.os-tablet-menu{display:none}
/* Shared compact header: identical surface on every page, including the library. */
@media(max-width:1180px),(max-width:1366px) and (pointer:coarse){
 html body .app>.sidebar{background:#20252c!important;border-bottom:3px solid #416ac1!important;color:#f5f7ff;padding-top:8px}
 html body .sidebar .os-logo-brand .brand-text span{color:#b7cbff!important}
 html body .os-tablet-quick{background:#20252c!important}
 html body .os-tablet-quick a{background:transparent!important;color:#f5f7ff!important;border-color:#ffffff26!important}
 html body .os-tablet-quick a[aria-current=page]{background:#ffffff12!important;box-shadow:inset 0 -3px #96b4ff}
 html body .os-tablet-quick a:hover{background:#ffffff20!important}
 html body.elementary-ui .app>.sidebar{border-bottom-color:#15803d!important}
 html body.elementary-ui .sidebar .os-logo-brand .brand-text span{color:#86efac!important}
 html body.elementary-ui .os-tablet-quick a[aria-current=page]{box-shadow:inset 0 -3px #86efac}
}
.os-tablet-nav{display:contents}
.os-tablet-quick{display:none}
@media(max-width:1180px),(max-width:1366px) and (pointer:coarse){.sidebar:not(:has(.os-tablet-quick))>:not(.brand){display:none}.sidebar:not(:has(.os-tablet-quick)){min-height:177px}}
.sidebar .brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.sidebar .brand-icon{display:grid;place-items:center;flex:0 0 46px;width:46px;height:46px;border-radius:15px;background:linear-gradient(140deg,#233e92,#245df1);color:#fff;font-size:23px;box-shadow:none}
.sidebar .brand-text strong{display:block;color:#143c8d;font-size:18px;font-weight:800;line-height:1.25;letter-spacing:.3px}
.sidebar .brand-text span{display:block;margin-top:4px;color:#245df1;font-size:10px;font-weight:700;letter-spacing:2px}
/* Include large iPads with a touch screen, while leaving desktop layout intact. */
@media(max-width:1180px),(max-width:1366px) and (pointer:coarse){
 .app{display:block!important;min-width:0}
 .app>.sidebar{position:relative;height:auto;overflow:visible;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;padding:14px max(20px,env(safe-area-inset-left));border-right:0;border-bottom:1px solid var(--border,#dbe3ef)}
 .sidebar>.brand{margin:0;min-width:0}
 .os-tablet-menu{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:88px;padding:10px 16px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;color:#24344d;font-family:inherit;font-size:15px;font-weight:600;line-height:1.4;cursor:pointer}
 .os-tablet-nav{display:none;grid-column:1/-1;min-width:0}
 .os-menu-open>.os-tablet-nav{display:block}
 .os-tablet-nav a{min-height:44px;touch-action:manipulation}
 .app>main{min-width:0;padding:24px max(20px,env(safe-area-inset-right)) 100px}
 .app>.right-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));position:static;height:auto;min-width:0;padding:20px;gap:16px;border-left:0;border-top:1px solid var(--border,#dbe3ef)}
 .right-panel>.right-card{min-width:0;margin-bottom:0}
 .os-discovery-bar{flex-wrap:wrap}
 .os-discovery-link,.os-discovery-search,.op-guide button{min-height:44px}
 main :is(input:not([type=checkbox]):not([type=radio]):not([type=range]),select,textarea){font-size:16px}
 main :is(.button,.hero-button,.main-button,.small-button,.control-btn,.open-btn){min-height:44px;touch-action:manipulation}
 .instrument-main :is(.game-tabs button,.game-settings button,.dice-button,.auto-upgrade button,.duplicate-box button,.catalog-filters input,.catalog-filters select,.upgrade-map-controls button){min-height:44px;font-size:14px}
 .instrument-main .game-tabs [data-panel]{font-size:13px}
 .instrument-main .roll-workspace{grid-template-columns:minmax(0,1fr)}
 .instrument-main .game-side{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
 .instrument-dialog .dialog-close{width:44px;height:44px}
 .instrument-dialog{padding-top:60px;max-height:calc(100dvh - 32px)}
 :is(.drum-pad,#rrTap){touch-action:manipulation;-webkit-user-select:none;user-select:none}
