:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-surface: #21262d;--bg-hover: #30363d;--text-primary: #c9d1d9;--text-secondary: #8b949e;--text-muted: #484f58;--accent: #58a6ff;--accent-dim: rgba(88, 166, 255, .12);--success: #3fb950;--warning: #d29922;--error: #f85149;--border: #21262d;--border-subtle: #30363d;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--shadow: 0 1px 4px rgba(0, 0, 0, .3);--transition: .15s ease;--font: -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "SF Pro Text", system-ui, sans-serif;--font-mono: "Cascadia Code", "Fira Code", "Consolas", "SF Mono", monospace;--sidebar-width: 248px}.nav-icon{width:18px;height:18px;filter:brightness(0) invert(1)}.file-icon{width:22px;height:22px;filter:brightness(0) invert(1)}[data-theme=light] .nav-icon,[data-theme=light] .file-icon{filter:invert(23%) sepia(91%) saturate(2467%) hue-rotate(217deg) brightness(92%) contrast(94%)}[data-theme=light]{--bg-primary: #fafafa;--bg-secondary: #ffffff;--bg-surface: #f1f5f9;--bg-hover: #e2e8f0;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--accent: #2563eb;--accent-dim: rgba(37, 99, 235, .12);--success: #16a34a;--warning: #d97706;--error: #dc2626;--border: #e2e8f0;--border-subtle: #cbd5e1}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-subtle);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes dotPulse{0%,80%,to{opacity:.3}40%{opacity:1}}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg-primary)}.login-card{width:100%;max-width:380px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;box-shadow:var(--shadow)}.login-card h1{font-size:1.125rem;font-weight:600;color:var(--text-primary);margin-bottom:4px}.login-card .subtitle{font-size:13px;color:var(--text-secondary);margin-bottom:24px}.login-card .divider{display:flex;align-items:center;gap:10px;margin:20px 0;color:var(--text-muted);font-size:12px}.login-card .divider:before,.login-card .divider:after{content:"";flex:1;height:1px;background:var(--border)}.form-group{margin-bottom:14px}.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-input{width:100%;padding:8px 12px;background:var(--bg-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font);font-size:14px;outline:none;transition:border-color var(--transition)}.form-input:focus{border-color:var(--accent)}.form-input::placeholder{color:var(--text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;border:1px solid transparent;border-radius:var(--radius-md);font-family:var(--font);font-size:13px;font-weight:500;cursor:pointer;transition:background var(--transition),border-color var(--transition),color var(--transition);outline:none;width:100%;white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#0d1117;border-color:var(--accent)}.btn-primary:hover:not(:disabled){background:#79c0ff;border-color:#79c0ff}.btn-secondary{background:var(--bg-surface);color:var(--text-primary);border-color:var(--border-subtle)}.btn-secondary:hover:not(:disabled){background:var(--bg-hover);border-color:var(--text-muted)}.alert{padding:8px 12px;border-radius:var(--radius-md);font-size:13px;margin-bottom:14px;border:1px solid transparent}.alert-error{background:#f851491a;border-color:#f8514933;color:var(--error)}.alert-success{background:#3fb9501a;border-color:#3fb95033;color:var(--success)}.chat-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);height:100vh;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column}.mobile-menu-btn,.sidebar-close-btn,.sidebar-backdrop{display:none}.sidebar-header{padding:16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:8px}.sidebar-brand{font-size:14px;font-weight:600;color:var(--text-primary)}.sidebar-user{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary)}.sidebar-user .status-dot{width:6px;height:6px;border-radius:50%;background:var(--success);flex-shrink:0}.sidebar-section{padding:12px 16px 8px}.sidebar-section-label{font-size:12px;font-weight:500;color:var(--text-muted);margin-bottom:8px}.btn-new-chat{justify-content:center}.conversation-list{max-height:220px;overflow-y:auto;padding:0 16px 8px;border-bottom:1px solid var(--border)}.conversation-item{width:100%;border:1px solid var(--border-subtle);background:var(--bg-primary);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px;margin-bottom:6px;cursor:pointer;color:var(--text-primary)}.conversation-item:hover{background:var(--bg-surface)}.conversation-item.active{border-color:var(--accent);background:var(--accent-dim)}.conversation-item-main{min-width:0;text-align:left}.conversation-item-title{display:block;font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conversation-item-time{display:block;font-size:11px;color:var(--text-muted)}.conversation-item-delete{color:var(--text-muted);padding:2px 