:root{color-scheme:light;--bg:#fff;--sidebar:#f8f8f8;--text:#222;--muted:#777;--line:#e7e7e7;--hover:#ededed;--bubble:#f3f3f3;--composer:#f4f4f4;--inverse:#fff;--accent:#286b55;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:15px}
:root[data-theme=dark]{color-scheme:dark;--bg:#212121;--sidebar:#171717;--text:#ececec;--muted:#aaa;--line:#383838;--hover:#303030;--bubble:#303030;--composer:#303030;--inverse:#222;--accent:#8cccb1}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button,input,textarea{font:inherit;color:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.35}button{border:0;background:transparent}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:3px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.chat-app{display:flex;height:100dvh;overflow:hidden}.sidebar{width:268px;flex-shrink:0;background:var(--sidebar);display:flex;flex-direction:column;padding:21px 14px 14px;border-right:1px solid var(--line)}.sidebar-top{display:flex;align-items:center;justify-content:space-between;padding:0 8px 25px}.school-mark{font-size:23px;font-weight:800;letter-spacing:-1.5px}.school-mark span{font-weight:400;color:var(--muted)}.icon-button{width:34px;height:34px;border-radius:8px;font-size:20px;display:inline-flex;align-items:center;justify-content:center}.icon-button:hover{background:var(--hover)}.new-chat{display:flex;align-items:center;gap:10px;padding:12px 10px;border-radius:9px;font-size:14px;font-weight:500;text-align:left}.new-chat:hover{background:var(--hover)}.new-chat span{font-size:23px;line-height:1}.new-chat kbd{margin-left:auto;font-size:10px;color:var(--muted);font-family:inherit;font-weight:400}.search{display:flex;align-items:center;gap:8px;margin:10px 0 26px;padding:8px 10px;border:1px solid var(--line);border-radius:8px}.search span{font-size:20px;color:var(--muted)}.search input{width:100%;min-width:0;background:transparent;border:0;font-size:13px;outline:0}.history-label{font-size:11px;font-weight:600;color:var(--muted);margin:0 10px 12px}#chat-history{flex:1;min-height:0;overflow:auto}.history-empty{color:var(--muted);font-size:12px;line-height:1.7;padding:0 10px}.history-row{display:flex;align-items:center;border-radius:8px;margin:2px 0}.history-row:hover,.history-row.active{background:var(--hover)}.history-open{flex:1;min-width:0;padding:12px 10px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:left;font-size:13px}.history-action{font-size:13px;padding:7px;border-radius:5px;color:var(--muted)}.history-action:hover{color:var(--text)}.sidebar-bottom{border-top:1px solid var(--line);padding-top:15px;margin-top:10px}.sidebar-bottom>a{display:flex;gap:12px;font-size:13px;padding:10px;border-radius:8px}.sidebar-bottom>a:hover{background:var(--hover)}.user-profile{display:flex;align-items:center;gap:10px;padding:18px 6px 0}.avatar{width:32px;height:32px;border-radius:50%;background:#dfece6;color:#2d5945;display:grid;place-items:center;flex-shrink:0;font-size:13px;font-weight:600}.user-profile>div{flex:1;min-width:0}.user-profile strong{display:block;font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-profile small{display:block;font-size:9px;color:var(--muted);margin-top:4px}.user-profile .icon-button{font-size:22px;width:28px}
.chat-main{flex:1;min-width:0;display:flex;flex-direction:column;position:relative}.chat-toolbar{display:flex;align-items:center;justify-content:space-between;padding:18px 28px;height:72px;flex-shrink:0}.chat-toolbar>div{display:flex;align-items:center;gap:12px}.app-name{font-size:20px;font-weight:600;letter-spacing:-.5px}.model-name{font-size:12px;font-weight:400;color:var(--muted);letter-spacing:0;margin-left:6px}.back-link{font-size:12px;color:var(--muted);padding:8px;border-radius:8px}.back-link:hover{background:var(--hover);color:var(--text)}.back-link span{margin-left:8px}.sidebar-open{display:none}.chat-scroll{overflow-y:auto;flex:1;min-height:0;overscroll-behavior:contain;padding:20px 30px 40px;scroll-behavior:smooth}.welcome{width:min(100%,740px);margin:max(50px,calc((100dvh - 