:root{--bg-top: #F3F5F8;--bg-bottom: #E8F1F4;--surface: #FFFFFF;--surface-muted: #DCE1E6;--assistant-bubble: #DCE1E6;--user-bubble: #BADEF5;--user-bubble-text: #12181F;--accent: #5490BB;--accent-soft: #ECF4F9;--text-title: #3A424A;--text-primary: #14181C;--text-secondary: #75808A;--text-faint: #A7B1BA;--danger: #D8635C;--online: #6FA87C;--connecting: #D9A54B;--offline: var(--danger);--radius-bubble: 18px;--radius-media: 24px;--radius-sheet-top: 28px;--radius-pill: 20px;--radius-active-pill: 17px;--radius-circle: 50%;--chat-max-width: clamp(340px, 92vw, 760px);--bubble-max-width-fraction: 78%}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100dvh;min-height:100dvh;max-height:100dvh;overflow-x:hidden;background:linear-gradient(to bottom,var(--bg-top),var(--bg-bottom));color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe 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(max-width: 899px){.app-sidebar{position:fixed;top:0;left:0;bottom:0;width:280px;max-width:85vw;z-index:1000;transform:translate(-100%);transition:transform .28s cubic-bezier(.16,1,.3,1);box-shadow:4px 0 24px #00000026;padding-top:env(safe-area-inset-top,0px);padding-left:env(safe-area-inset-left,0px);padding-bottom:env(safe-area-inset-bottom,0px)}.app-sidebar.open{transform:translate(0)}}@media (min-width: 900px){.app-layout{flex-direction:row}.app-sidebar{position:relative;width:270px;min-width:270px;max-width:270px;height:100dvh;transform:none!important;border-right:1px solid var(--surface-muted);z-index:20}.sidebar-backdrop,.sidebar-close-btn,.topbar-icon-btn{display:none!important}}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:18px 18px 14px;border-bottom:1px solid 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dashed var(--surface-muted);gap:8px}.empty-history-icon{color:var(--text-faint);margin-bottom:2px}.empty-history-title{font-size:13px;font-weight:500;color:var(--text-secondary);line-height:1.3}.empty-history-subtext{font-size:11px;color:var(--text-faint);line-height:1.35}.sidebar-nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;border:none;background:transparent;color:var(--text-primary);font-size:14px;font-weight:500;width:100%;cursor:pointer;text-align:left;transition:background .15s ease}.sidebar-nav-item.disabled{color:var(--text-faint);cursor:not-allowed;opacity:.8}.nav-item-label{flex:1}.badge-coming-soon{font-size:10px;font-weight:600;padding:2px 6px;border-radius:6px;background:var(--surface-muted);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em}.sidebar-footer{padding:14px 14px calc(14px + env(safe-area-inset-bottom,0px)) 14px;border-top:1px solid 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ease}.topbar-icon-btn:hover{background:#0000000a}.topbar-center{flex:1;text-align:center}.topbar-title{font-size:19px;font-weight:600;color:var(--text-title);margin:0;letter-spacing:-.01em}.topbar-right{width:36px;height:36px;display:flex;align-items:center;justify-content:flex-end;position:relative}.connection-avatar{width:36px;height:36px;border-radius:50%;background:var(--accent-soft);border:none;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 3px #0000000d;-webkit-user-select:none;user-select:none}.spinning-gear{animation:gearSpin 2s linear infinite;transform-origin:center center;display:block}@keyframes 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fadeInBubble{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.assistant-row{justify-content:center;align-items:center;width:100%}.assistant-bubble{max-width:min(100%,520px);width:100%;margin-inline:auto;background:var(--assistant-bubble);border-radius:var(--radius-media);padding:14px;word-break:break-word;box-shadow:0 1px 3px #00000008;box-sizing:border-box}.assistant-bubble.is-generating,.assistant-bubble:has(.generating-card){background:transparent;padding:0;box-shadow:none}.generating-card{display:flex;flex-direction:column;width:100%}.generating-card.animated-border,.animated-border{position:relative;padding:2px;border-radius:var(--radius-media);overflow:hidden;isolation:isolate;width:100%;box-sizing:border-box}.generating-card.animated-border:before,.animated-border:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:conic-gradient(from 0deg,transparent 0deg,transparent 