focus,
.select-field:focus {
    border-color: var(--primary-blue) !important;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1) !important;
    outline: none;
}

/* 现代化验证提示弹窗样式 */
.validation-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
    padding: 20px;
}

.validation-modal-content {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.2);
    max-width: 480px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease;
}

.validation-modal-header {
    padding: 24px 24px 16px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
    gap: 16px;
}

.validation-modal-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.validation-modal-title {
    flex: 1;
}

.validation-modal-title h3 {
    margin: 0 0 4px 0;
    font-size: 1.375rem;
    font-weight: 600;
    color: #1d1d1f;
}

.validation-modal-title p {
    margin: 0;
    font-size: 0.9rem;
    color: #6e6e73;
}

.validation-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: #6e6e73;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.validation-modal-close:hover {
    background: #f0f0f0;
    color: #1d1d1f;
}

.validation-modal-body {
    padding: 16px 24px 24px;
}

.validation-errors {
    margin-bottom: 20px;
}

.validation-error-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    background: #fff5f5;
    border: 1px solid #fed7d7;
    border-radius: 8px;
    margin-bottom: 8px;
}

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

.validation-error-icon {
    color: #e53e3e;
    font-size: 1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.validation-error-text {
    flex: 1;
}

.validation-error-text strong {
    color: #1d1d1f;
    font-weight: 600;
}

.validation-error-text span {
    color: #6e6e73;
    font-size: 0.875rem;
    display: block;
    margin-top: 2px;
}

.validation-ranges {
    margin-top: 20px;
    padding: 16px;
    background: #f8fbff;
    border: 1px solid rgba(0, 122, 255, 0.15);
    border-radius: 8px;
}

.validation-ranges h4 {
    margin: 0 0 12px 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 8px;
}

.range-grid {
    display: grid;
    gap: 8px;
}

.range-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: white;
    border: 1px solid rgba(0, 122, 255, 0.1);
    border-radius: 6px;
    font-size: 0.875rem;
}

.range-label {
    color: #6e6e73;
    font-weight: 500;
}

.range-value {
    color: var(--primary-blue);
    font-weight: 600;
    font-family: var(--font-mono);
}

.validation-modal-footer {
    padding: 16px 24px;
    border-top: 1px solid #f0f0f0;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.validation-btn {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.validation-btn-primary {
    background: var(--primary-blue);
    color: white;
}

.validation-btn-primary:hover {
    background: var(--accent-blue);
    transform: translateY(-1px);
}

.validation-btn-secondary {
    background: #f0f0f0;
    color: #1d1d1f;
}

.validation-btn-secondary:hover {
    background: #e0e0e0;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 输入字段错误状态增强 */
.input-field.input-error,
.select-field.input-error {
    border-color: #e53e3e !important;
    box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1) !important;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

/* 输入字段聚焦时的蓝色样式 */
.input-field:focus,
.select-field:focus {
    border-color: var(--primary-blue) !important;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1) !important;
    outline: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .validation-modal {
        padding: 16px;
        align-items: flex-start;
        padding-top: 60px;
    }
    
    .validation-modal-content {
        max-height: 85vh;
    }
    
    .validation-modal-header {
        padding: 20px 20px 16px;
    }
    
    .validation-modal-body {
        padding: 16px 20px 20px;
    }
    
    .validation-modal-footer {
        padding: 16px 20px;
        flex-direction: column;
    }
    
    .validation-btn {
        width: 100%;
        padding: 12px 16px;
    }
    
    .validation-modal-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    .validation-modal-title h3 {
        font-size: 1.25rem;
    }
}

/* 必填字段标记样式 */
.input-label .required {
    color: #e53e3e;
    font-weight: 700;
    margin-left: 4px;
    font-size: 1.1em;
}

.input-label.required::after {
    content: " *";
    color: #e53e3e;
    font-weight: 700;
    font-size: 1.1em;
}

/* End of file */

/* ===== NEW ENHANCED STYLES FOR LASER PROCESSING PAGE ===== */

/* Grade Badges for Materials */
.grade-badge {
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: white;
    margin-left: auto;
}

.grade-badge.flagship {
    background: linear-gradient(135deg, #FFD700 0%, #FFA000 100%);
    color: #333;
}

.grade-badge.precision {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.grade-badge.premium {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    color: #8b4513;
}

.grade-badge.standard {
    background: linear-gradient(135deg, #607D8B 0%, #455A64 100%);
}