4px;border-radius:var(--radius-sm)}.conversation-item-delete:hover{color:var(--error);background:#f851491f}.upload-area{border:1px dashed var(--border-subtle);border-radius:var(--radius-md);padding:16px;text-align:center;cursor:pointer;position:relative;overflow:hidden;transition:border-color var(--transition),background var(--transition)}.upload-area:hover{border-color:var(--accent);background:var(--accent-dim)}.upload-area input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}.upload-area .upload-icon{font-size:18px;margin-bottom:4px;color:var(--text-secondary)}.upload-area .upload-text{font-size:13px;color:var(--text-secondary)}.upload-area .upload-hint{font-size:12px;color:var(--text-muted);margin-top:2px}.file-list{flex:1;overflow-y:auto;padding:0 16px 12px}.file-item{display:flex;align-items:center;justify-content:space-between;padding:6px 8px;border-radius:var(--radius-sm);margin-bottom:4px;transition:background var(--transition)}.file-item:hover{background:var(--bg-surface)}.file-item-name{font-size:13px;color:var(--text-primary);display:flex;align-items:center;gap:6px;overflow:hidden}.file-item-name span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-item-name .file-icon{color:var(--text-muted);flex-shrink:0;font-size:13px}.file-item-delete{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:2px 4px;border-radius:var(--radius-sm);font-size:12px;transition:color var(--transition),background var(--transition);flex-shrink:0}.file-item-delete:hover{color:var(--error);background:#f851491a}.sidebar-footer{padding:12px 16px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:6px}.sidebar-footer .btn{font-size:13px;padding:7px 12px;justify-content:flex-start}.chat-area{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg-primary)}.chat-header{padding:12px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px;background:var(--bg-secondary)}.chat-header-mark{width:32px;height:32px;border-radius:var(--radius-sm);background:var(--bg-surface);border:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0}.chat-header-info h3{font-size:14px;font-weight:600;color:var(--text-primary)}.chat-header-info p{font-size:12px;color:var(--text-secondary)}.messages-container{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px}.message{display:flex;gap:10px;max-width:82%;animation:fadeIn .15s ease}.message-user{align-self:flex-end;flex-direction:row-reverse}.message-avatar{width:28px;height:28px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0;border:1px solid var(--border)}.message-user .message-avatar{background:var(--accent);color:#fff;border-color:var(--accent);font-size:11px}.message-assistant .message-avatar{background:var(--bg-surface);color:var(--text-secondary)}.message-tool .message-avatar{background:var(--bg-surface);color:var(--warning);border-color:#d2992233}.message-bubble{padding:10px 14px;border-radius:var(--radius-lg);font-size:14px;line-height:1.6;word-break:break-word;border:1px solid var(--border)}.message-user .message-bubble{background:var(--accent-dim);border-color:#58a6ff33;color:var(--text-primary);border-bottom-right-radius:var(--radius-sm)}.message-assistant .message-bubble{background:var(--bg-secondary);border-color:var(--border);border-bottom-left-radius:var(--radius-sm)}.message-tool .message-bubble{background:var(--bg-secondary);border-color:#d2992226;border-bottom-left-radius:var(--radius-sm);font-size:13px;color:var(--text-secondary)}.message-bubble h1,.message-bubble h2,.message-bubble h3{margin-top:12px;margin-bottom:4px;font-weight:600}.message-bubble h1{font-size:1.05rem}.message-bubble h2{font-size:.95rem}.message-bubble h3{font-size:.9rem}.message-bubble p{margin-bottom:6px}.message-bubble p:last-child{margin-bottom:0}.message-bubble ul,.message-bubble ol{padding-left:18px;margin-bottom:6px}.message-bubble code{background:var(--bg-surface);border:1px solid var(--border-subtle);padding:1px 5px;border-radius:var(--radius-sm);font-size:12px;font-family:var(--font-mono)}.message-bubble pre{background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-md);padding:12px;overflow-x:auto;margin:8px 0}.message-bubble pre code{background:none;border:none;padding:0;font-size:12px}.message-bubble strong{font-weight:600;color:var(--text-primary)}.message-bubble table{width:100%;border-collapse:collapse;margin:8px 0;font-size:13px}.message-bubble thead