280deg,rgba(84,144,187,.4) 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6px);overflow:hidden}.media-frame{position:relative;overflow:hidden;border-radius:var(--radius-media);background:var(--surface-muted);width:100%;isolation:isolate;contain:paint}.ratio-video{aspect-ratio:16 / 9}.ratio-image{aspect-ratio:1 / 1}.blurred-bg{position:absolute;top:-16px;right:-16px;bottom:-16px;left:-16px;width:calc(100% + 32px);height:calc(100% + 32px);object-fit:cover;filter:blur(18px);transform:translateZ(0);will-change:transform}.gradient-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,var(--accent),var(--accent-soft));display:flex;align-items:center;justify-content:center}.placeholder-icon{font-size:32px;color:#ffffff73;-webkit-user-select:none;user-select:none}.media-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#00000047}.reconnecting-pill{position:absolute;top:12px;left:50%;transform:translate(-50%);background:#000000a6;color:#fff;font-size:11px;padding:4px 12px;border-radius:12px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:10;white-space:nowrap}.center-progress{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;z-index:5;pointer-events:none}.progress-ring-container{position:relative;display:flex;align-items:center;justify-content:center;isolation:isolate}.progress-ring-svg{display:block;overflow:visible}.progress-ring-svg.indeterminate{animation:spinRing 1.2s linear infinite;transform-origin:center center}@keyframes spinRing{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.progress-ring-bar.determinate-bar{transition:stroke-dashoffset .6s ease-out}.progress-ring-label{position:absolute;color:#fff;font-size:12px;font-weight:600;text-shadow:0 1px 3px rgba(0,0,0,.8),0 0 2px rgba(0,0,0,.9);pointer-events:none;font-family:inherit;-webkit-user-select:none;user-select:none;letter-spacing:-.2px}.originating-prompt{font-size:14px;line-height:1.4;color:var(--text-primary);margin-top:2px;word-break:break-word;text-align:left;width:100%}.originating-prompt.text-muted{color:var(--text-secondary)}.result-card{display:flex;flex-direction:column;gap:8px}.video-player-container{position:relative;border-radius:var(--radius-media);overflow:hidden;cursor:pointer;aspect-ratio:16 / 9;background:#000;width:100%}.chat-result-video{width:100%;height:100%;object-fit:contain;display:block;border-radius:var(--radius-media)}.video-play-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#00000040;pointer-events:none}.play-icon-bubble{width:48px;height:48px;border-radius:50%;background:#00000073;display:flex;align-items:center;justify-content:center;padding-left:3px}.video-mute-btn{position:absolute;right:10px;bottom:10px;width:32px;height:32px;border-radius:50%;background:#0000008c;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .1s ease;z-index:10}.video-mute-btn:hover{transform:scale(1.08)}.result-image{width:100%;height:auto;border-radius:var(--radius-media);display:block}.error-card{display:flex;flex-direction:column;gap:8px}.error-text{color:var(--danger);font-size:14px;line-height:1.35;font-weight:500}.retry-pill-btn{align-self:flex-start;background:var(--surface);color:var(--text-primary);border:1px solid var(--surface-muted);padding:8px 16px;border-radius:var(--radius-pill);font-size:13px;font-weight:500;cursor:pointer;margin-top:4px;transition:background .15s ease,transform .1s ease}.retry-pill-btn:hover{background:var(--surface-muted);transform:translateY(-1px)}.composer-sheet{background:var(--surface);border-top-left-radius:var(--radius-sheet-top);border-top-right-radius:var(--radius-sheet-top);box-shadow:0 -4px 20px #0000000d;flex-shrink:0;width:100%;z-index:30}.composer-inner{width:100%;max-width:var(--chat-max-width);margin:0 auto;padding:10px 14px max(14px,env(safe-area-inset-bottom)) 14px;display:flex;flex-direction:column;gap:8px}.sheet-handle{width:36px;height:4px;border-radius:2px;background:var(--text-faint);margin:0 auto 4px}.composer-mode-row{display:flex;justify-content:flex-start}.mode-toggle-pill{width:188px;height:40px;background:var(--surface);border-radius:var(--radius-pill);padding:3px;display:flex;box-shadow:0 1px 6px #0000000d;border:1px solid