650px)/2)) auto 0;text-align:center}.welcome-badge{font-size:10px;letter-spacing:1.8px;font-weight:600;color:var(--accent);margin-bottom:22px}.welcome h1{font-size:clamp(27px,3vw,37px);font-weight:500;letter-spacing:-1.4px;margin:0 0 14px}.welcome>p{font-size:14px;color:var(--muted);margin:0}.suggestions{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:45px}.suggestions button{text-align:left;border:1px solid var(--line);border-radius:14px;padding:20px 16px;transition:background .15s}.suggestions button:hover{background:var(--sidebar)}.suggestions span{font-size:23px;display:block;margin-bottom:25px;color:var(--muted)}.suggestions strong{font-size:12px;font-weight:500;display:block}.suggestions small{font-size:10px;color:var(--muted);display:block;margin-top:8px;line-height:1.6}
#chat-messages{max-width:760px;margin:auto}.message{margin:0 0 32px}.message.user{display:flex;justify-content:flex-end}.message.user .message-content{background:var(--bubble);border-radius:22px;padding:13px 20px;max-width:85%;white-space:pre-wrap}.message-content{font-size:15px;line-height:1.8;overflow-wrap:anywhere;min-width:0}.message.assistant{padding:0 6px}.message.assistant .message-content>:first-child{margin-top:0}.message.assistant .message-content>:last-child{margin-bottom:0}.message-content pre{overflow:auto;background:var(--sidebar);padding:18px;border:1px solid var(--line);border-radius:10px;white-space:pre;max-width:100%;font-size:13px}.message-content code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.87em}.message-content :not(pre)>code{background:var(--bubble);border-radius:4px;padding:2px 5px}.message-content a{color:var(--accent);text-decoration:underline}.message-content p{margin:0 0 14px}.message-content h2,.message-content h3{font-size:18px;margin:24px 0 12px}.message-content ul,.message-content ol{padding-left:24px}.message-copy{font-size:11px;color:var(--muted);padding:7px 0;margin-top:8px}.message-copy:hover{color:var(--text)}.thinking{color:var(--muted);animation:pulse 1.2s infinite}.composer-area{width:min(100% - 60px,780px);margin:0 auto;padding:0 0 16px;flex-shrink:0}#chat-form{background:var(--composer);border:1px solid var(--line);border-radius:26px;padding:16px 18px 10px}#chat-input{display:block;resize:none;width:100%;border:0;outline:0!important;background:transparent;line-height:1.6;min-height:30px;max-height:180px;padding:0 4px;font-size:15px}.composer-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:10px}.composer-bottom>span{font-size:10px;color:var(--muted);padding-left:4px}.send-button{width:34px;height:34px;background:var(--text);color:var(--inverse);border-radius:50%;font-size:24px;display:grid;place-items:center}.send-button#chat-stop{font-size:13px}.disclaimer{text-align:center;color:var(--muted);font-size:10px;margin:12px 0 0;line-height:1.6}#chat-status{margin:0 28px 8px;padding:12px 16px;border-radius:10px;background:var(--bubble);font-size:13px;line-height:1.6}#chat-status.error{color:#b43f32;background:#fff0ed}:root[data-theme=dark] #chat-status.error{background:#492823;color:#ffc4b8}dialog{background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:16px;padding:26px;max-width:420px;width:calc(100% - 40px)}dialog::backdrop{background:#0005}dialog h2{font-size:19px;margin-top:0}dialog label{display:block;font-size:12px;margin-bottom:8px}dialog input{border:1px solid var(--line);background:var(--sidebar);border-radius:8px;padding:10px;width:100%}dialog p{font-size:13px;line-height:1.6;color:var(--muted)}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:24px}.dialog-actions button{border:1px solid var(--line);padding:9px 16px;border-radius:8px}.dialog-actions button:last-child{background:var(--text);color:var(--inverse)}.sidebar-backdrop{display:none}@keyframes pulse{50%{opacity:.4}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