 .instrument-main .upgrade-tree-viewport{height:60dvh;min-height:300px;max-height:650px}
 dialog{max-width:calc(100vw - 32px);max-height:calc(100dvh - 32px);overscroll-behavior:contain}
 :is(button,a,input,select,textarea):focus-visible{outline:3px solid #a46b16;outline-offset:3px}
}
@media(max-width:600px){
 .app>.sidebar{padding:12px 16px}
 .app>main{padding:18px 14px 100px}
 .app>.right-panel{grid-template-columns:1fr;padding:14px}
 .instrument-main .game-side{grid-template-columns:minmax(0,1fr)}
}
/* Account themes affect site navigation, while floating tools keep their own UI. */
@media(max-width:1180px),(max-width:1366px) and (pointer:coarse){
 html[data-theme]:not([data-theme=default]) .app>.sidebar{background:var(--theme-surface,#fff);border-color:var(--theme-border,#dbe3ef)}
 html[data-theme]:not([data-theme=default]) .os-tablet-quick{background:var(--theme-surface-2,#f8fafc)}
 html[data-theme]:not([data-theme=default]) .os-tablet-quick a{color:var(--theme-text,#173b78);background:var(--theme-surface-2,#f8fafc);border-color:var(--theme-border,#dbe3ef)}
 html[data-theme]:not([data-theme=default]) .os-tablet-quick a[aria-current=page]{color:var(--theme-text,#173b78);background:var(--theme-surface-3,#e9effa);box-shadow:inset 0 -3px var(--theme-primary,#245df1)}
 html[data-theme]:not([data-theme=default]) .sidebar .os-logo-brand .brand-text span{color:var(--theme-primary-dark,#173b78)}
}
/* Horizontal school-style navigation is reserved for tablet widths. */
@media(min-width:601px) and (max-width:1180px),(min-width:601px) and (max-width:1366px) and (pointer:coarse){
 .app>.sidebar{grid-template-columns:auto minmax(0,1fr) auto;gap:0;padding:0 max(16px,env(safe-area-inset-left));background:#20252c;border-top:3px solid #416ac1;border-bottom:3px solid #416ac1;z-index:30}
 .sidebar>.brand{padding:12px 18px 12px 0;gap:10px}
 .sidebar .brand-text strong{color:#143c8d;font-size:18px;white-space:nowrap}
 .sidebar .brand-text span{color:#245df1;font-size:10px}
 .sidebar .brand-icon{width:40px;height:40px;flex-basis:40px;border-radius:12px;font-size:21px}
 .os-tablet-quick{display:flex;align-self:stretch;justify-content:flex-end;min-width:0;background:#20252c}
 .os-tablet-quick a{display:flex;align-items:center;justify-content:center;min-height:64px;padding:12px 14px;border-left:1px solid #ffffff26;color:#f5f7ff;font-family:'Poppins',sans-serif;font-size:13px;font-weight:600;text-decoration:none;white-space:nowrap;transition:background .18s}
 .os-tablet-quick a[aria-current=page]{background:#ffffff12;box-shadow:inset 0 -3px #96b4ff}
 .os-tablet-quick a:hover{background:#ffffff14}
 .os-tablet-menu{margin-left:12px;min-width:74px;min-height:44px;border:1px solid #a0afc4;border-radius:5px;background:transparent;color:#fff;font-size:13px}
 .os-menu-open>.os-tablet-nav{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px 12px;padding:18px 0;border-top:1px solid #ffffff30;background:#20252c}
 .os-tablet-nav :is(.sidebar-label,.sidebar-bottom){grid-column:1/-1}
 .os-tablet-nav a{color:#f1f5ff;border-radius:6px;font-size:13px}
 .os-tablet-nav a:hover{background:#ffffff14}
 .os-tablet-nav a.active{background:#385b9c;color:#fff}
 .os-tablet-nav .sidebar-label{color:#b5c3da}
}
@media(min-width:601px) and (max-width:850px){
 .os-tablet-quick a{padding:10px;font-size:12px}
 .os-tablet-quick a:first-child{display:none}
 .sidebar .brand-text strong{font-size:18px}
 .sidebar>.brand{padding-right:10px}
}
/* Every destination stays visible, rather than reducing navigation to shortcuts. */
@media(max-width:1180px),(max-width:1366px) and (pointer:coarse){
 .app>.sidebar{grid-template-columns:minmax(0,1fr)}
 .os-tablet-menu{display:none}
 .sidebar>.brand{padding:12px 0}
 .os-tablet-quick{grid-column:1/-1;display:grid;grid-template-columns:repeat(var(--os-nav-count,9),minmax(0,1fr));grid-auto-rows:54px;gap:0;padding-bottom:0}
