.app-container{display:flex;min-height:100vh;background:var(--bg-primary)}.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-width);background:var(--sidebar-bg);border-right:1px solid var(--border-light);display:flex;flex-direction:column;padding:20px 24px;transition:width var(--transition-normal);z-index:100}.sidebar.collapsed{width:var(--sidebar-collapsed);padding:20px 8px;align-items:center}.sidebar-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--border-light)}.logo-container{display:flex;align-items:center;gap:12px}.logo-icon{width:40px;height:40px;flex-shrink:0}.magma-icon{width:100%;height:100%;filter:drop-shadow(0 2px 4px 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var(--transition-fast)}.add-button:hover{background:var(--bg-tertiary);border-color:var(--magma-primary);box-shadow:var(--shadow-md)}.add-button svg{width:26px;height:26px;color:var(--magma-primary)}.sidebar.collapsed .sidebar-header{justify-content:center}.sidebar.collapsed .collapse-btn{position:absolute;right:8px}.sidebar.collapsed .add-button{width:auto;padding:12px;margin:0 0 26px;justify-content:center}.sidebar.collapsed .add-button span{display:none}.sidebar-nav{flex:1;overflow-y:auto}.nav-list{display:flex;flex-direction:column;gap:5px}.nav-item{display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:var(--radius-md);color:var(--text-secondary);font-size:14px;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.nav-item:hover{background:var(--bg-tertiary);color:var(--text-primary)}.nav-item.active{background:var(--magma-gradient);color:#fff}.nav-item.active .nav-icon{color:#fff}.nav-item.disabled,.add-button.disabled{opacity:.4;pointer-events:none;cursor:not-allowed}.nav-icon{width:22px;height:22px;flex-shrink:0;display:flex;align-items:center;justify-content:center}.nav-icon svg{width:20px;height:20px}.sidebar.collapsed .nav-item{justify-content:center;padding:12px}.sidebar.collapsed .nav-item span{display:none}.sidebar.collapsed .nav-section-title{text-align:center;padding:0;font-size:9px;letter-spacing:0}.sidebar.collapsed .chat-history{display:none}.nav-section-divider{height:0;margin:26px 0 18px}.nav-section-title{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-tertiary);padding:0 14px;margin-bottom:9px}.new-chat-item{color:var(--magma-primary)}.new-chat-item .nav-icon svg{stroke:var(--magma-primary)}.chat-history{padding:0 10px;margin-top:8px}.chat-history-label{font-size:10px;font-weight:500;color:var(--text-tertiary);padding:0 4px;margin-bottom:6px}.chat-list{list-style:none;padding:0;margin:0}.chat-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.chat-item:hover{background:var(--bg-secondary)}.chat-icon{flex-shrink:0;width:20px;height:20px}.chat-icon svg{width:100%;height:100%;stroke:var(--text-tertiary)}.chat-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.chat-title{font-size:12px;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-date{font-size:10px;color:var(--text-tertiary)}.sidebar-footer{position:relative;margin-top:auto;padding-top:18px;border-top:1px solid var(--border-light)}.profile-section{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.profile-section:hover{background:#ffffff80}.settings-btn{margin-left:auto;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-tertiary);transition:all var(--transition-fast)}.settings-btn:hover{background:#ffffff80;color:var(--text-primary)}.settings-btn svg{width:18px;height:18px}.sidebar.collapsed .settings-btn{display:none}.profile-popup{position:absolute;bottom:100%;left:16px;right:16px;margin-bottom:12px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);padding:16px;animation:slideUp .2s 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var(--border-light);color:var(--text-primary)}.popup-btn.google-btn:hover{background:var(--bg-tertiary);border-color:var(--border-medium)}.popup-btn.register-btn{text-align:center;background:var(--magma-gradient);color:#fff}.popup-btn.register-btn:hover{opacity:.9}.avatar{width:36px;height:36px;border-radius:50%;background:var(--magma-gradient);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:11px;flex-shrink:0;box-shadow:var(--shadow-magma)}.profile-info{display:flex;flex-direction:column}.profile-name{font-size:14px;font-weight:500;color:var(--text-primary)}.sidebar.collapsed .profile-section{justify-content:center;padding:10px}.sidebar.collapsed .profile-info{display:none}.main-content{flex:1;margin-left:var(--sidebar-width);display:flex;flex-direction:column;min-height:100vh;transition:margin-left var(--transition-normal);position:relative}.main-content.full-width{margin-left:0;width:100%}.sidebar.collapsed~.main-content{margin-left:var(--sidebar-collapsed)}.top-header{position:sticky;top:0;height:var(--header-height);display:flex;align-items:center;justify-content:center;padding:12px 32px;background:#fafafacc;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-light);z-index:50}.search-container{display:flex;align-items:center;width:100%;max-width:1360px;height:44px;padding:0 16px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-full);box-shadow:var(--shadow-sm);transition:all var(--transition-fast)}.search-container:focus-within{border-color:var(--magma-primary);box-shadow:0 0 0 3px #c92a2a1a}.search-icon{width:18px;height:18px;color:var(--magma-primary);flex-shrink:0}.search-input{flex:1;height:100%;padding:0 12px;font-size:11px;color:var(--text-primary);background:transparent}.search-input::placeholder{color:var(--text-tertiary)}.search-shortcuts{display:flex;align-items:center;gap:4px}.dev-toggle{position:fixed;bottom:20px;right:20px;display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:1000}.dev-toggle-label{font-size:11px;color:var(--text-tertiary);font-weight:500}.dev-toggle-btn{padding:6px 12px;font-size:11px;font-weight:500;border-radius:var(--radius-full);background:var(--bg-tertiary);color:var(--text-tertiary);border:1px solid var(--border-light);transition:all var(--transition-fast)}.dev-toggle-btn:hover{background:var(--bg-secondary);color:var(--text-primary)}.dev-toggle-btn.active{background:var(--magma-gradient);color:#fff;border-color:transparent}.settings-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:500;animation:fadeIn .2s ease}.settings-modal{width:70%;max-width:800px;max-height:85vh;background:var(--bg-secondary);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);display:flex;flex-direction:column;overflow:hidden;animation:scaleIn .2s ease}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid 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var(--transition-fast)}.settings-tab:hover{color:var(--text-primary)}.settings-tab.active{color:var(--magma-primary);border-bottom-color:var(--magma-primary)}.settings-content{flex:1;overflow-y:auto;padding:24px}.settings-section{max-width:500px}.settings-avatar-section{display:flex;align-items:center;gap:20px;margin-bottom:32px}.settings-avatar{width:80px;height:80px;border-radius:50%;background:var(--magma-gradient);display:flex;align-items:center;justify-content:center;color:#fff;font-size:28px;font-weight:600}.change-avatar-btn{padding:10px 20px;font-size:13px;font-weight:500;color:var(--magma-primary);background:var(--magma-light);border-radius:var(--radius-md);transition:all var(--transition-fast)}.change-avatar-btn:hover{background:var(--magma-subtle)}.settings-form{display:flex;flex-direction:column;gap:20px}.form-group.toggle-group{flex-direction:row;align-items:center;justify-content:space-between}.form-label{font-size:13px;font-weight:500;color:var(--text-primary)}.form-input,.form-textarea,.form-select{padding:12px 16px;font-size:14px;color:var(--text-primary);background:var(--bg-primary);border:1px solid var(--border-light);border-radius:var(--radius-md);transition:all var(--transition-fast)}.form-input:focus,.form-textarea:focus,.form-select:focus{border-color:var(--magma-primary);box-shadow:0 0 0 3px #c92a2a1a}.form-textarea{resize:vertical;min-height:80px}.form-select{cursor:pointer}.form-divider{height:1px;background:var(--border-light);margin:12px 0}.account-status{display:flex;align-items:center;gap:12px}.status-badge{padding:4px 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24px;font-size:14px;font-weight:500;color:var(--text-secondary);background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-md);transition:all