:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#171717;background:white;font-synthesis:none}*{box-sizing:border-box}html,body{height:100%;margin:0}body{overflow:hidden}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{cursor:wait}button:focus-visible,[tabindex]:focus-visible,a:focus-visible{outline:2px solid #777;outline-offset:3px}[hidden]{display:none!important}button{color:inherit}#app{height:100dvh;display:flex}[data-ui="workspace"]{display:flex;flex:1;min-width:0;min-height:0}.chat-pane{display:flex;flex-direction:column;min-width:0;min-height:0;flex:1;position:relative}.chat-header{height:64px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 26px;gap:10px}.chat-header>span{font-size:17px;font-weight:600;color:#424242}.chat-header small{font-size:11px;font-weight:400;display:block;margin-top:4px;color:#8b8b8b}.chat-header button{border:1px solid #e4e4e4;background:white;border-radius:16px;font-size:11px;padding:7px 10px;white-space:nowrap}[data-ui="chat-scroll"]{overflow-y:auto;overscroll-behavior:contain;flex:1;min-height:80px;scrollbar-width:thin;scroll-behavior:auto;overflow-anchor:none}[data-ui="messages"]{max-width:760px;margin:auto;padding:30px 28px 32px;display:flex;flex-direction:column;gap:28px}.message{font-size:15px;line-height:1.75;overflow-wrap:anywhere;min-width:0}.message p{margin:0 0 12px}.message p:last-child{margin:0}.message.user{max-width:85%;align-self:flex-end;background:#f4f4f4;border-radius:22px;padding:11px 18px}.message.assistant{width:100%}.message h2{font-size:27px;font-weight:600;letter-spacing:-.03em;line-height:1.25;margin:28px 0 18px}.thinking{display:flex;gap:5px;align-items:center;color:#888;font-size:13px}.thinking i{width:5px;height:5px;display:block;background:#777;border-radius:50%;animation:breathe 1.2s infinite}.thinking i:nth-child(2){animation-delay:.2s}.thinking i:nth-child(3){animation-delay:.4s}.typing::after{content:'●';font-size:9px;vertical-align:middle;margin-left:3px}.composer-area{flex-shrink:0;padding:12px 24px 10px;width:min(100%,810px);margin:0 auto;background:white}.choice-heading{font-size:11px;color:#777;display:flex;justify-content:space-between;gap:10px;margin:0 9px 8px}.choice-heading span:last-child{white-space:nowrap}.choice-strip{display:flex;align-items:center;gap:5px}.strip-arrow{border:0;background:transparent;font-size:24px;width:17px;flex-shrink:0;padding:0;color:#777}.strip-arrow:disabled{opacity:.2;cursor:default}[data-ui="choices"]{display:grid;grid-auto-flow:column;grid-template-rows:repeat(2,minmax(34px,auto));grid-auto-columns:max-content;gap:6px;max-height:92px;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;scroll-snap-type:x proximity;flex:1;padding:2px 1px 7px}[data-ui="choices"].single-row{grid-template-rows:minmax(34px,auto)}.choice{white-space:nowrap;border:1px solid #e2e2e2;background:white;padding:8px 13px;border-radius:18px;font-size:12px;line-height:1.35;scroll-snap-align:start;max-width:min(480px,85vw);overflow:hidden;text-overflow:ellipsis;text-align:left}.choice:hover{background:#f7f7f7;border-color:#bbb}.choice.primary{background:#202020;color:white;border-color:#202020}.busy-note{font-size:12px;color:#999;padding:9px 4px;white-space:nowrap}[data-ui="side-choices"]{display:flex;flex-wrap:nowrap;gap:14px;overflow-x:auto;scrollbar-width:none;min-height:28px;padding:2px 23px 5px}[data-ui="side-choices"] button{border:0;background:none;color:#777;font-size:10px;padding:3px 0;white-space:nowrap;text-decoration:underline;text-underline-offset:3px;text-decoration-color:#bbb}.composer{margin-top:2px;background:#f4f4f4;border:1px solid #eee;border-radius:26px;min-height:58px;display:flex;align-items:center;padding:13px 14px;gap:12px;color:#909090}.composer>span:first-child{font-size:25px;color:#777}.composer [role=textbox]{flex:1;font-size:13px;cursor:default}.send-icon{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#dedede;color:#f9f9f9;font-size:23px}.footnote{text-align:center;font-size:9px;color:#929292;margin:9px 0 0}[data-ui="jump-bottom"]{position:absolute;bottom:210px;left:50%;transform:translateX(-50%);width:30px;height:30px;border-radius:50%;border:1px solid #ddd;background:#fff;box-shadow:0 2px 6px #0000000c;z-index:2}.summary{border-left:2px solid #ddd;padding:1px 0 1px 17px;margin:16px 0}.summary div{margin:9px 0}.summary span{display:block;color:#888;font-size:11px}.summary strong{display:block;font-size:14px;font-weight:500}.generation-card{margin-top:15px;border:1px solid #e6e6e6;border-radius:12px;padding:17px}.generation-card>div:first-child{font-size:12px;display:flex;justify-content:space-between;gap:16px;color:#777}.generation-card .load-meter{width:100%;margin-top:13px}.artifact{display:flex;gap:13px;align-items:center;text-align:left;border:1px solid #dedede;border-radius:14px;background:white;width:min(440px,100%);padding:15px;margin-top:15px}.artifact:hover{background:#fafafa}.artifact-icon{height:38px;width:32px;border:1px solid #ccc;border-radius:4px;display:grid;place-items:center;font-size:17px;color:#666;flex-shrink:0}.artifact-copy{flex:1}.artifact-copy