 .os-tablet-quick a,.os-tablet-quick a:first-child{display:flex;align-items:center;justify-content:center;min-width:0;min-height:44px;height:100%;padding:6px 5px;text-decoration:none;font-family:'Poppins',sans-serif;font-weight:600;font-size:12px;line-height:1.35;white-space:normal;text-align:center;border-bottom:1px solid #ffffff26}
}
@media(min-width:601px) and (max-width:850px){.os-tablet-quick a,.os-tablet-quick a:first-child{font-size:11px;padding:6px 3px}}
@media(max-width:600px){
 .os-tablet-quick{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-auto-rows:44px;gap:4px}
 .os-tablet-quick a{border:1px solid #dbe3ef;border-radius:8px;color:#24344d;background:#f6f8fc}
 .os-tablet-quick a[aria-current=page]{background:#e7efff;color:#143c8d;border-color:#9eb8ed;font-weight:700}
}
.sidebar .brand.os-logo-brand{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:5px;width:320px;max-width:100%;padding:8px 0;margin-top:0}
.os-logo-brand .os-hub-logo{display:block;width:100%;height:auto;aspect-ratio:4/1;object-fit:cover;object-position:center;background:#fff;border-radius:4px}
.sidebar .os-logo-brand>.brand-icon,.sidebar .os-logo-brand .brand-text strong{display:none}
.sidebar .os-logo-brand>.brand-text{position:static;margin:0;padding:0;width:100%;text-align:center}
.sidebar .os-logo-brand .brand-text span{margin:0;color:#245df1;font-size:10px;font-weight:700;letter-spacing:2px;line-height:16px}
@media(min-width:601px) and (max-width:1180px),(min-width:601px) and (max-width:1366px) and (pointer:coarse){.sidebar .os-logo-brand .brand-text span{color:#b7cbff}}
/* Music Classroom keeps its green identity in every navigation layout. */
.elementary-ui{--blue:#166534;--blue-dark:#14532d;--os-control-accent:#166534}
.elementary-ui .sidebar .os-logo-brand .brand-text span{color:#166534}
.elementary-ui .os-hub-logo{filter:hue-rotate(-80deg) saturate(.85)}
.elementary-ui .sidebar .brand-icon{background:linear-gradient(140deg,#14532d,#15803d)}
.elementary-ui .sidebar .brand-text strong{color:#14532d}
.elementary-ui .sidebar .side-link:hover{background:#dcfce7;color:#14532d}
.elementary-ui .sidebar .side-link.active{background:linear-gradient(135deg,#166534,#15803d);color:#fff;box-shadow:0 8px 18px #16653422}
.elementary-ui .os-tablet-quick a[aria-current=page]{background:#166534;color:#fff;box-shadow:inset 0 -3px #86efac;border-color:#86efac}
.elementary-ui .os-tablet-quick a:hover{background:#14532d;color:#fff}
.elementary-ui .sidebar .mini-card{background:#f0fdf4;border-color:#bbf7d0}
.elementary-ui .sidebar .mini-card :is(strong,a){color:#166534}
@media(max-width:1180px),(max-width:1366px) and (pointer:coarse){.elementary-ui .app>.sidebar{border-top-color:#15803d;border-bottom-color:#15803d}.elementary-ui .sidebar .os-logo-brand .brand-text span{color:#86efac}}
@media(max-width:600px){.elementary-ui .os-tablet-quick a{background:#f0fdf4;border-color:#bbf7d0;color:#166534}.elementary-ui .sidebar .os-logo-brand .brand-text span{color:#166534}}
@media(max-width:600px){
 .sidebar .brand.os-logo-brand{width:240px;padding:4px 0 8px;align-self:center;justify-self:center}
 .app>.sidebar{padding:8px 10px 10px;gap:6px}
 .os-tablet-quick a,.os-tablet-quick a:first-child{font-size:11px;line-height:1.25;padding:5px 4px;border-radius:6px}
 .os-discovery-bar{gap:5px}
 .os-discovery-link,.os-discovery-search{font-size:11px;padding:6px 9px;min-height:44px}
 .cozy-ui main :is(.button,.hero-button,.main-button,.small-button,.open-btn){font-size:12px;padding:7px 11px;min-height:44px;gap:6px}
 .op-guide button{font-size:11px;padding:6px 9px;min-height:44px}
 .os-discovery-bar{display:grid;grid-template-columns:auto auto minmax(0,1fr);align-items:stretch;margin-bottom:10px}
 .os-discovery-bar .os-discovery-search{margin:0;font-size:0;padding:6px 8px}
 .os-discovery-bar .os-discovery-search::after{content:'Search';font:600 11px Poppins,sans-serif}
 .main>.topbar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;width:100%;min-width:0;overflow:visible;margin-bottom:16px}
