/* Aetholotl: soft neumorphic UI. Surfaces share the page colour and get depth from paired light/dark shadows.
   Study activities run in a full-screen "stage" sized to the viewport, so nothing needs page scrolling. */
:root{
  --bg:#e6ebf1;--sd:#bcc5d0;--sl:#ffffff;--track:#d8dfe7;--ink:#1b2d38;--muted:#43525a;--faint:#54626c;--edge:rgba(255,255,255,.6);--accent:#0b6c62;
  --accent-2:#128377;--on-accent:#ffffff;--focus:#a36c0d;--line:#78848d;--scroll-thumb:#6e7b85;--scroll-track:#d8dfe7;--scroll-thumb-hover:#0b6c62;
  --red:#ac2a42;--green:#18663e;--gold:#79500a;--coral:#a53b25;--violet:#5a45c9;--blue:#2b5fa8;--green-2:#196a40;--gold-2:#79500a;--coral-2:#a93d25;
  --violet-2:#5a45c9;--blue-2:#2b5fa8;--ok-bg:#cadcda;--bad-bg:#e3d6de;--warn-bg:#e1dbcd;--gold-soft:#dfd3bb;--radius:24px;--vh:100dvh;color-scheme:light
}
@supports not (height:100dvh){:root{--vh:100vh}}
:root{
  --raise:8px 8px 18px var(--sd),-8px -8px 18px var(--sl);--raise-sm:5px 5px 11px var(--sd),-5px -5px 11px var(--sl);--raise-xs:2px 2px 6px var(--sd),-2px -2px 6px var(--sl);
  --inset:inset 6px 6px 12px var(--sd),inset -6px -6px 12px var(--sl);--inset-sm:inset 3px 3px 7px var(--sd),inset -3px -3px 7px var(--sl)
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#242a32;--sd:#181c22;--sl:#303843;--track:#1d2229;--ink:#e4ebf0;--muted:#a6b3bd;--faint:#8996a1;--edge:rgba(255,255,255,.05);--accent:#34c3b2;
  --accent-2:#56dccb;--on-accent:#0b1219;--focus:#f0b23c;--line:#71777e;--scroll-thumb:#696e75;--scroll-track:#1d2229;--scroll-thumb-hover:#34c3b2;
  --red:#f38698;--green:#36ba77;--gold:#f0b23c;--coral:#de755c;--violet:#9585ed;--blue:#6894d1;--green-2:#5ec892;--gold-2:#f3c163;--coral-2:#e5917d;
  --violet-2:#aa9df1;--blue-2:#86a9da;--ok-bg:#253c3a;--bad-bg:#45343e;--warn-bg:#454034;--gold-soft:#413d33;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#242a32;--sd:#181c22;--sl:#303843;--track:#1d2229;--ink:#e4ebf0;--muted:#a6b3bd;--faint:#8996a1;--edge:rgba(255,255,255,.05);--accent:#34c3b2;
  --accent-2:#56dccb;--on-accent:#0b1219;--focus:#f0b23c;--line:#71777e;--scroll-thumb:#696e75;--scroll-track:#1d2229;--scroll-thumb-hover:#34c3b2;
  --red:#f38698;--green:#36ba77;--gold:#f0b23c;--coral:#de755c;--violet:#9585ed;--blue:#6894d1;--green-2:#5ec892;--gold-2:#f3c163;--coral-2:#e5917d;
  --violet-2:#aa9df1;--blue-2:#86a9da;--ok-bg:#253c3a;--bad-bg:#45343e;--warn-bg:#454034;--gold-soft:#413d33;color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 "Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased;overscroll-behavior-y:none}
body.immersive{overflow:hidden}
button,input,select{font:inherit;color:inherit}
button,select,input[type=search]{min-height:44px}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.45}
button,a,label,summary,[role="button"]{-webkit-tap-highlight-color:transparent;touch-action:manipulation}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
h1,h2,h3,h4,p{margin-top:0}
h1{font-size:clamp(28px,3vw,40px);line-height:1.15;letter-spacing:-1px;margin-bottom:8px;font-weight:800}
h2{font-size:22px;line-height:1.3;margin-bottom:10px;font-weight:800;letter-spacing:-.3px}
h3{font-size:17px;line-height:1.35;font-weight:700;margin-bottom:8px}
.ico{width:1.15em;height:1.15em;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;vertical-align:-.2em}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:12px;top:-100px;z-index:99;background:var(--bg);padding:10px;border-radius:10px;box-shadow:var(--raise-sm)}
.skip-link:focus{top:12px}
.small-note{font-size:12px!important;color:var(--muted)}
.muted{color:var(--muted)}
.eyebrow{display:flex;align-items:center;gap:6px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:1.6px;margin-bottom:6px;text-transform:uppercase}
body [hidden]{display:none!important}

/* ---------- Shell ---------- */
.app-shell{display:grid;grid-template-columns:250px minmax(0,1fr);min-height:var(--vh)}
.sidebar{position:fixed;inset:0 auto 0 0;width:250px;display:flex;flex-direction:column;gap:20px;padding:26px 18px;z-index:5;background:var(--bg);box-shadow:8px 0 22px -14px var(--sd)}
.brand{display:flex;gap:12px;align-items:center;color:var(--ink);text-decoration:none}
.brand strong{display:block;font-size:22px;letter-spacing:-.6px;font-weight:800;line-height:1.2}
.brand small{font-size:9.5px;letter-spacing:1.5px;color:var(--muted);font-weight:700}
.brand-mark{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--accent-2),var(--accent));box-shadow:var(--raise-sm);font-size:24px}
.brand-mark .logo{width:82%;height:82%;display:block}
.player-card{display:flex;gap:13px;align-items:center;padding:14px;border-radius:20px;box-shadow:var(--inset-sm)}
.player-card.bump,.hud-chip.bump,.stage-xp.bump{animation:bump .5s ease}
.player-info{min-width:0;flex:1}
.player-info small{display:block;font-size:10px;letter-spacing:1.4px;color:var(--accent);font-weight:800}
.player-info strong{display:block;font-size:14px;line-height:1.25;margin-bottom:6px}
.xp-text{font-size:11px;color:var(--muted)}
.level-ring{--size:58px;width:var(--size);height:var(--size);border-radius:50%;display:grid;place-items:center;flex-shrink:0;background:conic-gradient(var(--accent-2) calc(var(--p,0)*1turn),var(--track) 0);box-shadow:var(--raise-sm);transition:--p .9s cubic-bezier(.2,.8,.2,1)}
.level-ring>span{width:calc(var(--size) - 14px);height:calc(var(--size) - 14px);border-radius:50%;background:var(--bg);box-shadow:var(--inset-sm);display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1;font-weight:800;font-size:20px;color:var(--accent)}
.level-ring.big{--size:112px;animation:ringFill 1.1s cubic-bezier(.2,.8,.2,1)}
.level-ring.big>span{font-size:38px;width:calc(var(--size) - 20px);height:calc(var(--size) - 20px)}
.level-ring.mini{--size:34px;box-shadow:none}
.level-ring.mini>span{width:26px;height:26px;font-size:12px;box-shadow:none}
.level-ring small{font-size:9px;letter-spacing:1.5px;color:var(--muted);margin-top:3px}
.xp-track{height:10px;border-radius:10px;box-shadow:var(--inset-sm);background:var(--track);overflow:hidden;padding:2px}
.xp-track>span{display:block;height:100%;border-radius:8px;background:linear-gradient(90deg,var(--accent-2),var(--accent));transition:width .6s cubic-bezier(.2,.8,.2,1)}
.xp-track.small{height:8px;padding:1.5px}
.view .xp-track>span{animation:grow 1s cubic-bezier(.2,.8,.2,1);transform-origin:left}
.primary-nav{display:grid;gap:8px}
.nav-item{border:0;background:var(--bg);border-radius:14px;text-align:left;padding:11px 14px;display:flex;align-items:center;gap:12px;font-size:15px;font-weight:600;color:var(--muted);transition:box-shadow .2s,color .2s}
.nav-item:hover{box-shadow:var(--raise-xs);color:var(--ink)}
.nav-item.active{box-shadow:var(--inset-sm);color:var(--accent)}
.nav-icon{width:24px;display:grid;place-items:center;font-size:19px}
.sidebar-bottom{margin-top:auto;font-size:12px;color:var(--muted)}
.sidebar-bottom p{margin:8px 0 0}
.main-column{grid-column:2;min-width:0;display:flex;flex-direction:column;overflow-x:clip}
.topbar{height:72px;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:0 36px;position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.topbar-right{display:flex;align-items:center;gap:10px}
.hud{display:flex;gap:8px;align-items:center;margin-right:auto}
.hud-level{display:none;align-items:center;gap:8px;border:0;background:transparent;padding:0 4px 0 0;min-height:40px;font-weight:800;font-size:12.5px;color:var(--ink)}
.hud-rank{max-width:96px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hud-chip{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:30px;box-shadow:var(--raise-xs);font-size:13px;font-weight:800;white-space:nowrap}
.hud-chip.xp{color:var(--accent)}
.hud-chip.streak{color:var(--faint)}
.hud-chip.streak.lit{color:var(--coral-2)}
.hud-chip.streak.lit .ico{fill:currentColor;animation:flicker 1.6s ease-in-out infinite}
.icon-button{width:44px;height:44px;border:0;border-radius:14px;background:var(--bg);box-shadow:var(--raise-xs);display:grid;place-items:center;font-size:19px;color:var(--muted);transition:box-shadow .15s,color .15s}
.icon-button:hover{color:var(--accent)}
.icon-button:active,.icon-button[aria-pressed="false"]{box-shadow:var(--inset-sm)}
main{padding:12px 36px 36px;max-width:1320px;width:100%;margin:0 auto;flex:1}
main:focus{outline:none}
.view{display:none}
.view.active{display:block}
.footer{padding:18px 36px;font-size:11px;color:var(--muted);display:flex;justify-content:space-between;gap:20px}