@media(max-width:800px){.sidebar{position:fixed;inset:0 auto 0 0;z-index:20;transform:translateX(-100%);transition:transform .2s}.sidebar.visible{transform:translateX(0)}.sidebar-open{display:inline-flex}.sidebar-backdrop:not([hidden]){display:block;position:fixed;inset:0;background:#0005;z-index:19}.chat-toolbar{padding:12px 16px;height:64px}.back-link{font-size:10px}.app-name{font-size:18px}.model-name{font-size:10px}.chat-scroll{padding:20px 20px 28px}.welcome{margin-top:max(30px,calc((100dvh - 630px)/2))}.suggestions{margin-top:30px;gap:8px}.suggestions button{padding:16px 10px}.suggestions span{margin-bottom:18px}.suggestions small{font-size:10px}.composer-area{width:calc(100% - 28px);padding-bottom:max(10px,env(safe-area-inset-bottom))}.disclaimer{font-size:9px;margin:9px 6px 0}#chat-status{margin:0 14px 8px}.message-content{font-size:14px}}
@media(max-width:450px){.welcome h1{letter-spacing:-1px;font-size:28px}.welcome-badge{font-size:9px}.welcome>p{font-size:12px}.suggestions{grid-template-columns:1fr;text-align:left;gap:8px;margin-top:26px}.suggestions button{display:grid;grid-template-columns:28px 1fr;gap:3px 12px;padding:13px 16px;border-radius:12px}.suggestions span{grid-row:1/3;margin:0;align-self:center;font-size:23px}.suggestions strong{font-size:12px}.suggestions small{margin:0;font-size:10px}.back-link{font-size:0}.back-link span{font-size:18px;margin:0}.welcome{margin-top:24px}.chat-toolbar{height:60px}.composer-bottom>span{font-size:9px}}
.school-mark{display:flex;align-items:center;gap:9px;letter-spacing:-.3px;font-size:15px}.school-mark img{width:34px;height:34px;object-fit:contain}.school-mark span{font-weight:600;color:var(--text)}.toolbar-logo{width:27px;height:27px;object-fit:contain}.welcome-logo{width:64px;height:64px;object-fit:contain;margin-bottom:24px}.welcome{margin-top:max(24px,calc((100dvh - 760px)/2))}.assistant-brand{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:600;margin:0 0 14px}.assistant-brand img{width:22px;height:22px;object-fit:contain}.message-wrap{min-width:0;max-width:100%}.message.user .message-wrap{max-width:85%}.message.user .message-content{max-width:100%}.composer-tools{display:flex;align-items:center;gap:8px}.composer-tools>span{font-size:10px;color:var(--muted)}.message-files{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}.message-files:empty{display:none}.file-card{display:flex;flex-direction:column;max-width:100%;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--sidebar);font-size:12px}.file-card span{padding:12px 16px;overflow-wrap:anywhere}.file-card:hover{border-color:var(--muted)}.generated-image{display:block;max-width:100%;max-height:420px;object-fit:contain}.attachment-pill{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:8px;padding:6px 10px;margin:0 6px 10px 0;font-size:11px;max-width:100%;overflow-wrap:anywhere}.attachment-pill button{font-size:18px}.sidebar-close{font-size:17px}@media(max-width:450px){.welcome-logo{width:45px;height:45px;margin-bottom:18px}.welcome{margin-top:12px}.welcome-badge{margin-bottom:16px}.suggestions{margin-top:22px}.composer-tools>span{font-size:9px}.app-name{font-size:17px}}
.message-sources{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.message-sources:empty{display:none}.message-sources a{font-size:11px;border:1px solid var(--line);border-radius:8px;padding:7px 10px;color:var(--accent)}.message-activity{font-size:12px;margin-top:12px}@media(min-width:1024px){.chat-app.sidebar-collapsed .sidebar{display:none}.chat-app.sidebar-collapsed .sidebar-open{display:inline-flex}}
.message-error .message-content{border:1px solid #d4897f;border-radius:12px;padding:16px 20px;background:#fff0ed;color:#842d22}.message-error .message-content code{overflow-wrap:anywhere;white-space:normal}:root[data-theme=dark] .message-error .message-content{background:#492823;color:#ffc4b8;border-color:#97594e}
.message-content .scnm-math-display{display:block;max-width:100%;overflow-x:auto;overflow-y:hidden;padding:4px 0;overflow-wrap:normal}.message-content .scnm-math-display .katex-display{margin:.65em 0}.message-content .scnm-math-inline{overflow-wrap:normal}.message-content .katex{font-size:1.12em}
