/* 晶体矿物学习平台 - 晶体视界响应式样式 */

/* 桌面端（≥1200px）*/
@media screen and (min-width: 1600px) {
  .crystal-vision {
    max-width: 1200px;
  }
  
  .crystals-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 平板端（768-1199px）*/
@media screen and (min-width: 768px) and (max-width: 1199px) {
  .nav-container,
  .crystal-vision {
    padding: 16px;
  }
  
  .crystal-showcase {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .model-viewer {
    height: 360px;
  }
  
  .nav-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .crystals-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .research-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

/* 移动端（<768px）*/
@media screen and (max-width: 767px) {
  .nav-container {
    flex-direction: column;
    padding: 12px;
  }
  
  .logo {
    margin-bottom: 12px;
  }
  
  .nav-menu {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 12px;
  }
  
  .nav-menu a {
    font-size: 14px;
  }
  
  .user-actions {
    width: 100%;
    justify-content: center;
  }
  
  .search-box {
    width: 100%;
  }
  
  .search-box input {
    width: 100%;
  }
  
  .crystal-vision {
    padding: 12px;
  }
  
  .crystal-showcase {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .model-viewer {
    height: 240px;
  }
  
  .model-controls {
    flex-wrap: wrap;
  }
  
  .control-btn {
    flex: 1;
    justify-content: center;
  }
  
  .nav-grid,
  .crystals-grid,
  .research-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .section-header h2 {
    font-size: 20px;
  }
  
  .crystal-info h2 {
    font-size: 20px;
    margin-bottom: 16px;
  }
  
  .info-tabs {
    gap: 12px;
  }
  
  .tab-btn {
    font-size: 12px;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }
  
  .social-links {
    justify-content: center;
  }
}

/* 移动端导航菜单 */
@media screen and (max-width: 767px) {
  .nav-menu {
    display: none;
    width: 100%;
    background: #FFFFFF;
    position: absolute;
    top: 100%;
    left: 0;
    padding: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 1000; /* 确保导航菜单始终在最上层 */
  }
  
  .nav-menu.active {
    display: flex;
    flex-direction: column;
  }
  
  .nav-menu a {
    display: block;
    padding: 12px;
    font-size: 15px;
  }
  
  .menu-toggle {
    display: block;
    font-size: 24px;
    color: #333333;
    padding: 8px;
    margin-right: 8px;
    cursor: pointer;
  }
  
  /* 增强移动端触摸区域 */
  .selector-btn, .control-btn, .option-item, .more-link, .detail-link, .filter-btn, .search-btn, .page-link {
    padding: 10px;
    min-height: 44px; /* 确保触摸区域足够大 */
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  /* 添加触摸反馈 */
  .selector-btn:active, .control-btn:active, .more-link:active, .detail-link:active, .filter-btn:active, .search-btn:active, .page-link:active {
    opacity: 0.7;
  }
  
  /* 优化输入控件 */
  input[type="checkbox"], input[type="radio"] {
    width: 20px;
    height: 20px;
  }
  
  /* 晶体库页面移动端优化 */
  .crystal-library-container {
    padding: 1rem 0.5rem;
  }
  
  .filter-section {
    padding: 15px 10px;
    margin-bottom: 20px;
  }
  
  .filter-group {
    margin-bottom: 15px;
  }
  
  .filter-title {
    font-size: 1em;
    margin-bottom: 10px;
  }
  
  .filter-options {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 5px;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    scrollbar-width: none; /* Firefox */
  }
  
  .filter-options::-webkit-scrollbar {
    display: none; /* Chrome, Safari */
  }
  
  .filter-btn {
    padding: 6px 12px;
    font-size: 0.85em;
    white-space: nowrap;
  }
  
  .current-filters {
    margin-bottom: 15px;
  }
  
  .filter-tag {
    font-size: 0.8em;
    padding: 6px 10px;
  }
  
  .view-mode-switch {
    width: 100%;
    justify-content: center;
    margin-top: 10px;
  }
  
  .mode-btn {
    flex: 1;
    font-size: 0.85em;
    padding: 8px;
  }
  
  #crystal-search {
    padding: 12px 15px;
    font-size: 14px;
  }
  
  .search-btn {
    padding: 12px 20px;
  }
}