:root{--color-bg:#f7f9fc;--color-surface:#fff;--color-surface-hover:#f2f4f6;--color-surface-subtle:#f9fafb;--color-text-primary:#191f28;--color-text-secondary:#4e5968;--color-text-tertiary:#8b95a1;--color-border:#e5e8eb;--color-border-light:#f2f4f6;--color-primary:#3182f6;--color-primary-hover:#1b64da;--color-primary-light:#e8f3ff;--color-primary-border:#b8d7ff;--color-success:#03b26c;--color-success-light:#e6f8f0;--color-warning:#ff9500;--color-warning-light:#fff5e6;--color-danger:#f04452;--color-danger-light:#feecee;--color-reasoning-bg:#f8fafc;--color-reasoning-border:#e2e8f0;--color-reasoning-text:#475569;--radius-xs:6px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--radius-full:9999px;--shadow-sm:0 1px 3px #0000000d;--shadow-md:0 4px 12px #0000000f;--shadow-lg:0 8px 24px #00000014;--font-family:"Pretendard", -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo", sans-serif;--transition-fast:.15s ease;--transition-normal:.25s cubic-bezier(.16, 1, .3, 1)}@media (prefers-color-scheme:dark){:root.dark-theme{--color-bg:#0f1318;--color-surface:#181d24;--color-surface-hover:#222730;--color-surface-subtle:#14181f;--color-text-primary:#f7f9fc;--color-text-secondary:#9aa5b5;--color-text-tertiary:#6b7684;--color-border:#2a303c;--color-border-light:#1f2530;--color-primary-light:#17283c;--color-primary-border:#1e3d64;--color-reasoning-bg:#141922;--color-reasoning-border:#232d3d;--color-reasoning-text:#94a3b8}}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;font-family:var(--font-family);background-color:var(--color-bg);color:var(--color-text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button{cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;outline:none;font-family:inherit}button:disabled{cursor:not-allowed;opacity:.5}input,textarea,select{outline:none;font-family:inherit}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:9999px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-tertiary)}.app-container{background-color:var(--color-bg);width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{background-color:var(--color-surface);border-right:1px solid var(--color-border);width:280px;min-width:280px;height:100%;transition:transform var(--transition-normal);z-index:20;flex-direction:column;display:flex}.sidebar.hidden{position:absolute;transform:translate(-100%)}.sidebar-header{border-bottom:1px solid var(--color-border-light);justify-content:space-between;align-items:center;padding:18px 16px 14px;display:flex}.brand-row{align-items:center;gap:10px;display:flex}.brand-logo-icon{color:#fff;background:#0f172a;border:1px solid #ffffff1a;border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;text-decoration:none;transition:transform .15s,background-color .15s;display:flex;box-shadow:0 2px 6px #0f172a40}.brand-logo-icon:hover{background:#1e293b;transform:translateY(-1px)}.brand-title{color:var(--color-text-primary);letter-spacing:-.3px;font-size:17px;font-weight:700}.new-chat-btn{background-color:var(--color-primary-light);color:var(--color-primary);border-radius:var(--radius-md);transition:all var(--transition-fast);justify-content:center;align-items:center;gap:8px;margin:14px 16px 8px;padding:12px 14px;font-size:14px;font-weight:600;display:flex}.new-chat-btn:hover{background-color:var(--color-primary-border)}.session-list-scroll{flex-direction:column;flex:1;gap:4px;padding:8px 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0;border:none;min-height:24px;max-height:180px;font-size:15px;line-height:1.5}.chat-textarea::placeholder{color:var(--color-text-tertiary)}.input-bottom-row{justify-content:space-between;align-items:center;display:flex}.input-meta-hint{color:var(--color-text-tertiary);font-size:12px}.send-action-btn{border-radius:var(--radius-full);width:36px;height:36px;transition:all