.teacher-starters{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:24px}.teacher-starters button{min-width:0;padding:16px;text-align:left}.teacher-starters span{font-size:24px;margin-bottom:12px}.teacher-starters strong{font-size:13px}.teacher-starters small{font-size:11px}.welcome:has(.teacher-starters){margin-top:16px}.welcome:has(.teacher-starters) .welcome-logo{width:45px;height:45px;margin-bottom:16px}.welcome:has(.teacher-starters) h1{font-size:30px}@media(max-width:600px){.teacher-starters{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.teacher-starters button{display:flex;flex-direction:column;gap:4px;padding:12px}.teacher-starters span{margin:0 0 3px;font-size:21px}.teacher-starters strong{font-size:12px}.teacher-starters small{font-size:10px;line-height:1.45}.welcome:has(.teacher-starters) h1{font-size:25px}.welcome:has(.teacher-starters)>p{font-size:12px}.welcome:has(.teacher-starters) .welcome-logo{margin-bottom:10px;width:36px;height:36px}}
.answer-controls{margin-top:4px}.response-report{font-size:11px;color:var(--muted);padding:6px 0}.response-report:hover{color:var(--text)}.followup-suggestions{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.followup-suggestions button{font-size:12px;line-height:1.5;text-align:left;border:1px solid var(--line);border-radius:14px;padding:8px 12px;max-width:100%;overflow-wrap:anywhere}.followup-suggestions button:hover{background:var(--hover)}.feedback-dialog select,.feedback-dialog textarea{width:100%;background:var(--sidebar);border:1px solid var(--line);border-radius:8px;padding:10px;margin-bottom:16px;color:var(--text);font:inherit}.feedback-dialog textarea{resize:vertical;min-height:110px}
.library-open{font-size:13px;padding:10px;text-align:left;border-radius:8px}.library-open:hover{background:var(--hover)}.privacy-link{display:block;margin:3px auto 0;padding:3px 8px;color:var(--muted);font-size:10px;text-decoration:underline}.privacy-login{display:block;margin-top:10px;color:var(--accent);font-size:12px;text-decoration:underline}.library-dialog{max-width:780px;max-height:85dvh;overflow:auto}.library-header{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.library-header button{font-size:12px}.library-list article{border-top:1px solid var(--line);padding:14px 0}.library-list p{color:var(--text);white-space:pre-wrap}.library-list small{color:var(--muted);font-size:11px}.library-row{display:flex;justify-content:space-between;gap:12px}.library-row a{color:var(--accent);overflow-wrap:anywhere}.library-row button{font-size:11px;color:var(--muted);flex-shrink:0}
.starter-choice-list{display:grid;gap:10px;margin:20px 0}.starter-choice-list button{border:1px solid var(--line);border-radius:8px;padding:12px;text-align:left}.starter-choice-list button:hover{background:var(--hover)}
.disclaimer.guest-disclaimer{font-size:12px;color:var(--text);background:var(--bubble);border-radius:8px;padding:8px 10px}
.mode-selector{display:flex;align-items:center;gap:10px;margin:0 6px 10px;min-width:0}.mode-selector label{font-size:12px;color:var(--muted)}.mode-selector select{font:inherit;font-size:12px;color:var(--text);background:var(--sidebar);border:1px solid var(--line);border-radius:8px;padding:8px;max-width:100%;min-width:0}.mode-hint{font-size:10px;color:var(--muted);margin-left:auto;text-align:right}.message-mode{font-size:10px;color:var(--muted);font-weight:400}@media(max-width:450px){.mode-selector{gap:7px;flex-wrap:wrap}.mode-hint{flex-basis:100%;text-align:left;margin-left:0}}
/* Compact starters and a composer that adapts to tablets and the mobile keyboard. */
html,body{height:100%;overflow:hidden}.chat-app{height:var(--chat-height,100dvh);min-height:0}#chat-input{min-height:44px;font-size:16px}
.chat-scroll:has(.welcome:not([hidden])){display:flex;flex-direction:column}.chat-scroll:has(.welcome:not([hidden])) #chat-messages:empty{display:none}.chat-scroll:has(.welcome:not([hidden])) .welcome{margin:auto;width:min(100%,740px);padding-block:16px}
