/* RIFT//SHIFT · interface stylesheet
   Design language: "deep field" — layered dark glass over an aurora backdrop,
   one theme-driven accent (--accent, set from game.mjs), Inter Display for
   headlines, monospaced micro-labels for telemetry. */

@font-face{font-family:'Inter Display';font-weight:600;font-style:normal;font-display:swap;src:url(fonts/display-600.woff) format('woff')}
@font-face{font-family:'Inter';font-weight:400;font-style:normal;font-display:swap;src:url(fonts/text-400.woff) format('woff')}
@font-face{font-family:'Inter';font-weight:500;font-style:normal;font-display:swap;src:url(fonts/text-500.woff) format('woff')}
@font-face{font-family:'Inter';font-weight:600;font-style:normal;font-display:swap;src:url(fonts/text-600.woff) format('woff')}

:root{
 color-scheme:dark;
 --bg:#05080f;--bg-2:#0a1120;
 --panel:rgba(14,21,36,.72);--panel-solid:#0f1626;--panel-2:rgba(22,32,52,.7);
 --line:rgba(150,180,220,.12);--line-strong:rgba(150,180,220,.26);
 --cyan:#61f5df;--violet:#b39aff;--coral:#ff8a8f;--gold:#f8cf7e;
 --text:#eef4ff;--text-2:#c3cfe3;--muted:#8b9bb6;--faint:#55657f;
 --accent:var(--cyan);
 --accent-12:color-mix(in srgb,var(--accent) 12%,transparent);
 --accent-20:color-mix(in srgb,var(--accent) 20%,transparent);
 --accent-35:color-mix(in srgb,var(--accent) 35%,transparent);
 --accent-60:color-mix(in srgb,var(--accent) 60%,transparent);
 --accent-ink:#04141a;
 --font:Inter,'Segoe UI',system-ui,-apple-system,Arial,sans-serif;
 --font-display:'Inter Display',Inter,'Segoe UI',system-ui,sans-serif;
 --font-mono:ui-monospace,'SF Mono','JetBrains Mono',Menlo,Consolas,monospace;
 --radius:18px;--radius-sm:12px;
 --shadow:0 30px 80px rgba(0,0,0,.55),0 2px 0 rgba(255,255,255,.03) inset;
 --ease:cubic-bezier(.2,.8,.2,1);
 font-family:var(--font);font-synthesis:none;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{
 margin:0;color:var(--text);min-height:100svh;overflow-x:hidden;
 background:
  radial-gradient(1200px 700px at 50% -10%,#101a33 0%,transparent 60%),
  radial-gradient(900px 600px at 100% 100%,#0d1430 0%,transparent 55%),
  linear-gradient(180deg,var(--bg-2),var(--bg) 60%)
}
body:before{content:'';position:fixed;inset:0;pointer-events:none;z-index:-1;opacity:.35;
 background-image:radial-gradient(rgba(170,200,240,.14) 1px,transparent 1.2px);background-size:26px 26px;
 mask-image:radial-gradient(80% 70% at 50% 40%,#000 20%,transparent 100%);-webkit-mask-image:radial-gradient(80% 70% at 50% 40%,#000 20%,transparent 100%)}

button,input,textarea{font:inherit}
button{cursor:pointer;color:inherit;border:0;background:none;touch-action:manipulation;transition:transform .18s var(--ease),background .18s,border-color .18s,color .18s,box-shadow .18s,opacity .18s}
button:disabled{opacity:.32;cursor:default}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,canvas:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
button:active:not(:disabled){transform:scale(.97)}
button,a{-webkit-tap-highlight-color:transparent}
a{color:var(--accent)}
svg{display:block}

/* ---------- ambient backdrop ---------- */
.ambient{position:fixed;inset:0;overflow:hidden;pointer-events:none;z-index:-1}
.ambient i{position:absolute;border-radius:50%;filter:blur(120px);will-change:transform}
.ambient i:nth-child(1){width:720px;height:720px;left:38%;top:-18%;background:var(--accent);opacity:.11;animation:drift 26s var(--ease) infinite alternate}
.ambient i:nth-child(2){width:640px;height:640px;left:-22%;top:40%;background:#6a4bff;opacity:.13;animation:drift 34s var(--ease) infinite alternate-reverse}
.ambient i:nth-child(3){width:520px;height:520px;right:-18%;top:55%;background:#ff7fa0;opacity:.06;animation:drift 40s var(--ease) infinite alternate}
@keyframes drift{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(60px,40px,0) scale(1.12)}}

/* ---------- glass primitives ---------- */
.glass,.board-wrap,.modal,.stat,.tool,.forecast-buttons button,.level-card,.theme-card,.iconbtn,.wallet,#toast,.bottomnav,.legend-mark,.lesson,.menu-row .secondary{
 background:var(--panel);
 border:1px solid var(--line);
 -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%)
}