/* ---------- Generic pieces ---------- */
.panel{background:var(--bg);border:1px solid var(--edge);border-radius:var(--radius);padding:24px;box-shadow:var(--raise)}
.button,.text-button{border:0;border-radius:14px;padding:10px 18px;min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font-weight:700;font-size:14px;transition:transform .15s ease,box-shadow .15s ease,filter .15s ease}
.button{background:linear-gradient(145deg,var(--accent-2),var(--accent));color:var(--on-accent);box-shadow:var(--raise-sm)}
.button:hover:not(:disabled){transform:translateY(-2px);filter:brightness(1.05)}
.button:active:not(:disabled){transform:translateY(1px) scale(.98);box-shadow:var(--inset-sm)}
.button.secondary{background:var(--bg);color:var(--ink);border:1px solid var(--edge)}
.button.big{padding:13px 22px;font-size:15px;min-height:52px;border-radius:16px}
.button.small{min-height:38px;padding:6px 12px;font-size:13px;border-radius:12px}
.button.wide{width:100%;max-width:440px}
.button.danger{background:linear-gradient(145deg,var(--coral-2),var(--coral));color:#fff}
.text-button{background:transparent;color:var(--accent);padding-left:4px;padding-right:4px}
.text-button:hover{text-decoration:underline;text-underline-offset:3px}
.button-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.xp-pill{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:800;padding:3px 9px;border-radius:20px;color:var(--accent);box-shadow:var(--inset-sm);white-space:nowrap}
.xp-pill.muted{color:var(--muted)}
.pill-row{display:flex;flex-wrap:wrap;gap:8px}
.pill{display:inline-flex;align-items:center;gap:6px;border:0;border-radius:999px;padding:8px 14px;min-height:40px;background:var(--bg);box-shadow:var(--raise-xs);font-weight:700;font-size:13px;color:var(--muted);transition:box-shadow .15s,color .15s,transform .15s}
.pill:active{transform:scale(.96)}
.pill.on{box-shadow:var(--inset-sm);color:var(--accent)}
.chip-row{display:flex;gap:8px;overflow-x:auto;padding:6px 4px 10px;margin:0 -4px;scroll-snap-type:x proximity;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.chip-row::-webkit-scrollbar,.carousel::-webkit-scrollbar,.quest-strip::-webkit-scrollbar{display:none}
.chip-row.compact{flex-wrap:nowrap}
.chip-btn{flex:0 0 auto;scroll-snap-align:start;display:inline-flex;align-items:center;gap:8px;border:0;border-radius:14px;padding:8px 13px;min-height:40px;background:var(--bg);box-shadow:var(--raise-xs);font-weight:700;font-size:12.5px;color:var(--muted);white-space:nowrap}
.chip-btn small{font-size:11px;font-weight:800;color:var(--faint)}
.chip-btn.on{box-shadow:var(--inset-sm);color:var(--accent)}
.chip-btn.on small{color:var(--accent)}
.chip-stat{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;padding:7px 12px;border-radius:30px;box-shadow:var(--raise-xs);color:var(--muted);white-space:nowrap}
.chip-stat .ico{color:var(--accent)}
.chip-stat.flame.lit .ico{color:var(--coral-2);fill:currentColor;animation:flicker 1.6s ease-in-out infinite}
.difficulty{display:inline-block;font-size:11px;font-weight:800;padding:3px 10px;border-radius:20px;color:#fff;background:linear-gradient(145deg,var(--green-2),var(--green))}
.difficulty.medium{background:linear-gradient(145deg,var(--blue-2),var(--blue))}
.difficulty.hard{background:linear-gradient(145deg,var(--coral-2),var(--coral))}
.topic-meta{font-size:11.5px;color:var(--muted);letter-spacing:.2px}
.retry-tag{font-size:11px;font-weight:800;color:var(--gold);padding:3px 10px;border-radius:20px;box-shadow:var(--inset-sm)}
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin:30px 0 14px}
.section-heading h2{margin:0}
.page-intro{margin:6px 0 18px}
.page-intro>p{color:var(--muted);max-width:760px;margin:0}
.empty-state{padding:28px;text-align:center;border-radius:20px;box-shadow:var(--inset-sm);color:var(--muted);grid-column:1/-1}
.star{color:var(--faint);display:inline-flex}
.star .ico{width:14px;height:14px}
.star.on{color:var(--gold)}
.star.on .ico{fill:currentColor}
.field{display:flex;flex-direction:column;gap:6px;min-width:0;flex:1}
.field>span{font-size:12px;font-weight:700;color:var(--muted)}
.field input,.field select{border:0;border-radius:12px;background:var(--bg);padding:9px 13px;color:var(--ink);width:100%;box-shadow:var(--inset-sm);font-size:15px}
.stat{padding:16px;border-radius:20px;box-shadow:var(--raise-sm);background:var(--bg);position:relative}
.stat strong{font-size:24px;display:block;line-height:1.25;font-weight:800;margin-top:4px}
.stat>span:not(.stat-icon):not(.difficulty){display:block;font-size:12px;color:var(--muted);margin-top:2px}
.stat-icon{position:absolute;top:14px;right:14px;color:var(--accent);opacity:.75;font-size:18px}
.offline-status{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.offline-status:empty{display:none}
.offline-status strong{display:block;font-size:12.5px;color:var(--ink)}
.offline-status small{display:block;font-size:11px}
.off-icon{width:32px;height:32px;border-radius:11px;display:grid;place-items:center;flex-shrink:0;box-shadow:var(--inset-sm);color:var(--accent);font-size:16px}
.off-icon.ok{background:var(--green-2);color:#fff;box-shadow:none}
.off-icon.warn{color:var(--gold)}
.off-icon.spin .ico{animation:bob 1s ease-in-out infinite}
.off-bar{flex-basis:100%;height:6px;border-radius:6px;box-shadow:var(--inset-sm);overflow:hidden}
.off-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--accent-2),var(--accent));transition:width .3s}

/* ---------- Home launchpad: everything above the fold ---------- */
.launch>*,.setup-grid>*,.result-grid>*,.trophy-top>*{min-width:0}
.launch{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);grid-template-areas:"focus focus" "hero next" "grid grid" "quests quests" "install install" "off off";gap:16px}
.focus-row{grid-area:focus;display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:4px 2px}
.focus-label{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:800;letter-spacing:1px;color:var(--accent);text-transform:uppercase;margin-right:4px;white-space:nowrap}
.focus-row .pill{white-space:nowrap}
.launch-hero{grid-area:hero;display:flex;gap:22px;align-items:center;padding:20px 22px}
.hero-text{flex:1;min-width:0}
.hero-title{font-size:clamp(22px,2.4vw,32px);letter-spacing:-.6px;margin-bottom:8px}
.hero-sub{font-size:13px;color:var(--muted);margin:8px 0 10px}
.hero-sub strong{color:var(--accent)}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px}
.launch-next{grid-area:next;display:flex;align-items:center;gap:14px;text-align:left;border:1px solid var(--edge);border-radius:var(--radius);padding:18px 20px;background:linear-gradient(150deg,color-mix(in srgb,var(--accent-2) 16%,var(--bg)),var(--bg) 70%);box-shadow:var(--raise);transition:transform .15s,box-shadow .15s;color:var(--ink)}
.launch-next:hover{transform:translateY(-2px)}
.launch-next:active{transform:scale(.985);box-shadow:var(--inset-sm)}
.launch-next-icon{width:52px;height:52px;border-radius:17px;display:grid;place-items:center;flex-shrink:0;font-size:24px;color:#fff;background:linear-gradient(145deg,var(--accent-2),var(--accent));box-shadow:var(--raise-xs);animation:breathe 2.6s ease-in-out 1s infinite}
.launch-next-text{flex:1;min-width:0}
.launch-next-text small{display:block;font-size:10.5px;font-weight:800;letter-spacing:1.4px;color:var(--accent)}
.launch-next-text strong{display:block;font-size:17px;line-height:1.3;margin:2px 0}
.launch-next-text span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:13px;color:var(--muted)}
.launch-go{display:inline-flex;align-items:center;gap:6px;font-weight:800;font-size:14px;color:var(--accent);white-space:nowrap}
.launch-next.compact{width:100%;margin:4px 0 14px;padding:14px 16px}
.launch-grid{grid-area:grid;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px}
.launch-tile{--c1:var(--accent-2);--c2:var(--accent);display:flex;flex-direction:column;align-items:flex-start;gap:4px;text-align:left;border:1px solid var(--edge);border-radius:22px;padding:16px;background:var(--bg);box-shadow:var(--raise-sm);color:var(--ink);transition:transform .15s,box-shadow .15s;min-height:116px}
.launch-tile:hover{transform:translateY(-3px)}
.launch-tile:active{transform:scale(.97);box-shadow:var(--inset-sm)}
.launch-tile strong{font-size:14.5px;line-height:1.25}
.launch-tile small{font-size:11.5px;color:var(--muted);font-weight:600}
.tile-icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;font-size:20px;color:#fff;background:linear-gradient(145deg,var(--c1),var(--c2));box-shadow:var(--raise-xs);margin-bottom:6px}
.launch-tile:hover .tile-icon{animation:wiggle .5s ease}
.launch-tile.blue{--c1:var(--blue-2);--c2:var(--blue)}
.launch-tile.gold{--c1:var(--gold-2);--c2:var(--gold)}
.launch-tile.coral{--c1:var(--coral-2);--c2:var(--coral)}
.launch-tile.violet{--c1:var(--violet-2);--c2:var(--violet)}
.launch-tile.green{--c1:var(--green-2);--c2:var(--green)}
.quest-strip-wrap{grid-area:quests}
.quest-strip-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:8px}
.quest-strip-head strong{font-size:14px}
.quest-strip-head span{font-size:11.5px;color:var(--muted)}
.quest-strip{display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 10px;margin:0 -4px;scrollbar-width:none}
.quest-chip{position:relative;flex:0 0 auto;min-width:190px;scroll-snap-align:start;display:flex;align-items:center;gap:10px;padding:10px 14px 14px;border-radius:18px;box-shadow:var(--raise-xs);overflow:hidden}
.quest-chip strong{display:block;font-size:13px}
.quest-chip small{display:block;font-size:11px;color:var(--muted)}
.quest-icon{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;color:var(--accent);box-shadow:var(--inset-sm);flex-shrink:0}
.quest-bar{position:absolute;left:14px;right:14px;bottom:6px;height:4px;border-radius:4px;background:var(--track);overflow:hidden}
.quest-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--gold-2),var(--gold))}
.quest-chip.done{box-shadow:var(--inset-sm)}
.quest-chip.done .quest-icon{background:var(--green-2);color:#fff;box-shadow:none;animation:pop .5s ease}
.quest-chip.done strong{color:var(--green-2)}
.home-offline{grid-area:off;padding:10px 14px;border-radius:16px;box-shadow:var(--inset-sm)}
.home-offline[data-state="ready"],.home-offline[data-state="idle"]{display:none}

/* ---------- Learn library ---------- */
.page-intro.compact h1{font-size:clamp(26px,2.6vw,34px)}
.learn-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:6px}
.search-pill{flex:1 1 260px;display:flex;align-items:center;gap:8px;padding:0 14px;border-radius:16px;box-shadow:var(--inset-sm);color:var(--muted)}
.search-pill input{flex:1;border:0;background:transparent;min-height:46px;font-size:16px;color:var(--ink);outline:none;min-width:0}
.search-pill:focus-within{outline:3px solid var(--gold);outline-offset:2px}
.lesson-tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px}
.map-tile{position:relative;border:0;background:var(--bg);border-radius:16px;padding:12px;box-shadow:var(--raise-xs);text-align:left;display:flex;flex-direction:column;gap:5px;min-height:92px;transition:transform .15s,box-shadow .15s;color:var(--ink)}
.map-tile:hover{transform:translateY(-2px)}
.map-tile:active{transform:scale(.97);box-shadow:var(--inset-sm)}
.map-tile.s3{background:linear-gradient(150deg,var(--gold-soft),var(--bg) 75%);box-shadow:var(--raise-xs),inset 0 0 0 2px color-mix(in srgb,var(--gold) 55%,transparent)}
.map-tile.read::after{content:"";position:absolute;top:12px;right:12px;width:8px;height:8px;border-radius:50%;background:var(--accent-2)}
.tile-stars{display:flex;gap:2px}
.tile-name{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.3;font-weight:700;font-size:13.5px}
.tile-sub{font-size:11px;color:var(--muted);margin-top:auto}