.teacher-starters{gap:10px;margin-top:24px}.teacher-starters button{display:flex;flex-direction:column;justify-content:center;gap:6px;min-height:86px;padding:16px 18px;border-radius:14px;background:var(--bg)}.teacher-starters button>span{display:none}.teacher-starters strong{font-size:14px;line-height:1.4;font-weight:500}.teacher-starters small{font-size:12px;line-height:1.5;margin:0}.teacher-starters button:hover{background:var(--sidebar);border-color:var(--muted)}
.composer-area{padding-bottom:max(12px,env(safe-area-inset-bottom))}.composer-bottom{gap:8px}.mode-selector{margin:0 4px 0 auto;gap:7px;flex-wrap:nowrap}.mode-selector select{min-height:40px;font-size:14px;border-radius:10px;padding:7px 10px;background:var(--bg)}.mode-selector label{font-size:12px}.composer-tools{min-width:0}.composer-tools .icon-button{flex-shrink:0}.send-button{flex-shrink:0}.privacy-link{min-height:30px;display:flex;align-items:center;justify-content:center;font-size:11px;margin-top:2px}.disclaimer{font-size:11px;line-height:1.45}
dialog{max-height:calc(var(--chat-height,100dvh) - 32px);overflow-y:auto;overscroll-behavior:contain}.library-row{align-items:flex-start}.library-row a{min-width:0;line-height:1.5}.library-row button,.library-header button{min-height:40px;padding:8px}.message-mode{background:var(--bubble);padding:2px 6px;border-radius:5px}.message-files{min-width:0}.file-card{min-width:0}
@media(max-width:1023px){
 .sidebar{position:fixed;inset:0 auto 0 0;display:flex;width:min(320px,calc(100vw - 48px));z-index:20;transform:translateX(-100%);transition:transform .2s;overflow-y:auto;padding-top:max(16px,env(safe-area-inset-top));padding-bottom:max(14px,env(safe-area-inset-bottom))}.sidebar.visible{transform:translateX(0)}.sidebar-open{display:inline-flex}.sidebar-backdrop:not([hidden]){display:block;position:fixed;inset:0;z-index:19;background:#0006}.sidebar-top{padding-bottom:16px}.sidebar .search{margin-bottom:20px}.sidebar .icon-button,.history-action{min-width:40px;min-height:40px}.new-chat kbd{display:none}
 .chat-toolbar{height:60px;padding:8px max(16px,env(safe-area-inset-right)) 8px max(12px,env(safe-area-inset-left))}.chat-toolbar>div{gap:9px;min-width:0}.chat-toolbar .icon-button{width:40px;height:40px}.app-name{font-size:18px}.back-link{font-size:12px}.chat-scroll{padding:14px 24px 24px}.composer-area{width:calc(100% - 40px)}.message-content{font-size:16px;line-height:1.7}.message.assistant{padding:0}.message.user .message-wrap{max-width:92%}.message.user .message-content{padding:12px 15px}.message-copy,.response-report{font-size:12px;min-height:36px}.followup-suggestions button{min-height:40px;font-size:13px}.composer-tools>span{font-size:11px}#chat-input{font-size:16px;min-height:44px}.welcome:has(.teacher-starters) h1{line-height:1.2}
}
@media(max-width:600px){
 .chat-toolbar{height:56px}.toolbar-logo{width:25px;height:25px}.app-name{font-size:17px}.back-link{font-size:0;padding:8px}.back-link span{font-size:20px;margin:0}.chat-scroll{padding:8px 16px 20px}.chat-scroll:has(.welcome:not([hidden])) .welcome{padding-block:12px}.welcome-logo,.welcome-badge{display:none}.welcome:has(.teacher-starters) h1{font-size:clamp(22px,6vw,26px);letter-spacing:-.6px;line-height:1.2;margin-bottom:10px}.welcome:has(.teacher-starters)>p{font-size:13px;line-height:1.5;max-width:340px;margin-inline:auto}.privacy-login{font-size:12px;margin-top:10px;line-height:1.5}
 .teacher-starters{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:18px}.teacher-starters button{display:flex;justify-content:center;min-height:54px;padding:10px 12px;border-radius:12px;text-align:left;gap:0}.teacher-starters strong{font-size:13px;line-height:1.4}.teacher-starters small{display:none}
 .composer-area{width:calc(100% - 24px);padding-bottom:max(6px,env(safe-area-inset-bottom))}#chat-form{border-radius:20px;padding:10px 12px 8px}#chat-input{padding:2px 2px;line-height:1.5;max-height:140px}.composer-bottom{margin-top:4px;gap:8px}.composer-tools>span{display:none}.composer-tools .icon-button,.send-button{width:44px;height:44px}.mode-selector{margin:0 0 0 auto;gap:6px}.mode-selector label{font-size:12px}.mode-selector select{font-size:16px;min-height:44px;padding:6px 8px}.disclaimer{font-size:10.5px;line-height:1.4;margin:8px 4px 0}.disclaimer.guest-disclaimer{font-size:11px;line-height:1.4;margin:8px 0 0;padding:6px 8px}.privacy-link{font-size:11px;min-height:30px;padding:6px 8px;margin-top:1px}