 .main>.topbar>*{min-width:0;width:100%;max-width:100%;margin:0;min-height:40px;padding:7px 8px;white-space:normal;text-align:center;justify-content:center;font-size:11px;line-height:1.4;box-sizing:border-box}
 .main>.topbar .home-updates-button{grid-column:1/-1}
 body{padding-bottom:calc(66px + env(safe-area-inset-bottom,0px))}
 body::after{content:'';position:fixed;left:0;right:0;bottom:0;height:calc(60px + env(safe-area-inset-bottom,0px));background:#fffffff5;border-top:1px solid #dbe3ef;z-index:999;pointer-events:none}
 body .fb-launch{left:10px;right:auto;bottom:calc(8px + env(safe-area-inset-bottom,0px));min-height:44px;padding:8px 12px;font-size:12px;border-radius:12px;box-shadow:none}
 body .ma-launcher{left:auto!important;right:10px!important;bottom:calc(8px + env(safe-area-inset-bottom,0px))!important;min-height:44px;padding:6px 10px;gap:7px;border-radius:12px;box-shadow:none;font-size:11px}
 body .ma-launcher small{display:none}
 body .ma-launch-icon{width:28px;height:28px;font-size:19px}
 body .ma-drawer{inset:auto 8px calc(66px + env(safe-area-inset-bottom,0px)) auto!important;width:calc(100vw - 16px)!important;max-width:calc(100vw - 16px)!important;height:min(700px,calc(100dvh - 82px));}
 body .ma-drawer textarea{font-size:16px!important}
}
/* Shared grouped navigation on public pages and account workspaces. */
.os-nav-group{margin:3px 0;border:0;border-radius:12px}.os-nav-group>summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:46px;padding:11px 12px;border-radius:12px;font:600 13px/1.45 Poppins,sans-serif;color:inherit;cursor:pointer;user-select:none}.os-nav-group>summary::-webkit-details-marker{display:none}.os-nav-group>summary::after{content:'›';font-size:22px;line-height:1;transform:rotate(0);transition:transform .15s}.os-nav-group[open]>summary::after{transform:rotate(90deg)}.os-nav-group>summary:hover{background:#7488aa13}.os-nav-group>summary:focus-visible{outline:3px solid #2563eb;outline-offset:2px}.os-nav-group-links{display:flex;flex-direction:column;gap:3px;padding:0 0 7px 10px;margin-left:11px;border-left:1px solid #a7b8ce55}.os-nav-group-links .side-link{min-height:42px;margin:0;padding:10px 11px!important;font-size:12px!important;white-space:normal;text-decoration:none!important}.os-nav-group-links .side-link i{width:18px;flex-shrink:0;text-align:center}.os-nav-group-links .side-link.active{color:#fff!important}.sidebar .side-menu>.side-link{min-height:44px;text-decoration:none!important}
@media(max-width:1180px),(max-width:1366px) and (pointer:coarse){html body .sidebar .os-tablet-menu{display:block;grid-column:1/-1;justify-self:stretch;width:100%;margin:8px 0 0;min-height:44px;border:1px solid #9cb3d1;border-radius:10px;background:#ffffff12;color:inherit;font:600 13px Poppins,sans-serif}html body .sidebar .os-tablet-quick{grid-template-columns:repeat(var(--os-nav-count,3),minmax(0,1fr))}html body .sidebar.os-menu-open>.os-tablet-nav{display:block;padding:14px 0}.os-tablet-nav .side-menu{display:flex;flex-direction:column;gap:4px}.os-nav-group>summary{min-height:48px}.os-nav-group-links .side-link{min-height:46px;font-size:13px!important}}
@media(max-width:1180px),(max-width:1366px) and (pointer:coarse){html body .sidebar .os-tablet-nav a.side-link{color:#e8eef8!important;opacity:1!important}html body .sidebar .os-tablet-nav a.side-link.active{color:white!important}.os-tablet-nav>.sidebar-bottom .mini-card{display:none}}
@media(min-width:1181px) and (pointer:fine){html body .app>.sidebar{position:relative;top:auto;height:auto;min-height:100vh;overflow:visible;padding:16px 12px}.os-tablet-nav>.sidebar-bottom .mini-card{display:none}.os-nav-group>summary{min-height:38px;padding:8px 10px;font-size:12px}.os-nav-group-links .side-link{min-height:36px;padding:8px 10px!important;font-size:12px!important}.sidebar .side-menu>.side-link{min-height:38px}}
html body .os-tablet-nav,html body .os-tablet-quick,html body .os-nav-group-links{overflow:visible;touch-action:auto}