/* ---------- Flashcard setup ---------- */
.card-setup{display:flex;gap:30px;align-items:center;max-width:920px}
.card-setup-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:12px}
.card-setup-body h2,.card-setup-body p{margin:0}
.card-setup-body p{color:var(--muted)}
.card-stack{position:relative;width:120px;height:140px;flex-shrink:0;animation:float 4s ease-in-out infinite}
.card-stack span{position:absolute;inset:0;border-radius:20px;background:var(--bg);box-shadow:var(--raise-sm);display:grid;place-items:center;font-size:42px;color:var(--accent)}
.card-stack span:nth-child(1){transform:rotate(-10deg) translate(-8px,4px)}
.card-stack span:nth-child(2){transform:rotate(6deg) translate(8px,2px)}

/* ---------- Arena setup ---------- */
.mode-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin-bottom:18px}
.mode-card{--c1:var(--accent-2);--c2:var(--accent);text-align:left;border:1px solid var(--edge);background:var(--bg);border-radius:22px;padding:16px;box-shadow:var(--raise);display:flex;flex-direction:column;align-items:flex-start;gap:3px;transition:transform .18s,box-shadow .18s;color:var(--ink)}
.mode-card:hover{transform:translateY(-3px)}
.mode-card.active{box-shadow:var(--inset);transform:none}
.mode-card.active .mode-title{color:var(--c2)}
.mode-card.daily{--c1:var(--gold-2);--c2:var(--gold)}
.mode-card.rush{--c1:var(--coral-2);--c2:var(--coral)}
.mode-card.boss{--c1:var(--violet-2);--c2:var(--violet)}
.mode-card.exam{--c1:var(--green-2);--c2:var(--green)}
.mode-icon{width:44px;height:44px;border-radius:15px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--c1),var(--c2));box-shadow:var(--raise-xs);font-size:21px;margin-bottom:6px}
.mode-card:hover .mode-icon{animation:wiggle .5s ease}
.mode-title{font-size:15px;font-weight:800;line-height:1.25}
.mode-tag{font-size:11px;font-weight:800;color:var(--c2)}
.mode-status{margin-top:4px;font-size:11px;font-weight:700;color:var(--muted)}
.quiz-setup{padding:20px 22px}
.setup-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 26px;align-items:start}
.setup-col{display:flex;flex-direction:column;gap:10px;min-width:0}
.setup-col p{margin:0}
.setup-label{font-size:11px;font-weight:800;letter-spacing:1px;color:var(--muted);text-transform:uppercase}
.setup-note{display:flex;gap:8px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin:0 0 4px}
.setup-note .ico{color:var(--accent);margin-top:3px}
.setup-foot{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;margin-top:16px}
.pill.toggle{align-self:flex-start}
.quiz-availability{font-size:13px;color:var(--muted);margin:0}
.daily-streak{display:flex;gap:18px;align-items:center;padding:14px;border-radius:20px;box-shadow:var(--inset-sm)}
.daily-streak p{margin:6px 0 0}
.big-flame{width:96px;height:96px;border-radius:50%;box-shadow:var(--raise-sm);display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--faint);flex-shrink:0;line-height:1.1}
.big-flame .ico{font-size:24px}
.big-flame strong{font-size:26px;color:var(--ink)}
.big-flame small{font-size:10.5px;color:var(--muted)}
.big-flame.lit{color:var(--coral-2)}
.big-flame.lit .ico{fill:currentColor;animation:flicker 1.6s ease-in-out infinite}
.week-strip{display:flex;gap:6px}
.week-day{width:36px;height:50px;border-radius:12px;box-shadow:var(--inset-sm);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:var(--faint);font-size:15px}
.week-day small{font-size:10px;font-weight:700;color:var(--muted)}
.week-day.lit{box-shadow:var(--raise-xs);color:var(--coral-2)}
.week-day.lit .ico{fill:currentColor}
.week-day.today{outline:2px solid color-mix(in srgb,var(--accent) 60%,transparent);outline-offset:2px}
.done-note{display:flex;gap:8px;align-items:center;font-weight:700;color:var(--green-2);padding:10px 14px;border-radius:14px;box-shadow:var(--inset-sm)}
.rule-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.rule-list li{display:flex;gap:10px;align-items:flex-start;padding:12px;border-radius:16px;box-shadow:var(--inset-sm);font-size:13.5px}
.rule-list .ico{color:var(--coral-2);font-size:19px;margin-top:2px}
.carousel{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 6px 14px;margin:0 -6px;scrollbar-width:none;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain}
.carousel>*{flex:0 0 min(84%,320px);scroll-snap-align:center}
.boss-card{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:18px;border-radius:22px;box-shadow:var(--raise-sm);border:1px solid var(--edge);background:var(--bg)}
.boss-card h3{margin:2px 0 0;font-size:17px}
.boss-card p{font-size:12.5px;color:var(--muted);margin:0}
.boss-card .button{margin-top:auto;width:100%}
.boss-avatar{width:52px;height:52px;border-radius:17px;display:grid;place-items:center;font-size:25px;color:#fff;background:linear-gradient(145deg,var(--violet-2),var(--violet));box-shadow:var(--raise-xs)}
.boss-card.defeated .boss-avatar{background:linear-gradient(145deg,var(--gold-2),var(--gold))}
.boss-hp-mini{display:inline-flex;gap:6px;align-items:center;font-size:12px;font-weight:800;color:var(--violet-2);margin-bottom:6px}
.boss-card.defeated .boss-hp-mini{color:var(--green-2)}

/* ---------- Stage: immersive full-screen player ---------- */
.stage{position:fixed;inset:0;z-index:60;background:var(--bg);height:var(--vh);display:flex;justify-content:center;animation:stageIn .3s cubic-bezier(.2,.8,.2,1)}
.stage-inner{position:relative;width:100%;max-width:900px;height:100%;display:grid;grid-template-rows:auto minmax(0,1fr) auto;padding:max(10px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) max(10px,env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left));overflow:hidden}
.stage-top{display:flex;align-items:center;gap:12px;min-height:56px}
.stage-close,.round-btn{width:44px;height:44px;border:0;border-radius:14px;background:var(--bg);box-shadow:var(--raise-xs);display:grid;place-items:center;font-size:19px;color:var(--muted);flex-shrink:0;transition:transform .15s,box-shadow .15s}
.stage-close:active,.round-btn:active{box-shadow:var(--inset-sm);transform:scale(.95)}
.round-btn{width:52px;height:52px;border-radius:50%;font-size:22px}
.round-btn.primary{color:#fff;background:linear-gradient(145deg,var(--accent-2),var(--accent))}
.stage-mid{flex:1;min-width:0;display:flex;flex-direction:column;gap:5px}
.stage-sub{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stage-sub b{color:var(--ink)}
.stage-chips{display:flex;align-items:center;gap:8px;flex-shrink:0}
.stage-xp{padding:6px 10px;font-size:12.5px}
.stage-bar{height:8px;border-radius:8px;box-shadow:var(--inset-sm);overflow:hidden}
.stage-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--green-2),var(--accent-2));transition:width .4s}
.seg-bar,.story-segs{display:flex;gap:4px;height:8px}
.seg-bar span,.story-segs span{flex:1;border-radius:6px;box-shadow:var(--inset-sm);background:var(--track);transition:background .3s}
.seg-bar span.ok{background:var(--green-2);box-shadow:none}
.seg-bar span.bad{background:var(--red);box-shadow:none}
.seg-bar span.now{background:var(--accent-2);box-shadow:none;animation:pulse 1.4s ease-in-out infinite}
.seg-bar.exam span.picked{background:color-mix(in srgb,var(--accent-2) 55%,var(--track));box-shadow:none}
.story-segs span.past{background:var(--accent-2);box-shadow:none}
.story-segs span.now{background:linear-gradient(90deg,var(--accent-2) 50%,var(--track) 50%);background-size:200% 100%;background-position:100% 0;animation:segFill .5s ease forwards;box-shadow:none}
.stage-body{position:relative;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;touch-action:pan-y;padding:6px 4px 10px;scrollbar-width:thin}
.stage-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:8px}
.stage-foot.wrap{flex-wrap:wrap;justify-content:center}
.stage-foot.wrap .button{flex:1 1 140px}
.foot-hint{font-size:12px;color:var(--muted);text-align:center;flex:1}
.combo{display:inline-flex;align-items:center;gap:4px;font-weight:800;font-size:13px;padding:6px 10px;border-radius:30px;box-shadow:var(--inset-sm);color:var(--faint)}
.combo.hot{color:var(--coral-2);box-shadow:var(--raise-xs);animation:pop .35s ease}
.combo.hot .ico{fill:currentColor;animation:flicker 1s ease-in-out infinite}
.combo.blazing{color:#fff;background:linear-gradient(145deg,var(--coral-2),var(--coral))}
.lives{display:flex;align-items:center;gap:2px}
.heart{color:var(--red);font-size:20px;display:inline-flex}
.heart .ico{fill:currentColor}
.heart.lost{color:var(--faint);opacity:.45}
.heart.lost .ico{fill:none}
.timer-track{height:12px;border-radius:10px;box-shadow:var(--inset-sm);background:var(--track);padding:2px;overflow:hidden}
.timer-track span{display:block;height:100%;border-radius:8px;background:linear-gradient(90deg,var(--green-2),var(--accent-2));transition:width .2s linear}
.timer-track.low span{background:linear-gradient(90deg,var(--red),var(--coral-2));animation:pulse .8s ease-in-out infinite}
.boss-hp{display:flex;gap:4px;padding:3px;border-radius:10px;box-shadow:var(--inset-sm)}
.boss-hp span{flex:1;height:10px;border-radius:6px}
.boss-hp span.full{background:linear-gradient(90deg,var(--violet-2),var(--violet))}
.boss-hp.hit{animation:shake .45s ease}
.deck-count{font-size:12.5px;font-weight:800;color:var(--muted);white-space:nowrap}
.deck-count .got{color:var(--green-2)}
.deck-count .again{color:var(--gold)}
.step-row{gap:4px}
.step-row span{padding:2px 8px;border-radius:10px;font-size:11px;color:var(--faint)}
.step-row span.now{color:var(--accent);box-shadow:var(--raise-xs)}
.step-row span.done{color:var(--green-2)}

