/* The paper owns the full height. Navigation lives with the input, actions at its edge. */
:root{--studio-side:350px;--studio-rail:66px;--studio-head:110px;--studio-foot:72px}
html,body{height:100%;overflow:hidden}
.app{height:100dvh;min-height:0;margin:0;padding:0;background:#080c13}
.app>main{height:100dvh;max-width:none;width:calc(100% - var(--studio-rail));margin:0;padding:0;overflow:hidden}
.app>header{position:fixed;inset:0 auto auto 0;z-index:25;width:var(--studio-side);height:62px;min-height:0;padding:0;border:0;background:#0d1119;display:block;box-shadow:inset -1px 0 #232b38}
.app>header .topright{display:contents}
.app>header .wordmark{position:absolute;left:22px;top:13px;gap:11px;font-size:25px;white-space:nowrap}
.app>header .wordmark span{display:inline;font-size:7px;letter-spacing:1.7px;padding-left:11px}
.app>header .language-switch{position:absolute;right:54px;top:15px;margin:0;transform:none;min-height:31px}
.app>header #accountBtn{position:absolute;right:13px;top:15px;display:grid;place-items:center;width:32px;min-width:32px;height:32px;min-height:32px;padding:7px;border-radius:10px}
.app>header #accountButtonText{position:absolute;top:31px;left:50%;transform:translateX(-50%);width:52px;height:12px;overflow:hidden;text-overflow:ellipsis;clip-path:none;white-space:nowrap;text-align:center;font:500 7px/12px system-ui}
.app>header #accountBtn svg{width:17px;height:17px;margin:0}
.app>header #saveState{position:absolute;left:23px;top:42px;max-width:calc(var(--studio-side) - 40px);font-size:8px;line-height:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#8da5c0}
.app .tabs{position:static;display:contents;height:auto;min-height:0;border:0;margin:0;padding:0;overflow:visible}
.app .nav-create{position:fixed;z-index:25;left:0;top:62px;width:var(--studio-side);height:48px;display:grid;grid-template-columns:.95fr 1.4fr .7fr;gap:4px;padding:6px 15px 9px;background:#0d1119;border:0;box-shadow:inset -1px 0 #232b38}
.app .nav-create button{display:flex;align-items:center;justify-content:center;gap:6px;min-width:0;height:34px;padding:4px 5px;white-space:nowrap;font-size:10px;border:1px solid transparent;border-radius:10px;color:#9cb0ca}
.app .nav-create button.active{background:#1d324c;border-color:#344f70;color:#e5f2ff;box-shadow:none}
.app .nav-create button svg{width:13px;height:13px;flex:0 0 13px}
.app .nav-handwriting{position:fixed;z-index:25;left:0;bottom:28px;width:var(--studio-side);height:44px;display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:3px;padding:4px 14px;margin:0;background:#111823;border-top:1px solid #263244;border-right:1px solid #232b38}
.app .nav-handwriting:before{display:none}
.app .nav-handwriting button{display:flex;align-items:center;justify-content:center;gap:6px;min-width:0;height:35px;padding:4px;font-size:10px;white-space:nowrap;border:0;border-radius:8px;color:#b7c9df}
.app .nav-handwriting button.active{background:#233d5a;color:white}
.app .nav-handwriting button svg{width:14px;height:14px}
.app .nav-handwriting .badge{font-size:8px;margin:0;padding:1px 4px}
.app>main>footer{position:fixed;z-index:25;left:0;bottom:0;width:var(--studio-side);height:28px;max-width:none;margin:0;padding:0 18px;display:flex;align-items:center;justify-content:center;background:#0d1119;border-right:1px solid #232b38}
.app>main>footer>span{display:none}
.app>main>footer .footer-links{display:flex;align-items:center;justify-content:center;gap:20px;width:100%;font-size:9px}
