:root{--color-bg: #f5f5f5;--color-card: #ffffff;--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-header: #1e293b;--color-row-teacher: #eff6ff;--color-row-child: #fff7ed;--color-marker: #fbbf24;--color-disabled: #94a3b8;--color-border: #e2e8f0;--color-text: #1e293b}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;font-size:14px;color:var(--color-text);background-color:var(--color-bg)}.app{display:flex;flex-direction:column;min-height:100vh}.app-header{background-color:var(--color-header);color:#fff;padding:14px 24px}.app-header h1{margin:0;font-size:18px;font-weight:600}.search-panel{display:flex;align-items:flex-end;gap:16px;background-color:var(--color-card);padding:16px 24px;border-bottom:1px solid var(--color-border);flex-wrap:wrap}.search-field{display:flex;flex-direction:column;gap:4px;min-width:220px}.search-field label{font-size:12px;font-weight:600;color:#64748b}.search-field select,.search-field input[type=date]{padding:8px 10px;border:1px solid var(--color-border);border-radius:4px;font-size:14px;background-color:#fff;color:var(--color-text);font-family:inherit}.search-field select:disabled,.search-field input[type=date]:disabled{background-color:#f1f5f9;color:#94a3b8}.btn{padding:8px 18px;border:none;border-radius:4px;font-size:14px;font-weight:600;cursor:pointer;transition:background-color .15s ease}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-hover)}.btn-primary:disabled{background-color:var(--color-disabled);cursor:not-allowed}.btn-secondary{background-color:#fff;color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover:not(:disabled){background-color:#f1f5f9}.btn-secondary:disabled{color:var(--color-disabled);cursor:not-allowed}.error-banner{margin:16px 24px 0;padding:10px 16px;background-color:#fee2e2;color:#b91c1c;border-radius:4px;font-size:13px}.empty-state{margin:32px 24px;text-align:center;color:#64748b}.data-table-container{margin:16px 24px;background-color:var(--color-card);border-radius:6px;overflow:hidden;border:1px solid var(--color-border);display:flex;flex-direction:column}.table-toolbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--color-border);flex-wrap:wrap;gap:8px}.table-meta{display:flex;gap:16px;flex-wrap:wrap;align-items:baseline;font-size:13px;color:#475569}.table-meta .meta-item strong{color:var(--color-text);font-size:14px}.table-actions{display:flex;gap:8px}.filter-bar{display:flex;align-items:center;gap:16px;padding:8px 16px;border-bottom:1px solid var(--color-border);background-color:#f8fafc;font-size:13px}.filter-bar-label{font-weight:600;color:#475569}.filter-checkbox{display:flex;align-items:center;gap:4px;cursor:pointer}.table-header-row{display:grid;background-color:var(--color-header);color:#fff;font-weight:600;position:sticky;top:0;z-index:1}.table-body-wrapper{width:100%}.cell{padding:8px 12px;display:flex;align-items:center;overflow:hidden}.cell-marker{padding:0;justify-content:center}.cell-text{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.4}.data-row{display:grid;border-bottom:1px solid var(--color-border);background-color:#fff}.data-row.row-teacher{background-color:var(--color-row-teacher)}.data-row.row-child{background-color:var(--color-row-child)}.data-row.row-undefined{background-color:#fff}.row-changed{position:relative}.change-marker{display:block;width:8px;height:100%;background-color:var(--color-marker)}.label-dropdown{width:100%;padding:4px 6px;font-size:13px;border:1px solid var(--color-border);border-radius:4px;background-color:#fff;color:var(--color-text)}