 #chat-status{margin:0 12px 6px;padding:9px 12px;font-size:12px}.assistant-brand{margin-bottom:10px}.message{margin-bottom:26px}.message-content pre{padding:12px;font-size:12px}.message-error .message-content{padding:12px}.message-sources a{max-width:100%;overflow-wrap:anywhere}.attachment-pill{font-size:12px;line-height:1.4;margin-bottom:8px}.attachment-pill button{min-width:32px;min-height:32px}.generated-image{max-height:min(420px,50dvh)}
 dialog{width:calc(100% - 24px);padding:20px;border-radius:16px;max-height:calc(var(--chat-height,100dvh) - 24px)}dialog h2{font-size:20px;line-height:1.3}dialog input,.feedback-dialog select,.feedback-dialog textarea{font-size:16px}.dialog-actions{gap:8px;margin-top:18px;flex-wrap:wrap}.dialog-actions button{min-height:44px}.library-header{align-items:center}.library-header h2{margin-bottom:8px}.library-list article{padding:12px 0}.library-row{gap:8px}.library-row a{font-size:14px}.library-list p{font-size:14px;line-height:1.5}.library-row button{padding:8px 0 8px 8px}.starter-choice-list button{min-height:48px}
}
@media(max-height:500px) and (max-width:1023px){.chat-toolbar{height:48px}.welcome-logo,.welcome-badge,.welcome>p{display:none}.chat-scroll:has(.welcome:not([hidden])) .welcome{padding-block:6px}.welcome:has(.teacher-starters) h1{font-size:22px;margin-bottom:8px}.teacher-starters{margin-top:12px;gap:6px}.teacher-starters button{min-height:44px;padding:8px 10px}.teacher-starters small{display:none}.disclaimer:not(.guest-disclaimer){display:none}.privacy-link{min-height:26px;padding:4px 8px}.sidebar-bottom{padding-top:8px}.user-profile{padding-top:10px}}
@media(max-width:360px){.chat-scroll{padding-bottom:8px}.chat-scroll:has(.welcome:not([hidden])) .welcome{padding-block:10px}.teacher-starters{gap:6px;margin-top:14px}.teacher-starters button{min-height:48px;padding:7px 10px}.teacher-starters strong{line-height:1.3}.welcome:has(.teacher-starters)>p{font-size:12px;line-height:1.5}.privacy-login{margin-top:8px}}
.response-toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:4px 18px}.response-toolbar .message-copy{margin-top:0}
.message-reasoning{margin:8px 0 16px;border:1px solid var(--line);border-radius:12px;padding:0 12px;color:var(--muted);font-size:13px}.message-reasoning summary{cursor:pointer;min-height:40px;align-content:center;font-weight:500}.reasoning-content{--reasoning-chrome:160px;white-space:pre-wrap;overflow-wrap:anywhere;max-height:min(640px,max(0px,calc(var(--chat-content-height,50dvh) - 48px)),max(64px,calc(var(--chat-content-height,50dvh) - var(--reasoning-chrome))));overflow:auto;line-height:1.6;padding:0 0 12px}
.message-wrap:has(.message-tools) .reasoning-content{--reasoning-chrome:224px}
@media(max-height:500px){#chat-input{max-height:64px}}
.message-tools{margin:8px 0 16px;border:1px solid var(--line);border-radius:12px;padding:0 12px;font-size:13px;color:var(--muted);min-width:0}.message-tools summary{cursor:pointer;min-height:40px;align-content:center;overflow-wrap:anywhere}.tool-call{border-top:1px solid var(--line);min-width:0}.tool-label{font-weight:600;margin:8px 0}.tool-call pre{white-space:pre-wrap;overflow-wrap:anywhere;max-height:320px;overflow:auto;margin:0 0 12px;line-height:1.5}
.message-warning .message-wrap{border-left:3px solid #b58218;padding-left:14px}
.thinking-effort{display:flex;justify-content:flex-end;align-items:center;gap:8px;margin-top:6px;color:var(--muted);font-size:12px}.thinking-effort[hidden]{display:none}.thinking-effort select{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:8px;min-height:34px;padding:4px 8px}@media(max-width:600px){.thinking-effort select{min-height:40px;font-size:16px}.thinking-effort{margin-top:4px}}