:root{--primary-color: #3b82f6;--secondary-color: #10b981;--background-color: #0f172a;--surface-color: #1e293b;--text-color: #94a3b8;--text-color-light: #cbd5e1;--heading-color: #f8fafc;--border-color: #334155;--error-color: #ef4444;--success-color: #10b981;--info-color: #8b5cf6;--spacing-md: 1rem;--border-radius-lg: 12px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,sans-serif;background-color:var(--background-color);color:var(--text-color);line-height:1.6;-webkit-font-smoothing:antialiased}.container{max-width:1400px;margin:0 auto;padding:var(--spacing-md)}.header{text-align:center;margin-bottom:2rem;padding:1.5rem;background-color:var(--surface-color);border-radius:var(--border-radius-lg);border:1px solid var(--border-color)}.header h1{color:var(--heading-color);margin-bottom:.25rem}.header-link{color:var(--primary-color);text-decoration:none;font-size:.9rem;font-weight:600}.header-sections{display:flex;justify-content:center;margin-top:1rem;flex-wrap:wrap;gap:1.5rem;border-top:1px solid var(--border-color);padding-top:1.2rem}.resource-links,.tool-links{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.resource-links h3,.tool-links h3{font-size:.85rem;color:var(--text-color-light);margin-right:4px}.mini-link{color:var(--primary-color);text-decoration:none;font-size:.8rem;padding:4px 10px;background:#3b82f61a;border-radius:6px;border:1px solid rgba(59,130,246,.2)}.tool-button{padding:6px 14px;border-radius:8px;color:#fff;text-decoration:none;font-size:.8rem;font-weight:700}.tool-button.classroom{background:#1e8e3e}.tool-button.miro{background:#fc0;color:#000}.tool-button.canva{background:#00c4cc}.main-content{display:grid;grid-template-columns:1fr;gap:1.5rem}@media(min-width:1024px){.main-content{grid-template-columns:380px 1fr}}.form-container,.results-container{background-color:var(--surface-color);padding:1.5rem;border-radius:var(--border-radius-lg);border:1px solid var(--border-color)}.form-container h2{color:var(--heading-color);margin-bottom:1.5rem;font-size:1.25rem}.form-group{margin-bottom:1.2rem}.form-group label{display:block;color:var(--heading-color);margin-bottom:8px;font-weight:500;font-size:.9rem}.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px;border-radius:8px;border:1px solid var(--border-color);background:#0f172a;color:#fff;font-size:.95rem;font-family:inherit}.differentiation-guide{background:#3b82f60d;border:1px dashed var(--primary-color);padding:12px;border-radius:8px;margin-bottom:1.2rem}.differentiation-guide h4{font-size:.85rem;color:var(--heading-color);margin-bottom:6px}.differentiation-guide ul{list-style:none;font-size:.75rem}.differentiation-guide li{margin-bottom:4px;color:var(--text-color-light)}.evaluation-tags-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.tag-checkbox{padding:10px;background:#0f172a;border:1px solid var(--border-color);border-radius:8px;font-size:.75rem;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all .2s}.tag-checkbox.checked{border-color:var(--primary-color);background:#3b82f61a;color:#fff}.checkbox-label{display:flex;align-items:center;gap:10px;cursor:pointer;color:var(--heading-color);font-size:.9rem;font-weight:500;margin-top:10px}.checkbox-label input[type=checkbox]{width:18px;height:18px;cursor:pointer}.helper-text{font-size:.75rem;color:var(--text-color);margin-top:4px;font-style:italic;padding-left:28px}.generate-button{width:100%;padding:14px;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;border:none;border-radius:10px;font-weight:700;font-size:1rem;cursor:pointer;box-shadow:0 4px 15px #0003;margin-top:1rem}.timeline-container{display:flex;flex-direction:column;gap:1.5rem;padding-left:1rem;border-left:2px solid var(--border-color);margin-left:.5rem;margin-top:1rem}.timeline-item{position:relative}.timeline-item:before{content:"";position:absolute;left:-1.45rem;top:.4rem;width:12px;height:12px;background:var(--primary-color);border:2px