th{background:var(--bg-surface);color:var(--text-secondary);font-weight:600;text-align:left;padding:8px 10px;border-bottom:1px solid var(--border-subtle)}.message-bubble tbody td{padding:7px 10px;border-bottom:1px solid var(--border)}.message-bubble tbody tr:hover{background:var(--bg-surface)}.markdown-image-wrapper{position:relative;display:inline-block;max-width:100%}.message-image{max-width:100%;border-radius:var(--radius-md);border:1px solid var(--border);margin:8px 0;cursor:pointer;display:block}.download-btn{display:inline-flex;align-items:center;justify-content:center;position:absolute;top:14px;right:8px;width:28px;height:28px;padding:0;background:#0d1117b8;border:1px solid var(--border-subtle);border-radius:999px;cursor:pointer;text-decoration:none;opacity:.95;transition:background var(--transition),opacity var(--transition),transform var(--transition)}.download-btn:hover{background:#0d1117e6;opacity:1;transform:translateY(-1px)}.download-icon,.copy-icon{width:14px;height:14px;filter:brightness(0) invert(1)}.message-actions{display:flex;justify-content:flex-end;margin-top:8px}.message-attachments{display:flex;flex-direction:column;gap:8px;margin-top:10px}.message-attachment-card{width:100%;display:flex;align-items:center;gap:10px;padding:9px 10px;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;color:var(--text-primary);transition:background var(--transition),border-color var(--transition)}.message-attachment-card:hover{background:var(--bg-hover);border-color:var(--border)}.message-attachment-icon{width:18px;height:18px;flex-shrink:0}.message-attachment-meta{display:flex;flex-direction:column;min-width:0;flex:1;text-align:left}.message-attachment-name{font-size:12px;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-attachment-type{font-size:11px;color:var(--text-muted);margin-top:1px}.message-attachment-download{width:13px;height:13px;opacity:.85}.copy-btn{display:inline-flex;align-items:center;gap:5px;padding:4px 8px;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-secondary);font-size:11px;font-family:var(--font);cursor:pointer;transition:background var(--transition),color var(--transition)}.copy-btn:hover{background:var(--bg-hover);color:var(--text-primary)}[data-theme=light] .download-icon{filter:invert(23%) sepia(91%) saturate(2467%) hue-rotate(217deg) brightness(92%) contrast(94%)}[data-theme=light] .download-btn{background:#ffffffe0;border-color:var(--border-subtle)}[data-theme=light] .download-btn:hover{background:#fff}[data-theme=light] .copy-icon{filter:invert(23%) sepia(91%) saturate(2467%) hue-rotate(217deg) brightness(92%) contrast(94%)}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.blink-cursor{display:inline-block;width:2px;height:14px;background:var(--text-secondary);margin-left:2px;vertical-align:middle;animation:blink 1s step-start infinite}.streaming-bubble{white-space:pre-wrap}.ai-thinking-indicator{display:flex;align-items:center;gap:10px;padding:12px 16px!important}.thinking-dots-animated{display:flex;align-items:center;gap:4px}.thinking-dots-animated span{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:thinkingBounce 1.4s ease-in-out infinite}.thinking-dots-animated span:nth-child(2){animation-delay:.2s}.thinking-dots-animated span:nth-child(3){animation-delay:.4s}@keyframes thinkingBounce{0%,80%,to{transform:scale(.6);opacity:.4}40%{transform:scale(1);opacity:1}}.thinking-label{font-size:13px;color:var(--text-secondary);font-style:italic}.chat-input-area{padding:12px 20px 16px;border-top:1px solid var(--border);background:var(--bg-secondary)}.chat-input-wrapper{display:flex;gap:8px;align-items:flex-end}.chat-input{flex:1;padding:10px 14px;background:var(--bg-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font);font-size:14px;outline:none;resize:none;min-height:42px;max-height:120px;transition:border-color var(--transition)}.chat-input:focus{border-color:var(--accent)}.chat-input::placeholder{color:var(--text-muted)}.send-btn{width:42px;height:42px;border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:var(--bg-surface);color:var(--text-secondary);font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--transition),color var(--transition),border-color var(--transition);flex-shrink:0}.send-btn:hover:not(:disabled){background:var(--bg-hover);color:var(--text-primary);border-color:var(--text-muted)}.send-btn:disabled{opacity:.35;cursor:not-allowed}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;gap:8px;color:var(--text-muted);padding:40px 20px}.empty-state .empty-icon{font-size:24px;opacity:.5}.empty-state