:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a2e;--bg-hover: #252540;--accent-primary: #3b82f6;--accent-secondary: #2563eb;--accent-tertiary: #1d4ed8;--accent-glow: rgba(59, 130, 246, .3);--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--border-primary: #1e293b;--border-secondary: #334155;--border-focus: #3b82f6;--error: #ef4444;--error-bg: rgba(239, 68, 68, .15);--success: #22c55e;--success-bg: rgba(34, 197, 94, .15);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);--shadow-md: 0 4px 6px rgba(0, 0, 0, .5);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px var(--accent-glow);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--transition-fast: .15s ease;--transition-normal: .25s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6}input,button{font-family:inherit;font-size:inherit}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.auth-card{background-color:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:var(--radius-lg);padding:40px;width:100%;max-width:400px;box-shadow:var(--shadow-lg)}.auth-title{font-size:28px;font-weight:600;text-align:center;margin-bottom:8px;color:var(--text-primary)}.auth-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:32px;font-size:14px}.auth-form{display:flex;flex-direction:column;gap:16px}.auth-input{background-color:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);padding:12px 16px;color:var(--text-primary);font-size:15px;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.auth-input::placeholder{color:var(--text-muted)}.auth-input:focus{outline:none;border-color:var(--border-focus);box-shadow:var(--shadow-glow)}.auth-button{background-color:var(--accent-primary);color:var(--text-primary);border:none;border-radius:var(--radius-md);padding:12px 16px;font-size:15px;font-weight:500;cursor:pointer;transition:background-color var(--transition-fast),box-shadow var(--transition-fast);margin-top:8px}.auth-button:hover{background-color:var(--accent-secondary);box-shadow:var(--shadow-glow)}.auth-button:active{background-color:var(--accent-tertiary)}.auth-switch{text-align:center;margin-top:24px;color:var(--text-secondary);font-size:14px}.auth-switch-link{color:var(--accent-primary);cursor:pointer;text-decoration:none;margin-left:4px;transition:color var(--transition-fast)}.auth-switch-link:hover{color:var(--accent-secondary);text-decoration:underline}.auth-error{background-color:var(--error-bg);border:1px solid var(--error);border-radius:var(--radius-md);padding:12px;color:var(--error);font-size:13px}.diary-container{height:100%;display:flex;flex-direction:column;background-color:var(--bg-primary);overflow:hidden}.diary-header{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;background-color:var(--bg-secondary);border-bottom:1px solid var(--border-primary)}.diary-logo{font-size:20px;font-weight:600;color:var(--accent-primary)}.diary-user{display:flex;align-items:center;gap:16px}.diary-email{color:var(--text-secondary);font-size:14px}.diary-signout{background-color:transparent;color:var(--text-secondary);border:1px solid var(--border-secondary);border-radius:var(--radius-md);padding:8px 16px;font-size:14px;cursor:pointer;transition:all var(--transition-fast)}.diary-signout:hover{background-color:var(--bg-hover);color:var(--text-primary)}.diary-book{flex:1;display:flex;flex-direction:column;align-items:center;padding:24px;overflow:hidden;min-height:0}.diary-book-inner{width:100%;max-width:800px;height:100%;display:flex;flex-direction:column;background-color:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}.diary-nav{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;background-color:var(--bg-tertiary);border-bottom:1px solid var(--border-primary)}.diary-nav-btn{background-color:transparent;color:var(--text-secondary);border:1px solid var(--border-secondary);border-radius:var(--radius-md);padding:8px 