solid var(--surface-color);border-radius:50%}.timeline-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.timeline-label{font-size:.9rem;font-weight:700;color:var(--heading-color)}.timeline-content{font-size:.95rem;color:var(--text-color-light)}.diff-grid{display:grid;grid-template-columns:1fr;gap:1rem;margin-top:.5rem}@media(min-width:768px){.diff-grid{grid-template-columns:1fr 1fr 1fr}}.diff-item{background:#0f172a;padding:12px;border-radius:8px;border-top:3px solid transparent}.diff-item.gifted{border-top-color:var(--info-color)}.diff-item.average{border-top-color:var(--primary-color)}.diff-item.struggling{border-top-color:var(--error-color)}.diff-header{display:block;font-size:.8rem;font-weight:700;color:var(--heading-color);margin-bottom:8px}.diff-text{font-size:.85rem;line-height:1.4;color:var(--text-color-light)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000d9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:9999;padding:20px}.modal-content{background:var(--surface-color);border:2px solid var(--primary-color);border-radius:16px;width:100%;max-width:500px;padding:2rem;box-shadow:0 25px 50px -12px #00000080}.modal-content.large{max-width:850px;max-height:90vh;display:flex;flex-direction:column}.modal-body.scrollable{overflow-y:auto;flex:1;margin:1rem 0;padding-right:1rem}.modal-header h2{color:var(--heading-color);margin-bottom:1rem;border-bottom:1px solid var(--border-color);padding-bottom:.5rem}.modal-body-text{color:var(--text-color-light);margin-bottom:2rem;text-align:center}.modal-actions{display:flex;gap:1rem}.modal-btn{flex:1;padding:12px;border-radius:8px;font-weight:700;cursor:pointer;border:none;font-family:inherit}.modal-btn.confirm{background:var(--success-color);color:#fff}.modal-btn.cancel{background:#334155;color:#fff}.modal-btn.delete{background:var(--error-color);color:#fff}.edit-divider{padding:10px 0;margin:15px 0 10px;color:var(--primary-color);font-weight:700;border-bottom:2px solid var(--border-color);font-size:.9rem}.edit-stage-group{margin-bottom:1rem}.edit-stage-group textarea{width:100%;padding:12px;background:#0f172a;border:1px solid var(--border-color);color:#fff;border-radius:8px;font-family:inherit;font-size:.95rem}.edit-stage-header{display:flex;align-items:center;gap:8px;margin-bottom:4px}.edit-stage-header label{flex:1;font-size:.85rem;font-weight:600;color:var(--text-color-light)}.lesson-plan-result{animation:fadeIn .4s ease-out}.card{background:#1e293b;border-left:4px solid var(--primary-color);padding:1.2rem;margin-bottom:1.5rem;border-radius:4px 12px 12px 4px;box-shadow:0 4px 10px #00000026}.card h3{color:var(--heading-color);margin-bottom:.8rem;font-size:1.1rem}.diary-field-wrapper{margin-bottom:1.2rem}.diary-label{font-size:.8rem;color:var(--primary-color);display:block;margin-bottom:6px;font-weight:600}.diary-field{display:flex;justify-content:space-between;align-items:flex-start;background:#0f172a;padding:12px;border-radius:10px;gap:1rem}.diary-text{font-size:.95rem;flex:1;white-space:pre-wrap;color:var(--text-color-light)}.copy-button{background:var(--primary-color);color:#fff;border:none;padding:6px 12px;border-radius:6px;font-size:.75rem;cursor:pointer;font-weight:700}.export-container{display:flex;gap:12px;margin-bottom:1.5rem}.save-button{background:var(--success-color);color:#fff;padding:12px;border-radius:10px;flex:1;border:none;cursor:pointer;font-weight:700;font-size:.95rem}.edit-modal-btn{background:var(--info-color);color:#fff;padding:12px;border-radius:10px;flex:1;border:none;cursor:pointer;font-weight:700;font-size:.95rem}.saved-plans-container{margin-top:2rem;border-top:1px solid var(--border-color);padding-top:1.5rem}.search-input{width:100%;padding:10px;background:#0f172a;border:1px solid var(--border-color);border-radius:8px;color:#fff;margin-bottom:1rem;font-family:inherit}.saved-plans-list{list-style:none;max-height:350px;overflow-y:auto}.saved-plans-list