/* PC端专用样式 */
@media (min-width: 1024px) {
  .container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }

  .header {
    background: rgba(255, 255, 255, 0.95);
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border-bottom: 4px solid #FFD166;
    flex-shrink: 0;
  }

  .header h1 {
    color: #EF476F;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
  }

  .main-content {
    display: flex;
    flex: 1;
    gap: 2rem;
    padding: 2rem;
    align-items: stretch;
    padding-bottom: 180px; /* 为底部菜单留出空间 */
  }

  .points-section {
    display: flex;
    flex: 1;
    gap: 2rem;
  }

  .points-card {
    flex: 1;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 25px;
    padding: 2rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border: 4px solid #FFD166;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 360px);
  }

  .points-card h2 {
    color: #073B4C;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
  }

  .points-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex: 1;
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
  }

  .form-group label {
    font-weight: 600;
    color: #073B4C;
    font-size: 1.2rem;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    padding: 1rem;
    border: 2px solid #ddd;
    border-radius: 12px;
    font-size: 1.1rem;
    transition: border-color 0.3s ease;
  }

  .form-group textarea {
    min-height: 100px;
    resize: vertical;
  }

  .search-input {
    padding: 1rem;
    font-size: 1.1rem;
    border-radius: 12px;
  }

  .form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
  }

  .btn {
    min-height: 55px;
    font-size: 1.1rem;
    padding: 0.8rem 1.3rem;
    border-radius: 12px;
    gap: 0.5rem;
    min-width: 140px;
  }

  .students-list-card {
    flex: 1;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 25px;
    padding: 2rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border: 4px solid #FFD166;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 360px);
  }

  .students-list-card h2 {
    color: #073B4C;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
  }

  .students-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow-y: auto;
    flex: 1;
  }

  .student-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    border-radius: 15px;
    background: white;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    border: 2px solid #EDEDED;
    transition: all 0.3s ease;
  }

  .student-item .student-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
  }

  .student-item .points-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: #EF476F;
  }

  .bottom-nav {
    display: none;
  }

  .dock-nav {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    border-radius: 30px;
    padding: 15px 25px;
    display: flex;
    gap: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    z-index: 1000;
  }

  .dock-nav .nav-btn {
    background: rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    padding: 15px 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    min-width: 100px;
    min-height: 80px;
    justify-content: center;
  }

  .dock-nav .nav-btn.active {
    background: rgba(239, 71, 111, 0.8);
    color: white;
  }

  .dock-nav .nav-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
  }

  .dock-nav .nav-btn i {
    font-size: 1.5rem;
  }

  .dock-nav .nav-btn span {
    font-size: 1rem;
    font-weight: 500;
  }

  /* 触摸设备优化 */
  @media (hover: none) and (pointer: coarse) {
    .btn {
      min-height: 55px;
      touch-action: manipulation;
      -webkit-tap-highlight-color: transparent;
      user-select: none;
    }

    .dock-nav .nav-btn {
      min-height: 70px;
      min-width: 90px;
    }
  }
}