/* Quiz inside the stage */
.quiz-body{display:flex;flex-direction:column;gap:clamp(8px,1.6vh,16px);justify-content:center}
.quiz-body.shake{animation:shake .4s ease}
.q-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.q-prompt{font-size:clamp(17px,calc(.7vw + 1.7vh),26px);line-height:1.4;font-weight:800;letter-spacing:-.2px;margin:0}
.q-options{display:grid;gap:clamp(8px,1.4vh,14px)}
.q-option{position:relative;display:flex;align-items:center;gap:12px;width:100%;text-align:left;border:1px solid var(--edge);border-radius:18px;padding:clamp(10px,1.6vh,16px) 14px;background:var(--bg);box-shadow:var(--raise-sm);font-size:clamp(14.5px,calc(.4vw + 1.35vh),18px);line-height:1.35;color:var(--ink);transition:transform .15s,box-shadow .15s,background .2s;animation:rise .35s cubic-bezier(.2,.8,.2,1) backwards}
.q-option:nth-child(2){animation-delay:.04s}.q-option:nth-child(3){animation-delay:.08s}.q-option:nth-child(4){animation-delay:.12s}
.q-option:hover:not([aria-disabled]){transform:translateY(-2px)}
.q-option:active:not([aria-disabled]){transform:scale(.98);box-shadow:var(--inset-sm)}
.q-option[aria-disabled]{cursor:default}
.q-letter{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;flex-shrink:0;box-shadow:var(--inset-sm);font-weight:800;color:var(--accent);font-size:14px}
.q-text{flex:1}
.q-mark{display:inline-flex;font-size:22px}
.q-option.is-correct{background:var(--ok-bg);box-shadow:var(--inset-sm),inset 0 0 0 2px var(--green-2);animation:glow 1.2s ease}
.q-option.is-correct .q-letter{background:var(--green-2);color:#fff;box-shadow:none}
.q-option.is-correct .q-mark{color:var(--green-2)}
.q-option.is-wrong{background:var(--bad-bg);box-shadow:var(--inset-sm),inset 0 0 0 2px var(--red)}
.q-option.is-wrong .q-letter{background:var(--red);color:#fff;box-shadow:none}
.q-option.is-wrong .q-mark{color:var(--red)}
.q-option.is-dim{opacity:.5;box-shadow:var(--raise-xs)}
.q-option.is-picked{box-shadow:var(--inset),inset 0 0 0 2px var(--accent-2);color:var(--accent)}
.q-option.is-picked .q-letter{background:linear-gradient(145deg,var(--accent-2),var(--accent));color:var(--on-accent);box-shadow:none;animation:pop .3s ease}
.q-hint{font-size:12.5px;color:var(--muted);text-align:center;margin:0}
.quiz-body.answered{justify-content:flex-start;padding-bottom:calc(var(--sheet-h,48%) + 8px)}
.quiz-body.answered .q-meta{display:none}
.quiz-body.answered .q-prompt{font-size:clamp(15px,calc(.5vw + 1.3vh),20px);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.quiz-body.answered .q-option{padding:8px 12px;font-size:clamp(13px,1.6vh,16px);animation:none}
.quiz-body.answered .q-letter{width:28px;height:28px}
.sheet{position:absolute;left:0;right:0;bottom:0;z-index:5;display:flex;flex-direction:column;gap:8px;max-height:54%;padding:16px max(18px,env(safe-area-inset-right)) max(14px,env(safe-area-inset-bottom)) max(18px,env(safe-area-inset-left));border-radius:26px 26px 0 0;background:var(--bg);box-shadow:0 -14px 34px -10px rgba(0,0,0,.28);border-top:4px solid var(--green-2);animation:sheetUp .38s cubic-bezier(.2,.9,.3,1.05);touch-action:pan-y}
.sheet.bad{border-top-color:var(--red)}
.sheet.expanded{max-height:88%}
.sheet.mini{max-height:none}
.sheet-head{display:flex;align-items:center;gap:12px}
.sheet-head>div{flex:1;min-width:0}
.sheet-head strong{display:block;font-size:18px;line-height:1.25}
.sheet-icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;font-size:22px;color:#fff;background:linear-gradient(145deg,var(--green-2),var(--green));flex-shrink:0;animation:pop .4s ease}
.sheet.bad .sheet-icon{background:linear-gradient(145deg,#f27d90,var(--red))}
.gain-line{display:block;font-size:12.5px;color:var(--muted)}
.gain-line b{color:var(--accent)}
.gain-line .ico{color:var(--gold)}
.sheet-scroll{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;font-size:14.5px;padding-right:4px}
.sheet-scroll p{margin:0 0 8px}
.sheet-answer{padding:8px 12px;border-radius:12px;background:var(--ok-bg)}
.sheet-take{display:flex;gap:8px;align-items:flex-start;padding:8px 12px;border-radius:12px;background:linear-gradient(135deg,color-mix(in srgb,var(--gold-2) 20%,var(--bg)),var(--bg))}
.sheet-take .ico{color:var(--gold);margin-top:3px}
.sheet-note{display:flex;gap:8px;align-items:center;font-weight:700;color:var(--red)}
.sheet-note.hit{color:var(--violet-2)}
.sheet-note.retry{color:var(--gold)}
.sheet-more h4{font-size:12px;letter-spacing:1px;text-transform:uppercase;color:var(--accent);margin:12px 0 8px}
.sheet-actions{display:flex;gap:10px}
.sheet-actions .button.big{flex:1}
.swipe-hint{font-size:11.5px;color:var(--faint);text-align:center;margin:0}
.swipe-hint.center{margin-top:-4px}
.choice-reasons{display:grid;gap:8px;padding:0;list-style:none;margin:0}
.choice-reasons li{padding:10px 12px;border-radius:14px;box-shadow:var(--raise-xs);font-size:13.5px}
.choice-reasons li.right{box-shadow:var(--raise-xs),inset 0 0 0 2px color-mix(in srgb,var(--green-2) 60%,transparent)}
.choice-reasons strong{display:block}
.choice-reasons p{margin:4px 0 0;color:var(--muted)}
.answer-tag{font-size:11px;color:var(--accent);font-weight:800}

/* Lesson stories */
.story-body{display:flex;align-items:center;justify-content:center;touch-action:pan-y;user-select:none;-webkit-user-select:none;cursor:pointer}
.slide{position:relative;z-index:2;width:100%;max-width:680px;max-height:100%;overflow-y:auto;display:flex;flex-direction:column;align-items:center;text-align:center;gap:clamp(10px,2vh,18px);padding:clamp(18px,4vh,40px) clamp(16px,4vw,40px);border-radius:30px;background:var(--bg);box-shadow:var(--raise);border:1px solid var(--edge);pointer-events:auto}
.slide.from-right{animation:slideInR .38s cubic-bezier(.2,.8,.2,1)}
.slide.from-left{animation:slideInL .38s cubic-bezier(.2,.8,.2,1)}
.slide.cover{background:linear-gradient(160deg,color-mix(in srgb,var(--accent-2) 14%,var(--bg)),var(--bg) 65%)}
.slide.done{background:linear-gradient(160deg,color-mix(in srgb,var(--gold-2) 18%,var(--bg)),var(--bg) 65%)}
.slide-tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:800;letter-spacing:.4px;color:var(--accent);padding:6px 12px;border-radius:20px;box-shadow:var(--inset-sm)}
.slide-title{font-size:clamp(28px,calc(2.4vw + 2vh),46px);line-height:1.12;letter-spacing:-1px;margin:0}
.slide-title.small{font-size:clamp(22px,3vh,30px)}
.slide-big{font-size:clamp(19px,calc(1.1vw + 1.8vh),30px);line-height:1.4;font-weight:700;margin:0}
.slide-small{font-size:14px;color:var(--muted);margin:0}
.slide-hint{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--accent);margin:0;animation:nudgeX 1.6s ease-in-out infinite}
.slide-stars .star .ico{width:24px;height:24px}
.slide-done-badge{width:74px;height:74px;border-radius:24px;display:grid;place-items:center;font-size:36px;color:#fff;background:linear-gradient(145deg,var(--green-2),var(--green));box-shadow:var(--raise-sm);animation:pop .5s ease}
.slide-actions{display:flex;flex-direction:column;gap:10px;width:100%;max-width:380px}
.slide .sources{font-size:11.5px;text-align:left;width:100%;max-width:480px}
.sources{font-size:12px;padding-top:10px;border-top:1px solid color-mix(in srgb,var(--sd) 60%,transparent)}
.sources a{display:block;overflow-wrap:anywhere;margin:4px 0}
.tap-zone{position:absolute;top:0;bottom:0;z-index:1}
.tap-zone.prev{left:0;width:30%}
.tap-zone.next{right:0;width:70%}

/* Flashcards inside the stage */
.cards-body{display:flex;padding:8px 6px 6px}
.deck-area{position:relative;flex:1;display:flex;min-height:0}
.deck-ghosts span{position:absolute;inset:0;border-radius:30px;background:var(--bg);box-shadow:var(--raise-sm);border:1px solid var(--edge)}
.deck-ghosts span:nth-child(1){transform:translateY(12px) scale(.94);opacity:.55}
.deck-ghosts span:nth-child(2){transform:translateY(6px) scale(.97);opacity:.8}
.deck-ghosts span:only-child{transform:translateY(7px) scale(.96);opacity:.75}
.flashcard{--got:0;--again:0;position:relative;flex:1;display:flex;min-height:0;perspective:1600px;cursor:pointer;border-radius:30px;user-select:none;-webkit-user-select:none;transition:transform .32s cubic-bezier(.2,.8,.2,1),opacity .32s}
.flashcard *{touch-action:pan-y}
.flashcard.enter{animation:dealIn .45s cubic-bezier(.2,.9,.3,1.15)}
.flashcard.dragging{transition:none;cursor:grabbing}
.flashcard.nudge{animation:shake .4s ease}
.flashcard.fly-right{transform:translateX(130%) rotate(16deg)!important;opacity:0}
.flashcard.fly-left{transform:translateX(-130%) rotate(-16deg)!important;opacity:0}
.flashcard:focus-visible{outline:none}
.flashcard:focus-visible .flash-face{outline:2px solid color-mix(in srgb,var(--accent) 55%,transparent);outline-offset:4px}
.flash-inner{flex:1;display:grid;transform-style:preserve-3d;transition:transform .7s cubic-bezier(.3,1.35,.45,1)}
.flashcard.flipped .flash-inner{transform:rotateY(180deg)}
.flash-face{position:relative;grid-area:1/1;min-height:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:30px;background:var(--bg);box-shadow:var(--raise);border:1px solid var(--edge);padding:clamp(18px,3.5vh,34px) clamp(16px,3.5vw,36px);display:flex;flex-direction:column;justify-content:center;gap:clamp(8px,1.6vh,14px);overflow-y:auto;overflow-x:clip}
.flash-face.front{align-items:center;text-align:center}
.flash-face.front h2{font-size:clamp(26px,calc(2vw + 2vh),42px);margin:0;letter-spacing:-.6px;line-height:1.15}
.flash-face.back{transform:rotateY(180deg);background:linear-gradient(160deg,color-mix(in srgb,var(--accent-2) 9%,var(--bg)),var(--bg) 55%)}
.flash-hint{color:var(--muted);margin:0}
.known-badge{position:absolute;top:14px;right:16px;display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:800;color:var(--gold);padding:3px 9px;border-radius:12px;box-shadow:var(--inset-sm)}
.known-badge.new{color:var(--accent)}
.known-badge .ico{fill:currentColor}
.face-tag{display:inline-flex;align-self:flex-start;align-items:center;gap:6px;font-size:12px;font-weight:800;color:var(--accent);padding:6px 12px;border-radius:20px;box-shadow:var(--inset-sm)}
.flash-face.front .face-tag{align-self:center}
.face-tag.ok{color:var(--green-2)}
.face-block{text-align:left;padding:10px 14px;border-radius:16px;box-shadow:var(--inset-sm);width:100%}
.face-block p{margin:2px 0 0;font-size:clamp(14px,1.8vh,16px)}
.face-block ul{margin:4px 0 0;padding-left:20px;font-size:14px}
.face-label{display:flex;align-items:center;gap:6px;font-size:11px;font-weight:800;letter-spacing:1px;text-transform:uppercase;color:var(--accent)}
.flash-what{font-size:clamp(16px,calc(.6vw + 1.8vh),21px)!important;font-weight:700;line-height:1.4}
.back-title{font-size:clamp(24px,3.4vh,34px);margin:0}
.stamp{position:absolute;top:50%;left:50%;padding:10px 20px;border:4px solid currentColor;border-radius:16px;font-weight:900;font-size:26px;letter-spacing:2px;white-space:nowrap;pointer-events:none;opacity:0;background:color-mix(in srgb,var(--bg) 85%,transparent);box-shadow:var(--raise-sm);z-index:2}
.stamp.got{color:var(--green-2);transform:translate(-50%,-50%) rotate(-10deg) scale(calc(.7 + var(--got) * .3));opacity:var(--got)}
.stamp.again{color:var(--gold);transform:translate(-50%,-50%) rotate(10deg) scale(calc(.7 + var(--again) * .3));opacity:var(--again)}
.recall-ring{position:relative;width:88px;height:88px;display:grid;place-items:center;flex-shrink:0}
.recall-ring svg{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}
.recall-ring circle{fill:none;stroke:var(--track);stroke-width:4}
.recall-ring circle.fill{stroke:var(--accent-2);stroke-linecap:round;stroke-dasharray:119.4;stroke-dashoffset:119.4;animation:recall 5s linear forwards}
.recall-ring span{grid-area:1/1;font-size:12px;font-weight:800;color:var(--muted);transition:opacity .3s,transform .3s}
.recall-ring .ready-text{opacity:0;transform:scale(.6);color:var(--accent);text-align:center;line-height:1.2}
.flashcard.ready .recall-ring .think{opacity:0}
.flashcard.ready .recall-ring .ready-text{opacity:1;transform:none}
.flashcard.ready .recall-ring{animation:pulse 1.4s ease-in-out infinite}
.grade-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:12px;text-align:left;border:1px solid var(--edge);border-radius:18px;padding:12px 14px;min-height:60px;background:var(--bg);box-shadow:var(--raise-sm);font-size:22px;transition:transform .15s,box-shadow .15s;animation:rise .3s ease backwards}
.grade-btn+.grade-btn{animation-delay:.05s}
.grade-btn strong{display:block;font-size:15.5px}
.grade-btn small{display:block;font-size:11px;color:var(--muted);font-weight:600}
.grade-btn .ico{width:40px;height:40px;padding:9px;border-radius:13px;color:#fff;flex-shrink:0}
.grade-btn.again .ico{background:linear-gradient(145deg,var(--gold-2),var(--gold))}
.grade-btn.got .ico{background:linear-gradient(145deg,var(--green-2),var(--green))}
.grade-btn.again strong{color:var(--gold)}
.grade-btn.got strong{color:var(--green-2)}
.grade-btn:active{box-shadow:var(--inset-sm);transform:scale(.97)}