16px;font-size:14px;cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:center;gap:8px}.diary-nav-btn:hover:not(:disabled){background-color:var(--bg-hover);color:var(--text-primary);border-color:var(--accent-primary)}.diary-nav-btn:disabled{opacity:.5;cursor:not-allowed}.diary-date{text-align:center}.diary-date-day{font-size:14px;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px}.diary-date-full{font-size:24px;font-weight:600;color:var(--text-primary)}.diary-date-today{font-size:12px;color:var(--accent-primary);margin-top:4px}.diary-page{flex:1;padding:24px;overflow-y:auto;min-height:0;display:flex;flex-direction:column}.diary-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;color:var(--text-muted)}.diary-empty-icon{font-size:48px;margin-bottom:16px}.diary-empty-text{font-size:16px;margin-bottom:8px}.diary-empty-hint{font-size:14px;color:var(--text-muted)}.diary-tasks{display:flex;flex-direction:column;gap:16px}.diary-task{background-color:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);padding:16px;transition:all var(--transition-fast)}.diary-task:hover{border-color:var(--border-secondary)}.diary-task-header{display:flex;align-items:center;gap:12px}.diary-task-checkbox{width:20px;height:20px;border:2px solid var(--border-secondary);border-radius:4px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);flex-shrink:0}.diary-task-checkbox:hover{border-color:var(--accent-primary)}.diary-task-checkbox.checked{background-color:var(--accent-primary);border-color:var(--accent-primary)}.diary-task-checkbox.checked:after{content:"✓";color:#fff;font-size:12px}.diary-task-text{flex:1;font-size:16px;color:var(--text-primary)}.diary-task-text.completed{text-decoration:line-through;color:var(--text-muted)}.diary-task-delete{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px 8px;font-size:18px;opacity:0;transition:all var(--transition-fast)}.diary-task:hover .diary-task-delete{opacity:1}.diary-task-delete:hover{color:var(--error)}.diary-subtasks{margin-top:12px;margin-left:32px;display:flex;flex-direction:column;gap:8px}.diary-subtask{display:flex;align-items:center;gap:10px;position:relative}.diary-subtask-checkbox{width:16px;height:16px;border:2px solid var(--border-secondary);border-radius:3px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);flex-shrink:0}.diary-subtask-checkbox:hover{border-color:var(--accent-primary)}.diary-subtask-checkbox.checked{background-color:var(--accent-primary);border-color:var(--accent-primary)}.diary-subtask-checkbox.checked:after{content:"✓";color:#fff;font-size:10px}.diary-subtask-text{font-size:14px;color:var(--text-secondary)}.diary-subtask-text.completed{text-decoration:line-through;color:var(--text-muted)}.diary-subtask-delete{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:2px 6px;font-size:14px;opacity:0;transition:all var(--transition-fast);margin-left:8px}.diary-subtask:hover .diary-subtask-delete{opacity:1}.diary-subtask-delete:hover{color:var(--error)}.diary-add-subtask-btn{background:none;border:none;color:var(--text-muted);font-size:12px;cursor:pointer;padding:4px 0;margin-top:4px;transition:color var(--transition-fast)}.diary-add-subtask-btn:hover{color:var(--accent-primary)}.diary-add-subtask-input{margin-top:4px}.diary-edit-input{flex:1;background-color:var(--bg-primary);border:1px solid var(--accent-primary);border-radius:var(--radius-sm);padding:4px 8px;color:var(--text-primary);font-size:16px;outline:none}.diary-edit-input-subtask{font-size:14px;padding:2px 6px}.diary-task-text,.diary-subtask-text{cursor:pointer}.diary-task-text:hover,.diary-subtask-text:hover{color:var(--accent-primary)}.diary-voice-container{padding:16px 24px;background-color:var(--bg-tertiary);border-top:1px solid var(--border-primary);display:flex;flex-direction:column;align-items:center;justify-content:center;flex-shrink:0}.diary-voice-btn{background-color:var(--accent-primary);color:#fff;border:none;border-radius:50%;width:64px;height:64px;font-size:24px;cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md)}.diary-voice-btn:hover{background-color:var(--accent-secondary);transform:scale(1.05);box-shadow:var(--shadow-glow)}.diary-voice-btn.recording{background-color:var(--error);animation:pulse 