rgba(0,0,0,.03)}.mode-btn{flex:1;border:none;border-radius:var(--radius-active-pill);display:flex;align-items:center;justify-content:center;gap:5px;font-size:13px;cursor:pointer;color:var(--text-secondary);background:transparent;transition:all .22s cubic-bezier(.25,1,.5,1);font-family:inherit}.mode-btn.active{background:var(--user-bubble);color:var(--text-title);font-weight:600}.mode-icon{font-size:14px}.composer-engine-row{display:flex;justify-content:flex-start;animation:expandDown .22s cubic-bezier(.25,1,.5,1)}@keyframes expandDown{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.engine-toggle-pill{width:310px;max-width:100%;height:40px;background:var(--surface);border-radius:var(--radius-pill);padding:3px;display:flex;box-shadow:0 1px 6px #0000000d;border:1px solid rgba(0,0,0,.03)}.engine-btn{flex:1;border:none;border-radius:var(--radius-active-pill);display:flex;align-items:center;justify-content:center;gap:4px;font-size:12px;cursor:pointer;color:var(--text-secondary);background:transparent;transition:all .22s cubic-bezier(.25,1,.5,1);font-family:inherit}.engine-btn.active{background:var(--user-bubble);color:var(--text-title);font-weight:600}.engine-time{font-size:10px;color:var(--text-faint)}.engine-btn.active .engine-time{color:var(--text-secondary)}.composer-hint{font-size:12px;color:var(--danger);padding:0 4px}.composer-input-row{display:flex;align-items:flex-end;gap:8px;margin-top:4px}.composer-add-btn{width:40px;height:40px;border-radius:50%;background:var(--surface-muted);border:none;color:var(--text-title);font-size:22px;font-weight:300;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:background .15s ease,transform .1s ease}.composer-add-btn:hover{transform:scale(1.04)}.composer-add-btn.has-image{color:var(--accent);background:var(--accent-soft);font-size:16px}.composer-input-box{flex:1;background:var(--surface);border-radius:24px;box-shadow:0 2px 10px #0000000d;padding:8px 16px;display:flex;flex-direction:column;gap:6px;border:1px solid rgba(0,0,0,.04)}.input-thumb-box{position:relative;width:44px;height:44px;border-radius:10px;overflow:hidden;background:var(--surface-muted);display:flex;align-items:center;justify-content:center;flex-shrink:0}.input-thumb-img{width:100%;height:100%;object-fit:cover}.thumb-spinner{width:16px;height:16px;border:2px solid rgba(84,144,187,.3);border-top-color:var(--accent);border-radius:50%;animation:spinnerRotate .8s linear infinite}.thumb-remove-btn{position:absolute;top:2px;right:2px;width:18px;height:18px;border-radius:50%;background:#14181cb3;color:#fff;border:none;font-size:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;line-height:1}.composer-textarea{width:100%;border:none;outline:none;resize:none;font-size:15px;line-height:1.4;color:var(--text-primary);font-family:inherit;background:transparent;min-height:24px;max-height:110px}.composer-textarea::placeholder{color:var(--text-secondary)}.composer-send-btn{width:40px;height:40px;border-radius:50%;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:all .15s ease}.composer-send-btn.can-submit{background:var(--accent);color:#fff}.composer-send-btn.can-submit:hover{transform:scale(1.05)}.composer-send-btn.disabled{background:var(--surface-muted);color:var(--text-faint);cursor:not-allowed}.card{background:var(--surface);border-radius:var(--radius-sheet-top);box-shadow:0 4px 20px #0000000d;padding:32px 24px;width:100%;max-width:520px;margin:auto;border:1px solid rgba(0,0,0,.04)}.login-card{text-align:center}.login-header{margin-bottom:24px}.login-avatar{width:52px;height:52px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-size:24px;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}.login-header h2{font-size:22px;color:var(--text-title);margin-bottom:6px;font-weight:600}.login-header .subtitle{font-size:14px;color:var(--text-secondary);line-height:1.4}.btn{padding:12px 20px;border-radius:12px;font-size:14px;font-weight:500;cursor:pointer;border:none;font-family:inherit;transition:all .15s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){opacity:.92;transform:translateY(-1px)}.btn-secondary{background:var(--surface-muted);color:var(--text-title)}.btn-secondary:hover:not(:disabled){background:#cbd3dc}.btn-text{background:transparent;color:var(--text-secondary)}.btn-text:hover:not(:disabled){color:var(--text-primary)}.btn-google{width:100%;background:#fff;border:1px