strong{display:block;font-size:13px;font-weight:600;line-height:1.4}.artifact-copy small{font-size:10px;color:#999;display:block;margin-top:5px}.artifact>span:last-child{font-size:17px;color:#888}.mail-card{margin-top:15px;background:#fafafa;border:1px solid #e6e6e6;border-radius:14px;padding:17px}.mail-card pre{white-space:pre-wrap;overflow-wrap:anywhere;font-family:inherit;font-size:12px;line-height:1.7;color:#555}.mail-card a{display:inline-block;background:#222;color:white;border-radius:16px;padding:8px 13px;font-size:12px;text-decoration:none}.mail-card small{font-size:10px;color:#777;display:block;margin-top:8px}[data-ui="workspace"].has-preview .chat-pane{flex:0 0 33.333%;min-width:310px}[data-ui="workspace"].has-preview [data-ui="messages"]{padding:24px 22px}[data-ui="workspace"].has-preview .composer-area{padding:11px 15px 9px}[data-ui="workspace"].has-preview .message{font-size:14px}[data-ui="workspace"].has-preview .chat-header{padding:0 20px}[data-ui="preview-pane"]{flex:1;min-width:0;min-height:0;border-left:1px solid #ddd;display:flex;flex-direction:column;background:#f8f8f8}.preview-header{height:49px;display:flex;align-items:center;border-bottom:1px solid #e2e2e2;padding:0 8px;gap:4px;flex-shrink:0}[data-ui="preview-tabs"]{display:flex;overflow-x:auto;gap:4px;align-items:end;min-width:0;flex:1;scrollbar-width:none;height:100%;padding-top:9px}.preview-tab{display:flex;align-items:center;min-width:110px;max-width:240px;border-radius:9px 9px 0 0;background:transparent;border:1px solid transparent;border-bottom:0;height:39px;padding:0 4px 0 12px;gap:7px}.preview-tab.active{background:white;border-color:#ddd}.preview-tab button{border:0;background:none;padding:6px 3px}.preview-tab button[role=tab]{min-width:0;text-overflow:ellipsis;overflow:hidden;white-space:nowrap;font-size:11px;text-align:left}.tab-close{font-size:17px;color:#888!important}[data-ui="preview-close"],[data-ui="preview-wide"]{border:0;background:transparent;font-size:24px;width:30px;height:32px;color:#777}.preview-context{height:35px;display:flex;align-items:center;justify-content:space-between;gap:15px;flex-shrink:0;background:white;font-size:10px;color:#888;border-bottom:1px solid #eee;padding:0 16px}.preview-context>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.preview-context button{font-size:10px;border:0;background:none;white-space:nowrap;padding:0;text-decoration:underline;text-underline-offset:3px}[data-ui="preview-stage"]{flex:1;min-height:0;position:relative;background:white}.result-frame{border:0;width:100%;height:100%;display:block;background:white}.frame-loading{position:absolute;inset:0;background:#fafafa;display:grid;place-items:center;font-size:13px;color:#999}.wide-preview .chat-pane{display:none!important}.wide-preview [data-ui="preview-pane"]{border-left:0}#intro{position:fixed;inset:0;background:white;z-index:100;display:grid;place-items:center;padding:26px}.intro-content{width:min(520px,100%);text-align:center}.intro-content h1{font-size:clamp(27px,4vw,43px);letter-spacing:-.04em;font-weight:550;line-height:1.15;margin:0 0 22px}.intro-content>p{font-size:14px;line-height:1.8;color:#888;margin:0 auto;max-width:460px}.intro-brand{display:flex;flex-direction:column;align-items:center;gap:10px;margin:32px 0;filter:grayscale(1);opacity:.4;animation:breathe 3s infinite}.intro-brand strong{font-size:16px;letter-spacing:.02em}.intro-content #intro-tip{font-size:12px;min-height:44px;max-width:410px}.load-meta{display:flex;justify-content:space-between;font-size:10px;color:#999;gap:14px;margin:25px auto 11px;width:min(420px,100%)}.load-meter{height:2px;background:#eee;width:min(420px,100%);margin:auto;overflow:hidden}.load-meter>i{display:block;height:100%;background:#858585;width:0;transition:width .13s ease-out}#intro.leaving{opacity:0;transition:opacity .4s}[data-ui="toast"]{position:fixed;z-index:200;bottom:20px;left:50%;transform:translateX(-50%);background:#222;color:white;padding:11px 18px;border-radius:10px;font-size:12px;max-width:90vw}.noscript{position:fixed;inset:0;z-index:300;background:white;display:grid;place-items:center;padding:30px}@keyframes breathe{50%{opacity:.3}0%,100%{opacity:.65}}@media(max-width:850px){.chat-header{padding:0 18px;height:59px}.chat-header>span{font-size:15px}[data-ui="messages"]{padding:25px 23px}.composer-area{padding:10px 12px}[data-ui="workspace"].has-preview .chat-pane{display:none}[data-ui="workspace"].has-preview [data-ui="preview-pane"]{position:fixed;inset:0;z-index:20;border-left:0}[data-ui="preview-wide"]{display:none}.preview-context{padding:0 12px;font-size:9px}.preview-context button{font-size:9px}.message h2{font-size:26px}.choice{font-size:11px}.composer [role=textbox]{font-size:12px}[data-ui="side-choices"]{padding-inline:22px}.preview-tab{max-width:215px}.intro-content>p{font-size:13px}.intro-brand{margin:26px 0}.footnote{font-size:8px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important;transition:none!important}}

[data-ui="side-choices"]:empty{display:none}.choice.secondary{color:#666;border-style:dashed}