var(--transition-fast);justify-content:center;align-items:center;display:flex}.send-action-btn.send{background-color:var(--color-primary);color:#fff}.send-action-btn.send:hover:not(:disabled){background-color:var(--color-primary-hover);transform:scale(1.05)}.send-action-btn.stop{background-color:var(--color-danger);color:#fff}.send-action-btn.stop:hover{opacity:.9}.modal-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;background-color:#00000073;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal-card{background-color:var(--color-surface);width:100%;max-width:680px;max-height:85vh;box-shadow:var(--shadow-lg);border-radius:24px;flex-direction:column;animation:.2s cubic-bezier(.16,1,.3,1) modalPop;display:flex;overflow:hidden}.modal-card.settings-card{max-width:520px}@keyframes modalPop{0%{opacity:0;transform:scale(.96)translateY(10px)}to{opacity:1;transform:scale(1)translateY(0)}}.modal-header{border-bottom:1px solid var(--color-border-light);justify-content:space-between;align-items:flex-start;padding:20px 24px 16px;display:flex}.modal-title-row{align-items:center;gap:12px;display:flex}.modal-icon-badge{border-radius:var(--radius-md);background-color:var(--color-primary-light);justify-content:center;align-items:center;width:40px;height:40px;display:flex}.modal-title{color:var(--color-text-primary);letter-spacing:-.3px;font-size:19px;font-weight:700}.modal-subtitle{color:var(--color-text-secondary);margin-top:2px;font-size:13px}.modal-close-btn{border-radius:var(--radius-sm);color:var(--color-text-tertiary);padding:6px}.modal-close-btn:hover{background-color:var(--color-surface-hover);color:var(--color-text-primary)}.modal-search-section{background-color:var(--color-surface);border-bottom:1px solid var(--color-border-light);flex-direction:column;gap:12px;padding:14px 24px 10px;display:flex}.search-input-wrapper{background-color:var(--color-surface-subtle);border:1px solid var(--color-border);border-radius:var(--radius-md);align-items:center;gap:10px;padding:10px 14px;display:flex}.search-icon{color:var(--color-text-tertiary)}.search-input{color:var(--color-text-primary);background:0 0;border:none;flex:1;font-size:14px}.clear-search-btn{color:var(--color-text-tertiary);padding:2px}.sort-tab-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.sort-chips{align-items:center;gap:6px;padding-bottom:2px;display:flex;overflow-x:auto}.sort-tab-btn{border-radius:var(--radius-full);background-color:var(--color-surface-subtle);color:var(--color-text-secondary);border:1px solid var(--color-border);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;padding:5px 12px;font-size:12px;font-weight:500}.sort-tab-btn:hover{background-color:var(--color-surface-hover);color:var(--color-text-primary)}.sort-tab-btn.active{color:#1d4ed8;background-color:#eff6ff;border-color:#93c5fd;font-weight:700;box-shadow:0 1px 3px #2563eb26}.modality-filter-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.modality-chips{align-items:center;gap:6px;padding-bottom:2px;display:flex;overflow-x:auto}.modality-tab-btn{border-radius:var(--radius-full);background-color:var(--color-surface-subtle);color:var(--color-text-secondary);border:1px solid var(--color-border);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;padding:5px 12px;font-size:12px;font-weight:500}.modality-tab-btn.active{background-color:var(--color-primary-light);color:var(--color-primary);border-color:var(--color-primary-border);font-weight:700}.provider-chips-container{align-items:center;gap:6px;padding-bottom:4px;display:flex;overflow-x:auto}.provider-chip{border-radius:var(--radius-full);background-color:var(--color-surface-subtle);color:var(--color-text-secondary);border:1px solid var(--color-border);white-space:nowrap;padding:6px 12px;font-size:12px;font-weight:500}.provider-chip:hover{background-color:var(--color-surface-hover)}.provider-chip.active{background-color:var(--color-primary-light);color:var(--color-primary);border-color:var(--color-primary-border);font-weight:600}.model-list-scroll{flex-direction:column;flex:1;gap:10px;padding:14px 24px;display:flex;overflow-y:auto}.model-card-item{background-color:var(--color-surface);border:1.5px solid var(--color-border);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);flex-direction:column;gap:10px;padding:16px 