/* 移动端响应式布局 */
@media (max-width: 900px) {
  .nav-content {
    flex-wrap: wrap;
    padding: 0.75rem 2rem;
  }
  
  .nav-brand {
    order: 1;
  }
  
  .nav-actions {
    order: 2;
  }
  
  .nav-menu {
    order: 3;
    width: 100%;
    justify-content: center;
    margin-top: 0.75rem;
  }
  
  .navbar {
    padding: 0.75rem 0;
  }
  
  .main-container {
    padding-top: calc(160px + 15px);
  }
}

/* 响应式设计 */
@media (max-width: 1200px) {
  .content-wrapper {
    grid-template-columns: 1fr;
    max-width: 800px;
    gap: 2rem;
  }

  .main-container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .nav-content {
    padding: 0 1.5rem;
  }
}

@media (max-width: 768px) {
  .main-container {
    padding-left: 1rem;
    padding-right: 1rem;
    padding-top: calc(170px + 15px);
  }

  .nav-content {
    padding: 0.75rem 1rem;
    position: relative;
  }

  .nav-menu {
    gap: 0.75rem;
    margin-top: 1rem;
  }

  .nav-actions {
    gap: 0.5rem;
  }

  .mobile-menu-toggle {
    display: none;
  }

  /* 移动端隐藏新手引导按钮 */
  #guideText, #mobileGuideText {
    display: none !important;
  }
  
  .nav-item:nth-last-child(1),
  .mobile-nav-item:nth-last-child(1) {
    display: none !important;
  }

  .main-card,
  .info-card {
    padding: 2rem 1.5rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  /* 进度条保持横向布局 */
  .progress-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-bottom: 1.25rem;
    padding: 0 calc(20% - 1.25rem);
  }

  .progress-line {
    position: absolute;
    top: 50%;
    left: calc(20% - 1.25rem + 1.25rem);
    right: calc(20% - 1.25rem + 1.25rem);
    height: 2px;
    background: var(--border-primary);
    transform: translateY(-50%);
    z-index: 1;
  }

  .step-labels {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0 -5%;
  }

  .step-label {
    flex: 1;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    line-height: 1.2;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 2.5rem;
    padding: 0.25rem 0.25rem;
  }

  .step-label:first-child {
    justify-content: flex-start;
    padding-left: 0;
  }

  .step-label:last-child {
    justify-content: flex-end;
    padding-right: 0;
  }

  .form-input,
  .btn {
    padding: 0.875rem 1rem;
    font-size: 0.95rem;
  }

  .modal-content {
    padding: 2rem 1.5rem;
    margin: 1rem;
  }
}

@media (max-width: 600px) {
  .nav-menu {
    gap: 0.4rem;
  }
  
  .nav-item {
    padding: 0.3rem 0.5rem;
    font-size: 0.7rem;
    gap: 0.25rem;
  }
  
  .nav-item i {
    font-size: 0.65rem;
  }
  
  .nav-item {
    padding: 0.35rem 0.6rem;
    font-size: 0.75rem;
    gap: 0.3rem;
  }
  
  .nav-item i {
    font-size: 0.7rem;
  }
}

@media (max-width: 480px) {
  .main-container {
    padding: calc(180px + 15px) 0.75rem 1.5rem;
  }

  .nav-content {
    padding: 0.5rem 0.75rem;
  }

  .nav-brand {
    font-size: 1.125rem;
  }

  .nav-logo {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }
  
  .nav-menu {
    gap: 0.5rem;
    margin-top: 1rem;
  }

  .main-card,
  .info-card {
    padding: 1.5rem 1rem;
    border-radius: 20px;
  }

  .hero-icon {
    width: 64px;
    height: 64px;
    font-size: 1.5rem;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .modal-content {
    padding: 1.5rem 1rem;
  }

  .log-table th,
  .log-table td {
    padding: 0.75rem 0.5rem;
    font-size: 0.8rem;
  }

  .step-label {
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 2rem;
    padding: 0.25rem 0.125rem;
    line-height: 1.1;
  }

  .step-label:first-child {
    justify-content: flex-start;
    padding-left: 0;
  }

  .step-label:last-child {
    justify-content: flex-end;
    padding-right: 0;
  }

  .progress-step {
    width: 2rem;
    height: 2rem;
    font-size: 0.75rem;
  }

  .progress-line {
    left: calc(20% - 1.25rem + 1rem);
    right: calc(20% - 1.25rem + 1rem);
  }
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-surface);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--border-primary);
  border-radius: 4px;
  transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* 性能优化：减少动画，优化高频元素 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 高频使用元素的性能优化 */
.btn:hover,
.nav-item:hover,
.card:hover {
  will-change: transform;
}

.btn:not(:hover),
.nav-item:not(:hover),
.card:not(:hover) {
  will-change: auto;
}