1.5s infinite}@keyframes pulse{0%,to{transform:scale(1);box-shadow:0 0 #ef4444b3}50%{transform:scale(1.05);box-shadow:0 0 0 15px #ef444400}}.diary-voice-hint{font-size:12px;color:var(--text-muted);text-align:center;margin-top:8px}.diary-knowledge-used{display:flex;align-items:center;gap:8px;padding:8px 16px;background-color:var(--accent-glow);border-radius:var(--radius-md);margin-bottom:16px;font-size:13px;color:var(--accent-primary);animation:fadeIn .3s ease}.diary-knowledge-icon{font-size:16px}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.diary-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:300px;color:var(--text-secondary)}.diary-loading-spinner{width:40px;height:40px;border:3px solid var(--border-secondary);border-top-color:var(--accent-primary);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:16px}@keyframes spin{to{transform:rotate(360deg)}}.diary-add-task{display:flex;gap:12px;margin-top:auto;padding-top:16px}.diary-add-input{flex:1;background-color:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:var(--radius-md);padding:12px 16px;color:var(--text-primary);font-size:14px}.diary-add-input::placeholder{color:var(--text-muted)}.diary-add-input:focus{outline:none;border-color:var(--accent-primary)}.diary-add-btn{background-color:var(--accent-primary);color:#fff;border:none;border-radius:var(--radius-md);padding:12px 20px;font-size:14px;cursor:pointer;transition:all var(--transition-fast)}.diary-add-btn:hover{background-color:var(--accent-secondary)}@media(max-width:768px){.diary-book{padding:8px}.diary-nav{padding:10px 12px;gap:8px}.diary-nav-btn{padding:6px 10px;font-size:12px}.diary-date-day{font-size:11px}.diary-date-full{font-size:16px}.diary-page{padding:12px}.diary-voice-container{padding:12px 16px;flex-direction:row;gap:12px}.diary-voice-btn{width:48px;height:48px}.diary-voice-btn svg{width:22px;height:22px}.diary-voice-hint{margin-top:0;text-align:left}.diary-add-task{margin-top:12px;gap:8px}.diary-add-input{padding:10px 12px;font-size:13px}.diary-add-btn{padding:10px 14px;font-size:13px}.diary-task-text{font-size:14px}.diary-subtask-text{font-size:12px}}.brain{display:flex;flex-direction:column;height:100%;width:100%;background-color:var(--bg-secondary);border-left:1px solid var(--border-primary)}.brain-header{display:flex;justify-content:space-between;align-items:center;padding:16px;border-bottom:1px solid var(--border-primary)}.brain-title{font-size:16px;font-weight:600;color:var(--accent-primary)}.brain-add-btn{background-color:var(--accent-primary);color:#fff;border:none;border-radius:var(--radius-sm);padding:6px 12px;font-size:13px;cursor:pointer;transition:all var(--transition-fast)}.brain-add-btn:hover{background-color:var(--accent-secondary)}.brain-list{flex:1;overflow-y:auto;padding:8px}.brain-doc{margin-bottom:4px}.brain-doc-header{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast)}.brain-doc-header:hover{background-color:var(--bg-hover)}.brain-doc-header.selected{background-color:var(--accent-glow);border-left:2px solid var(--accent-primary)}.brain-doc-expand{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:0;width:16px;font-size:10px;transition:transform var(--transition-fast)}.brain-doc-expand.expanded{transform:rotate(90deg)}.brain-doc-expand.hidden{visibility:hidden}.brain-doc-title{flex:1;font-size:14px;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.brain-doc-actions{display:flex;gap:4px;opacity:0;transition:opacity var(--transition-fast)}.brain-doc-header:hover .brain-doc-actions{opacity:1}.brain-doc-action{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:2px 6px;font-size:12px;border-radius:var(--radius-sm)}.brain-doc-action:hover{background-color:var(--bg-tertiary);color:var(--text-primary)}.brain-doc-action.delete:hover{color:var(--error)}.brain-doc-children{margin-left:20px}.brain-editor{flex:2;display:flex;flex-direction:column;border-top:1px