18px;display:flex}.model-card-item:hover{border-color:var(--color-primary-border);background-color:var(--color-surface-subtle);transform:translateY(-1px)}.model-card-item.selected{border-color:var(--color-primary);background-color:var(--color-primary-light);box-shadow:0 2px 8px #3182f626}.model-card-top{justify-content:space-between;align-items:center;display:flex}.model-name-group{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.model-provider-badge{color:var(--color-text-secondary);background-color:var(--color-surface-hover);border-radius:4px;padding:2px 6px;font-size:11px;font-weight:600}.model-name-text{color:var(--color-text-primary);letter-spacing:-.2px;font-size:16px;font-weight:700}.new-badge{background-color:var(--color-danger);color:#fff;border-radius:var(--radius-full);padding:2px 6px;font-size:10px;font-weight:800}.check-badge{border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;display:flex}.check-badge.selected{background-color:var(--color-primary)}.check-badge.unselected{border:1.5px solid var(--color-border)}.model-tags-row{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.meta-pill{border-radius:6px;align-items:center;gap:4px;padding:3px 8px;font-size:12px;font-weight:500;display:flex}.meta-pill.intel-pill{color:#4338ca;background:linear-gradient(135deg,#eef2ff,#e0e7ff);border:1px solid #c7d2fe;font-weight:600}.meta-pill.intel-pill strong{color:#3730a3;font-weight:800}.meta-pill.coding-pill{color:#0e7490;background-color:#ecfeff;border:1px solid #a5f3fc;font-weight:600}.meta-pill.coding-pill strong{color:#155e75;font-weight:800}.meta-pill.effort-pill{color:#b45309;background-color:#fffbeb;border:1px solid #fde68a;font-weight:600}.meta-pill.modality-badge{font-weight:600}.meta-pill.modality-badge.image{color:#be185d;background-color:#fdf2f8;border:1px solid #fbcfe8}.meta-pill.modality-badge.audio{color:#15803d;background-color:#f0fdf4;border:1px solid #bbf7d0}.meta-pill.modality-badge.video{color:#7e22ce;background-color:#faf5ff;border:1px solid #e9d5ff}.meta-pill.modality-badge.text{color:#64748b;background-color:#f8fafc;border:1px solid #e2e8f0}.meta-pill.date-pill{color:#475569;background-color:#f1f5f9}.meta-pill.tier-pill{color:#1d4ed8;background-color:#eff6ff;font-weight:600}.meta-pill.param-pill{color:#6d28d9;background-color:#f5f3ff}.meta-pill.ctx-pill{color:#047857;background-color:#ecfdf5}.model-desc-text{color:var(--color-text-secondary);font-size:13px;line-height:1.5}.modal-footer{border-top:1px solid var(--color-border-light);background-color:var(--color-surface);justify-content:space-between;align-items:center;padding:14px 24px;display:flex}.modal-footer-tip{color:var(--color-text-tertiary);align-items:center;gap:6px;font-size:12px;display:flex}.modal-confirm-btn{border-radius:var(--radius-md);background-color:var(--color-surface-hover);color:var(--color-text-primary);padding:8px 18px;font-size:14px;font-weight:600}.modal-confirm-btn:hover{background-color:var(--color-border)}.settings-body{flex-direction:column;gap:18px;padding:20px 24px;display:flex}.setting-item{flex-direction:column;gap:6px;display:flex}.setting-label{color:var(--color-text-primary);align-items:center;gap:6px;font-size:14px;font-weight:600;display:flex}.setting-input{border-radius:var(--radius-md);border:1px solid var(--color-border);color:var(--color-text-primary);padding:10px 14px;font-size:14px}.setting-input:focus{border-color:var(--color-primary)}.setting-hint{color:var(--color-text-tertiary);font-size:12px}.connection-test-row{align-items:center;gap:12px;margin-top:6px;display:flex}.test-badge{border-radius:4px;padding:4px 8px;font-size:12px;font-weight:600}.test-badge.success{background-color:var(--color-success-light);color:var(--color-success)}.test-badge.fail{background-color:var(--color-danger-light);color:var(--color-danger)}.primary-btn{border-radius:var(--radius-md);background-color:var(--color-primary);color:#fff;align-items:center;gap:6px;padding:10px 18px;font-size:14px;font-weight:600;display:flex}.primary-btn:hover{background-color:var(--color-primary-hover)}.secondary-btn{border-radius:var(--radius-md);background-color:var(--color-surface-subtle);border:1px