/* Voluntary single-field personalization. The regular chat remains guided. */
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.composer input{flex:1;width:0;min-width:0;border:0;outline:0;background:transparent;color:#173e32;font-size:15px;line-height:1.5;padding:0;border-radius:0}.composer input::placeholder{color:#5c8a74;font-size:13px}.composer.unlocked{border-color:#58a582;background:#f0faf4;box-shadow:0 0 0 3px #4ca37c12}.composer.unlocked>span:first-child{color:#3a8a66}.composer.unlocked .send-icon{background:#287956;color:white;border:0;flex-shrink:0;cursor:pointer}.composer.unlocked .send-icon:hover{background:#1e6043}.composer.unlocked:focus-within{border-color:#297a58;box-shadow:0 0 0 3px #4ca37c26}.composer input[aria-invalid=true]{color:#9c3830}.personal-help{font-size:11px;line-height:1.5;margin:7px 14px 0;color:#4e7c61}.composer.unlock-pulse{animation:composerUnlock 1.6s ease-out 2}.color-choice{display:flex;align-items:center;gap:8px}.color-choice::before{content:'';display:block;width:13px;height:13px;border-radius:50%;background:var(--choice-color);box-shadow:inset 0 0 0 1px #00000015;flex-shrink:0}[data-ui="side-choices"]{min-height:0;padding:5px 23px 7px;gap:16px}[data-ui="side-choices"] .choice{max-width:none;overflow:visible;text-overflow:clip}[data-ui="side-choices"] .choice:first-child{color:#555;text-decoration-color:#a7a7a7}.choice.secondary:hover{color:#222;background:none}@keyframes composerUnlock{0%,100%{box-shadow:0 0 0 3px #4ca37c12;background:#f0faf4}35%{box-shadow:0 0 0 6px #4ca37c32;background:#dcf5e7}}
@media(max-width:850px){.composer input{font-size:16px}.composer input::placeholder{font-size:12px}.personal-help{font-size:11px;margin-inline:12px}.composer{min-height:56px}.composer.unlocked{padding:12px}.composer.unlocked .send-icon{width:32px;height:32px}.color-choice{gap:7px}[data-ui="side-choices"] button{font-size:11px}}


/* Independent conversations share only this navigation shell. */
#app{position:relative;isolation:isolate;background:#fff}
#chat-workspaces{display:flex;position:relative;flex:1;min-width:0;min-height:0;overflow:hidden}
.conversation-workspace{width:100%;height:100%;position:relative}
#chat-sidebar{width:210px;min-width:210px;height:100%;display:flex;flex-direction:column;padding:15px 11px 12px;gap:18px;flex:none;border-right:1px solid #e6e8ed;background:linear-gradient(160deg,#f8f9fc,#f4f5f7);transition:width .2s ease,min-width .2s ease;padding-bottom:max(12px,env(safe-area-inset-bottom));z-index:35}
.sidebar-top{display:flex;align-items:center;justify-content:space-between;gap:7px;min-height:35px;padding:0 2px}
.sidebar-brand{display:flex;align-items:center;gap:9px;min-width:0}
.sidebar-brand img{flex:none;width:28px;height:28px;object-fit:contain}
.sidebar-brand span{min-width:0}
.sidebar-brand strong{font-size:12px;font-weight:650;letter-spacing:-.02em;white-space:nowrap;display:block;color:#343b4a}
.sidebar-brand small{display:block;font-size:9px;color:#9198a6;margin-top:3px;letter-spacing:.02em}
.sidebar-icon-button{display:grid;place-items:center;width:28px;height:30px;flex:none;padding:5px;background:transparent;border:0;border-radius:7px;color:#8a91a0}
.sidebar-icon-button:hover{background:#e9ecf2;color:#465065}
.sidebar-icon-button svg,.open-chats svg,#new-chat svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}
#new-chat{display:flex;align-items:center;gap:9px;min-height:41px;flex:none;width:100%;padding:9px 12px;border:1px solid #dce1e9;border-radius:10px;background:#fff;color:#414b60;font-size:12px;font-weight:550;text-align:left;box-shadow:0 2px 5px #25345304}
#new-chat svg{flex:none;width:18px;height:18px;color:#727d96}
#new-chat:hover{border-color:#bac2d4;background:#fefeff;box-shadow:0 3px 10px #25345309}
.sidebar-chats{display:flex;flex-direction:column;flex:1;min-height:0;gap:8px}
.sidebar-section-label{margin:0 10px;font-size:9px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#9bA1ae}
#chat-list{display:flex;flex-direction:column;gap:5px;overflow-y:auto;overflow-x:hidden;min-height:0;flex:1;scrollbar-width:thin;padding:2px}
.chat-list-item{display:flex;align-items:center;min-width:0;gap:2px;border:1px solid transparent;border-radius:9px;position:relative;color:#6d7584;background:transparent}
.chat-list-item:hover{background:#eef0f5}
.chat-list-item.active,.chat-list-item[aria-current="true"]{background:#fff;border-color:#dce1eb;color:#354059;box-shadow:0 3px 8px #26385905}
.chat-list-item.active:before,.chat-list-item[aria-current="true"]:before{content:"";position:absolute;left:-1px;top:12px;bottom:12px;width:2px;border-radius:0 2px 2px 0;background:#747ca7}
.chat-list-open{display:block;flex:1;min-width:0;border:0;background:transparent;text-align:left;padding:11px 6px 11px 11px;color:inherit;border-radius:8px;font-size:12px;line-height:1.4}
.chat-list-title{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:500}
