.header{display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:#fff;box-shadow:0 2px 8px #0000001a}.logo{color:#27bd51;font-size:20px;font-weight:700}.site-layout-background{background:#fff}.student-manager{padding:24px}.student-manager .search-area{background:#fff;padding:16px;border-radius:8px;margin:16px 0}.student-manager .search-row{display:flex;gap:12px}.student-manager .search-row input{padding:8px 12px;border:1px solid #ddd;border-radius:6px}.table-container{background:#fff;border-radius:8px;padding:16px}.data-table{width:100%;border-collapse:collapse}.data-table thead th{text-align:left;padding:12px;border-bottom:1px solid #eee}.data-table tbody td{padding:12px;border-bottom:1px solid #f0f0f0}.data-table tbody tr:hover{background:#fafafa}.btn{padding:8px 14px;border-radius:6px;border:none;cursor:pointer}.btn-primary{background:#27BD51;color:#fff}.btn-secondary{background:#f0f0f0;color:#333}.btn-info{background:#1890ff;color:#fff}.btn-danger{background:#ff4d4f;color:#fff}.btn-sm{padding:6px 10px;font-size:12px}.pagination{display:flex;align-items:center;gap:12px;margin-top:16px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center}.modal{background:#fff;border-radius:8px;width:520px;max-width:90vw}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid #eee}.modal-body{padding:16px}.modal-footer{display:flex;justify-content:flex-end;gap:12px;padding:12px 16px;border-top:1px solid #eee}.form-group{margin-bottom:12px}.form-group label{display:block;margin-bottom:6px}.form-group input{width:100%;padding:8px 10px;border:1px solid #ddd;border-radius:6px}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5}.App{min-height:100vh}