solid var(--color-border);color:var(--color-text-primary);align-items:center;gap:6px;padding:8px 14px;font-size:13px;font-weight:500;display:flex}.secondary-btn:hover{background-color:var(--color-surface-hover)}.ghost-btn{border-radius:var(--radius-md);color:var(--color-text-secondary);align-items:center;gap:6px;padding:8px 14px;font-size:14px;font-weight:500;display:flex}.ghost-btn:hover{background-color:var(--color-surface-hover);color:var(--color-text-primary)}.footer-actions{align-items:center;gap:8px;display:flex}.modality-filter-row{align-items:center;gap:10px;margin-top:10px;padding:4px 0;display:flex;overflow-x:auto}.filter-label{color:var(--color-text-secondary);white-space:nowrap;font-size:13px;font-weight:600}.modality-chips{flex-wrap:nowrap;align-items:center;gap:6px;display:flex}.modality-tab-btn{border-radius:var(--radius-full);background-color:var(--color-surface-subtle);border:1px solid var(--color-border);color:var(--color-text-secondary);white-space:nowrap;transition:all var(--transition-fast);cursor:pointer;padding:6px 12px;font-size:13px;font-weight:500}.modality-tab-btn:hover{background-color:var(--color-surface-hover);color:var(--color-text-primary)}.modality-tab-btn.active{background-color:var(--color-primary-light);border-color:var(--color-primary);color:var(--color-primary);font-weight:600}.modality-badge{font-weight:600!important}.modality-badge.image{border:1px solid #3182f640;color:#3182f6!important;background-color:#3182f61a!important}.modality-badge.audio{border:1px solid #00a86b40;color:#00a86b!important;background-color:#00a86b1a!important}.modality-badge.video{border:1px solid #8e44ad40;color:#8e44ad!important;background-color:#8e44ad1a!important}.modality-badge.text{background-color:var(--color-surface-subtle)!important;color:var(--color-text-tertiary)!important}.trigger-modality-tags{align-items:center;gap:3px;margin-left:2px;display:flex}.trigger-mod-tag{font-size:14px;line-height:1}.welcome-modality-tip{background-color:var(--color-primary-light);color:var(--color-primary);border-radius:var(--radius-md);margin-top:6px;padding:6px 12px;font-size:13px;font-weight:500;display:inline-block}.messages-viewport.dragging-over{position:relative}.drag-drop-overlay{border-radius:var(--radius-lg);z-index:50;pointer-events:none;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background-color:#3182f614;border:2px dashed #3182f6;justify-content:center;align-items:center;margin:16px;display:flex;position:absolute;inset:0}.drag-drop-card{background-color:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);text-align:center;flex-direction:column;align-items:center;gap:8px;padding:24px 32px;display:flex}.drag-drop-title{color:var(--color-text-primary);font-size:16px;font-weight:700}.drag-drop-desc{color:var(--color-text-secondary);font-size:13px}.pending-attachments-bar{border-bottom:1px solid var(--color-border-light);align-items:center;gap:10px;padding:10px 14px 4px;display:flex;overflow-x:auto}.pending-attachment-chip{background-color:var(--color-surface-subtle);border:1px solid var(--color-border);border-radius:var(--radius-md);flex-shrink:0;align-items:center;gap:8px;max-width:260px;padding:6px 10px;font-size:13px;display:flex}.pending-thumb{object-fit:cover;border:1px solid var(--color-border-light);border-radius:6px;width:32px;height:32px}.pending-file-info{flex-direction:column;display:flex;overflow:hidden}.pending-file-name{color:var(--color-text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:12px;font-weight:500;overflow:hidden}.pending-file-size{color:var(--color-text-tertiary);font-size:11px}.pending-remove-btn{color:var(--color-text-tertiary);cursor:pointer;border-radius:var(--radius-full);transition:all var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;padding:2px;display:flex}.pending-remove-btn:hover{background-color:var(--color-danger-light);color:var(--color-danger)}.input-left-tools{align-items:center;gap:6px;display:flex}.input-right-tools{align-items:center;gap:12px;display:flex}.attach-tool-btn{border-radius:var(--radius-md);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast);background-color:#0000;border:1px