/* Summaries and Challenge results */
.summary-body,.results-body{display:flex;flex-direction:column;gap:16px;justify-content:flex-start}
.summary-top,.result-hero{display:flex;gap:20px;align-items:center}
.summary-top h2,.result-hero h2{font-size:clamp(20px,3vh,28px);margin:0 0 4px}
.summary-top p{color:var(--muted);margin:0 0 8px}
.summary-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.score-ring{--ring:var(--accent-2);width:clamp(96px,16vh,136px);height:clamp(96px,16vh,136px);border-radius:50%;flex-shrink:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:radial-gradient(closest-side,var(--bg) 78%,transparent 79%),conic-gradient(var(--ring) calc(var(--p)*1turn),var(--track) 0);box-shadow:var(--raise-sm);line-height:1.1;animation:ringFill 1.1s cubic-bezier(.2,.8,.2,1)}
.score-ring strong{font-size:clamp(22px,3.6vh,32px)}
.score-ring span{font-size:11px;color:var(--muted);font-weight:700}
.score-ring.win{--ring:var(--gold)}
.score-ring.lose{--ring:var(--red)}
.grade-stars{display:flex;gap:6px}
.grade-stars .star .ico{width:26px;height:26px}
.grade-stars .star.on{animation:pop .5s ease backwards}
.grade-stars .star:nth-child(2){animation-delay:.12s}
.grade-stars .star:nth-child(3){animation-delay:.24s}
.carousel-card{display:flex;flex-direction:column;gap:6px;padding:16px;border-radius:20px;box-shadow:var(--raise-sm);border:1px solid var(--edge);background:var(--bg);font-size:13.5px}
.carousel-card .difficulty{align-self:flex-start}
.carousel-card strong{font-size:14px;line-height:1.35}
.carousel-card p{margin:0}
.perfect{display:flex;gap:8px;align-items:center;font-weight:800;color:var(--gold);margin:0}
.result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.result-card{padding:14px 16px;border-radius:20px;box-shadow:var(--raise-sm);border:1px solid var(--edge);display:flex;flex-direction:column;gap:8px;min-width:0}
.result-card h3{display:flex;align-items:center;gap:6px;font-size:14px;margin:0;color:var(--accent)}
.meter-row{display:grid;grid-template-columns:minmax(0,1fr) 80px 40px;gap:8px;align-items:center;font-size:12.5px}
.meter-row>span:first-child{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.meter-row b{text-align:right}
.meter{height:8px;border-radius:8px;box-shadow:var(--inset-sm);overflow:hidden}
.meter>span{display:block;height:100%;border-radius:8px;background:var(--faint);animation:grow 1s cubic-bezier(.2,.8,.2,1);transform-origin:left}
.meter.good>span{background:var(--green-2)}
.meter.mid>span{background:var(--gold-2)}
.meter.low>span{background:var(--red)}
.result-card.improve ul{margin:0;padding-left:18px;font-size:13px}
.result-card.improve li{margin-bottom:4px}
.weak-topics{display:flex;flex-wrap:wrap;gap:6px}
.weak-topic{display:inline-flex;align-items:center;gap:6px;border:0;border-radius:12px;padding:6px 10px;min-height:36px;background:var(--bg);box-shadow:var(--raise-xs);font-size:12px;font-weight:700;color:var(--ink)}
.weak-topic small{color:var(--red);font-weight:800}
.result-tabs{flex-wrap:nowrap;gap:6px;overflow-x:auto;scrollbar-width:none}
.result-tabs .pill{min-height:34px;padding:5px 12px;font-size:12px;white-space:nowrap}
.results-body{gap:12px}
.results-body.answers{justify-content:center}
.review-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.review-head h3{margin:0}
.review-card{border-top:4px solid var(--green-2)}
.review-card.bad{border-top-color:var(--red)}
.review-flag{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:800;color:var(--green-2)}
.review-card.bad .review-flag{color:var(--red)}
.review-card .mine{padding:6px 10px;border-radius:10px}
.review-card .mine.ok{background:var(--ok-bg)}
.review-card .mine.bad{background:var(--bad-bg)}
.review-card .right{padding:6px 10px;border-radius:10px;background:var(--ok-bg)}
.review-card .why-mine{font-size:12.5px;color:var(--red)}
.review-row>*{flex-basis:min(88%,360px)}

/* ---------- Trophies ---------- */
.trophy-top{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:20px}
.rank-panel{display:grid;grid-template-columns:auto 1fr;gap:16px 22px;align-items:center}
.rank-panel p{color:var(--muted);margin:0}
.rank-ladder{grid-column:1/-1;list-style:none;margin:4px 0 0;padding:0;display:grid;gap:4px;max-height:300px;overflow-y:auto}
.rank-ladder li{display:grid;grid-template-columns:30px 1fr auto;gap:10px;align-items:center;padding:6px 12px;border-radius:12px;font-size:13px;color:var(--faint)}
.rank-ladder li span{width:26px;height:26px;border-radius:9px;display:grid;place-items:center;font-weight:800;font-size:12px;box-shadow:var(--inset-sm)}
.rank-ladder li small{font-size:11px}
.rank-ladder li.past{color:var(--muted)}
.rank-ladder li.past span{color:var(--accent)}
.rank-ladder li.current{color:var(--ink);font-weight:800;box-shadow:var(--raise-xs)}
.rank-ladder li.current span{background:linear-gradient(145deg,var(--accent-2),var(--accent));color:var(--on-accent);box-shadow:none}
.xp-breakdown{display:grid;gap:8px;margin-bottom:16px}
.xp-row{display:grid;grid-template-columns:minmax(140px,1.1fr) 1fr 46px;gap:12px;align-items:center;font-size:13px}
.xp-row strong{text-align:right;color:var(--accent)}
.diff-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:12px}
.achievement-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.achievement{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:20px;box-shadow:var(--inset-sm);color:var(--muted)}
.achievement strong{display:block;color:var(--ink);font-size:14.5px}
.achievement>div{flex:1;min-width:0}
.achievement>div>span{display:block;font-size:12.5px;margin-bottom:6px}
.ach-icon{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;font-size:21px;box-shadow:var(--raise-xs);color:var(--faint);flex-shrink:0}
.achievement.unlocked{box-shadow:var(--raise-sm)}
.achievement.unlocked .ach-icon{color:#fff;background:linear-gradient(145deg,var(--gold-2),var(--gold))}
.ach-done{font-size:11px!important;font-weight:800;color:var(--gold);letter-spacing:.6px;text-transform:uppercase}
.ach-progress{font-size:11px!important;font-weight:700;margin:4px 0 0!important}
.legend-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:8px;margin-bottom:10px}
.legend-row{display:grid;grid-template-columns:24px 1fr auto;gap:10px;align-items:center;font-size:13.5px;padding:8px 12px;border-radius:12px;box-shadow:var(--inset-sm)}
.legend-row .ico{color:var(--accent);font-size:18px}
.legend-row strong{color:var(--accent);font-size:12.5px;text-align:right}
.backup-panel{display:flex;flex-direction:column;gap:12px}
.backup-panel p{margin:0;font-size:14px;color:var(--muted)}
#backupStatus:empty{display:none}