.app>main>footer .footer-links a,.app>main>footer .footer-links button{font-size:9px;padding:3px 0;margin:0;color:#91a6c0}
#editorView.workspace{height:100dvh;display:grid;grid-template-columns:var(--studio-side) minmax(0,1fr);gap:0;overflow:hidden}
#editorView .inspector{height:100%;min-height:0;padding:var(--studio-head) 0 var(--studio-foot);overflow:hidden;display:flex;flex-direction:column}
#editorView .writing-form{min-height:0;overflow-y:auto;padding:22px 22px 18px}
#editorView .writing-text textarea{min-height:185px;height:clamp(185px,24dvh,265px);max-height:330px}
#editorView .writing-actions{flex:none;padding:15px 22px 17px}
#editorView .paper-area{height:100dvh;min-height:0;display:grid;grid-template-columns:48px minmax(0,1fr);grid-template-rows:minmax(0,1fr) auto 26px;border:0}
#editorView .paper-scroll{grid-column:2;grid-row:1;height:auto;max-height:none;min-height:0;padding:0 10px 16px}
#editorView .paper{max-width:960px}
#editorView .tool-dock:not(.tool-dock-right){grid-column:1;grid-row:1;padding-top:12px;width:48px}
#editorView .canvas-footer{grid-row:3;grid-column:1/-1;min-height:26px}
.studio-rail{position:fixed;right:0;top:0;bottom:0;z-index:26;width:var(--studio-rail);display:flex;align-items:center;flex-direction:column;gap:7px;padding:10px 6px;background:#0e141e;border-left:1px solid #263142;overflow-y:auto;scrollbar-width:none}
.studio-sidebar-toggle,.studio-rail #openBtn,.studio-rail #helpBtn,.studio-rail #shareBtn{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:4px;width:52px;min-width:0;min-height:46px;height:auto;padding:7px 3px;border:1px solid #34445a;border-radius:11px;background:#192536;color:#dceafe;font:500 10px/1.2 system-ui;text-align:center}
.studio-sidebar-toggle svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.5}
.studio-rail .action-caption{font-size:9px;line-height:1.2}
.studio-file-actions{display:flex;align-items:center;flex-direction:column;gap:7px;padding-bottom:10px;margin-bottom:2px;border-bottom:1px solid #2a3544;width:100%}
.studio-rail #openBtn svg,.studio-rail #shareBtn svg,.studio-rail #helpBtn svg{width:17px;height:17px;margin:0;flex:none}
.studio-rail .share-buttons{display:flex;flex-direction:column;gap:0;overflow:visible;border:0;border-radius:11px}
.studio-rail #shareBtn{border-radius:11px 11px 0 0;background:#a2d3ff;color:#102b46;border-color:#a2d3ff}
.studio-rail #shareBtn small{display:none}
.studio-rail #shareFormatsBtn{display:block;width:52px;min-width:0;min-height:21px;height:21px;padding:0;border:1px solid #a2d3ff;border-top-color:#709bc1!important;border-radius:0 0 11px 11px;background:#a2d3ff;color:#15334c;font-size:12px}
.studio-rail .tool-dock-right{display:flex;flex-direction:column;align-items:center;gap:5px;flex:1;min-height:0;width:100%;padding:0;border:0;background:none;overflow-y:auto;scrollbar-width:none}
.studio-rail .tool-dock-right .iconbutton{flex:0 0 35px;height:35px;width:40px;min-height:35px;margin:0}
.studio-rail #pageLabel{font-size:8px;line-height:1.5;text-align:center;white-space:normal;padding:2px 0}
.studio-rail .dock-divider{flex:none;height:1px;width:30px;margin:7px 0}
.studio-rail .sheet-zoom-tools{margin-top:8px;padding-top:8px}
body:not([data-view=editor]) .studio-rail .tool-dock-right{display:none}
#diagramDialog{height:100dvh!important;max-height:none;width:100%;margin:0;border:0;border-radius:0;padding:0;overflow:hidden}