var(--transition-fast)}.settings-btn-cancel:hover{background:var(--bg-tertiary);color:var(--text-primary)}.settings-btn-save{padding:10px 24px;font-size:14px;font-weight:500;color:#fff;background:var(--magma-gradient);border-radius:var(--radius-md);transition:all var(--transition-fast)}.settings-btn-save:hover{opacity:.9}.avatar-image{width:100%;height:100%;object-fit:cover;border-radius:50%}.photo-upload-overlay{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:600;animation:fadeIn .2s ease}.photo-upload-modal{width:400px;max-width:90%;background:var(--bg-secondary);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);overflow:hidden;animation:scaleIn .2s ease}.photo-upload-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border-light)}.photo-upload-title{font-size:16px;font-weight:600;color:var(--text-primary)}.photo-upload-close{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-tertiary);transition:all var(--transition-fast)}.photo-upload-close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.photo-upload-close svg{width:18px;height:18px}.photo-upload-content{padding:24px;display:flex;flex-direction:column;align-items:center;gap:20px}.photo-upload-preview{width:150px;height:150px;border-radius:50%;overflow:hidden;background:var(--bg-tertiary);border:3px dashed 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var(--border-light);border-bottom-left-radius:4px}.chat-container{width:100%;margin-bottom:32px}.chat-input-wrapper{background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);transition:all var(--transition-fast)}.chat-input-wrapper:focus-within{border-color:var(--magma-primary);box-shadow:var(--shadow-xl),0 0 0 3px #cf12221a}.chat-input{width:100%;min-height:56px;max-height:200px;padding:18px 20px;font-size:16px;color:var(--text-primary);background:transparent;resize:none;line-height:1.5}.chat-input::placeholder{color:var(--text-tertiary)}.chat-actions{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-top:1px solid var(--border-light);background:var(--bg-tertiary);border-radius:0 0 var(--radius-xl) var(--radius-xl)}.chat-actions-left{display:flex;align-items:center;gap:8px;position:relative}.chat-actions-right{display:flex;align-items:center;gap:12px}.action-btn{display:flex;align-items:center;gap:6px;padding:8px 12px;border-radius:var(--radius-md);color:var(--text-secondary);font-size:12px;font-weight:500;transition:all var(--transition-fast)}.action-btn:hover{background:var(--bg-secondary);color:var(--text-primary)}.action-btn svg{width:22px;height:22px}.attach-btn{padding:8px;border-radius:var(--radius-full)}.attach-container{position:relative}.attach-dropdown{position:absolute;bottom:100%;left:0;margin-bottom:8px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);padding:8px;min-width:180px;animation:slideUp .2s ease}.attach-option{display:flex;align-items:center;gap:10px;width:100%;padding:10px 12px;font-size:13px;color:var(--text-secondary);border-radius:var(--radius-sm);transition:all 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var(--transition-fast);cursor:pointer}.google-login-btn:hover{background:var(--bg-tertiary);border-color:var(--border-medium)}.google-login-btn svg{flex-shrink:0}.login-footer{text-align:center;font-size:14px;color:var(--text-secondary);margin-top:8px}.link-btn{background:none;border:none;color:var(--magma-primary);font-weight:600;cursor:pointer;padding:0;text-decoration:underline;transition:color var(--transition-fast)}.link-btn:hover{color:var(--magma-secondary)}@media(max-width:768px){.create-post-form,.post-detail{padding:20px}.form-title,.post-detail-title{font-size:24px}.comment-item.reply{margin-left:16px}}:root{--magma-primary: #C92A2A;--magma-secondary: #E64A19;--magma-light: #FFEBE6;--magma-gradient: linear-gradient(90deg, #C92A2A 0%, #E64A19 100%);--magma-subtle: linear-gradient(135deg, rgba(201, 42, 42, .08) 0%, rgba(230, 74, 25, .04) 100%);--sidebar-bg: #EEF2F6;--bg-primary: #FAFAFA;--bg-secondary: #FFFFFF;--bg-tertiary: #F5F5F5;--bg-dark: #1A1A1A;--text-primary: 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