/* ---------- Photos and dialogs ---------- */
.filter-bar{display:flex;gap:14px;align-items:end;flex-wrap:wrap;border-radius:20px;padding:14px;margin-bottom:16px;box-shadow:var(--raise-sm)}
.photo-count{font-size:12px;color:var(--muted);align-self:center}
.photo-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.photo-card{background:var(--bg);border-radius:20px;overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--raise-sm)}
.photo-open{border:0;padding:10px;display:block;width:100%;background:var(--bg);box-shadow:var(--inset-sm);border-radius:20px 20px 0 0}
.photo-open img{display:block;width:100%;height:220px;object-fit:contain}
.photo-caption{padding:10px 12px;font-size:12px;overflow-wrap:anywhere;color:var(--muted)}
.photo-caption strong{display:block;font-size:13px;line-height:1.45;margin-bottom:2px;color:var(--ink)}
dialog{color:var(--ink)}
.photo-dialog,.help-dialog{border:0;border-radius:28px;background:var(--bg);box-shadow:var(--raise)}
.photo-dialog{width:min(96vw,1100px);max-height:96vh;padding:52px 12px 14px;touch-action:pan-y;user-select:none}
.photo-dialog::backdrop,.help-dialog::backdrop{background:rgba(8,18,26,.62);backdrop-filter:blur(4px)}
.photo-dialog img{display:block;max-width:100%;max-height:78vh;margin:auto;object-fit:contain;pointer-events:none}
.photo-nav{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border:0;border-radius:50%;background:color-mix(in srgb,var(--bg) 85%,transparent);box-shadow:var(--raise-xs);display:grid;place-items:center;font-size:20px;color:var(--ink);z-index:2}
.photo-nav.prev{left:10px}
.photo-nav.next{right:10px}
.dialog-close{position:absolute;top:10px;right:10px;border:0;background:var(--bg);border-radius:14px;width:44px;font-size:24px;box-shadow:var(--raise-xs);color:var(--muted);z-index:3}
.dialog-caption{font-size:12px;text-align:center;padding-top:10px;color:var(--muted)}
.help-dialog{width:min(720px,94vw);max-height:92vh;padding:30px 30px 24px;overflow:auto}
.help-dialog[open]{animation:rise .3s ease}
.help-dialog h2{font-size:26px}
.help-steps{list-style:none;padding:0;margin:8px 0 16px;display:grid;gap:10px}
.help-steps li{display:flex;gap:14px;align-items:flex-start;padding:12px 14px;border-radius:18px;box-shadow:var(--inset-sm)}
.help-steps p{margin:2px 0 0;font-size:13.5px;color:var(--muted)}
.help-steps strong{color:var(--ink)}
.step-icon{position:relative;width:44px;height:44px;border-radius:15px;display:grid;place-items:center;font-size:20px;color:#fff;background:linear-gradient(145deg,var(--accent-2),var(--accent));box-shadow:var(--raise-xs);flex-shrink:0}
.step-icon small{position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;background:var(--bg);color:var(--accent);font-size:11px;font-weight:800;display:grid;place-items:center;box-shadow:var(--raise-xs)}

/* ---------- Install sheet ---------- */
.install{position:fixed;inset:0;z-index:88;display:flex;align-items:flex-end;justify-content:center;background:rgba(8,18,26,.5);backdrop-filter:blur(3px);animation:fadeIn .25s ease}
.install-card{width:min(520px,100%);margin:0 auto;padding:22px 22px max(20px,env(safe-area-inset-bottom));border-radius:28px 28px 0 0;background:var(--bg);box-shadow:0 -18px 40px rgba(0,0,0,.3);animation:sheetUp .4s cubic-bezier(.2,.9,.3,1.05);display:flex;flex-direction:column;gap:14px}
.install-head{display:flex;gap:14px;align-items:center}
.install-head img{border-radius:16px;box-shadow:var(--raise-xs)}
.install-head h2{font-size:19px;margin:0 0 4px}
.install-head p{font-size:13.5px;color:var(--muted);margin:0}
.install-steps{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.install-steps li{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:16px;box-shadow:var(--inset-sm);font-size:14.5px}
.step-badge{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;flex-shrink:0;font-size:19px;color:#fff;background:linear-gradient(145deg,var(--blue-2),var(--blue))}
.install-actions{display:flex;justify-content:center}
@media(min-width:781px){.install{align-items:center}.install-card{border-radius:28px}}
.install-top{display:inline-flex;align-items:center;gap:7px;border:0;border-radius:14px;padding:0 14px;min-height:44px;font-weight:800;font-size:13.5px;color:#fff;background:linear-gradient(145deg,var(--accent-2),var(--accent));box-shadow:var(--raise-xs);white-space:nowrap;animation:breathe 2.6s ease-in-out 2s 3}
.install-top .ico{font-size:17px}
.install-top:active{transform:scale(.96)}
.install-banner{grid-area:install;display:flex;align-items:center;gap:14px;text-align:left;border:1px dashed color-mix(in srgb,var(--accent) 45%,transparent);border-radius:20px;padding:12px 16px;background:var(--bg);box-shadow:var(--raise-xs);color:var(--ink)}
.install-banner>span:nth-child(2){flex:1;min-width:0}
.install-banner strong{display:block;font-size:14.5px}
.install-banner small{display:block;font-size:12px;color:var(--muted)}
.install-banner:active{box-shadow:var(--inset-sm);transform:scale(.99)}
.install-banner-icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;font-size:20px;color:#fff;background:linear-gradient(145deg,var(--accent-2),var(--accent));flex-shrink:0}
.install-tabs{justify-content:center}
.install-tip{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);margin:0;padding:10px 12px;border-radius:14px;background:var(--warn-bg)}
.install-tip .ico{color:var(--gold);margin-top:2px}
.install-steps .ico.inline{width:1em;height:1em;vertical-align:-.12em;color:var(--blue)}
.small-note.center{text-align:center;margin:0}
.install-card{position:relative}
.install-card .dialog-close{top:12px;right:12px}
.install-head{padding-right:44px}
.install.point-top::before{content:"91  Share";position:fixed;top:8px;right:96px;padding:6px 12px;border-radius:12px;font-weight:800;font-size:14px;color:#fff;background:var(--blue);box-shadow:0 6px 18px rgba(0,0,0,.25);animation:bob 1s ease-in-out infinite;z-index:2}


/* ---------- Tour, level-up, toasts, effects ---------- */
.tour{position:fixed;inset:0;z-index:90}
.tour.closing{animation:fadeOut .25s ease forwards}
.tour-spot{position:fixed;border-radius:20px;box-shadow:0 0 0 9999px rgba(8,18,26,.66),0 0 0 3px var(--accent-2),0 0 26px 6px color-mix(in srgb,var(--accent-2) 55%,transparent);transition:top .45s cubic-bezier(.2,.8,.2,1),left .45s cubic-bezier(.2,.8,.2,1),width .45s cubic-bezier(.2,.8,.2,1),height .45s cubic-bezier(.2,.8,.2,1);pointer-events:none}
.tour-spot.none{box-shadow:0 0 0 9999px rgba(8,18,26,.66)}
.tour-card{position:fixed;width:min(370px,calc(100vw - 24px));padding:18px 20px;border-radius:24px;background:var(--bg);box-shadow:0 22px 50px rgba(0,0,0,.35);border:1px solid var(--edge);transition:top .45s cubic-bezier(.2,.8,.2,1),left .45s cubic-bezier(.2,.8,.2,1)}
.tour-card.pop{animation:tourPop .4s cubic-bezier(.2,.9,.3,1.3)}
.tour-card[data-side="center"]{width:min(430px,calc(100vw - 24px));text-align:center}
.tour-card[data-side="center"] .tour-head{justify-content:center}
.tour-card::before{content:"";position:absolute;width:16px;height:16px;background:var(--bg);transform:rotate(45deg);border:1px solid var(--edge)}
.tour-card[data-side="bottom"]::before{top:-9px;left:calc(var(--arrow) - 8px);border-right:0;border-bottom:0}
.tour-card[data-side="top"]::before{bottom:-9px;left:calc(var(--arrow) - 8px);border-left:0;border-top:0}
.tour-card[data-side="right"]::before{left:-9px;top:calc(var(--arrow-y) - 8px);border-top:0;border-right:0}
.tour-card[data-side="left"]::before{right:-9px;top:calc(var(--arrow-y) - 8px);border-bottom:0;border-left:0}
.tour-card[data-side="center"]::before,.tour-card[data-side="over"]::before{display:none}
.tour-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.tour-icon{width:38px;height:38px;border-radius:13px;display:grid;place-items:center;font-size:18px;color:#fff;background:linear-gradient(145deg,var(--accent-2),var(--accent))}
.tour-count{font-size:11px;font-weight:800;letter-spacing:1px;color:var(--muted)}
.tour-skip{margin-left:auto;border:0;background:transparent;color:var(--muted);font-size:12.5px;font-weight:700;min-height:40px;padding:4px 10px;border-radius:10px}
.tour-card[data-side="center"] .tour-skip{position:absolute;top:12px;right:12px}
.tour-card h2{font-size:19px;margin-bottom:4px}
.tour-card p{font-size:14px;color:var(--muted);margin-bottom:12px}
.tour-dots{display:flex;gap:5px;margin-bottom:12px;flex-wrap:wrap}
.tour-card[data-side="center"] .tour-dots{justify-content:center}
.tour-dots span{width:7px;height:7px;border-radius:50%;box-shadow:var(--inset-sm);transition:width .3s}
.tour-dots span.past{background:color-mix(in srgb,var(--accent-2) 45%,transparent)}
.tour-dots span.on{width:22px;border-radius:6px;background:var(--accent-2)}
.tour-actions{display:flex;justify-content:space-between;gap:10px}
.levelup{position:fixed;inset:0;z-index:85;display:grid;place-items:center;background:rgba(8,18,26,.55);backdrop-filter:blur(5px);animation:fadeIn .25s ease}
.levelup.closing{animation:fadeOut .25s ease forwards}
.levelup-card{position:relative;width:min(370px,calc(100vw - 32px));padding:30px 24px 24px;border-radius:30px;background:var(--bg);box-shadow:0 30px 70px rgba(0,0,0,.4);text-align:center;display:flex;flex-direction:column;align-items:center;gap:6px;overflow:hidden;isolation:isolate;animation:tourPop .55s cubic-bezier(.2,.9,.3,1.4)}
.levelup-card .eyebrow{font-size:14px;letter-spacing:3px;color:var(--gold)}
.levelup-card h2{font-size:25px;margin:6px 0 0}
.levelup-card p{color:var(--muted);font-size:14px}
.levelup-rays{position:absolute;inset:-50%;background:repeating-conic-gradient(color-mix(in srgb,var(--gold-2) 18%,transparent) 0 10deg,transparent 10deg 20deg);animation:spin 14s linear infinite;z-index:-1}
.toast-stack{position:fixed;bottom:22px;right:22px;z-index:95;display:flex;flex-direction:column;gap:10px;width:min(340px,calc(100vw - 24px));pointer-events:none}
.toast-stack:has(.toast){pointer-events:none}
body.immersive .toast-stack{top:calc(64px + env(safe-area-inset-top));bottom:auto;left:50%;right:auto;transform:translateX(-50%);width:min(380px,calc(100vw - 24px))}
.toast{display:flex;gap:12px;align-items:center;padding:12px 14px;border-radius:18px;background:var(--bg);box-shadow:var(--raise);border:1px solid var(--edge);animation:toastIn .45s cubic-bezier(.2,.9,.3,1.3)}
.toast.out{animation:toastOut .45s ease forwards}
.toast strong{display:block;font-size:13.5px;line-height:1.3}
.toast span:not(.toast-icon){display:block;font-size:12px;color:var(--muted)}
.toast-icon{width:38px;height:38px;border-radius:13px;display:grid;place-items:center;font-size:18px;color:#fff;background:linear-gradient(145deg,var(--accent-2),var(--accent));flex-shrink:0}
.toast.quest .toast-icon{background:linear-gradient(145deg,var(--green-2),var(--green))}
.toast.trophy .toast-icon{background:linear-gradient(145deg,var(--gold-2),var(--gold))}
.toast.level .toast-icon{background:linear-gradient(145deg,var(--violet-2),var(--violet))}
.xp-float{position:fixed;top:calc(80px + var(--i,0) * 34px);right:30px;z-index:96;font-weight:900;font-size:24px;color:var(--accent);text-shadow:0 2px 0 var(--sl);pointer-events:none;animation:floatUp 1.4s ease forwards}
.xp-float.negative{color:var(--muted)}
.confetti{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:94}
.stagger>*{animation:rise .45s cubic-bezier(.2,.8,.2,1) backwards}
.stagger>*:nth-child(2){animation-delay:.04s}.stagger>*:nth-child(3){animation-delay:.08s}.stagger>*:nth-child(4){animation-delay:.12s}
.stagger>*:nth-child(5){animation-delay:.16s}.stagger>*:nth-child(6){animation-delay:.2s}.stagger>*:nth-child(n+7){animation-delay:.24s}