.grade-badge.advanced {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.grade-badge.elite {
    background: linear-gradient(135deg, #FF5722 0%, #D84315 100%);
}

.grade-badge.ultimate {
    background: linear-gradient(135deg, #E91E63 0%, #C2185B 100%);
}

.grade-badge.versatile {
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
}

.grade-badge.reliable {
    background: linear-gradient(135deg, #795548 0%, #5D4037 100%);
}

/* Material Stats */
.material-stats {
    display: flex;
    gap: 16px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-item i {
    color: var(--primary-blue);
    font-size: 0.9rem;
}

/* Material Header with Badge */
.material-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.material-header strong {
    flex: 1;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

/* Spec Details */
.spec-detail {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-right: 12px;
}

.spec-detail i {
    color: var(--primary-blue);
    font-size: 0.8rem;
    width: 14px;
}

/* Enhanced Application Cards */
.application-card.featured {
    border: 2px solid var(--primary-blue);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05) 0%, rgba(90, 200, 250, 0.05) 100%);
}

.app-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
}

.app-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.app-meta {
    flex: 1;
}

.app-meta .application-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.industry-badge {
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: white;
}

.industry-badge.critical {
    background: linear-gradient(135deg, #E53E3E 0%, #C53030 100%);
}

.industry-badge.performance {
    background: linear-gradient(135deg, #4CAF50 0%, #388E3C 100%);
}

.industry-badge.precision {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.industry-badge.advanced {
    background: linear-gradient(135deg, #9C27B0 0%, #7B1FA2 100%);
}

.app-content {
    margin-bottom: 20px;
}

.app-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 16px;
}

.app-content .application-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.app-content .application-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(0, 122, 255, 0.1);
}

.app-content .application-list li:last-child {
    border-bottom: none;
}

.app-content .application-list li i {
    color: var(--primary-blue);
    font-size: 0.8rem;
    width: 16px;
    flex-shrink: 0;
}

.app-stats {
    display: flex;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(0, 122, 255, 0.1);
}

.app-stats .stat {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.app-stats .stat i {
    color: var(--primary-blue);
    font-size: 0.9rem;
}

/* Enhanced Related Cards */
.related-card.featured {
    border: 2px solid var(--primary-blue);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05) 0%, rgba(90, 200, 250, 0.05) 100%);
    transform: scale(1.02);
}

.related-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 16px;
}

.related-badge {
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: white;
}

.related-badge.premium {
    background: linear-gradient(135deg, #FFD700 0%, #FFA000 100%);
    color: #333;
}

.related-badge.advanced {
    background: linear-gradient(135deg, #4CAF50 0%, #388E3C 100%);
}

.related-badge.essential {
    background: linear-gradient(135deg, #FF5722 0%, #D84315 100%);
}

.related-badge.versatile {
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
}

.feature-highlight {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.feature-highlight i {
    color: var(--primary-blue);
    font-size: 0.9rem;
    width: 16px;
}

.related-stats {
    display: flex;
    gap: 16px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(0, 122, 255, 0.1);
}

.stat-metric {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.stat-metric strong {
    color: var(--primary-blue);
    font-weight: 700;
}

/* Responsive Design for New Elements */
@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 12px;
    }
    
    .app-icon {
        width: 48px;
        height: 48px;
    }
    
    .app-stats {
        flex-direction: column;
        gap: 8px;
    }
    
    .material-stats {
        flex-direction: column;
        gap: 8px;
    }
    
    .related-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 12px;
    }
    
    .feature-highlight {
        justify-content: center;
    }
    
    .related-stats {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

/* Cache buster */

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  border-radius: 6px;
  transition: all var(--transition-fast);
  color: var(--text-primary);
  font-size: 1.2rem;
}

.mobile-menu-toggle:hover {
  background-color: var(--gray-100);
}

/* Remove tech banner for cleaner look */
.tech-banner {
  display: none;
}

@media (max-width: 1024px) {
  .nav-menu {
    position: static;
  }

  .nav-categories {
    gap: 4px;
  }

  .mega-menu {
    width: 680px;
  }
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--background-white);
    border-top: 1px solid var(--border-color);
    box-shadow: var(--shadow-medium);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
    z-index: 999;
    padding: 20px 0;
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-categories {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0 32px;
  }

  .nav-item {
    border-bottom: 1px solid var(--border-color);
  }

  .nav-item:last-child {
    border-bottom: none;
  }

  .nav-link {
    padding: 16px 0;
    justify-content: space-between;
    width: 100%;
    font-size: 1rem;
  }