#diagramDialog .diagram-layout{display:grid;grid-template-columns:var(--studio-side) minmax(0,1fr);height:100%;min-height:0;gap:0}
#diagramDialog .diagram-controls{min-height:0;overflow:hidden;display:flex;flex-direction:column;padding:var(--studio-head) 0 var(--studio-foot)}
#diagramDialog .diagram-form{min-height:0;overflow:auto;padding:22px}
#diagramDialog .diagram-actions{flex:none;padding:14px 22px 17px}
#diagramDialog .diagram-preview-panel{height:100%;min-height:0;max-height:none;border:0;border-radius:0;display:grid;grid-template-columns:minmax(0,1fr) 170px;gap:0;padding:0}
#diagramDialog .diagram-viewport{min-height:0;height:100%;border-radius:0}
#diagramDialog .diagram-camera-dock{padding-top:16px}
#mathView{height:100dvh;display:grid;grid-template-columns:var(--studio-side) minmax(0,1fr);grid-template-rows:minmax(0,1fr);overflow:hidden}
#mathView .math-inspector{padding:var(--studio-head) 0 var(--studio-foot);min-height:0;overflow:hidden}
#mathView .math-form{min-height:0;padding:22px}
#mathView .math-actions{flex:none;padding:14px 22px 17px}
#mathView .math-main{min-height:0;grid-template-columns:minmax(0,1fr) 170px;grid-template-rows:minmax(0,1fr)}
#mathView .math-canvas{height:auto;min-height:0;max-height:none;padding:0 10px 16px}
#trainingView,#collectionView{margin:0 0 0 var(--studio-side);height:100dvh;max-height:100dvh;padding:24px;overflow:auto}
.studio-sidebar-shade{display:none}
body.sidebar-collapsed{--studio-side:0px}
body.sidebar-collapsed .app>header,body.sidebar-collapsed .nav-create,body.sidebar-collapsed .nav-handwriting,body.sidebar-collapsed .app>main>footer{display:none}
body.sidebar-collapsed #editorView .inspector,body.sidebar-collapsed #diagramDialog .diagram-controls,body.sidebar-collapsed #mathView .math-inspector{display:none}
body.sidebar-collapsed #editorView.workspace,body.sidebar-collapsed #diagramDialog .diagram-layout,body.sidebar-collapsed #mathView{grid-template-columns:minmax(0,1fr)}
@media(min-width:1700px){:root{--studio-side:370px}#editorView .writing-form,#diagramDialog .diagram-form,#mathView .math-form{padding-left:27px;padding-right:27px}}
@media(min-width:1101px) and (max-width:1300px){:root{--studio-side:320px}.app>header .wordmark span{display:none}.app .nav-create{padding-left:10px;padding-right:10px}.app .nav-create button{font-size:9px}.app .nav-handwriting{padding-left:8px;padding-right:8px}.app .nav-handwriting button{font-size:9px}}
/* Keep account and language beside the page at every size. */
:root{--studio-rail:80px;--studio-bottom:0px}
.studio-identity{display:flex;flex-direction:column;align-items:center;gap:9px;width:100%;padding:0 0 12px;border-bottom:1px solid #2a3544}
.studio-identity .language-switch{position:static;display:flex;flex-direction:column;width:52px;padding:3px;margin:0;border-radius:13px;gap:2px;transform:none;background:#172230;border:1px solid #34445a}
.studio-identity .language-switch button{min-width:44px;min-height:44px;padding:6px;border-radius:9px;font-size:11px}
.studio-identity #accountBtn{background:#192b40;border:1px solid #3d5875;color:#dceafe;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;width:60px;min-width:0;min-height:54px;padding:6px 2px;border-radius:11px;font-size:9px}
.studio-identity #accountBtn svg{width:19px;height:19px;margin:0}
.studio-identity #accountButtonText{position:static;display:block;width:100%;height:auto;max-width:100%;font:500 9px/1.3 system-ui;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transform:none;clip-path:none}