@property --p{syntax:"<number>";inherits:true;initial-value:0}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes pop{0%{transform:scale(.4);opacity:0}70%{transform:scale(1.15)}100%{transform:scale(1);opacity:1}}
@keyframes bump{0%,100%{transform:scale(1)}40%{transform:scale(1.08)}}
@keyframes shake{0%,100%{transform:translateX(0)}20%{transform:translateX(-8px)}40%{transform:translateX(7px)}60%{transform:translateX(-5px)}80%{transform:translateX(3px)}}
@keyframes flicker{0%,100%{transform:scale(1) rotate(0)}50%{transform:scale(1.12) rotate(-4deg)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.6}}
@keyframes floatUp{0%{opacity:0;transform:translateY(12px) scale(.8)}20%{opacity:1;transform:translateY(0) scale(1.1)}100%{opacity:0;transform:translateY(-46px) scale(1)}}
@keyframes toastIn{from{opacity:0;transform:translateY(30px) scale(.95)}to{opacity:1;transform:none}}
@keyframes toastOut{to{opacity:0;transform:translateX(40px)}}
@keyframes stageIn{from{opacity:0;transform:scale(.98)}to{opacity:1;transform:none}}
@keyframes sheetUp{from{transform:translateY(100%)}to{transform:none}}
@keyframes slideInR{from{opacity:0;transform:translateX(48px) scale(.97)}to{opacity:1;transform:none}}
@keyframes slideInL{from{opacity:0;transform:translateX(-48px) scale(.97)}to{opacity:1;transform:none}}
@keyframes segFill{to{background-position:0 0}}
@keyframes nudgeX{0%,100%{transform:none}50%{transform:translateX(5px)}}
@keyframes dealIn{from{opacity:0;transform:translateY(26px) scale(.93)}to{opacity:1;transform:none}}
@keyframes recall{to{stroke-dashoffset:0}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes bob{0%,100%{transform:translateY(-2px)}50%{transform:translateY(2px)}}
@keyframes fadeIn{from{opacity:0}}
@keyframes fadeOut{to{opacity:0}}
@keyframes tourPop{from{opacity:0;transform:translateY(10px) scale(.94)}to{opacity:1;transform:none}}
@keyframes spin{to{transform:rotate(1turn)}}
@keyframes ringFill{from{--p:0}}
@keyframes grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes breathe{0%,100%{transform:none}50%{transform:scale(1.06)}}
@keyframes wiggle{0%,100%{transform:none}30%{transform:rotate(-9deg) scale(1.06)}60%{transform:rotate(6deg)}}
@keyframes glow{0%{box-shadow:var(--inset-sm),inset 0 0 0 2px var(--green-2),0 0 0 0 color-mix(in srgb,var(--green-2) 60%,transparent)}100%{box-shadow:var(--inset-sm),inset 0 0 0 2px var(--green-2),0 0 0 14px transparent}}

/* ---------- Responsive ---------- */
@media(max-width:1200px){
  .launch-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .launch-tile{min-height:96px}
  .trophy-top,.result-grid{grid-template-columns:minmax(0,1fr)}
  .photo-grid{grid-template-columns:repeat(3,1fr)}
}
/* Tablets and iPads in portrait: slim icon rail. */
@media(min-width:781px) and (max-width:1100px){
  .app-shell{grid-template-columns:96px minmax(0,1fr)}
  .sidebar{width:96px;padding:max(18px,env(safe-area-inset-top)) 8px 18px max(8px,env(safe-area-inset-left));align-items:center;gap:16px}
  .brand>span:last-child,.player-info,.sidebar-bottom{display:none}
  .player-card{padding:8px}
  .nav-item{flex-direction:column;gap:4px;font-size:11.5px;padding:10px 4px;text-align:center;width:78px;justify-content:center}
  .nav-icon{font-size:22px;width:auto}
  main{padding:10px 24px 30px}.topbar{padding:0 24px}
  .launch{grid-template-columns:minmax(0,1fr);grid-template-areas:"focus" "hero" "next" "grid" "quests" "install" "off"}
  .mode-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
  .mode-card{padding:12px}.mode-status{display:none}
  .setup-grid{grid-template-columns:minmax(0,1fr)}
}
/* Phones: app layout with a bottom tab bar; Home fits one screen. */
@media(max-width:780px){
  .app-shell{display:block}
  .sidebar{position:static;width:auto;padding:0;box-shadow:none;display:contents}
  .brand,.player-card,.sidebar-bottom{display:none}
  .primary-nav{position:fixed;left:0;right:0;bottom:0;z-index:30;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:2px;padding:5px max(6px,env(safe-area-inset-right)) calc(5px + env(safe-area-inset-bottom)) max(6px,env(safe-area-inset-left));background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 -8px 20px -12px var(--sd);border-top:1px solid var(--edge)}
  .nav-item{flex-direction:column;justify-content:center;gap:2px;padding:6px 2px;min-height:52px;font-size:10.5px;font-weight:700;text-align:center;border-radius:14px}
  .nav-icon{font-size:21px;width:auto}
  .nav-item.active .nav-icon{animation:pop .35s ease}
  .main-column{width:100%;padding-bottom:calc(66px + env(safe-area-inset-bottom))}
  .topbar{height:56px;padding:max(0px,env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) 0 max(12px,env(safe-area-inset-left));box-sizing:content-box}
  .hud{margin-right:auto;gap:6px;min-width:0;overflow:hidden;padding:4px 2px}
  .hud-level{display:inline-flex}
  .hud-chip{padding:6px 9px;font-size:12px}
  .icon-button{width:40px;height:40px;min-height:40px;border-radius:12px;font-size:18px}
  main{padding:10px max(14px,env(safe-area-inset-right)) 18px max(14px,env(safe-area-inset-left))}
  .footer{display:none}
  .page-intro{margin:2px 0 12px}
  .page-intro.compact h1{font-size:25px;margin-bottom:2px}
  .page-intro>p{font-size:13.5px}
  .panel{padding:16px;border-radius:22px}
  .launch{grid-template-columns:minmax(0,1fr);grid-template-areas:"focus" "hero" "next" "grid" "quests" "install" "off";gap:12px}
  .install-top{width:40px;min-height:40px;padding:0;justify-content:center;border-radius:12px}
  .install-top-label,.hud-rank{display:none}
  .launch-hero{padding:14px 16px;gap:14px}
  .launch-hero .level-ring.big{--size:78px}.launch-hero .level-ring.big>span{font-size:26px;width:64px;height:64px}
  .launch-hero .level-ring small{display:none}
  .hero-title{font-size:20px;margin-bottom:6px}
  .hero-sub{margin:6px 0 8px;font-size:12.5px}
  .hero-chips{gap:6px}.chip-stat{padding:5px 9px;font-size:11.5px}
  .launch-next{padding:12px 14px;gap:12px}
  .launch-next-icon{width:44px;height:44px;font-size:20px;border-radius:14px}
  .launch-next-text strong{font-size:15px}
  .launch-next-text span{font-size:12px;-webkit-line-clamp:1}
  .launch-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  .launch-tile{min-height:0;padding:12px 10px;border-radius:18px;align-items:center;text-align:center}
  .tile-icon{width:38px;height:38px;font-size:18px;border-radius:13px;margin-bottom:2px}
  .launch-tile strong{font-size:12.5px}
  .launch-tile small{font-size:10.5px}
  .quest-chip{min-width:168px;padding:8px 12px 12px}
  .home-offline{padding:8px 12px}
  .home-offline[data-state="ready"],.home-offline[data-state="idle"]{display:none}
  .hero-chips .chip-stat:nth-child(3){display:none}
  .lesson-tiles{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .map-tile{min-height:84px;padding:10px}
  .card-setup{flex-direction:column;text-align:center;gap:14px}
  .card-setup .pill-row,.card-setup .button-row{justify-content:center}
  .card-setup .card-stack{width:96px;height:110px}
  .mode-grid{display:flex;overflow-x:auto;gap:10px;padding:4px 4px 10px;margin:0 -4px 8px;scroll-snap-type:x mandatory;scrollbar-width:none}
  .mode-card{flex:0 0 118px;scroll-snap-align:start;padding:12px;align-items:center;text-align:center}
  .mode-status,.mode-tag{display:none}
  .mode-title{font-size:13.5px}
  .quiz-setup{padding:16px}
  .setup-grid{grid-template-columns:minmax(0,1fr);gap:12px}
  .setup-foot .button{flex:1}
  .rule-list{grid-template-columns:1fr 1fr;gap:8px}.rule-list li{padding:10px;font-size:12.5px}
  .daily-streak{flex-wrap:wrap;justify-content:center}
  .stage-inner{padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right))}
  .stage-top{gap:8px;min-height:50px}
  .stage-xp{display:none}
  .stage-chips .stage-xp{display:none}
  .sheet{max-height:58%}
  .stage-foot.wrap .button{flex:1 1 40%;min-height:44px;padding:8px 10px;font-size:13.5px}
  .result-hero .score-ring{width:96px;height:96px}
  .result-hero,.summary-top{gap:14px}
  .result-hero .summary-chips .chip-stat,.summary-top .chip-stat{font-size:11px}
  .meter-row{grid-template-columns:minmax(0,1fr) 64px 36px}
  .trophy-top{gap:14px}
  .rank-panel{grid-template-columns:1fr;justify-items:center;text-align:center}.rank-ladder{width:100%;text-align:left}
  .xp-row{grid-template-columns:1fr 1fr 40px}
  .legend-row{grid-template-columns:24px 1fr}.legend-row strong{grid-column:2;text-align:left}
  .diff-grid{gap:8px}.diff-grid .stat{padding:12px}
  .achievement-grid{grid-template-columns:1fr}
  .photo-grid{grid-template-columns:repeat(2,1fr);gap:10px}.photo-open img{height:160px}
  .field{flex-basis:100%}
  .xp-float{right:16px;top:calc(62px + var(--i,0) * 30px)}
  .toast-stack{bottom:calc(76px + env(safe-area-inset-bottom));right:12px;left:12px;width:auto}
  .help-dialog{padding:24px 16px 18px;width:calc(100vw - 16px);max-height:calc(var(--vh) - 24px)}
  .photo-dialog{padding:52px 4px 10px;width:100vw;max-width:100vw;border-radius:22px}
  .photo-nav{width:40px;height:40px}
}
@media(max-width:420px){.hud-rank{max-width:64px}}
@media(max-width:380px){
  .hero-chips,.launch-next-text span{display:none}
  .launch-tile strong{font-size:12px}
  .hud-rank{display:none}
  .nav-item{font-size:9.5px}
  .launch-tile small{display:none}
}
/* Short screens (small phones, landscape): trim Home so it still fits without scrolling. */
@media(max-width:780px) and (max-height:899px){.install-banner{display:none}}
@media(max-height:740px) and (max-width:780px){
  .launch{gap:10px}
  .hero-chips,.hero-sub{display:none}
  .hero-title{margin-bottom:8px}
  .launch-hero{padding:12px 14px}
  .launch-hero .level-ring.big{--size:60px}.launch-hero .level-ring.big>span{width:48px;height:48px;font-size:20px}
  .launch-next-text span{display:none}
  .launch-tile{padding:10px 6px}.launch-tile small{display:none}
  .tile-icon{width:34px;height:34px;font-size:16px}
  .focus-row .pill{min-height:34px;padding:6px 12px}
  .quest-strip-head span{display:none}
  .quest-chip{padding:6px 10px 10px}
}
@media(max-height:500px){
  .stage-top{min-height:44px}
  .sheet{max-height:70%}
  .slide{padding:14px 20px}
}
@media(hover:none) and (pointer:coarse){
  .button:hover:not(:disabled),.mode-card:hover,.map-tile:hover,.q-option:hover:not([aria-disabled]),.launch-tile:hover,.launch-next:hover{transform:none;filter:none}
  .mode-card:hover .mode-icon,.launch-tile:hover .tile-icon{animation:none}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
@media print{
  .sidebar,.topbar,.footer,.stage,.toast-stack,.confetti,.tour,.levelup,.install,.button,.pill-row,.chip-row{display:none!important}
  :root{--sd:transparent;--sl:transparent}
  .app-shell{display:block}main{padding:0}.view.active{display:block}
  .panel,.stat,.map-tile{box-shadow:none;border:1px solid #aaa}body{background:white;color:black;font-size:11pt}
}
/* Keep responsive cards constrained before laying out their horizontal filters. */
.card-setup-body{width:100%;max-width:100%}.card-setup-body>*{min-width:0;max-width:100%}.card-setup-body .chip-row{width:100%;margin:0;padding:8px 6px 12px;justify-content:flex-start}.card-setup-body .pill-row{gap:10px;padding-block:4px}.card-setup-body .button-row{gap:12px;padding-top:4px}.chip-btn{max-width:100%;white-space:normal;text-align:left;overflow-wrap:anywhere;line-height:1.4}.chip-btn small{flex-shrink:0}.pill{white-space:normal;line-height:1.4;overflow-wrap:anywhere}.search-pill{min-width:0}.map-tile,.stat,.mode-card{min-width:0}.tile-name{-webkit-line-clamp:unset;overflow:visible;overflow-wrap:anywhere}.tile-sub{overflow-wrap:anywhere}.learn-bar{gap:12px}.learn-bar .pill-row{gap:10px;padding-block:6px}.view .button-row{row-gap:12px}.profile-page .account-row{gap:16px}
/* ---------- App frame: one-row top bar, grouped sidebar, five-tab phone bar, More sheet ---------- */
.topbar{justify-content:flex-start}
.topbar .hud{margin-left:auto}
.topbar-brand{display:none;text-decoration:none;flex-shrink:0}
.topbar-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.install-top{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:14px;padding:0 14px;min-height:44px;background:var(--bg);box-shadow:var(--raise-xs);color:var(--accent);font-weight:800;font-size:13px}
.avatar-button{display:inline-flex;align-items:center;gap:8px;border:0;background:var(--bg);box-shadow:var(--raise-xs);border-radius:999px;padding:4px 14px 4px 4px;min-height:44px;font-weight:800;font-size:13px;color:var(--ink);transition:box-shadow .15s,color .15s}
.avatar-button:hover{box-shadow:var(--raise-sm)}
.avatar-button[aria-current="page"]{box-shadow:var(--inset-sm);color:var(--accent)}
.avatar-face{position:relative;display:grid}
.avatar-button.needs-verify .avatar-face::after{content:"";position:absolute;right:-1px;top:-1px;width:11px;height:11px;border-radius:50%;background:var(--coral-2);box-shadow:0 0 0 2px var(--bg)}
.avatar-label{max-width:110px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.avatar-axo,.avatar-img{display:inline-grid;place-items:center;border-radius:50%;overflow:hidden;flex-shrink:0;background:var(--avatar-bg,var(--track))}
.avatar-img{object-fit:cover}
.avatar-axo .axo{width:92%;height:auto;transform:translateY(5%)}
.face{width:36px;height:36px}
.league-avatar{width:44px;height:44px}
.profile-avatar{width:64px;height:64px}
.profile-avatar.xl{width:96px;height:96px;box-shadow:var(--raise-sm)}
.primary-nav{gap:6px}
.nav-label{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-group{display:block;font-size:10.5px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;color:var(--faint);padding:14px 14px 2px}
.nav-more{display:none}
.view.active{animation:viewIn .28s cubic-bezier(.2,.8,.2,1)}
@keyframes viewIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.more-sheet{position:fixed;inset:0;z-index:89;background:rgba(14,20,28,.34);display:flex;align-items:flex-end;justify-content:center;animation:fadeIn .18s ease}
.more-panel{width:min(560px,100%);max-height:calc(var(--vh) - 40px);overflow:auto;background:var(--bg);border-radius:26px 26px 0 0;padding:10px max(18px,env(safe-area-inset-right)) calc(18px + env(safe-area-inset-bottom)) max(18px,env(safe-area-inset-left));box-shadow:0 -14px 40px -14px rgba(0,0,0,.4);animation:sheetUp .28s cubic-bezier(.2,.9,.3,1)}
.more-sheet.closing{animation:fadeOut .18s ease forwards}
.more-sheet.closing .more-panel{animation:sheetDown .18s ease forwards}
@keyframes sheetDown{to{transform:translateY(100%)}}
.more-grip{display:block;width:42px;height:5px;border-radius:3px;background:var(--track);margin:0 auto 12px}
.more-panel h2{font-size:18px;margin:0 4px 12px}
.more-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.more-tile{display:flex;flex-direction:column;align-items:flex-start;gap:2px;border:0;border-radius:18px;padding:12px;background:var(--bg);box-shadow:var(--raise-xs);text-align:left;color:var(--ink);min-width:0}
.more-tile:active{box-shadow:var(--inset-sm)}
.more-tile strong{font-size:14px}
.more-tile small{font-size:11.5px;color:var(--muted);line-height:1.3}
.more-icon{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;color:var(--accent);box-shadow:var(--inset-sm);font-size:18px;margin-bottom:6px}
.more-tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(96px,1fr));gap:8px;margin-top:12px}
.more-tool{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;border:0;border-radius:16px;padding:12px 8px;min-height:72px;background:var(--bg);box-shadow:var(--raise-xs);font-weight:700;font-size:13px;color:var(--ink);text-align:center}
.more-tool .ico{font-size:20px}
.more-tool .ico{color:var(--accent)}
.more-tool:active{box-shadow:var(--inset-sm)}