solid var(--border-primary);min-height:300px}.brain-editor-header{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--border-primary)}.brain-editor-title{flex:1;background:transparent;border:none;color:var(--text-primary);font-size:16px;font-weight:500;outline:none}.brain-editor-title:focus{border-bottom:1px solid var(--accent-primary)}.brain-save-btn{background-color:var(--bg-tertiary);color:var(--text-muted);border:1px solid var(--border-secondary);border-radius:var(--radius-md);padding:6px 14px;font-size:12px;cursor:not-allowed;transition:all var(--transition-fast);flex-shrink:0}.brain-save-btn.unsaved{background-color:var(--accent-primary);color:#fff;border-color:var(--accent-primary);cursor:pointer}.brain-save-btn.unsaved:hover{background-color:var(--accent-secondary)}.brain-editor-content{flex:1;padding:16px;background:transparent;border:none;color:var(--text-primary);font-size:14px;line-height:1.6;resize:none;outline:none}.brain-editor-content::placeholder{color:var(--text-muted)}.brain-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted);padding:24px;text-align:center}.brain-empty-icon{font-size:32px;margin-bottom:12px}.brain-empty-text{font-size:14px}.brain-edit-input{flex:1;background-color:var(--bg-primary);border:1px solid var(--accent-primary);border-radius:var(--radius-sm);padding:4px 8px;color:var(--text-primary);font-size:14px;outline:none}.brain-mobile-toggle{display:none;position:fixed;bottom:100px;right:20px;background-color:var(--accent-primary);color:#fff;border:none;border-radius:50%;width:48px;height:48px;font-size:20px;cursor:pointer;box-shadow:var(--shadow-lg);z-index:100}@media(max-width:768px){.brain-mobile-toggle{display:flex;align-items:center;justify-content:center}}.app-layout{display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden}.app-header{display:flex;justify-content:space-between;align-items:center;padding:12px 24px;background-color:var(--bg-secondary);border-bottom:1px solid var(--border-primary);flex-shrink:0}.app-logo{font-size:20px;font-weight:600;color:var(--accent-primary)}.app-user{display:flex;align-items:center;gap:16px}.app-email{color:var(--text-secondary);font-size:14px}.app-signout{background-color:transparent;color:var(--text-secondary);border:1px solid var(--border-secondary);border-radius:var(--radius-md);padding:8px 16px;font-size:14px;cursor:pointer;transition:all var(--transition-fast)}.app-signout:hover{background-color:var(--bg-hover);color:var(--text-primary)}.app-content{display:flex;flex:1;overflow:hidden}.app-panel{overflow-y:auto}.app-panel-left{flex:1;min-width:0}.app-panel-right{width:480px;flex-shrink:0}.app-divider{width:4px;background-color:var(--border-primary);cursor:col-resize;transition:background-color var(--transition-fast)}.app-divider:hover{background-color:var(--accent-primary)}@media(max-width:768px){.app-header{padding:8px 12px}.app-logo{font-size:16px}.app-email{display:none}.app-signout{padding:6px 12px;font-size:12px}.app-content{flex-direction:column}.app-panel-left{flex:1;height:auto}.app-panel-right{display:none}.app-panel-right.mobile-open{display:flex;position:fixed;inset:0;width:100vw;height:100dvh;z-index:1000;background-color:var(--bg-secondary)}.app-divider{display:none}}.mobile-brain-toggle{display:none;background-color:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-secondary);border-radius:50%;width:48px;height:48px;font-size:18px;cursor:pointer;transition:all var(--transition-fast);align-items:center;justify-content:center;flex-shrink:0}.mobile-brain-toggle:hover{background-color:var(--bg-hover);border-color:var(--accent-primary);color:var(--accent-primary)}@media(max-width:768px){.mobile-brain-toggle{display:flex}}.brain-close-btn{display:none;background:none;border:none;color:var(--text-secondary);font-size:24px;cursor:pointer;padding:4px 8px}.brain-close-btn:hover{color:var(--text-primary)}@media(max-width:768px){.brain-close-btn{display:block}}