/* Companion is a global staff surface; the work underneath stays interactive. */
html[data-theme] #assistantLauncher{z-index:140;bottom:max(20px,env(safe-area-inset-bottom));right:max(20px,env(safe-area-inset-right))}
html[data-theme] #assistantChat{z-index:150;width:min(460px,calc(100vw - 32px));height:min(760px,calc(100dvh - 110px));bottom:86px}
.companion-controls{display:grid;grid-template-columns:auto minmax(0,1fr);gap:6px 12px;align-items:center;padding:10px 16px;border-bottom:1px solid var(--ui-border);background:var(--ui-surface);flex-shrink:0}
.companion-controls label{font-size:12px;font-weight:600;color:var(--ui-text)}
html[data-theme] .companion-controls select{font-size:12px;min-height:40px;padding:8px 10px}
.companion-controls small{grid-column:1/-1;font-size:11px;color:var(--ui-muted)}
.assistant-chat-head h2{font-size:18px;line-height:1.5}
.assistant-chat-context{flex-shrink:0}.assistant-messages{min-height:0;overflow:auto;overscroll-behavior:contain}
.companion-plan{padding:18px;background:var(--ui-raised);border:1px solid var(--ui-border);border-radius:14px;margin-block:14px;color:var(--ui-text)}
.companion-plan h3{font-size:15px;line-height:1.6;margin:0 0 10px}.companion-plan ol{padding-left:20px;margin:0 0 14px;font-size:13px;line-height:1.8}.companion-plan p{font-size:12px;line-height:1.8;color:var(--ui-muted)}
html[data-theme] .companion-plan .pill{font-size:12px;margin:4px 4px 0 0;padding:9px 12px}
.companion-guide{position:fixed;left:20px;bottom:20px;z-index:160;width:min(420px,calc(100vw - 40px));padding:20px;background:var(--ui-surface);color:var(--ui-text);border:1px solid var(--ui-border);border-radius:18px;box-shadow:var(--ui-menu-shadow)}
.companion-guide strong{font-size:12px;color:var(--ui-primary)}.companion-guide p{font-size:14px;line-height:1.8;margin:8px 0 16px}.companion-guide>div{display:flex;gap:8px;flex-wrap:wrap}
html[data-theme] .companion-guide .pill{font-size:12px;padding:9px 12px;min-height:44px}
.companion-highlight{outline:3px solid var(--ui-focus)!important;outline-offset:5px;scroll-margin-block:180px}
.teacher-invite-page{padding-block:40px;max-width:680px;min-height:65vh}.teacher-invite-page>.panel{padding:32px}
.teacher-invite-page h1{font-size:30px;line-height:1.5}.teacher-invite-page p{font-size:14px;line-height:1.85;color:var(--ui-muted)}
#teacherInviteAccept,#teacherInviteCreate{display:grid;gap:18px;max-width:700px}
#teacherInviteAccept label,#teacherInviteCreate label,#teacherInviteResult label{display:grid;gap:7px;font-size:13px;color:var(--ui-text);font-weight:600}
#teacherInviteCreate small{font-size:12px;line-height:1.8;color:var(--ui-muted);font-weight:400}
#teacherInviteCreate fieldset{border:1px solid var(--ui-border);border-radius:14px;padding:18px;display:grid;gap:10px}
#teacherInviteCreate .invite-subject{display:flex;gap:10px;align-items:center;min-height:40px}
#teacherInviteResult{padding:20px;margin-block:24px;background:var(--ui-raised);border:1px solid var(--ui-border);border-radius:14px}#teacherInviteResult p{font-size:12px;line-height:1.8;color:var(--ui-muted)}
#teacherInviteCopy{margin-top:12px}.invitation-editor>section{margin-top:28px}
.invite-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid var(--ui-border)}
.invite-row strong{display:block;font-size:14px;line-height:1.65}.invite-row small{display:block;font-size:12px;line-height:1.8;color:var(--ui-muted);margin-top:5px}.invite-row button{padding:10px 14px;border:1px solid var(--ui-border);border-radius:10px;background:var(--ui-surface);color:var(--ui-text);min-height:44px}
#publicSupport:focus,#publicAnnouncements:focus{outline:2px solid var(--ui-focus);outline-offset:8px}
@media(max-width:680px){
 html[data-theme] #assistantChat{width:calc(100vw - 16px);right:8px;bottom:78px;height:min(720px,calc(100dvh - 96px))}
 .companion-guide{left:12px;bottom:max(12px,env(safe-area-inset-bottom));width:calc(100vw - 24px);padding:16px}
 .teacher-invite-page>.panel{padding:22px}.teacher-invite-page h1{font-size:26px}
 .invite-row{align-items:flex-start;flex-wrap:wrap}
}
.assistant-chat-head>div{min-width:0;overflow:hidden}
#assistantThreadTitle{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.assistant-chat-head>button{flex-shrink:0}