.studio-rail{padding-top:max(10px,env(safe-area-inset-top));padding-bottom:max(10px,env(safe-area-inset-bottom));gap:9px;overscroll-behavior:contain}
.studio-rail>*{flex-shrink:0}
.studio-rail .tool-dock-right{flex:1 0 auto;overflow:visible}
.studio-rail .tool-dock-right .iconbutton{height:44px;min-height:44px;flex-basis:44px;width:44px}
.studio-sidebar-toggle,.studio-rail #openBtn,.studio-rail #helpBtn,.studio-rail #shareBtn{min-height:44px}
.studio-tools-toggle,.studio-tools-shade,.studio-tools-close{display:none}
.app>header .wordmark{top:13px}
.app .nav-create button{min-height:44px;height:44px}
.app .nav-create{height:58px}
:root{--studio-head:120px}
#editorView .tool-dock-left .iconbutton{width:44px;min-height:44px;height:44px}
/* Medium tablets keep the input column, without sacrificing the top of the page. */
@media(min-width:1000px) and (max-width:1279px){:root{--studio-side:288px}.app .nav-create{padding-left:8px;padding-right:8px}.app .nav-create button{font-size:9px}.app .nav-handwriting{padding-left:6px;padding-right:6px}.app .nav-handwriting button{font-size:9px}.app>header .wordmark span{display:inline}}
/* Camera controls are a dedicated side panel on smaller screens. */
@media(max-width:1279px){
 body[data-view=diagram] .studio-tools-toggle,body[data-view=math] .studio-tools-toggle{display:flex}
 #diagramDialog .diagram-preview-panel,#mathView .math-main{grid-template-columns:minmax(0,1fr)}
 #diagramDialog .diagram-camera-dock,#mathView .math-tools{display:none}
 body.tools-open #diagramDialog .diagram-camera-dock,body.tools-open #mathView .math-tools{display:block;position:fixed;z-index:36;top:0;bottom:var(--studio-bottom);right:var(--studio-rail);width:min(280px,calc(100vw - var(--studio-rail) - 16px));padding:16px;overflow:auto;background:#111c2b;border-left:1px solid #34445a;box-shadow:-20px 0 50px #0008}
 .studio-tools-close{display:block;min-height:44px;width:100%;margin-bottom:18px;border:1px solid #526c89;border-radius:12px;background:#203750;color:#d9edff;font-size:12px}
 body.tools-open .studio-tools-shade{display:block;position:fixed;inset:0 var(--studio-rail) var(--studio-bottom) 0;z-index:35;background:#0005;border:0;border-radius:0}
 #diagramDialog .diagram-camera-dock button,#mathView .math-tools button{min-height:44px}
}
/* Portrait tablets: separate navigation, paper and account rails; no top header. */
@media(max-width:999px){
 :root{--studio-side:72px;--studio-rail:76px;--studio-head:0px;--studio-foot:72px;--studio-bottom:0px}
 .app>main{margin-left:72px;width:calc(100% - 72px - var(--studio-rail));padding:0;height:100dvh}
 .app>header{display:block!important;width:72px;height:64px;box-shadow:none;background:#0d1119}
 .app>header .wordmark{left:8px;top:23px;font-size:16px;letter-spacing:-.5px}
 .app>header .wordmark span,.app>header #saveState{display:none}
 .app .nav-create,body.sidebar-collapsed .nav-create{display:flex;flex-direction:column;top:64px;left:0;width:72px;height:auto;padding:8px 5px;gap:8px;border:0;box-shadow:none}
 .app .nav-create button{flex-direction:column;gap:7px;height:63px;min-height:63px;width:62px;white-space:normal;text-align:center;padding:8px 3px;font-size:9px;line-height:1.25}
 .app .nav-create button svg{width:18px;height:18px;flex-basis:18px}
 .studio-sidebar-toggle:not(.studio-tools-toggle){position:fixed;left:10px;top:292px;z-index:40;width:52px;min-height:55px;background:#203750;border-color:#36597c}