p{font-size:13px;max-width:340px;text-align:center;line-height:1.6;color:var(--text-muted)}.loading-overlay{display:flex;align-items:center;justify-content:center;gap:8px;padding:12px;color:var(--text-muted);font-size:13px}.loading-spinner{width:14px;height:14px;border:2px solid var(--border-subtle);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.sidebar-nav{padding:8px 0;border-bottom:1px solid var(--border)}.nav-link{display:flex;align-items:center;gap:9px;width:100%;padding:7px 16px;background:none;border:none;color:var(--text-secondary);font-family:var(--font);font-size:13px;text-align:left;cursor:pointer;transition:color var(--transition),background var(--transition);border-left:2px solid transparent}.nav-link:hover{color:var(--text-primary);background:var(--bg-surface)}.nav-link.active{color:var(--text-primary);border-left-color:var(--accent);background:var(--bg-surface);font-weight:500}.nav-icon{width:18px;height:18px}.file-list-empty{font-size:12px;color:var(--text-muted);padding:2px 0}.sidebar-notice{margin:0 16px 8px;padding:6px 10px;border-radius:var(--radius-md);font-size:12px;border:1px solid transparent}.sidebar-notice.success{background:#3fb9501a;border-color:#3fb95033;color:var(--success)}.sidebar-notice.error{background:#f851491a;border-color:#f8514933;color:var(--error)}.attach-wrap{position:relative;flex-shrink:0}.attach-btn{width:42px;height:42px;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-secondary);font-size:20px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--transition),color var(--transition);flex-shrink:0}.attach-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.file-picker-popover{position:absolute;bottom:calc(100% + 6px);left:0;width:240px;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow);z-index:100;overflow:hidden}.file-picker-header{padding:8px 12px;font-size:12px;font-weight:500;color:var(--text-muted);border-bottom:1px solid var(--border)}.file-picker-empty{padding:12px;font-size:12px;color:var(--text-muted)}.file-picker-item{display:flex;align-items:center;gap:8px;width:100%;padding:8px 12px;background:none;border:none;color:var(--text-primary);font-family:var(--font);font-size:13px;text-align:left;cursor:pointer;transition:background var(--transition)}.file-picker-item:hover{background:var(--bg-surface)}.file-picker-item.selected{background:var(--accent-dim)}.file-picker-icon{font-size:14px}.file-picker-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-picker-check{color:var(--accent);font-size:12px;flex-shrink:0}.file-picker-upload{display:block;padding:8px 12px;font-size:12px;color:var(--accent);cursor:pointer;border-top:1px solid var(--border);transition:background var(--transition)}.file-picker-upload:hover{background:var(--bg-surface)}.attachment-chip{display:inline-flex;align-items:center;gap:5px;padding:3px 8px 3px 6px;background:var(--accent-dim);border:1px solid 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var(--border);display:flex;align-items:center;justify-content:space-between;gap:8px;flex-shrink:0}.audio-transcript-body{flex:1;overflow-y:auto;padding:16px}.transcript-text{font-family:var(--font);font-size:13px;line-height:1.7;color:var(--text-secondary);white-space:pre-wrap;word-break:break-word}.audio-chat{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg-primary)}.audio-info-body{flex:1;overflow-y:auto;padding:16px}.audio-player-stub{padding:12px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:16px;text-align:center}.audio-player-icon{font-size:24px;margin-bottom:4px}.audio-player-name{font-size:12px;color:var(--text-secondary);word-break:break-all;margin-bottom:4px}.audio-meta-list{display:flex;flex-direction:column;gap:1px}.audio-meta-row{display:flex;justify-content:space-between;align-items:center;padding:7px 0;border-bottom:1px solid var(--border);gap:8px}.audio-meta-row:last-child{border-bottom:none}.audio-meta-key{font-size:12px;color:var(--text-muted);flex-shrink:0}.audio-meta-val{font-size:12px;color:var(--text-primary);text-align:right}.audio-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:24px;color:var(--text-muted);font-size:13px;text-align:center;gap:6px}.modal-overlay{position:fixed;inset:0;background:#000000bf;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .1s ease;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.modal-content{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:500px;max-height:80vh;display:flex;flex-direction:column;box-shadow:0 20px 40px #0006}.audio-history-modal .modal-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.audio-history-modal .modal-header h3{font-size:16px;font-weight:600}.close-btn{background:none;border:none;font-size:24px;color:var(--text-secondary);cursor:pointer;padding:4px;line-height:1}.audio-history-modal .modal-body{flex:1;overflow-y:auto;padding:12px}.history-list{display:flex;flex-direction:column;gap:8px}.history-item{display:flex;align-items:center;gap:12px;padding:12px;background:var(--bg-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);width:100%;text-align:left}.history-item:hover{border-color:var(--accent);background:var(--bg-hover);transform:translateY(-1px)}.history-item-icon{font-size:20px;opacity:.8}.history-item-info{flex:1;min-width:0}.history-item-filename{font-size:14px;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.history-item-date{font-size:12px;color:var(--text-muted)}.history-item-duration{font-size:12px;color:var(--text-secondary);font-variant-numeric:tabular-nums}.loading-state,.empty-history{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px;color:var(--text-muted);gap:12px}.files-page{flex:1;display:flex;flex-direction:column;min-width:0;overflow:hidden;background:var(--bg-primary)}.files-topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;border-bottom:1px solid var(--border);background:var(--bg-secondary);flex-shrink:0}.files-topbar-left{display:flex;align-items:center;gap:10px}.files-title{font-size:14px;font-weight:600;color:var(--text-primary)}.files-count{font-size:12px;color:var(--text-muted)}.storage-bar-wrap{padding:12px 24px;border-bottom:1px solid var(--border);background:var(--bg-secondary);flex-shrink:0}.storage-bar-track{height:4px;background:var(--bg-surface);border-radius:2px;overflow:hidden;margin-bottom:6px}.storage-bar-fill{height:100%;background:var(--accent);border-radius:2px;transition:width .4s ease}.storage-bar-label{display:flex;justify-content:space-between;font-size:12px;color:var(--text-muted)}.storage-plan-badge{font-size:11px;padding:1px 6px;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-muted)}.file-grid{flex:1;overflow-y:auto;padding:20px 24px;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px;align-content:start}.file-card{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);transition:border-color var(--transition);min-width:0}.file-card:hover{border-color:var(--border-subtle)}.file-card-icon{flex-shrink:0}.file-card-info{flex:1;min-width:0}.file-card-name{font-size:13px;font-weight:500;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-bottom:4px}.file-card-meta{display:flex;align-items:center;gap:8px;min-width:0}.type-badge{font-size:10px;font-weight:600;padding:1px 5px;border:1px solid;border-radius:var(--radius-sm);letter-spacing:.03em}.file-card-size{font-size:12px;color:var(--text-muted)}.file-card-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}.file-card-actions .btn{width:auto;min-width:0}.modal-backdrop{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:200}.modal{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);width:90%;max-width:820px;max-height:80vh;display:flex;flex-direction:column;box-shadow:0 4px 24px #00000080}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border);font-size:13px;font-weight:500;color:var(--text-primary);flex-shrink:0}.modal-close{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:14px;padding:2px 6px;border-radius:var(--radius-sm);transition:color var(--transition),background var(--transition)}.modal-close:hover{color:var(--text-primary);background:var(--bg-surface)}.modal-body{flex:1;overflow:auto;padding:16px}.modal-footer-note{font-size:12px;color:var(--text-muted);margin-top:10px}.modal-pdf-body{display:flex;align-items:center;justify-content:center}.pdf-stub{text-align:center;color:var(--text-muted);font-size:13px;display:flex;flex-direction:column;align-items:center;gap:8px}.preview-table{width:100%;border-collapse:collapse;font-size:13px}.preview-table th{background:var(--bg-surface);color:var(--text-secondary);font-weight:600;text-align:left;padding:8px 10px;border-bottom:1px solid var(--border-subtle)}.preview-table td{padding:7px 10px;border-bottom:1px solid var(--border);color:var(--text-primary)}.preview-table tr:hover td{background:var(--bg-surface)}.settings-page{flex:1;display:flex;flex-direction:column;min-width:0;overflow:hidden;background:var(--bg-primary)}.settings-header{padding:14px 24px;border-bottom:1px solid var(--border);background:var(--bg-secondary);flex-shrink:0}.settings-page-title{font-size:14px;font-weight:600;color:var(--text-primary)}.settings-content{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:0;max-width:600px}.settings-section{border-bottom:1px