.chat-list-meta{display:block;margin-top:4px;font-size:9px;font-weight:400;color:#a1a7b2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-list-close{display:grid;place-items:center;flex:none;width:24px;height:27px;border:0;border-radius:6px;margin-right:4px;padding:0;background:transparent;color:#a1a7b2;font-size:17px;opacity:0}
.chat-list-item:hover .chat-list-close,.chat-list-item:focus-within .chat-list-close,.chat-list-item.active .chat-list-close{opacity:1}
.chat-list-close:hover{color:#635a65;background:#f1edf1}
.sidebar-footer{display:flex;align-items:center;gap:7px;color:#9aa1af;font-size:9px;line-height:1.5;white-space:nowrap;padding:11px 9px 0;border-top:1px solid #e6e9ee;flex:none;margin-top:auto}
.session-dot{height:5px;width:5px;flex:none;background:#a6adbd;border-radius:50%}
#sidebar-backdrop{display:none}
.chat-header .open-chats{border:0;background:transparent;display:grid;place-items:center;width:31px;height:32px;flex:none;padding:5px;border-radius:7px;color:#9298a4}
.chat-header .open-chats:hover{background:#f3f4f6;color:#4e5769}
.conversation-heading{flex:1;min-width:0}
.conversation-heading strong{display:block;font-size:16px;font-weight:600;color:#424853;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;letter-spacing:-.015em;line-height:1.35}
.conversation-heading small{font-size:10px;margin-top:3px;color:#959aa4;font-weight:400}
[data-ui="workspace"].has-preview .chat-header{padding:0 12px;gap:8px}
[data-ui="workspace"].has-preview .conversation-heading strong{font-size:13px}
[data-ui="workspace"].has-preview .conversation-heading small{font-size:9px}
[data-ui="workspace"].has-preview [data-ui="show-results"]{font-size:10px;padding:6px 8px}
[data-ui="toast"]{position:absolute;max-width:calc(100% - 30px);text-align:center}
#app.sidebar-collapsed #chat-sidebar{width:60px;min-width:60px;padding:14px 9px 12px;gap:17px}
#app.sidebar-collapsed .sidebar-top{flex-direction:column;gap:13px;padding:0}
#app.sidebar-collapsed .sidebar-brand span,#app.sidebar-collapsed .sidebar-button-label,#app.sidebar-collapsed .sidebar-chats,#app.sidebar-collapsed .sidebar-footer>span:last-child{display:none}
#app.sidebar-collapsed #new-chat{width:40px;height:40px;min-height:40px;padding:10px;justify-content:center}
#app.sidebar-collapsed .sidebar-footer{justify-content:center;padding:13px 0 1px}
@media(max-width:850px){
  #chat-sidebar,#app.sidebar-collapsed #chat-sidebar{position:fixed;top:0;bottom:0;left:0;height:100dvh;width:min(285px,86vw);min-width:0;padding:17px 14px 15px;gap:20px;z-index:60;transform:translateX(-100%);visibility:hidden;transition:transform .23s ease,visibility .23s ease;box-shadow:18px 0 50px #1a213229}
  #app.sidebar-open #chat-sidebar{transform:translateX(0);visibility:visible}
  #app.sidebar-open #sidebar-backdrop{display:block;position:fixed;inset:0;z-index:55;border:0;background:#1d253446;backdrop-filter:blur(2px);padding:0}
  #app.sidebar-collapsed .sidebar-top,.sidebar-top{flex-direction:row;padding:0 2px;gap:10px}
  #app.sidebar-collapsed .sidebar-brand span,#app.sidebar-collapsed .sidebar-button-label,#app.sidebar-collapsed .sidebar-footer>span:last-child{display:block}
  #app.sidebar-collapsed .sidebar-chats{display:flex}
  #app.sidebar-collapsed #new-chat{width:100%;height:auto;min-height:43px;padding:10px 13px;justify-content:flex-start}
  #app.sidebar-collapsed .sidebar-footer{justify-content:flex-start;padding:11px 9px 0}
  .sidebar-brand strong{font-size:13px}.sidebar-brand small{font-size:10px}
  .chat-list-open{padding:13px 7px 13px 12px}.chat-list-title{font-size:13px}.chat-list-meta{font-size:10px}
  .chat-list-close{opacity:1;width:29px;height:30px;margin-right:7px}
  .chat-header{gap:10px;padding:0 13px}.conversation-heading strong{font-size:14px}.conversation-heading small{font-size:9px}
  .chat-header [data-ui="show-results"]{font-size:10px;padding:7px 9px}
}

/* Five simultaneous conversations, explicit close confirmation. */
.sidebar-count{margin:-13px 11px -8px;color:#898989;font-size:10px}
#new-chat:disabled{cursor:not-allowed;opacity:.45}
#app.sidebar-collapsed .sidebar-count{margin:-8px 0;font-size:8px;text-align:center}
.chat-working{color:#866b32}.chat-working::before{content:'';display:inline-block;width:5px;height:5px;margin:0 5px 1px 0;border-radius:50%;background:#b49b64;animation:breathe 1.4s infinite}
.chat-unread{color:#287956;font-weight:600}
.chat-list-item.confirm-close{flex-wrap:wrap}
.chat-close-confirm{flex:0 0 100%;padding:0 10px 10px;font-size:11px;line-height:1.5}
.chat-close-confirm p{margin:4px 0 9px;color:#555}
.chat-close-confirm button{border:1px solid #ddd;border-radius:7px;background:#fff;font-size:11px;padding:6px 9px;margin-right:5px}
.chat-close-confirm .confirm-chat-close{border-color:#bc625f;background:#a34946;color:white}
@media(max-width:850px){#app.sidebar-collapsed .sidebar-count{margin:-13px 11px -8px;text-align:left;font-size:10px}}

/* Editing a previous answer preserves the guided answer strip. */
.message.user{position:relative}
.message.user:has(>.message-edit){margin-bottom:24px}
.message.user>p:last-of-type{margin-bottom:0}