 .studio-sidebar-toggle:not(.studio-tools-toggle) .action-caption{font-size:10px}
 .studio-rail{width:var(--studio-rail);bottom:var(--studio-bottom);border-bottom:0}
 .studio-tools-toggle{position:static}
 .app .nav-handwriting,body.sidebar-collapsed .nav-handwriting{position:fixed;display:flex;flex-direction:column;left:0;bottom:0;width:72px;height:auto;gap:8px;padding:10px 4px max(12px,env(safe-area-inset-bottom));border:0}
 .app .nav-handwriting button{flex-direction:column;gap:5px;white-space:normal;line-height:1.3;font-size:9px;min-height:60px;width:64px;padding:7px 3px}
 .app .nav-handwriting .badge{display:none}
 .app>main>footer{display:none}
 #editorView.workspace,#mathView,#diagramDialog{height:100dvh!important;min-height:0;display:grid;grid-template-columns:minmax(0,1fr)}
 #editorView .paper-area{height:100%;min-height:0;grid-template-columns:46px minmax(0,1fr)}
 #editorView .tool-dock-left{width:46px;padding-top:max(8px,env(safe-area-inset-top))}
 #editorView .paper-scroll{padding-left:3px;padding-right:3px}
 #editorView .inspector,#mathView .math-inspector,#diagramDialog .diagram-controls{display:none}
 #diagramDialog .diagram-layout{grid-template-columns:minmax(0,1fr)}
 #mathView .math-canvas{max-height:none;padding:0 5px 12px}
 #trainingView,#collectionView{height:100dvh;max-height:none;margin:0;padding:20px 12px}
 body.settings-open #editorView .inspector,body.settings-open #mathView .math-inspector,body.settings-open #diagramDialog .diagram-controls{display:flex!important;position:fixed;z-index:34;left:72px;top:0;bottom:0;width:min(360px,calc(100vw - 72px - var(--studio-rail)));height:auto;padding:0 0 28px;background:#0d1119;box-shadow:16px 0 40px #0009;border-right:1px solid #35465c}
 body.settings-open .app>main>footer{display:flex;left:72px;bottom:0;z-index:35;width:min(360px,calc(100vw - 72px - var(--studio-rail)));height:28px}
 body.settings-open .studio-sidebar-shade{display:block;position:fixed;z-index:30;inset:0 var(--studio-rail) 0 72px;background:#0005;border:0;border-radius:0}
 body.sidebar-collapsed #editorView.workspace,body.sidebar-collapsed #diagramDialog .diagram-layout,body.sidebar-collapsed #mathView{grid-template-columns:minmax(0,1fr)}
 .app .writing-form,.app .math-form,#diagramDialog .diagram-form{padding-top:20px}
}
/* Phones: bottom navigation, full-height paper, separate right action rail. */
@media(max-width:599px){
 :root{--studio-side:0px;--studio-rail:64px;--studio-bottom:calc(62px + env(safe-area-inset-bottom))}
 .app>main{margin:0;width:calc(100% - var(--studio-rail));height:calc(100dvh - var(--studio-bottom))}
 .app>header,body.sidebar-collapsed .app>header{display:none!important}
 .app .nav-create,body.sidebar-collapsed .nav-create{top:auto;bottom:0;left:0;width:75%;height:var(--studio-bottom);padding:5px 3px calc(5px + env(safe-area-inset-bottom));flex-direction:row;gap:2px;background:#101a28;border-top:1px solid #304157;z-index:40}
 .app .nav-create button{flex:1;width:auto;min-width:0;height:52px;min-height:52px;font-size:9px;gap:4px;padding:5px 2px}
 .studio-sidebar-toggle:not(.studio-tools-toggle){top:auto;bottom:0;left:75%;width:25%;height:var(--studio-bottom);min-height:0;border:0;border-radius:0;background:#182c44;padding:5px 3px calc(5px + env(safe-area-inset-bottom));gap:4px}
 .studio-rail{padding:6px 3px;gap:8px}
 .studio-identity{gap:7px;padding-bottom:8px}
 .studio-identity .language-switch{width:48px;padding:1px}
 .studio-identity #accountBtn{width:56px}