solid var(--border);padding-bottom:24px;margin-bottom:24px}.settings-section:last-of-type{border-bottom:none}.settings-section-title{font-size:13px;font-weight:600;color:var(--text-primary);margin-bottom:16px}.settings-section-body{display:flex;flex-direction:column;gap:16px}.settings-field{display:flex;flex-direction:column;gap:4px}.settings-label{font-size:13px;font-weight:500;color:var(--text-secondary)}.settings-hint{font-size:12px;color:var(--text-muted)}.settings-control .form-input{max-width:320px}.settings-toggle-row{display:flex;align-items:center;gap:12px}.settings-toggle-label{font-size:13px;color:var(--text-secondary)}.settings-toggle{width:36px;height:20px;border-radius:10px;background:var(--bg-surface);border:1px solid var(--border-subtle);position:relative;cursor:default;opacity:.6}.settings-toggle.active{background:var(--accent);border-color:var(--accent);opacity:1}.settings-toggle:after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:#fff;transition:left var(--transition)}.settings-toggle.active:after{left:18px}.subscription-block{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md)}.subscription-info{display:flex;align-items:center;gap:10px}.plan-badge{font-size:11px;font-weight:600;padding:2px 8px;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-secondary)}.subscription-details{font-size:12px;color:var(--text-muted)}.usage-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid var(--border);font-size:13px}.usage-row:last-of-type{border-bottom:none}.usage-label{color:var(--text-secondary)}.usage-value{color:var(--text-primary);font-weight:500}.settings-save-row{display:flex;align-items:center;justify-content:flex-end;gap:12px;padding-top:8px}.settings-saved-msg{font-size:13px;color:var(--success)}@media(max-width:1024px){.files-topbar,.storage-bar-wrap,.settings-header,.settings-content,.messages-container,.chat-input-area{padding-left:16px;padding-right:16px}.file-grid{padding:16px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.audio-page{display:grid;grid-template-columns:1fr;grid-template-rows:minmax(220px,34vh) minmax(280px,1fr) minmax(180px,26vh);height:100vh}.audio-panel,.audio-transcript-panel,.audio-info-panel{width:100%;min-width:0;border-left:none;border-right:none;border-top:1px solid var(--border)}.audio-chat{min-height:0}}@media(max-width:768px){html,body,#root{height:100dvh}.chat-layout{height:100dvh;position:relative}.mobile-menu-btn{display:inline-flex;position:fixed;top:max(10px,env(safe-area-inset-top));left:max(10px,env(safe-area-inset-left));width:36px;height:36px;border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:var(--bg-secondary);color:var(--text-primary);font-size:16px;align-items:center;justify-content:center;z-index:500;cursor:pointer}.sidebar-backdrop{display:block;position:fixed;inset:0;background:#00000073;border:none;z-index:450}.sidebar{position:fixed;top:0;left:0;bottom:0;width:min(84vw,300px);min-width:0;transform:translate(-102%);transition:transform .18s ease;z-index:550;box-shadow:0 18px 40px #00000059}.sidebar.open{transform:translate(0)}.sidebar-close-btn{display:inline-flex;margin-left:auto;width:28px;height:28px;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);background:var(--bg-surface);color:var(--text-primary);align-items:center;justify-content:center;cursor:pointer}.chat-header,.files-topbar,.settings-header{padding-left:56px}.chat-header-info p{display:none}.messages-container{padding:12px;gap:10px}.message{max-width:94%}.chat-input-area{padding:10px 12px calc(12px + env(safe-area-inset-bottom))}.chat-input-wrapper{gap:6px}.attach-btn,.send-btn,.chat-input{min-height:40px}.file-picker-popover{width:min(88vw,280px);left:0}.files-topbar{flex-wrap:wrap;gap:8px;align-items:flex-start}.storage-bar-label{gap:8px;flex-wrap:wrap}.file-grid{grid-template-columns:1fr;gap:10px;padding:12px}.file-card{flex-wrap:wrap;align-items:flex-start;padding:10px 12px;gap:10px}.file-card-info{min-width:0;flex:1 1 160px}.file-card-name{white-space:normal;word-break:break-word;line-height:1.35}.file-card-meta{flex-wrap:wrap;row-gap:4px}.file-card-actions{width:100%;justify-content:flex-end;flex-wrap:wrap;gap:4px}.file-card-actions .btn{font-size:12px;padding:6px 10px}.audio-page{grid-template-rows:minmax(170px,32vh) minmax(250px,1fr) minmax(150px,24vh)}.audio-panel-header,.audio-transcript-body,.audio-info-body{padding-left:12px;padding-right:12px}.settings-content{max-width:none;padding:16px}}