.message-edit{position:absolute;top:calc(100% + 4px);left:0;display:grid;place-items:center;width:36px;height:36px;padding:9px;border:0;border-radius:10px;background:transparent;color:#8b8f97;opacity:0;transition:opacity .15s ease,background .15s ease,color .15s ease}
.message-edit svg{display:block;width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}
.message-edit .edit-pencil{display:block;width:18px;height:18px;font-family:Arial,sans-serif;font-size:22px;font-weight:400;line-height:18px;text-align:center;pointer-events:none}
.message.user:hover>.message-edit,.message.user:focus-within>.message-edit,.message.user.is-editing>.message-edit{opacity:1}
.message-edit:hover{background:#f1f2f5;color:#424b5d}
.message-edit:focus-visible{outline:2px solid #727d96;outline-offset:2px;background:#f1f2f5;color:#424b5d}
.message-edit:disabled{cursor:default;color:#adb2ba}
.message.user.is-editing{background:#edf0f6;box-shadow:inset 0 0 0 1px #bec8db}
.message.user.is-editing>.message-edit{background:#edf0f6;color:#53627d}
.edit-notice{display:flex;align-items:center;gap:12px;margin:0 0 12px;padding:10px 12px;border:1px solid #dce2ed;border-radius:11px;background:#f6f8fb;color:#536079;font-size:11px;line-height:1.5}
.edit-notice>span{flex:1;min-width:0;overflow-wrap:anywhere}
.edit-notice button{flex:none;min-height:34px;padding:7px 10px;border:1px solid #d5dce8;border-radius:8px;background:white;color:#4b5870;font-size:11px;line-height:1.4}
.edit-notice button:hover{background:#edf1f7;border-color:#bcc7da}
.chat-pane.editing-message .choice-heading{color:#53627d}
.chat-pane.editing-message [data-ui="choice-label"]{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-pane.editing-message [data-ui="choice-step"]{flex:none}
.chat-pane.editing-message .composer:not(.unlocked){border-color:#dce2ed}
@media(any-pointer:coarse),(hover:none){.message-edit{width:44px;height:44px;opacity:1}.edit-notice button{min-height:44px}}
@media(max-width:850px){.edit-notice{gap:8px;padding:9px 10px;font-size:11px}.edit-notice button{padding-inline:9px}}

/* Previous applications remain reachable after revising a conversation. */
.retained-results{border:1px solid #e0e5ed;border-radius:12px;padding:0 14px 14px;background:#fafbfc;color:#586274}
.retained-results:not([open]){padding-bottom:0}
.retained-results>summary{min-height:44px;padding:13px 0;font-size:12px;font-weight:550;line-height:1.5;cursor:pointer;overflow-wrap:anywhere}
.retained-results>summary::marker{color:#8a95a7}
.retained-results>summary:focus-visible{outline:2px solid #727d96;outline-offset:3px;border-radius:4px}
.retained-results>p{margin:0 0 12px;font-size:12px;line-height:1.6;color:#7a8393}
.retained-results>.artifact{width:100%;margin-top:9px;padding:12px;border-color:#e0e5ed;border-radius:10px}
.retained-results>.artifact:hover{background:#f4f6fa;border-color:#c7d0de}
.choice:disabled{cursor:not-allowed;opacity:.45}

/* Dark conversation shell. The intro and application documents stay independent. */
#app{--chat-bg:#0b1016;--chat-panel:#181d23;--chat-raised:#232a32;--chat-line:#35404c;--chat-text:#e8edf2;--chat-muted:#a5afbb;--chat-focus:#bacde0;background:var(--chat-bg)}
#chat-workspaces{background:var(--chat-bg)}
.chat-pane{background:var(--chat-bg);color:var(--chat-text);color-scheme:dark}
.chat-pane ::selection,#chat-sidebar ::selection{background:#455b73;color:#fff}
.chat-pane [data-ui="chat-scroll"],.chat-pane [data-ui="choices"],#chat-list{scrollbar-color:#495563 transparent}
:is(.chat-pane,#chat-sidebar,.preview-header) :is(button,a,summary,[tabindex]):focus-visible{outline:2px solid var(--chat-focus);outline-offset:3px}
.chat-header{background:var(--chat-bg)}
.chat-header>span,.conversation-heading strong{color:#e4eaf0}
.chat-header small,.conversation-heading small{color:#9ca7b5}
.chat-header button{border-color:#37414d;background:#1a212a;color:#d9e0e8}
.chat-header button:hover{border-color:#657386;background:#252f3b}
.chat-header .open-chats{background:transparent;color:#acb7c5}
.chat-header .open-chats:hover{background:#202832;color:#edf2f7}
.message.user{background:#232a32;color:#e5eaf0}
.message.assistant{color:#dce3ea}
.message h2{color:#edf2f7}
.thinking{color:#a5afbb}
.thinking i{background:#b8c3d1}
.typing::after{color:#c7d2df}
.summary{border-left-color:#526173}
.summary span{color:#9daaba}
.summary strong{color:#e3eaf1}
.composer-area{background:var(--chat-bg)}
.choice-heading,.busy-note,.footnote{color:#a5afbb}
.strip-arrow{color:#adb9c8}
.choice{border-color:#394451;background:#161d25;color:#dce4ec}
.choice:hover{background:#25303d;border-color:#65758a;color:#f1f5f8}
.choice.primary{background:#344252;border-color:#65788e;color:#f2f5f8}
.choice.primary:hover{background:#405267;border-color:#869bb2}
.choice.secondary{color:#aab6c5}
.choice.secondary:hover{color:#edf2f7;background:transparent}
[data-ui="side-choices"] button,[data-ui="side-choices"] .choice:first-child{color:#aab6c5;text-decoration-color:#5e6e82}
[data-ui="side-choices"] button:hover{color:#edf2f7;text-decoration-color:#a7b9ce}
.color-choice::before{box-shadow:inset 0 0 0 1px #ffffff36,0 0 0 1px #627184}