 .studio-rail #openBtn,.studio-rail #shareBtn,.studio-rail #helpBtn,.studio-tools-toggle{width:52px;padding:7px 2px;font-size:9px}
 #editorView.workspace,#mathView,#diagramDialog{height:calc(100dvh - var(--studio-bottom))!important}
 #editorView .paper-area{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr) 44px auto 20px}
 #editorView .tool-dock:not(.tool-dock-right){display:flex;flex-direction:row;grid-column:1;grid-row:2;width:100%;height:44px;padding:0;gap:0;overflow-x:auto;overflow-y:hidden;border:0;border-bottom:1px solid #243449}
 #editorView .tool-dock-left .iconbutton{flex:0 0 44px;width:44px;padding:6px;min-height:44px;height:44px}
 #editorView .tool-dock-left .dock-divider{width:1px;height:26px;margin:8px 4px;flex:none}
 #editorView .paper-scroll{grid-column:1;grid-row:1;padding:0 3px 8px}
 #editorView .canvas-footer{grid-row:4;grid-column:1;height:20px;min-height:20px;font-size:8px}
 #editorView .eraser-toolbar{grid-column:1;grid-row:3;max-height:100px;overflow:auto}
 .app .nav-handwriting,body.sidebar-collapsed .nav-handwriting{display:none}
 body.settings-open #editorView .inspector,body.settings-open #mathView .math-inspector,body.settings-open #diagramDialog .diagram-controls{left:0;bottom:var(--studio-bottom);width:calc(100vw - var(--studio-rail));padding-bottom:76px}
 body.settings-open .app .nav-handwriting{display:grid;grid-template-columns:1fr 1fr;left:0;bottom:calc(var(--studio-bottom) + 28px);width:calc(100vw - var(--studio-rail));height:48px;gap:0;padding:2px 4px;z-index:35}
 body.settings-open .app .nav-handwriting button{flex-direction:row;width:auto;min-height:44px;height:44px;font-size:9px}
 body.settings-open .app>main>footer{left:0;bottom:var(--studio-bottom);width:calc(100vw - var(--studio-rail))}
 body.settings-open .studio-sidebar-shade{inset:0 var(--studio-rail) var(--studio-bottom) 0}
 #trainingView,#collectionView{height:calc(100dvh - var(--studio-bottom));padding:16px 10px}
 #editorView .writing-form,#mathView .math-form,#diagramDialog .diagram-form{padding-left:14px;padding-right:14px}
 #editorView .writing-actions,#mathView .math-actions,#diagramDialog .diagram-actions{padding-left:14px;padding-right:14px}
 .app .nav-handwriting:before{display:none}
}
@media(max-height:600px) and (min-width:600px) and (max-width:999px){.app .nav-handwriting{display:none}.studio-sidebar-toggle:not(.studio-tools-toggle){top:282px}.app .nav-create{top:44px}.app .nav-create button{height:60px;min-height:60px}.app>header{height:44px}.app>header .wordmark{top:12px}body.settings-open .app .nav-handwriting{display:grid;grid-template-columns:1fr 1fr;left:72px;bottom:28px;width:min(360px,calc(100vw - 72px - var(--studio-rail)));height:48px;padding:2px 4px;z-index:35}body.settings-open .app .nav-handwriting button{flex-direction:row;width:auto;min-height:44px;height:44px}body.settings-open #editorView .inspector,body.settings-open #mathView .math-inspector,body.settings-open #diagramDialog .diagram-controls{padding-bottom:76px}}

#mathView .math-form{overflow-y:auto;overscroll-behavior:contain}
.studio-identity .language-switch button{color:#acbed4}
.studio-identity .language-switch button.active{background:#a2d3ff;color:#102b46}
.studio-settings-close{display:none}
@media(max-width:999px){
 .studio-settings-close{display:block;flex:none;min-height:44px;margin:12px 14px 0;padding:8px 12px;border:1px solid #415d7c;border-radius:12px;background:#203750;color:#d9edff;text-align:left;font-size:12px}
