/* Shared Quizzboard chrome for standalone tools. Keep this deliberately narrow:
   Crosslink owns its game/card styles and must not inherit the SPA stylesheet. */
.hidden{display:none!important}
.bar{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:14px;
  padding:max(12px,env(safe-area-inset-top)) max(clamp(16px,4vw,40px),env(safe-area-inset-right)) 12px max(clamp(16px,4vw,40px),env(safe-area-inset-left));
  background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)
}
.brand{min-height:44px;min-width:44px;display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.05rem;color:var(--ink);text-decoration:none}
.brand img{width:26px;height:26px}
.nav-tabs{display:flex;gap:4px}
.nav-tab{min-height:44px;display:inline-flex;align-items:center;padding:8px 14px;border-radius:999px;font-weight:700;font-size:.9rem;color:var(--muted);text-decoration:none}
.nav-tab:hover{color:var(--ink);background:var(--panel-2)}
.nav-ico{display:none}.nav-ico svg{width:22px;height:22px;display:block}
.nav-tools{position:relative}.nav-tools-trigger{border:0;background:transparent;font:inherit;cursor:pointer;user-select:none}
.nav-tools-chevron{margin-left:2px;font-size:1rem;line-height:1;transition:transform 150ms ease}
.nav-tools.open .nav-tools-chevron{transform:rotate(180deg)}
.nav-tools-menu{display:block;position:absolute;top:calc(100% + 7px);left:0;z-index:60;width:260px;padding:7px;border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:0 14px 34px rgba(0,0,0,.45);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-4px);transition:opacity 140ms ease,transform 140ms ease,visibility 140ms ease}
.nav-tools-menu::before{content:"";position:absolute;left:0;right:0;top:-8px;height:8px}
.nav-tools.open .nav-tools-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
@media (hover:hover) and (pointer:fine){.nav-tools:hover .nav-tools-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}}
.nav-tools-item{display:grid;grid-template-columns:39px minmax(0,1fr);align-items:center;gap:10px;min-height:58px;padding:8px;border-radius:10px;color:var(--ink);text-decoration:none}
.nav-tools-item:hover,.nav-tools-item:focus-visible,.nav-tools-item[aria-current="page"]{background:var(--panel-2);outline:none}
.nav-tools-item>span:last-child{display:grid;gap:2px;min-width:0}.nav-tools-item b{font-size:.84rem}.nav-tools-item small{color:var(--muted);font-size:.7rem}
.nav-tools-mark{width:39px;height:39px;display:grid;place-items:center;border:1px solid color-mix(in srgb,var(--accent) 38%,var(--line));border-radius:10px;background:color-mix(in srgb,var(--accent) 12%,var(--panel));color:var(--accent);font-size:.7rem;font-weight:900;letter-spacing:.03em}
.nav-tools-mark-ecg{color:var(--coral);border-color:color-mix(in srgb,var(--coral) 38%,var(--line));background:color-mix(in srgb,var(--coral) 10%,var(--panel))}
.nav-tools-mark-cxr{color:#8b93ff;border-color:color-mix(in srgb,#8b93ff 38%,var(--line));background:color-mix(in srgb,#8b93ff 10%,var(--panel))}
.nav-tools-mark-crosslink{color:var(--gold);border-color:color-mix(in srgb,var(--gold) 38%,var(--line));background:color-mix(in srgb,var(--gold) 10%,var(--panel));font-size:.95rem}
.bar-spacer{flex:1}.bar .btn-quiet,.nav-tab{white-space:nowrap;flex:none}
.btn-quiet{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border:1px solid var(--line);border-radius:10px;background:transparent;color:var(--ink);font-weight:700;font-size:.9rem}
.btn-quiet:hover{background:var(--panel-2);border-color:color-mix(in srgb,var(--accent) 40%,var(--line))}.btn-quiet.compact{padding:7px 14px;font-size:.84rem}
.btn-text{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border:0;background:none;color:var(--muted);font-weight:700;font-size:.86rem;padding:8px 10px;border-radius:8px;text-decoration:none}
.btn-text:hover{color:var(--ink);background:var(--panel-2)}.icon-btn{min-width:44px;min-height:44px;font-size:1.1rem;line-height:1;padding:8px 10px}
.me-chip{display:inline-flex;align-items:center;gap:7px;padding:5px 12px 5px 6px;border-radius:999px;border:1px solid var(--line);background:var(--panel);font-size:.84rem;font-weight:800;color:var(--ink);text-decoration:none}
.me-chip .ava{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--panel-2);border:1px solid var(--line);font-size:.68rem;text-transform:uppercase}
.me-chip .ava img{width:100%;height:100%;display:block;object-fit:cover;border-radius:50%}
.streak-pill{display:inline-flex;align-items:center;gap:4px;padding:6px 12px;border-radius:999px;text-decoration:none;font-weight:800;font-size:.85rem;color:var(--flame);border:1px solid color-mix(in srgb,var(--flame) 45%,var(--line));background:color-mix(in srgb,var(--flame) 12%,var(--panel))}
.notification-button{position:relative;color:var(--ink)}.notification-bell{display:block;width:21px;height:21px}
.notification-badge{position:absolute;top:1px;right:0;min-width:19px;height:19px;display:inline-flex;align-items:center;justify-content:center;padding:0 5px;border:2px solid var(--paper);border-radius:999px;background:var(--coral);color:#fff;font-size:.65rem;font-weight:900;font-variant-numeric:tabular-nums;line-height:1}