.composer{background:#272c31;border-color:#3a424b;color:#bcc6d1}
.composer>span:first-child{color:#b2becb}
.composer [role="textbox"]{color:#b8c3ce}
.send-icon{background:#46515e;color:#ced7e1}
.composer input{color:#e2eee8;caret-color:#c0e1d0}
.composer input::placeholder{color:#b2c9bd}
.composer.unlocked{border-color:#719b89;background:#1b2b27;box-shadow:0 0 0 3px #7db59a12}
.composer.unlocked>span:first-child{color:#afd1bd}
.composer.unlocked .send-icon{background:#c1ddce;color:#172b21}
.composer.unlocked .send-icon:hover{background:#d9ede1;color:#102419}
.composer.unlocked:focus-within{border-color:#a7cbb8;box-shadow:0 0 0 3px #95c4ac24}
.composer input[aria-invalid="true"]{color:#ffbcb4}
.personal-help{color:#b1cdbb}
.composer.unlock-pulse{animation-name:composerUnlockDark}
@keyframes composerUnlockDark{0%,100%{box-shadow:0 0 0 3px #7db59a12;background:#1b2b27}35%{box-shadow:0 0 0 6px #95c4ac28;background:#263d34}}
[data-ui="jump-bottom"]{border-color:#495564;background:#232c37;color:#dce6f0;box-shadow:0 3px 12px #0005}
[data-ui="jump-bottom"]:hover{background:#344151}
.generation-card{border-color:#35404c;background:#121923}
.generation-card>div:first-child{color:#b5c0ce}
.chat-pane .load-meter{background:#303b49}
.chat-pane .load-meter>i{background:#b0c1d4}
.artifact{border-color:#3a4654;background:#18212b;color:#e4ebf2}
.artifact:hover{background:#253140;border-color:#64778d}
.artifact-icon{border-color:#596a7e;background:#233041;color:#c4d1e0}
.artifact-copy strong{color:#e4ebf2}
.artifact-copy small,.artifact>span:last-child{color:#abb8c9}
.mail-card{background:#151e28;border-color:#354353;color:#dce5ee}
.mail-card pre{color:#c3cedb}
.mail-card a{background:#35485d;color:#eef3f9}
.mail-card a:hover{background:#425a75}
.mail-card small{color:#abb8c9}
[data-ui="toast"]{background:#263341;border:1px solid #52657c;color:#edf3f9;box-shadow:0 8px 30px #0005}

#chat-sidebar{background:#181d23;border-right-color:#303944;color:#dce3eb;color-scheme:dark}
.sidebar-brand strong{color:#e3e9f0}
.sidebar-brand small,.sidebar-section-label,.sidebar-count,.sidebar-footer{color:#a4afbd}
.sidebar-brand img{background:#edf0f3;border-radius:7px;padding:3px}
.sidebar-icon-button{color:#aab6c5}
.sidebar-icon-button:hover{background:#2a333e;color:#edf3fa}
#new-chat{background:#252d37;border-color:#414c5b;color:#e0e8f1;box-shadow:none}
#new-chat svg{color:#b9c9da}
#new-chat:hover{background:#303c4a;border-color:#687c94;box-shadow:none}
.chat-list-item{color:#bec9d6}
.chat-list-item:hover{background:#242d38}
.chat-list-item.active,.chat-list-item[aria-current="true"]{background:#29333f;border-color:#455468;color:#edf2f8;box-shadow:none}
.chat-list-item.active:before,.chat-list-item[aria-current="true"]:before{background:#abc0d9}
.chat-list-meta{color:#a7b3c2}
.chat-list-close{color:#a7b3c2}
.chat-list-close:hover{color:#f2d8d6;background:#453438}
.sidebar-footer{border-top-color:#343e4a}
.session-dot{background:#a6b9ca}
.chat-working{color:#d1bb97}
.chat-working::before{background:#d1bb97}
.chat-unread{color:#b5d9c5}
.chat-close-confirm p{color:#c2ccd8}
.chat-close-confirm button{background:#283340;border-color:#58677a;color:#e0e8f1}
.chat-close-confirm button:hover{background:#374658}
.chat-close-confirm .confirm-chat-close{background:#783f3e;border-color:#b17c76;color:#fff0ed}
.chat-close-confirm .confirm-chat-close:hover{background:#8a4b49}

.message-edit{color:#a6b4c5}
.message-edit:hover,.message-edit:focus-visible{background:#253140;color:#edf3fa}
.message-edit:disabled{color:#7f8b99}
.message.user.is-editing{background:#293646;box-shadow:inset 0 0 0 1px #798da7}
.message.user.is-editing>.message-edit{background:#293646;color:#cfdef0}
.edit-notice{background:#172331;border-color:#4a5e76;color:#c2d0e0}
.edit-notice button{background:#28394c;border-color:#657a94;color:#edf3fa}
.edit-notice button:hover{background:#354b64;border-color:#8a9eb7}
.chat-pane.editing-message .choice-heading{color:#bacce1}
.chat-pane.editing-message .composer:not(.unlocked){border-color:#60758e}
.edit-limit-note{font-size:11px;line-height:1.5;color:#b5c1cf}
.retained-results{background:#131d28;border-color:#3c4c60;color:#c8d5e5}
.retained-results>summary::marker{color:#adbed2}
.retained-results>p{color:#aebdce}
.retained-results>.artifact{border-color:#455973;background:#1d2b3b}
.retained-results>.artifact:hover{background:#2a3b50;border-color:#768eac}

/* Only the result tab bar follows the conversation theme. */
.preview-header{background:#080b0f;border-bottom-color:#35404d;color:#c1ccd9;color-scheme:dark}
.preview-tab{color:#abb8c9;background:transparent}
.preview-tab:hover{background:#151d27}
.preview-tab.active{background:#232d39;border-color:#526177;color:#eef3fa}
.preview-header .tab-close{color:#b7c4d4!important}
.preview-header .tab-close:hover{color:#fff!important}
[data-ui="preview-close"],[data-ui="preview-wide"]{color:#c5d0de}
[data-ui="preview-close"]:hover,[data-ui="preview-wide"]:hover{background:#24303e;color:#fff;border-radius:6px}

/* Quiet, inspectable preparation steps inside the conversation. */