 .writing-form textarea,#mathText,.diagram-controls input[type=text]{font-size:16px}
 #editorView .sheet-settings-panel{left:50px;top:12px;width:320px;max-width:calc(100% - 60px);max-height:calc(100% - 40px)}
 body.studio-keyboard.settings-open #editorView .inspector,body.studio-keyboard.settings-open #mathView .math-inspector,body.studio-keyboard.settings-open #diagramDialog .diagram-controls{bottom:auto;height:var(--studio-visible-height)!important;padding-bottom:8px}
 body.studio-keyboard.settings-open .app .nav-handwriting,body.studio-keyboard.settings-open .app>main>footer{display:none}
}
@media(max-width:599px){
 #editorView .sheet-settings-panel{left:8px;right:8px;top:auto;bottom:70px;width:auto;max-width:none;max-height:calc(100% - 90px)}
 #editorView .sheet-settings-panel .paper-choices{grid-template-columns:repeat(3,minmax(0,1fr))}
 #editorView .sheet-settings-panel .paper-choice,#editorView .sheet-settings-panel .swatch,#editorView .sheet-settings-panel input[type=color]{min-height:44px;min-width:44px}
 #editorView .sheet-settings-panel .dock-panel-head button{min-height:44px;min-width:44px}
}
#trainingView,#collectionView{width:calc(100% - var(--studio-side));max-width:none}
@media(max-width:999px){#trainingView,#collectionView{width:100%}}
#editorView .writing-form,#mathView .math-form,#diagramDialog .diagram-form{flex:1 1 0;min-height:0;overflow-y:auto}
@media(min-width:600px) and (max-width:999px){.app .nav-handwriting button{position:relative}.app .nav-handwriting .badge{display:inline;position:absolute;top:3px;right:4px;font-size:8px}}
/* Account/language belong to navigation, leaving the right rail to page actions. */
:root{--studio-foot:132px}
.app>.studio-identity{position:fixed;z-index:25;left:0;bottom:72px;width:var(--studio-side);height:60px;padding:7px 18px;display:flex;flex-direction:row;justify-content:space-between;gap:12px;border:0;border-top:1px solid #263244;border-right:1px solid #263244;background:#111823}
.studio-identity .language-switch{width:auto;flex-direction:row;padding:2px;gap:2px}
.studio-identity .language-switch button{min-width:44px;min-height:44px}
.studio-identity #accountBtn{width:auto;max-width:160px;min-height:44px;height:44px;flex-direction:row;gap:8px;padding:8px 12px}
.studio-identity #accountButtonText{font-size:11px;width:auto}
body.sidebar-collapsed .app>.studio-identity{display:none}
@media(min-width:600px) and (max-width:999px) and (min-height:700px){
 :root{--studio-foot:72px}
 .app>.studio-identity,body.sidebar-collapsed .app>.studio-identity{display:flex;left:0;bottom:160px;width:72px;height:auto;padding:10px 7px;flex-direction:column;gap:9px;border:0;border-top:1px solid #263244;border-bottom:1px solid #263244}
 .studio-identity .language-switch{width:52px;flex-direction:column}
 .studio-identity #accountBtn{width:58px;height:auto;min-height:54px;flex-direction:column;gap:4px;padding:6px 2px}
 .studio-identity #accountButtonText{font-size:9px}
}
@media(max-width:599px),(max-width:999px) and (max-height:699px){
 :root{--studio-foot:72px}
 .studio-identity{position:static;flex:none;display:flex;flex-direction:row;justify-content:space-between;gap:8px;width:auto;height:60px;margin:8px 14px;padding:6px 0;border:0;border-bottom:1px solid #2a3544}
 .studio-identity #accountBtn{max-width:150px}
 #trainingView>.studio-identity,#collectionView>.studio-identity{margin:0 0 14px;padding:0 0 10px;height:auto;flex-wrap:wrap}
}