@media(max-width:680px){html[data-theme] .companion-controls select{font-size:16px}}
@media(prefers-reduced-motion:reduce){.companion-highlight{transition:none}}
/* Chat v8: one conversation surface, secondary tools disclosed on demand. */
html[data-theme] #assistantChat{width:min(440px,calc(100vw - 32px));height:min(700px,calc(100dvh - 110px));border-radius:24px;background:var(--ui-surface)!important;backdrop-filter:none;box-shadow:var(--ui-menu-shadow)}
html[data-theme] #assistantChat .assistant-chat-head{background:var(--ui-surface)!important;color:var(--ui-text);padding:14px 16px;border-bottom:1px solid var(--ui-border);gap:8px;flex-shrink:0}
html[data-theme] #assistantChat .assistant-chat-head h2{color:var(--ui-text)!important;font-size:16px;font-weight:700}
html[data-theme] #assistantChat .assistant-chat-head p{color:var(--ui-muted)!important;font-size:11px;line-height:1.6;max-width:100%}
html[data-theme] #assistantChat .assistant-chat-mark{display:none}
html[data-theme] #assistantChat .assistant-chat-head button{background:transparent!important;color:var(--ui-muted)!important;border-radius:12px}
html[data-theme] #assistantChat .assistant-chat-head button:hover{background:var(--ui-raised)!important;color:var(--ui-text)!important}
.assistant-options{flex-shrink:0;border-bottom:1px solid var(--ui-border);max-height:40%;overflow:auto;overscroll-behavior:contain}
.assistant-options>summary{display:flex;align-items:center;gap:8px;min-height:44px;padding:8px 18px;list-style:none;cursor:pointer;font-size:12px;font-weight:600;color:var(--ui-muted)}
.assistant-options>summary::-webkit-details-marker{display:none}
.assistant-options>summary svg{width:17px;height:17px;flex:none}
.assistant-options>summary::after{content:'+';margin-left:auto;font-size:18px;font-weight:400}
.assistant-options[open]>summary::after{content:'−'}
.assistant-options>summary:focus-visible{outline:2px solid var(--ui-focus);outline-offset:-3px}
html[data-theme] #assistantChat .companion-controls{padding:12px 18px;border:0;background:var(--ui-raised)}
html[data-theme] #assistantChat .assistant-chat-context{background:var(--ui-raised)!important;padding:10px 18px;border:0}
html[data-theme] #assistantChat .assistant-quick-forms{background:var(--ui-raised)!important;border:0;padding:8px 18px 14px}
html[data-theme] #assistantChat .assistant-quick-forms button{background:var(--ui-surface)!important;color:var(--ui-text)!important;border-color:var(--ui-border);min-height:44px}
html[data-theme] #assistantChat .assistant-messages{padding:20px 18px;flex:1;min-height:0;scrollbar-width:thin;background:var(--ui-surface)!important}
html[data-theme] #assistantChat .assistant-empty{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px 0;text-align:center}
html[data-theme] #assistantChat .assistant-empty>span{width:48px;height:48px;border-radius:16px;font-size:24px;background:var(--ui-raised);color:var(--ui-primary);margin-bottom:14px}
html[data-theme] #assistantChat .assistant-empty h3{font-size:22px;line-height:1.5;margin:0 0 10px;color:var(--ui-text)!important;letter-spacing:-.025em}
html[data-theme] #assistantChat .assistant-empty p{font-size:13px;line-height:1.8;max-width:30ch;margin:0 auto 24px;color:var(--ui-muted)!important}
html[data-theme] #assistantChat .assistant-suggestions{gap:8px;justify-content:center}
html[data-theme] #assistantChat .assistant-suggestions button{min-height:44px;padding:9px 12px;border:1px solid var(--ui-border);border-radius:12px;background:var(--ui-surface)!important;color:var(--ui-text)!important;font-size:12px;line-height:1.5}
html[data-theme] #assistantChat .assistant-message{border:0;box-shadow:none;border-radius:16px;padding:12px 14px;overflow-wrap:anywhere}
html[data-theme] #assistantChat .assistant-message.assistant{background:transparent!important;padding-left:0;padding-right:0}
html[data-theme] #assistantChat .assistant-message.user{background:var(--ui-raised)!important;color:var(--ui-text)!important}
html[data-theme] #assistantChat .assistant-message>span{color:var(--ui-muted)!important;font-size:10px}
html[data-theme] #assistantChat .assistant-message p{color:var(--ui-text)!important;font-size:14px;line-height:1.85;background:transparent!important;padding:0}