.generation-activity{margin:15px 0 0;padding:0 14px 12px;border:1px solid #344150;border-radius:12px;background:#121b25;color:#c7d1de;font-size:12px;line-height:1.5}
.generation-activity:not([open]){padding-bottom:0}
.generation-activity>summary{display:flex;align-items:center;gap:10px;min-height:44px;padding:12px 0;cursor:pointer;list-style:none;font-size:12px;font-weight:500;color:#dbe4ee;overflow-wrap:anywhere}
.generation-activity>summary>span{flex:1;min-width:0}
.generation-activity>summary::-webkit-details-marker{display:none}
.generation-activity>summary::after{content:"";width:6px;height:6px;flex:none;margin-left:auto;margin-right:3px;border-right:1.5px solid #a6b6c9;border-bottom:1.5px solid #a6b6c9;transform:rotate(-45deg);transition:transform .18s ease}
.generation-activity[open]>summary::after{transform:rotate(45deg)}
.generation-activity .activity-list{display:flex;flex-direction:column;gap:4px;list-style:none;margin:0;padding:4px 0 0}
.generation-activity .activity-step{display:grid;grid-template-columns:22px minmax(0,1fr);align-items:center;gap:10px;position:relative;min-height:38px;padding:5px 0;color:#9baabc}
.generation-activity .activity-step:not(:last-child)::after{content:"";position:absolute;left:10px;top:28px;bottom:-9px;width:1px;background:#344354}
.generation-activity .activity-step>span:not(.activity-icon){min-width:0;overflow-wrap:anywhere}
.generation-activity .activity-icon{position:relative;z-index:1;display:grid;place-items:center;width:22px;height:22px;border:1px solid #506074;border-radius:7px;background:#1a2634;color:#a7b9cf;font-size:12px;line-height:1}
.generation-activity .activity-step.active{color:#e0e9f3}
.generation-activity .activity-step.active::after{display:none}
.generation-activity .activity-step.active .activity-icon{background:#2c3c50;border-color:#8a9eb9;color:#e1ebf8;box-shadow:0 0 0 3px #60799612}
.generation-activity .activity-step.complete{color:#b5cfbf}
.generation-activity .activity-step.complete .activity-icon{background:#22352d;border-color:#637f6e;color:#c2dfca}
.generation-activity .activity-caption{color:#a8b7c8;font-size:11px;font-weight:400;line-height:1.5}
.generation-activity>summary .activity-caption{margin-left:auto;text-align:right}
.generation-activity>.activity-caption{margin:0 0 6px}
.generation-activity .activity-disclosure{display:block;margin:12px 0 0;padding-top:10px;border-top:1px solid #344150;color:#a8b7c8;font-size:11px;line-height:1.5}
.homepage-hint{width:min(440px,100%);margin:18px 0 0;padding:12px 15px;border-left:2px solid #607a99;border-radius:0 10px 10px 0;background:#141e2a;color:#bac8d8;font-size:12px;line-height:1.65}
.homepage-hint>p{margin:0 0 7px}
.homepage-hint>a{display:inline-block;min-height:24px;padding:3px 0;color:#c5d9f0;font-size:12px;font-weight:500;line-height:1.5;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;text-decoration-color:#8ca8c8;overflow-wrap:anywhere}
.homepage-hint>a:hover{color:#edf5ff;text-decoration-color:#d5e6fa}
@media(max-width:850px){#chat-sidebar,#app.sidebar-collapsed #chat-sidebar{box-shadow:18px 0 50px #0006}#app.sidebar-open #sidebar-backdrop{background:#03070db8;backdrop-filter:blur(3px)}}

/* The split belongs to each conversation and can be resized independently. */
[data-ui="workspace"].has-preview .chat-pane{flex:0 0 var(--split,33.333%);min-width:280px}
.workspace-splitter{display:none;flex:none;width:9px;position:relative;background:#1c2630;cursor:col-resize;touch-action:none;z-index:3}
[data-ui="workspace"].has-preview .workspace-splitter{display:block}
.workspace-splitter::before{content:"";position:absolute;inset:0 auto 0 4px;width:1px;background:#445568}
.workspace-splitter::after{content:"⋮";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:grid;place-items:center;width:19px;height:48px;border-radius:11px;border:1px solid #62768d;background:#263544;color:#c4d3e2;font-size:22px;line-height:1}
.workspace-splitter:hover::after,.workspace-splitter.dragging::after{background:#354c64;color:#fff}
.workspace-splitter:focus-visible{outline:2px solid #bcd0e6;outline-offset:-2px}
.wide-preview .workspace-splitter{display:none!important}
@media(max-width:850px){[data-ui="workspace"].has-preview .workspace-splitter{display:none}[data-ui="workspace"].has-preview .chat-pane{display:none}}

/* The visitor can switch the entire conversation shell between two legible themes. */
#app[data-theme="light"]{--chat-bg:#fbfcfe;--chat-panel:#f0f3f7;--chat-raised:#e9edf3;--chat-line:#d7dfe9;--chat-text:#263343;--chat-muted:#5c6b7d;--chat-focus:#345882;color-scheme:light}
#app[data-theme="light"] #chat-sidebar{background:#f1f4f8;border-right-color:#d6dee9;color:#263343;color-scheme:light}
#app[data-theme="light"] .sidebar-brand strong,#app[data-theme="light"] .conversation-heading strong{color:#1d2b3b}
#app[data-theme="light"] .sidebar-brand small,#app[data-theme="light"] .sidebar-section-label,#app[data-theme="light"] .sidebar-count,#app[data-theme="light"] .sidebar-footer,#app[data-theme="light"] .conversation-heading small{color:#657489}