solid #0000;align-items:center;gap:5px;padding:6px 10px;font-size:12px;font-weight:500;display:flex}.attach-tool-btn.active:hover{background-color:var(--color-surface-subtle);color:var(--color-primary);border-color:var(--color-border)}.attach-tool-btn.disabled{opacity:.4;cursor:not-allowed}.attach-btn-label{color:var(--color-text-secondary);font-size:12px}.user-attachments-grid{flex-wrap:wrap;gap:10px;margin-bottom:8px;display:flex}.user-media-thumbnail{cursor:pointer;max-width:280px;max-height:220px;transition:transform var(--transition-fast), box-shadow var(--transition-fast);background-color:#0000000d;border-radius:12px;overflow:hidden}.user-media-thumbnail:hover{transform:scale(1.02);box-shadow:0 4px 12px #00000026}.user-media-thumbnail img{object-fit:cover;width:100%;height:100%;display:block}.user-video-container{border-radius:12px;max-width:340px;overflow:hidden}.user-video-player{background-color:#000;border-radius:12px;width:100%;max-height:240px}.user-audio-container{background-color:#fff3;border-radius:12px;flex-direction:column;gap:6px;min-width:260px;padding:10px 14px;display:flex}.user-audio-header{align-items:center;gap:6px;font-size:13px;font-weight:500;display:flex}.user-audio-name{white-space:nowrap;text-overflow:ellipsis;max-width:220px;overflow:hidden}.user-audio-player{width:100%;height:36px}.user-text-content{white-space:pre-wrap;word-break:break-word}.media-preview-backdrop{z-index:1000;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background-color:#000000bf;justify-content:center;align-items:center;padding:24px;animation:.2s ease-out fadeIn;display:flex;position:fixed;inset:0}.media-preview-modal{background-color:var(--color-surface);border-radius:var(--radius-lg);max-width:90vw;max-height:90vh;box-shadow:var(--shadow-lg);flex-direction:column;display:flex;overflow:hidden}.media-preview-header{border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;padding:14px 20px;display:flex}.media-preview-title{color:var(--color-text-primary);white-space:nowrap;text-overflow:ellipsis;max-width:70vw;font-size:15px;font-weight:600;overflow:hidden}.media-preview-content{background-color:#000;justify-content:center;align-items:center;padding:16px;display:flex;overflow:auto}.media-preview-content img{object-fit:contain;border-radius:8px;max-width:85vw;max-height:75vh}.media-preview-content video{border-radius:8px;max-width:85vw;max-height:75vh}@media (width<=768px){.sidebar{box-shadow:var(--shadow-lg);position:absolute;top:0;bottom:0;left:0}.chat-top-bar{flex-wrap:wrap;padding:10px 14px}.trigger-name{max-width:140px}.trigger-tier{display:none}.effort-selector-wrapper{max-width:100%;overflow-x:auto}.modal-card{border-radius:20px 20px 0 0;max-height:92vh;margin-top:auto}.modal-backdrop{align-items:flex-end;padding:0}}.assistant-error-box{border-radius:var(--radius-lg);background-color:#fff8f8;border:1px solid #f0445233;flex-direction:column;gap:12px;margin-top:8px;padding:14px 16px;display:flex}.error-message-row{color:#e03131;align-items:flex-start;gap:8px;font-size:14px;font-weight:500;line-height:1.5;display:flex}.error-icon{flex-shrink:0;margin-top:2px}.error-action-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.retry-chat-btn{color:#333d4b;border:1px solid var(--color-border);border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);background-color:#fff;align-items:center;gap:6px;padding:6px 14px;font-size:13px;font-weight:600;display:inline-flex;box-shadow:0 1px 2px #0000000d}.retry-chat-btn:hover{color:#191f28;background-color:#f2f4f6;border-color:#cbd5e1}.switch-model-btn{background-color:var(--color-primary-light);color:var(--color-primary);border:1px solid var(--color-primary-border);border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);align-items:center;gap:6px;padding:6px 14px;font-size:13px;font-weight:600;display:inline-flex}.switch-model-btn:hover{background-color:#3182f629}