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10px;font-size:13px;display:inline-flex}.btn-remove-attachment{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:0;font-size:15px;line-height:1}.btn-remove-attachment:hover{color:var(--text)}.message-attachment{color:var(--text-muted);margin-bottom:4px;font-size:12px}.message-feedback{align-items:center;gap:6px;margin-top:8px;display:flex}.btn-feedback{cursor:pointer;opacity:.6;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;width:26px;height:26px;font-size:13px;display:flex}.btn-feedback:hover,.btn-feedback.active{opacity:1;background:var(--bg-bubble-user)}.drop-overlay{z-index:10;background:var(--accent-tint);border:2px dashed var(--accent);pointer-events:none;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.drop-overlay p{color:var(--accent);margin:0;font-size:18px;font-weight:600}.app-loading{height:100svh;color:var(--text-muted);justify-content:center;align-items:center;font-size:14px;display:flex}.login-page{background:var(--bg);justify-content:center;align-items:center;height:100svh;display:flex}.login-card{flex-direction:column;gap:16px;width:100%;max-width:360px;padding:32px;display:flex}.login-card .brand-title{text-align:center;margin-bottom:4px;font-size:20px}.login-tabs{border:1px solid var(--border);border-radius:8px;display:flex;overflow:hidden}.login-tab{color:var(--text-muted);cursor:pointer;background:0 0;border:none;flex:1;padding:8px 0;font-size:13.5px}.login-tab.active{background:var(--accent-tint);color:var(--text);font-weight:500}.login-form{flex-direction:column;gap:10px;display:flex}.login-form input{border:1px solid var(--border);background:var(--bg);color:var(--text);font:inherit;border-radius:8px;padding:10px 12px;font-size:13.5px}.login-form input:focus{border-color:var(--accent);outline:none}.btn-login-submit{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:10px 0;font-size:13.5px;font-weight:500}.btn-login-submit:hover:not(:disabled){background:var(--accent-hover)}.btn-login-submit:disabled{background:var(--border);color:var(--text-muted);cursor:not-allowed}.login-divider{text-align:center;color:var(--text-muted);font-size:12px}.btn-google-login{border:1px solid var(--border);color:var(--text);cursor:pointer;background:0 0;border-radius:8px;padding:10px 0;font-size:13.5px}.btn-google-login:hover{background:var(--accent-tint);border-color:var(--accent)}.usage-indicator{color:var(--text-muted);white-space:nowrap;margin-left:16px;font-size:12px}.btn-logout{border:1px solid var(--border);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;margin-left:12px;padding:6px 12px;font-size:12.5px}.btn-logout:hover{background:var(--accent-tint);color:var(--text);border-color:var(--accent)}.sidebar-backdrop{display:none}@media (width<=768px){.top-bar{flex-wrap:wrap;row-gap:6px;height:auto;min-height:52px;padding:8px 12px}.sidebar{z-index:20;width:min(80vw,280px);position:fixed;top:52px;bottom:0;left:0;box-shadow:2px 0 12px #00000026}.sidebar-backdrop{z-index:15;background:#00000059;display:block;position:fixed;inset:52px 0 0}.message-list,.chat-input-wrapper{padding-left:12px;padding-right:12px}.message-bubble{max-width:88%}.suggestion-chips{padding-left:16px}.files-row{flex-direction:column;align-items:stretch}.files-row-name{white-space:normal;word-break:break-all}.files-row-meta{flex-shrink:1}.files-row-actions{flex-wrap:wrap}.files-row-action{flex:1}}@media (width<=400px){.login-card{padding:24px 20px}}.files-panel{flex-direction:column;flex:1;min-width:0;padding:20px 24px;display:flex;overflow:hidden auto}.files-panel-tabs{gap:8px;margin-bottom:16px;display:flex}.files-tab{border:1px solid var(--border);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:999px;padding:6px 12px;font-size:13px}.files-tab.active{background:var(--accent-tint);border-color:var(--accent);color:var(--text);font-weight:500}.files-list{flex-direction:column;gap:4px;width:100%;max-width:760px;display:flex}.files-row{border:1px solid var(--border);border-radius:8px;flex-wrap:wrap;align-items:center;gap:12px;padding:10px 12px;display:flex}.files-row-name{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:13.5px;overflow:hidden}.files-row-meta{color:var(--text-muted);flex-shrink:0;font-size:12px}.files-row-actions{flex-shrink:0;gap:6px;display:flex}.files-row-action{border:1px solid var(--border);color:var(--text);cursor:pointer;background:0 0;border-radius:6px;padding:5px 10px;font-size:12.5px}.files-row-action:hover{background:var(--accent-tint);border-color:var(--accent)}.files-row-action-delete:hover{color:#c24b3f;background:#c24b3f26;border-color:#c24b3f}.files-row-thumbnail{object-fit:cover;cursor:pointer;background:var(--accent-tint);border-radius:6px;flex-shrink:0;width:40px;height:40px}span.files-row-thumbnail{color:var(--text-muted);cursor:default;justify-content:center;align-items:center;display:flex}.files-row-thumbnail-loading{opacity:.5}.files-lightbox-overlay{z-index:30;background:#000000bf;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.files-lightbox-image{cursor:default;border-radius:8px;max-width:90vw;max-height:90vh}.files-lightbox-close{color:#fff;cursor:pointer;background:#ffffff26;border:none;border-radius:999px;width:36px;height:36px;font-size:22px;line-height:1;position:absolute;top:16px;right:20px}.files-lightbox-close:hover{background:#ffffff4d}