#app[data-theme="light"] .sidebar-icon-button,#app[data-theme="light"] .chat-list-close{color:#53647a}
#app[data-theme="light"] .sidebar-icon-button:hover,#app[data-theme="light"] .chat-list-item:hover{background:#e4eaf2;color:#25384f}
#app[data-theme="light"] #new-chat,#app[data-theme="light"] .chat-close-confirm button{background:#fff;border-color:#c8d2df;color:#2b3c50}
#app[data-theme="light"] #new-chat:hover,#app[data-theme="light"] .chat-close-confirm button:hover{background:#e9eff7}
#app[data-theme="light"] .chat-list-item{color:#43566c}
#app[data-theme="light"] .chat-list-item.active,#app[data-theme="light"] .chat-list-item[aria-current="true"]{background:#e0e9f4;border-color:#9eb3cb;color:#1c3551}
#app[data-theme="light"] .chat-list-meta,#app[data-theme="light"] .sidebar-footer{color:#68798c}
#app[data-theme="light"] .sidebar-footer{border-top-color:#d2dce7}
#app[data-theme="light"] .chat-pane,#app[data-theme="light"] .chat-header,#app[data-theme="light"] .composer-area{background:#fbfcfe;color:#263343;color-scheme:light}
#app[data-theme="light"] .chat-header button{background:#fff;border-color:#d2dce7;color:#405267}
#app[data-theme="light"] .chat-header button:hover{background:#eef3f9;border-color:#9cb1ca}
#app[data-theme="light"] .message.user{background:#e9eff6;color:#263343}
#app[data-theme="light"] .message.assistant,#app[data-theme="light"] .message h2{color:#263343}
#app[data-theme="light"] .thinking i{background:#6b7e93}
#app[data-theme="light"] .summary{border-left-color:#a8bbcf}
#app[data-theme="light"] .summary span,#app[data-theme="light"] .choice-heading,#app[data-theme="light"] .busy-note,#app[data-theme="light"] .footnote{color:#66778a}
#app[data-theme="light"] .summary strong{color:#263343}
#app[data-theme="light"] .choice{background:#fff;border-color:#d0d9e5;color:#35495e}
#app[data-theme="light"] .choice:hover{background:#edf3fa;border-color:#9db2ca;color:#213d5d}
#app[data-theme="light"] .choice.primary{background:#2e526f;border-color:#2e526f;color:#fff}
#app[data-theme="light"] .choice.primary:hover{background:#3d6688}
#app[data-theme="light"] [data-ui="side-choices"] button{color:#51677f;text-decoration-color:#9aadc2}
#app[data-theme="light"] .strip-arrow{color:#52667b}
#app[data-theme="light"] .composer{background:#eef2f6;border-color:#d6dfe9;color:#5b6d80}
#app[data-theme="light"] .composer [role="textbox"],#app[data-theme="light"] .composer>span:first-child{color:#63768a}
#app[data-theme="light"] .send-icon{background:#a9b9c9;color:#fff}
#app[data-theme="light"] .composer input{color:#1d3e32;caret-color:#237a69}
#app[data-theme="light"] .composer.unlocked{background:#edf8f1;border-color:#6fae8b}
#app[data-theme="light"] [data-ui="jump-bottom"]{background:#fff;border-color:#c4d1df;color:#405a72}
#app[data-theme="light"] .generation-card,#app[data-theme="light"] .generation-activity{background:#f3f6fa;border-color:#d5e0eb;color:#30465b}
#app[data-theme="light"] .generation-activity>summary,#app[data-theme="light"] .generation-activity .activity-step.active{color:#263e54}
#app[data-theme="light"] .generation-activity .activity-step,#app[data-theme="light"] .generation-activity .activity-caption,#app[data-theme="light"] .generation-activity .activity-disclosure{color:#62758a}
#app[data-theme="light"] .generation-activity .activity-icon{background:#e7eef6;border-color:#c0ccda;color:#4b6682}
#app[data-theme="light"] .artifact,#app[data-theme="light"] .retained-results{background:#fff;border-color:#d2dce7;color:#263343}
#app[data-theme="light"] .artifact:hover,#app[data-theme="light"] .retained-results>.artifact:hover{background:#f1f5fa}
#app[data-theme="light"] .artifact-copy strong,#app[data-theme="light"] .retained-results{color:#263343}
#app[data-theme="light"] .artifact-copy small,#app[data-theme="light"] .retained-results>p{color:#687b8d}
#app[data-theme="light"] .mail-card,#app[data-theme="light"] .edit-notice,#app[data-theme="light"] .homepage-hint{background:#eef3f9;border-color:#cbd9e8;color:#38516a}
#app[data-theme="light"] .mail-card pre,#app[data-theme="light"] .homepage-hint>a{color:#2f536f}
#app[data-theme="light"] .edit-notice button{background:#fff;color:#40546a;border-color:#c4d2e2}
#app[data-theme="light"] .message-edit{color:#516a82}
#app[data-theme="light"] .preview-header{background:#edf2f7;border-bottom-color:#cfd8e3;color:#3a5066;color-scheme:light}
#app[data-theme="light"] .preview-tab.active{background:#fff;border-color:#cbd6e2;color:#263343}
#app[data-theme="light"] .preview-header .tab-close,#app[data-theme="light"] [data-ui="preview-close"],#app[data-theme="light"] [data-ui="preview-wide"]{color:#40576d!important}
#app[data-theme="light"] .workspace-splitter{background:#e3eaf2}
#app[data-theme="light"] .workspace-splitter::before{background:#a8b8c9}
#app[data-theme="light"] .workspace-splitter::after{background:#fff;border-color:#9bacbf;color:#405a72}
#app[data-theme="light"] .workspace-splitter:hover::after{background:#eaf2f9}

.resizing-preview iframe{pointer-events:none}.resizing-preview{cursor:col-resize;user-select:none}