[data-teacher-tools-navigation]{gap:12px}
.teacher-tools-entry{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:8px 12px;border:1px solid #698aa744;border-radius:10px;background:#e5eff8;color:#244f72;font:600 13px/1.3 var(--site-font,Arial,sans-serif);text-decoration:none;white-space:nowrap;flex-shrink:0;transition:background .15s,border-color .15s}
.teacher-tools-entry svg{width:19px;height:19px;flex:none}.teacher-tools-entry:hover{background:#d4e6f4;border-color:#7299b7}.teacher-tools-entry:focus-visible{outline:3px solid #2f8bc7;outline-offset:3px}.dark .teacher-tools-entry{background:#263e55;color:#e0edf7;border-color:#7c9cb555}.dark .teacher-tools-entry:hover{background:#324f68}
@media(prefers-reduced-motion:reduce){.teacher-tools-entry{transition:none}}

#root header [data-testid="button-theme-toggle"]{display:none!important}
.header-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex-shrink:0}
.header-actions .appearance-trigger,.header-actions .site-refresh{margin-left:0}
#root .header-actions :is(.teacher-tools-entry,.appearance-trigger){
 display:inline-flex;align-items:center;justify-content:center;flex:0 0 44px;
 width:44px;min-width:44px;height:44px;min-height:44px;padding:10px;margin:0;
 border:1px solid var(--glass-edge);border-radius:12px;
 background:linear-gradient(145deg,rgba(255,255,255,.12),transparent 65%),var(--glass-surface);
 color:#294c69;box-shadow:var(--glass-shadow);
 -webkit-backdrop-filter:blur(24px) saturate(160%);backdrop-filter:blur(24px) saturate(160%);
 transition:background-color .15s,box-shadow .15s;
}
#root .header-actions :is(.teacher-tools-entry,.appearance-trigger) svg{width:20px;height:20px;flex:none}
#root .header-actions :is(.teacher-tools-entry span,.appearance-label){display:none}
.dark #root .header-actions :is(.teacher-tools-entry,.appearance-trigger){color:#e4edf6}
#root .header-actions :is(.teacher-tools-entry,.appearance-trigger):hover{background-color:var(--glass-selected)}
#root .header-actions :is(.teacher-tools-entry,.appearance-trigger):focus-visible{outline:3px solid #68a7d1;outline-offset:3px}
@media(prefers-reduced-motion:reduce){#root .header-actions :is(.teacher-tools-entry,.appearance-trigger){transition:none}}
[data-teacher-tools-navigation]>div:first-child{min-width:0}
.header-tooltip{position:fixed;z-index:10000;pointer-events:none;border:1px solid #65819b;border-radius:8px;padding:7px 10px;background:#20384d;color:#fff;box-shadow:0 4px 16px #0003;font:13px/1.4 var(--site-font,Arial,sans-serif);max-width:calc(100vw - 16px)}
@media(max-width:900px){
 [data-teacher-tools-navigation]{gap:8px;flex-wrap:nowrap}
 [data-teacher-tools-navigation]>div:first-child{flex:1}
 [data-teacher-tools-navigation] h1{line-height:1.2;font-size:clamp(14px,3.6vw,20px)}
 [data-teacher-tools-navigation] p{font-size:clamp(10px,2.6vw,12px);line-height:1.3}
 .header-actions{gap:6px}
 .header-actions .teacher-tools-entry,.header-actions .appearance-trigger{width:44px;height:44px;min-width:44px;padding:10px;flex-basis:auto}
 .header-actions .teacher-tools-entry span,.header-actions .appearance-label{display:none}
 .header-actions .site-refresh{display:none}
}
@media print{.header-actions,.header-tooltip{display:none!important}}