html[data-theme] #assistantChat .companion-plan p{background:transparent!important;color:var(--ui-muted)!important;padding:0;border:0;box-shadow:none}
html[data-theme] #assistantChat .assistant-thread-list{background:var(--ui-surface)!important;color:var(--ui-text);border-color:var(--ui-border)}
html[data-theme] #assistantChat .assistant-chat-composer{padding:12px 16px 14px;background:var(--ui-surface)!important;flex-shrink:0;border-top:1px solid var(--ui-border);gap:7px}
#assistantChat .assistant-chat-composer>label{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
html[data-theme] #assistantChat .assistant-chat-composer>div{background:var(--ui-raised)!important;border:1px solid var(--ui-border)!important;border-radius:18px;padding:8px;gap:8px}
html[data-theme] #assistantChat .assistant-chat-composer textarea{background:transparent!important;color:var(--ui-text)!important;min-width:0;min-height:64px;max-height:160px;resize:vertical;font-size:16px;line-height:1.6;padding:8px;border:0!important}
html[data-theme] #assistantChat .assistant-chat-composer button{background:var(--ui-primary)!important;color:var(--ui-on-primary)!important;border-radius:12px}
html[data-theme] #assistantChat .assistant-chat-composer small{font-size:10px;line-height:1.6;color:var(--ui-muted)!important;text-align:center}
html[data-theme] body:has(#assistantChat:not([hidden])) #assistantLauncher{visibility:hidden}
@media(max-width:680px){html[data-theme] #assistantChat{right:8px;bottom:max(8px,env(safe-area-inset-bottom));width:calc(100vw - 16px);height:min(740px,calc(100dvh - 24px));border-radius:22px}html[data-theme] #assistantChat .assistant-chat-head{padding:10px 12px}html[data-theme] #assistantChat .assistant-messages{padding:18px 16px}}
html[data-theme] #assistantChat .assistant-review .modal-card{width:100%;max-height:none;border:1px solid var(--ui-border);border-radius:16px;box-shadow:none;background:var(--ui-surface)!important}
html[data-theme] #assistantChat .assistant-review .modal-head{padding:14px;gap:8px}
html[data-theme] #assistantChat .assistant-review .modal-form{grid-template-columns:minmax(0,1fr);padding:14px}
html[data-theme] #assistantChat .assistant-review p{background:transparent!important;color:var(--ui-muted)!important;padding:0}
html[data-theme] #assistantChat .assistant-review .modal-form>*{min-width:0;grid-column:1}
html[data-theme] #assistantChat :is(.assistant-inline-actions,.proposal-actions){display:flex;flex-wrap:wrap;gap:8px}
html[data-theme] #assistantChat :is(.assistant-inline-card,.assistant-review) :is(input,select,textarea){min-width:0;max-width:100%;font-size:16px}
html[data-theme] #assistantChat .assistant-inline-card{background:var(--ui-surface)!important;border-color:var(--ui-border)!important;color:var(--ui-text)}
html[data-theme] #assistantChat .assistant-inline-card p{background:transparent!important;color:var(--ui-muted)!important;padding:0}
html[data-theme] #assistantChat .assistant-delete-review{padding:16px;border:1px solid var(--ui-border);border-radius:16px;background:var(--ui-surface);margin-block:12px;overflow-wrap:anywhere}
html[data-theme] #assistantChat .assistant-delete-review :is(p,small){background:transparent!important;color:var(--ui-muted)!important;padding:0;line-height:1.8}
html[data-theme] #assistantChat .assistant-delete-review h3{font-size:16px;line-height:1.6;color:var(--ui-text)!important}
html[data-theme] #assistantChat .assistant-delete-review .proposal-actions{margin-top:16px}
html[data-theme] #assistantChat .assistant-delete-review button{min-height:44px}

.companion-guide-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.companion-guide-toolbar label{display:grid;gap:4px;font-size:11px;color:var(--ui-muted)}
html[data-theme] #companionGuidePace{min-height:44px;padding:8px 10px;border:1px solid var(--ui-border);border-radius:9px;background:var(--ui-surface);color:var(--ui-text);font-size:12px}
#companionGuideText{min-height:3em;line-height:1.8}
@media(prefers-reduced-motion:no-preference){.companion-highlight{transition:outline-color .25s ease,box-shadow .25s ease;box-shadow:0 0 0 7px color-mix(in srgb,var(--ui-focus) 12%,transparent)}}