  .mega-menu {
    position: static;
    width: 100%;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    margin-top: 0;
    background: var(--gray-50);
  }

  .nav-item.active .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .mega-menu-content {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px 0;
  }

  .calculator-item a {
    padding: 12px;
    min-height: auto;
  }

  .brand-text {
    display: none;
  }
}

/* Mega Menu Badge Styles */
.calculator-item .badge.precision {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.calculator-item .badge.advanced {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
}

.calculator-item .badge.premium {
  background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
  color: #8b4513;
}

.calculator-item .badge.ai {
  background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
  color: #2c3e50;
}

.calculator-item .badge.smart {
  background: linear-gradient(135deg, #96deda 0%, #50c9c3 100%);
  color: white;
}

.calculator-item .badge.optimized {
  background: linear-gradient(135deg, #ffeaa7 0%, #fab1a0 100%);
  color: #2d3436;
}

.calculator-item .badge.business {
  background: linear-gradient(135deg, #81ecec 0%, #74b9ff 100%);
  color: white;
}

.calculator-item .badge.pro {
  background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
  color: #2c3e50;
}

.calculator-item .badge.engineering {
  background: linear-gradient(135deg, #a29bfe 0%, #6c5ce7 100%);
  color: white;
}

.calculator-item .badge.thermal {
  background: linear-gradient(135deg, #fd79a8 0%, #e84393 100%);
  color: white;
}

.calculator-item .badge.universal {
  background: linear-gradient(135deg, #fdcb6e 0%, #e17055 100%);
  color: white;
}

.calculator-item .badge.micro {
  background: linear-gradient(135deg, #55a3ff 0%, #003d82 100%);
  color: white;
}

.calculator-item .badge.financial {
  background: linear-gradient(135deg, #00b894 0%, #00cec9 100%);
  color: white;
}

.calculator-item .badge.predictive {
  background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
  color: white;
}

.calculator-item .badge.strategic {
  background: linear-gradient(135deg, #fd79a8 0%, #fdcb6e 100%);
  color: white;
}

.calculator-item .badge.eco {
  background: linear-gradient(135deg, #00b894 0%, #55efc4 100%);
  color: white;
}

.calculator-item .badge.comprehensive {
  background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
  color: white;
}

.calculator-item .badge.tolerance {
  background: linear-gradient(135deg, #a29bfe 0%, #6c5ce7 100%);
  color: white;
}

.calculator-item .badge.metric {
  background: linear-gradient(135deg, #00cec9 0%, #00b894 100%);
  color: white;
}

.calculator-item .badge.force {
  background: linear-gradient(135deg, #ff7675 0%, #e17055 100%);
  color: white;
}

.calculator-item .badge.speed {
  background: linear-gradient(135deg, #ffeaa7 0%, #fdcb6e 100%);
  color: #2d3436;
}

.calculator-item .badge.quality {
  background: linear-gradient(135deg, #fd79a8 0%, #e84393 100%);
  color: white;
}

/* Header-specific Badge Styles (高优先级，仅用于导航菜单) */
.nav-menu .calculator-item .header-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    display: inline-block;
    padding: 3px 6px;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    line-height: 1;
    white-space: nowrap;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.nav-menu .calculator-item .header-badge.comprehensive {
    background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
    color: white;
    border-color: rgba(255, 255, 255, 0.2);
}

/* ===== PRINT STYLES ===== */

@media print {
  .site-header,
  .tech-banner,
  .mobile-menu-toggle,
  .ad-container,
  .footer-social {
    display: none !important;
  }

  .site-footer {
    border-top: 2px solid #333;
    margin-top: 40px;
  }

  .footer-main {
    background: none;
    border-bottom: none;
  }

  .footer-content {
    padding: 20px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-section h3 {
    color: #333;
    border-bottom: 1px solid #333;
    padding-bottom: 4px;
  }

  .footer-links a {
    color: #333;
  }

  .footer-bottom {
    border-top: 1px solid #333;
    padding: 10px 0;
  }

  .footer-copyright p {
    color: #333;
    font-size: 0.8rem;
  }
}

/* Header-specific Badge Styles (separate from page badges) */
.header-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1;
    white-space: nowrap;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.header-badge.comprehensive {
    background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
    color: white;
    border-color: rgba(255, 255, 255, 0.2);
}

/* Mega Menu Badge Styles */