li{padding:12px;background:#0f172a80;border-radius:8px;margin-bottom:8px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;border:1px solid transparent}.saved-plans-list li.active{border-color:var(--primary-color);background:#3b82f61a}.plan-info{display:flex;flex-direction:column;gap:4px;overflow:hidden;flex:1;padding-right:12px}.plan-title{font-size:.85rem;color:var(--text-color-light);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.meta-tag{font-size:.7rem;color:var(--text-color);font-weight:400;opacity:.8}.mini-delete-button{color:var(--error-color);background:#ef44441a;border:1px solid rgba(239,68,68,.2);border-radius:6px;cursor:pointer;font-size:.8rem;padding:6px 10px;transition:all .2s;display:flex;align-items:center;justify-content:center;flex-shrink:0}.mini-delete-button:hover{background:var(--error-color);color:#fff}.loading-overlay{display:flex;flex-direction:column;align-items:center;justify-content:center;height:350px}.spinner-large{width:45px;height:45px;border:4px solid rgba(59,130,246,.2);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1.2rem}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.welcome-message{text-align:center;padding:4rem 1rem}.welcome-message h2{color:var(--heading-color);margin-bottom:.8rem}.edit-group{margin-bottom:1.2rem}.edit-group label{display:block;color:var(--text-color-light);margin-bottom:6px;font-size:.85rem;font-weight:600}.edit-group input,.edit-group textarea{width:100%;padding:12px;background:#0f172a;border:1px solid var(--border-color);color:#fff;border-radius:8px;font-family:inherit;font-size:.95rem}.chat-bot-container{position:fixed;bottom:20px;right:20px;z-index:1000;display:flex;flex-direction:column;align-items:flex-end}.chat-bot-toggle{background:var(--primary-color);color:#fff;border:none;padding:12px 20px;border-radius:30px;font-weight:700;font-size:1rem;cursor:pointer;box-shadow:0 4px 12px #0000004d;transition:transform .2s}.chat-bot-toggle:hover{transform:scale(1.05)}.chat-bot-window{width:350px;height:500px;background:var(--surface-color);border:1px solid var(--border-color);border-radius:12px;display:flex;flex-direction:column;box-shadow:0 10px 25px #00000080;overflow:hidden;animation:fadeIn .3s ease-out}@media(max-width:400px){.chat-bot-window{width:300px;height:400px}}.chat-bot-header{background:var(--primary-color);color:#fff;padding:12px 16px;display:flex;justify-content:space-between;align-items:center}.chat-bot-header h3{font-size:1rem;margin:0}.chat-bot-header button{background:none;border:none;color:#fff;font-size:1.2rem;cursor:pointer}.chat-bot-messages{flex:1;padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:12px;background:var(--background-color)}.chat-message{display:flex;max-width:85%}.chat-message.user{align-self:flex-end}.chat-message.model{align-self:flex-start}.message-bubble{padding:10px 14px;border-radius:12px;font-size:.9rem;line-height:1.4;word-wrap:break-word}.chat-message.user .message-bubble{background:var(--primary-color);color:#fff;border-bottom-right-radius:2px}.chat-message.model .message-bubble{background:var(--surface-color);color:var(--text-color-light);border:1px solid var(--border-color);border-bottom-left-radius:2px}.message-bubble.loading{font-style:italic;opacity:.7}.chat-bot-input{display:flex;padding:12px;background:var(--surface-color);border-top:1px solid var(--border-color);gap:8px}.chat-bot-input input{flex:1;padding:10px;border-radius:20px;border:1px solid var(--border-color);background:var(--background-color);color:#fff;font-size:.9rem;outline:none}.chat-bot-input input:focus{border-color:var(--primary-color)}.chat-bot-input button{background:var(--primary-color);color:#fff;border:none;width:36px;height:36px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.1rem}.chat-bot-input button:disabled{background:var(--border-color);cursor:not-allowed}