/* Tablet rail: compact labels, no group headings. */
@media(min-width:781px) and (max-width:1100px){
  .nav-group{display:none}
  .nav-item{min-height:58px}
  .nav-label{font-size:11px}
  .avatar-label{display:none}
  .avatar-button{padding:4px}
  .topbar-actions{gap:8px}
}
/* Phones: five tabs, everything else in More. */
@media(max-width:780px){
  .primary-nav{grid-template-columns:repeat(5,minmax(0,1fr));gap:4px;padding:6px max(8px,env(safe-area-inset-right)) calc(6px + env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left))}
  .nav-extra,.nav-group{display:none}
  .nav-more{display:flex}
  .nav-item{min-height:56px;font-size:11px;gap:3px;padding:6px 2px}
  .nav-icon{font-size:22px}
  .main-column{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .topbar{height:auto;min-height:60px;box-sizing:border-box;padding:calc(8px + env(safe-area-inset-top)) max(14px,env(safe-area-inset-right)) 8px max(14px,env(safe-area-inset-left));gap:10px}
  .topbar-brand{display:inline-flex}
  .topbar-brand .brand-mark{width:38px;height:38px;border-radius:12px;font-size:19px}
  .topbar .hud{margin:0;flex:1;min-width:0;justify-content:flex-start;overflow:hidden;padding:4px 2px;gap:6px}
  .topbar .hud-level{display:inline-flex;min-height:38px}
  .topbar .hud-chip{padding:6px 9px;font-size:12px}
  .topbar-tool{display:none!important}
  .avatar-label{display:none}
  .avatar-button{padding:3px;min-height:44px}
  main{padding-top:12px}
  .page-intro{margin-bottom:16px}
}
@media(max-width:400px){.topbar .hud-rank{display:none}.topbar .hud-chip{padding:5px 8px;font-size:11.5px}}
@media(max-width:340px){.topbar .hud-chip.xp{display:none}}
@media(min-width:781px){.sidebar{overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}.sidebar>*{flex-shrink:0}}
@media(prefers-reduced-motion:reduce){.more-sheet,.more-panel,.view.active{animation:none!important}}
/* Phone study-setup spacing */
@media(max-width:780px){
  main{padding-bottom:28px}.page-intro>p{line-height:1.6}
  .card-setup{gap:22px;align-items:stretch;padding:22px 16px}.card-setup .card-stack{align-self:center;width:72px;height:84px}.card-setup-body{gap:16px}.card-setup-body h2{font-size:24px}.card-setup-body>p{font-size:14px;line-height:1.6}.card-setup .pill-row{justify-content:flex-start}.card-setup .button-row{justify-content:center}.card-setup .pill{min-height:44px;padding:9px 12px;font-size:12px}.card-setup .button-row .button{flex:1;min-width:0;white-space:normal}
  .learn-bar{margin-bottom:10px}.chip-row{gap:12px;padding-block:10px 14px}.chip-btn{min-height:44px;padding:10px 12px;max-width:min(280px,100%)}
}
@media(max-width:359px){.nav-item{font-size:9.5px}.primary-nav{gap:2px;padding-inline:4px}.lesson-tiles{grid-template-columns:minmax(0,1fr)}}
/* Desktop sidebar fits nine destinations without scrolling on common laptop heights. */
@media(min-width:1101px){.sidebar{gap:16px;padding-top:22px}.primary-nav{gap:3px}.nav-item{padding:9px 14px}.nav-group{padding:10px 14px 2px}.player-card{padding:12px}}
.help-about h3{margin:14px 0 4px;font-size:13px;color:var(--muted)}
.topbar .hud-chip.gp{border:0;background:var(--bg);color:var(--ink);cursor:pointer;min-height:0;font:inherit;font-size:13px;font-weight:800}
.topbar .hud-chip.gp .gem-ico{flex-shrink:0}
@media(max-width:780px){.topbar .hud-chip.gp{padding:6px 9px;font-size:12px}}
@media(max-width:400px){.topbar .hud-chip.gp{padding:5px 8px;font-size:11.5px}}

/* Exam coverage term pills (subject plus term filters) */
.term-group{display:inline-flex;flex-wrap:wrap;align-items:center;gap:6px}
.term-group .term-label{font-size:.78rem;font-weight:700;opacity:.7;padding:0 2px}
.arena-terms{margin-top:8px}

.term-group{margin-inline-start:12px}.term-select{min-height:44px;max-width:100%;padding:8px 12px;border:1px solid #687580;border-radius:8px;background:#242b32;color:inherit;font:inherit}