solid var(--surface-muted);color:var(--text-primary);font-size:15px;padding:12px 16px;border-radius:14px;box-shadow:0 1px 4px #0000000d}.btn-google:hover:not(:disabled){background:#fafbfc;border-color:#cbd3dc}.btn:disabled{opacity:.55;cursor:not-allowed}.divider{display:flex;align-items:center;text-align:center;margin:20px 0;color:var(--text-faint);font-size:13px}.divider:before,.divider:after{content:"";flex:1;border-bottom:1px solid var(--surface-muted)}.divider span{padding:0 12px}.alert{padding:12px 16px;border-radius:12px;font-size:13px;line-height:1.4;margin-bottom:16px;text-align:left}.alert-error{background:#d8635c1f;color:var(--danger);border:1px solid rgba(216,99,92,.25)}.alert-warning{background:#d9a54b1f;color:#9c6c18;border:1px solid rgba(217,165,75,.25)}.gate-card{text-align:center}.gate-icon{font-size:40px;margin-bottom:12px}.gate-card h2{font-size:20px;color:var(--text-title);margin-bottom:8px}.gate-desc{font-size:14px;color:var(--text-secondary);line-height:1.45;margin-bottom:20px}.documents-list{display:flex;flex-direction:column;gap:14px;margin-bottom:20px;text-align:left}.doc-box{background:var(--bg-top);border:1px solid var(--surface-muted);border-radius:16px;padding:16px}.doc-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.doc-header h3{font-size:15px;color:var(--text-title);font-weight:600}.version-tag{background:var(--surface-muted);color:var(--text-secondary);font-size:11px;padding:2px 8px;border-radius:10px;font-weight:500}.doc-summary{font-size:13px;color:var(--text-secondary);line-height:1.45;margin-bottom:10px}.legal-points{padding-left:20px;font-size:12px;color:var(--text-primary);margin-bottom:12px;line-height:1.4}.doc-accept-row{display:flex;justify-content:space-between;align-items:center;gap:8px;padding-top:10px;border-top:1px solid rgba(0,0,0,.05)}.checkbox-label{display:flex;align-items:center;gap:8px;font-size:13px;cursor:pointer;color:var(--text-primary)}.checkbox-label input{width:18px;height:18px;accent-color:var(--accent)}.age-form{display:flex;flex-direction:column;gap:20px;text-align:left;margin-top:14px}.dob-fieldset{border:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.dob-legend{font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:2px;padding:0}.dob-inputs-group{display:flex;align-items:flex-end;gap:8px;width:100%}.dob-col{display:flex;flex-direction:column;gap:4px;flex:2;min-width:0}.dob-col.dob-col-year{flex:3}.dob-label{font-size:11px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em}.dob-separator{font-size:18px;color:var(--text-faint);padding-bottom:12px;-webkit-user-select:none;user-select:none}.dob-input{width:100%;padding:12px 10px;border-radius:12px;border:1px solid var(--surface-muted);background:var(--surface);color:var(--text-primary);font-size:16px;font-weight:500;text-align:center;outline:none;font-family:inherit;box-sizing:border-box;transition:border-color .15s ease,box-shadow .15s ease}.dob-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #5490bb26}.dob-input::placeholder{color:var(--text-faint);font-weight:400}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-size:13px;font-weight:500;color:var(--text-secondary)}.form-actions{display:flex;flex-direction:column;gap:12px}.btn-lg{width:100%;padding:14px;font-size:15px}.login-footer,.gate-footer{margin-top:20px;font-size:12px;color:var(--text-faint);line-height:1.4}.manual-token-form{display:flex;flex-direction:column;gap:8px;text-align:left;margin-top:12px}.manual-token-form input,.age-form input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--surface-muted);background:var(--surface);color:var(--text-primary);font-size:15px;outline:none;font-family:inherit;box-sizing:border-box}.manual-token-form input:focus,.age-form input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #5490bb26}.form-buttons{display:flex;gap:8px}@media (max-width: 480px){.chat-column{padding:8px 10px 12px}.composer-inner{padding:8px 10px max(12px,env(safe-area-inset-bottom)) 10px}.card{padding:24px 16px;border-radius:20px}.engine-toggle-pill{width:100%}}@media (min-width: 481px) and (max-width: 820px){.chat-column{padding:12px 16px}}@media (min-width: 821px){.chat-column{padding:16px 20px}}