.notification-panel{position:fixed;z-index:55;top:68px;right:clamp(16px,4vw,40px);width:min(390px,calc(100vw - 24px));max-height:min(560px,calc(100dvh - 84px));overflow:hidden;border:1px solid var(--line);border-radius:16px;background:var(--panel);box-shadow:0 14px 34px rgba(0,0,0,.45)}
.notification-head{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:58px;padding:8px 10px 8px 16px;border-bottom:1px solid var(--line)}
.notification-head>div{display:grid;gap:1px}.notification-head .muted{color:var(--muted);font-size:.72rem}.notification-list{max-height:min(490px,calc(100dvh - 145px));overflow-y:auto}
.notification-item{position:relative;display:grid;grid-template-columns:34px minmax(0,1fr);gap:10px;width:100%;min-height:70px;padding:12px 14px;text-align:left;border:0;border-bottom:1px solid var(--line);background:var(--panel);color:var(--ink)}
.notification-item:hover{background:var(--panel-2)}.notification-item.unread{background:color-mix(in srgb,var(--accent) 9%,var(--panel))}.notification-item.unread::after{content:"";position:absolute;top:16px;right:12px;width:7px;height:7px;border-radius:50%;background:var(--coral)}
.notification-item>span:nth-child(2){display:grid;gap:4px;padding-right:10px}.notification-item b{font-size:.82rem;line-height:1.35}.notification-item small{color:var(--muted);font-size:.7rem}.notification-icon{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:var(--panel-2);border:1px solid var(--line)}.notification-empty{padding:36px 18px;text-align:center;color:var(--muted);font-size:.86rem}
.qb-settings-modal{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:20px;background:rgba(0,0,0,.56)}
.qb-settings-card{width:min(480px,100%);max-height:min(700px,calc(100dvh - 40px));overflow:auto;padding:20px 22px;border:1px solid var(--line);border-radius:16px;background:var(--panel);color:var(--ink);box-shadow:0 20px 60px rgba(0,0,0,.42)}
.qb-settings-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.qb-settings-head>div{display:grid;gap:3px}.qb-settings-head p{margin:0;color:var(--muted);font-size:.68rem;font-weight:850;letter-spacing:.14em;text-transform:uppercase}.qb-settings-head h2{margin:0;font-size:1.25rem}.qb-settings-intro{margin:8px 0 4px;color:var(--muted);font-size:.84rem}
.qb-set-group{margin-top:18px}.qb-set-group h3{margin:0 0 8px;color:var(--muted);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase}.qb-set-row,.qb-settings-link{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:66px;padding:12px 0;border-top:1px solid var(--line);color:var(--ink);text-decoration:none}.qb-set-row>span,.qb-settings-link>span{display:grid;gap:2px}.qb-set-row b,.qb-settings-link b{font-size:.9rem}.qb-set-row small,.qb-settings-link small{color:var(--muted);font-size:.78rem;line-height:1.35}.qb-set-row select{font:inherit;color:var(--ink);background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:7px 10px}.qb-set-row input[type="checkbox"]{width:20px;height:20px;accent-color:var(--accent);flex:none}.qb-settings-link:hover b,.qb-settings-link:focus-visible b{color:var(--accent)}.qb-settings-link i{color:var(--accent);font-size:1.1rem;font-style:normal}
.qb-reduce-motion *, .qb-reduce-motion *::before, .qb-reduce-motion *::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
.beta-footer{max-width:1040px;margin:44px auto 96px;padding:22px 20px 0;text-align:center;color:var(--muted);font-size:.82rem;border-top:1px solid var(--line)}
.beta-footer p{margin:8px 0}.footer-study-note{color:var(--ink);font-weight:650}.footer-legal{display:inline-block}.footer-legal a{color:var(--muted);text-decoration:none;font-weight:700}.footer-legal a:hover{color:var(--accent);text-decoration:underline}
@media (max-width:860px){.bar{gap:10px}.nav-tab{padding:8px 11px}}
@media (max-width:720px){
  .bar{gap:8px;backdrop-filter:none;background:var(--paper)}.me-chip{max-width:40vw;overflow:hidden;white-space:nowrap}
  .nav-tabs{position:fixed;left:0;right:0;bottom:0;z-index:50;display:flex;gap:0;justify-content:space-around;background:color-mix(in srgb,var(--panel) 94%,transparent);backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
  .nav-tab{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;gap:3px;min-height:48px;padding:4px 2px;border-radius:12px;font-size:.75rem;background:none;border:0;color:var(--muted)}
  .nav-lbl{display:block;max-width:100%;overflow:hidden;text-overflow:ellipsis}
  .nav-tab:hover{background:none}.nav-ico{display:block;color:inherit}.nav-lbl{line-height:1;white-space:nowrap}.nav-tools{flex:1;min-width:0}.nav-tools>.nav-tab{width:100%}.nav-tools-chevron{display:none}
  .nav-tools-menu{top:auto;right:6px;bottom:calc(100% + 8px);left:auto;width:min(270px,calc(100vw - 20px));transform:translateY(4px);text-align:left}.nav-tools-menu::before{top:auto;bottom:-9px;height:9px}.nav-tools.open .nav-tools-menu{transform:translateY(0)}
  .footer-legal a{display:inline-flex;align-items:center;min-height:44px;padding:0 4px}.beta-footer{margin-bottom:84px}
}
@media (max-width:420px){.brand span{display:none}.bar{gap:5px}.bar .btn-quiet.compact{padding:7px 10px}.me-chip{max-width:34vw}}