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.message-body{max-width:75%}.message.user .message-bubble{background:#7c3aed26;border:1px solid rgba(124,58,237,.25);border-radius:var(--radius-sm) var(--radius-md) var(--radius-md) var(--radius-md)}.tool-status-line{display:flex;align-items:center;gap:6px;padding:3px 8px;margin:2px 0;background:#7c3aed12;border-left:2px solid var(--accent);border-radius:0 4px 4px 0;font-size:11.5px;color:#a78bfa;font-family:Courier New,monospace}.tool-spinner{width:10px;height:10px;flex-shrink:0;border:1.5px solid rgba(167,139,250,.3);border-top-color:#a78bfa;border-radius:50%;animation:spin .6s linear infinite}.header-profile{display:flex;align-items:center;gap:6px;background:none;border:none;cursor:pointer;color:var(--text-secondary);font-size:13px;padding:4px 8px;border-radius:var(--radius-sm);transition:background .15s,color .15s}.header-profile .avatar{width:28px;height:28px;font-size:12px}@media(max-width:768px){.sidebar,.admin-sidebar{position:fixed;top:0;left:0;bottom:0;z-index:100;transform:translate(0);width:280px!important;min-width:280px!important;max-width:85vw}.sidebar.collapsed,.admin-sidebar.collapsed{transform:translate(-100%);width:280px;align-items:stretch}.sidebar.collapsed .sidebar-search,.sidebar.collapsed .sidebar-section-label,.sidebar.collapsed .sidebar-logo span,.sidebar.collapsed .conv-item-title,.sidebar.collapsed .sidebar-user-btn span,.admin-sidebar.collapsed .admin-sidebar-item span,.admin-sidebar.collapsed .admin-sidebar-header span{display:flex}.sidebar-mobile-overlay{position:fixed;inset:0;background:#0009;z-index:90;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);opacity:1;transition:opacity var(--transition)}.header-left-tools{width:auto}.profile-username{display:none}.message-wrapper{padding:2px 12px 8px}.input-area{padding:0 8px 8px}.input-box{border-radius:var(--radius-md);padding:8px 10px}.send-btn,.stop-btn{width:32px;height:32px}input,textarea,select{font-size:16px!important}.conv-menu-btn{display:flex!important}}.library-container{max-width:900px;margin:0 auto;padding:24px;padding-top:max(24px,env(safe-area-inset-top));padding-bottom:env(safe-area-inset-bottom);display:flex;flex-direction:column;gap:32px;height:100%;overflow-y:auto}.library-header h2{font-size:24px;font-weight:700;margin:0 0 8px;color:var(--text-color)}.library-header p{font-size:14px;color:var(--text-muted)}.library-upload-zone{border:2px dashed rgba(255,255,255,.1);border-radius:16px;padding:40px;text-align:center;background:#ffffff05;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.library-upload-zone:hover,.library-upload-zone.drag-active{border-color:var(--primary-color);background:#ffffff0d}.library-upload-zone.uploading{pointer-events:none;opacity:.8}.upload-icon{width:48px;height:48px;background:#ffffff0d;border-radius:50%;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;color:var(--primary-color)}.upload-icon svg{width:24px;height:24px}.library-upload-zone h3{font-size:16px;margin:0 0 4px}.library-upload-zone p{font-size:14px;color:var(--text-muted);margin:0 0 12px}.upload-hint{font-size:12px;color:#fff6}.library-content h3{font-size:18px;font-weight:600;margin-bottom:16px;color:var(--text-color)}.library-empty{text-align:center;padding:48px 24px;color:var(--text-muted);background:#ffffff05;border-radius:12px}.library-empty svg{width:40px;height:40px;margin-bottom:12px;opacity:.5}.library-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.library-card{background:#ffffff0a;border:1px solid rgba(255,255,255,.06);border-radius:12px;padding:16px;display:flex;align-items:flex-start;justify-content:space-between;transition:all .2s}.library-card:hover{background:#ffffff0f;transform:translateY(-2px);box-shadow:0 4px 12px #0003}.card-info{flex:1;overflow:hidden}.card-info h4{margin:0 0 6px;font-size:15px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.card-meta{font-size:12px;color:var(--text-muted)}.card-delete-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:6px;border-radius:6px;margin-left:12px;transition:all .2s;flex-shrink:0}.card-delete-btn:hover{background:#ff3c3c1a;color:#f44}.upload-indicator{display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--primary-color)}.spinner{width:24px;height:24px;border:2px solid rgba(255,255,255,.1);border-top-color:currentColor;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}