*{margin:0;padding:0;box-sizing:border-box}:root{--color-primary: #3B82F6;--color-secondary: #60A5FA;--color-accent: #3B82F6;--color-contrast: #2563EB;--color-background: #F8FAFC;--color-background-alt: #FFFFFF;--color-card-front: #FFFFFF;--color-card-back: #F1F5F9;--color-text: #1E293B;--color-text-light: #64748B;--color-highlight: #3B82F6;--color-border: #1E293B;--color-shadow: #94A3B8;--color-glow: rgba(59, 130, 246, .1)}body{font-family:Noto Sans SC,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background-color:var(--color-background);color:var(--color-text);min-height:100vh;font-size:16px}#root{min-height:100vh}.app-container{min-height:100vh;display:flex;flex-direction:column;padding:32px;max-width:1000px;margin:0 auto}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px;padding-bottom:20px;border-bottom:2px solid var(--color-border)}.logo{display:flex;align-items:center;gap:14px;cursor:pointer;transition:opacity 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svg{width:18px;height:18px}.editor-btn:hover{background:var(--color-accent);color:#fff;transform:translate(-1px,-1px);box-shadow:3px 3px 0 var(--color-shadow)}.help-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.help-modal{background:var(--color-background-alt);border:3px solid var(--color-border);border-radius:16px;box-shadow:8px 8px 0 var(--color-shadow);max-width:560px;width:100%;max-height:80vh;overflow:hidden;display:flex;flex-direction:column}.help-modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:2px solid var(--color-border)}.help-modal-header h3{font-size:1.2rem;font-weight:700;color:var(--color-text);margin:0}.help-modal-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:var(--color-background);border:2px solid 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var(--color-shadow);border:2px solid var(--color-border);text-transform:uppercase;letter-spacing:.5px}.insert-blank-btn{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;background:var(--color-background-alt);color:var(--color-text-light);border:2px solid var(--color-border);border-radius:6px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .15s;align-self:flex-start}.insert-blank-btn svg{width:16px;height:16px}.insert-blank-btn:hover{background:var(--color-primary);color:#fff;box-shadow:2px 2px 0 var(--color-shadow)}.judge-options{display:flex;gap:12px}.judge-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:16px;background:var(--color-background);color:var(--color-text);border:2px solid var(--color-border);border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .15s}.judge-btn svg{width:24px;height:24px}.judge-btn:hover{background:var(--color-background-alt)}.judge-btn.active.correct{background:#22c55e;color:#fff;box-shadow:3px 3px 0 var(--color-shadow)}.judge-btn.active.incorrect{background:#ef4444;color:#fff;box-shadow:3px 3px 0 var(--color-shadow)}.answers-list{display:flex;flex-direction:column;gap:12px}.answer-input-row{display:flex;align-items:flex-start;gap:10px}.answer-index{display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:var(--color-primary);color:#fff;border-radius:6px;font-size:.85rem;font-weight:700;flex-shrink:0;margin-top:10px}.answer-input-row textarea{flex:1;padding:12px;border:2px solid var(--color-border);border-radius:8px;font-size:.95rem;font-family:inherit;color:var(--color-text);background:var(--color-background);resize:vertical;transition:all .15s}.answer-input-row textarea:focus{outline:none;box-shadow:3px 3px 0 var(--color-shadow)}.remove-answer-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:var(--color-background);color:var(--color-text-light);border:2px solid var(--color-border);border-radius:6px;cursor:pointer;transition:all .15s;flex-shrink:0;margin-top:8px}.remove-answer-btn svg{width:14px;height:14px}.remove-answer-btn:hover{background:#ef4444;color:#fff;border-color:#ef4444}.add-answer-btn{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;background:var(--color-background);color:var(--color-text-light);border:2px dashed var(--color-border);border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .15s}.add-answer-btn svg{width:16px;height:16px}.add-answer-btn:hover{background:var(--color-background-alt);color:var(--color-text);border-style:solid}.form-actions{display:flex;gap:12px;margin-top:24px}.cancel-btn{flex:1;padding:14px 20px;background:var(--color-background);color:var(--color-text);border:2px solid var(--color-border);border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .15s}.cancel-btn:hover{background:var(--color-background-alt)}.submit-btn{flex:2;padding:14px 20px;background:var(--color-primary);color:#fff;border:2px solid var(--color-border);border-radius:8px;box-shadow:4px 4px 0 var(--color-shadow);font-size:1rem;font-weight:600;cursor:pointer;transition:all .15s}.submit-btn:hover:not(:disabled){background:var(--color-contrast);transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--color-shadow)}.submit-btn:disabled{opacity:.5;cursor:not-allowed}.cards-list-section{background:var(--color-background-alt);border:2px solid var(--color-border);border-radius:12px;box-shadow:4px 4px 0 var(--color-shadow);padding:24px;display:flex;flex-direction:column;max-height:calc(100vh - 180px);overflow:hidden}.cards-list-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.cards-list-header h3{font-size:1.1rem;font-weight:700;color:var(--color-text);margin:0}.use-cards-btn{display:flex;align-items:center;gap:6px;padding:10px 16px;background:#22c55e;color:#fff;border:2px solid var(--color-border);border-radius:8px;box-shadow:3px 3px 0 var(--color-shadow);font-size:.9rem;font-weight:600;cursor:pointer;transition:all .15s}.use-cards-btn svg{width:16px;height:16px}.use-cards-btn:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--color-shadow)}.empty-list{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--color-text-light);padding:48px 24px}.empty-list svg{width:64px;height:64px;opacity:.5}.empty-list 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var(--color-border)}.card-type-badge.qa{background:#3b82f61a;color:#3b82f6}.card-type-badge.fill{background:#a855f71a;color:#a855f7}.card-type-badge.judge{background:#22c55e1a;color:#22c55e}.card-item-content{margin-bottom:12px}.card-question{font-size:.95rem;color:var(--color-text);line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-answers{display:flex;flex-wrap:wrap;gap:6px}.card-answer-tag{font-size:.8rem;padding:4px 10px;background:var(--color-glow);color:var(--color-primary);border-radius:4px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.card-item-actions{display:flex;gap:8px;justify-content:flex-end}.card-action-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:var(--color-background-alt);color:var(--color-text-light);border:2px solid var(--color-border);border-radius:6px;cursor:pointer;transition:all .15s}.card-action-btn svg{width:16px;height:16px}.card-action-btn:disabled{opacity:.3;cursor:not-allowed}.card-action-btn.move:hover:not(:disabled){background:var(--color-background);color:var(--color-text)}.card-action-btn.edit:hover{background:var(--color-primary);color:#fff}.card-action-btn.delete:hover{background:#ef4444;color:#fff}@media (max-width: 900px){.editor-content{grid-template-columns:1fr}.editor-form{position:static}.cards-list-section{max-height:none}}@media (max-width: 600px){.editor-header{flex-wrap:wrap;gap:12px}.editor-header h2{order:-1;width:100%;text-align:center}.back-btn{order:0}.editor-actions{margin-left:0;width:100%;justify-content:center}.type-selector{flex-wrap:wrap}.type-btn{min-width:calc(50% - 5px);flex:none}.judge-options{flex-direction:column}}