/* ---------- top bar ---------- */
.topbar{height:84px;display:flex;align-items:center;justify-content:space-between;max-width:1440px;margin:auto;padding:0 56px;gap:16px}
.brand{font-family:var(--font-display);font-size:20px;letter-spacing:3px;font-weight:600;white-space:nowrap;padding:8px 0;text-decoration:none;color:var(--text)}
.brand span{color:var(--accent);padding:0 3px;text-shadow:0 0 18px var(--accent-60)}
.build{font:10px/1 var(--font-mono);color:var(--muted);letter-spacing:1.8px;display:flex;align-items:center;gap:10px;padding:9px 14px;border:1px solid var(--line);border-radius:999px;background:rgba(10,16,28,.5)}
.dot{width:6px;height:6px;border-radius:100%;background:var(--accent);box-shadow:0 0 10px var(--accent),0 0 2px #fff inset;animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
.topactions{display:flex;align-items:center;gap:12px}
.iconbtn{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;color:var(--text-2)}
.iconbtn:hover:not(:disabled){border-color:var(--line-strong);color:var(--text);background:var(--panel-2)}
.iconbtn svg{width:19px;height:19px}
.wallet{font:12px/1 var(--font-mono);color:var(--gold);letter-spacing:1px;padding:0 14px;height:44px;display:flex;align-items:center;gap:8px;border-radius:14px}

/* ---------- stage layout ---------- */
.stage{max-width:1380px;margin:10px auto 0;display:grid;grid-template-columns:1fr 470px 1fr;gap:54px;align-items:center;padding:0 56px 30px;min-height:calc(100svh - 140px)}
.side{max-width:270px}
.eyebrow{font:10px/1 var(--font-mono);letter-spacing:2.8px;color:var(--accent);text-transform:uppercase;display:block;margin-bottom:22px}
.side h1{font-family:var(--font-display);font-size:clamp(36px,3.4vw,58px);line-height:1.02;font-weight:600;letter-spacing:-2.4px;margin:0 0 22px;text-wrap:balance}
.side h1 em{font-style:normal;color:var(--accent);text-shadow:0 0 30px var(--accent-35)}
.side p{font-size:13.5px;line-height:1.8;color:var(--muted);margin:0 0 28px}
.fine-rule{height:1px;background:linear-gradient(90deg,var(--line-strong),transparent);margin:28px 0}
.chapter{display:flex;gap:16px;align-items:center}
.chapter-number{font:600 40px/1 var(--font-display);letter-spacing:-2px;color:transparent;-webkit-text-stroke:1px var(--faint)}
.small{font-size:12px;color:var(--muted);line-height:1.7}
.strong{color:var(--text)}
.legend{display:flex;align-items:center;gap:14px;padding:11px 0;font-size:12px;color:var(--muted)}
.legend-mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;color:var(--accent);font-size:18px;flex-shrink:0}
.legend:nth-of-type(2) .legend-mark{color:var(--violet)}
.legend:nth-of-type(3) .legend-mark{color:var(--gold)}
.instruction{padding:17px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:12.5px;line-height:1.8;color:var(--text-2);margin:12px 0}
.keycaps{display:flex;gap:6px;margin-top:22px}
.keycaps kbd{min-width:30px;height:30px;padding:0 7px;border:1px solid var(--line-strong);border-bottom-width:2px;border-radius:7px;display:grid;place-items:center;font:12px var(--font-mono);color:var(--text-2);background:rgba(20,30,50,.6)}

/* ---------- play column ---------- */
.phone{width:100%;max-width:470px;position:relative;align-self:center}
.mode-line{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;gap:10px}
.mode-tag{font:10px/1 var(--font-mono);letter-spacing:2.2px;color:var(--muted);display:flex;gap:9px;align-items:center;padding:8px 12px 8px 10px;border:1px solid var(--line);border-radius:999px;background:rgba(10,16,28,.45)}
.textbtn{color:var(--muted);font-size:12px;font-weight:500;padding:10px 4px;min-height:40px;border-radius:8px}
.textbtn:hover:not(:disabled){color:var(--accent)}
.level-title{font-family:var(--font-display);font-size:30px;font-weight:600;letter-spacing:-1.1px;margin:0 0 16px;display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.level-title .number{font:12px var(--font-mono);color:var(--muted);letter-spacing:1px}

.hud{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin-bottom:14px}
.stat{border-radius:14px;padding:12px 14px 11px;position:relative;overflow:hidden;min-width:0}
.stat:before{content:'';position:absolute;inset:0 0 auto 0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.14),transparent)}
.stat-label{font:9px/1 var(--font-mono);letter-spacing:2px;text-transform:uppercase;color:var(--muted)}
.stat-value{font:600 26px/1 var(--font-display);letter-spacing:-1.2px;margin-top:9px;display:flex;gap:6px;align-items:baseline;font-variant-numeric:tabular-nums}
.stat-value small{font:500 12px var(--font);color:var(--faint);letter-spacing:0}
.stat-value.accent{color:var(--accent);text-shadow:0 0 22px var(--accent-35)}
.segments{display:flex;gap:3px;margin-top:9px;height:3px}
.segments i{flex:1;border-radius:2px;background:var(--line-strong);transition:background .25s,box-shadow .25s}
.segments i.on{background:var(--accent);box-shadow:0 0 8px var(--accent-60)}

.board-wrap{position:relative;border-radius:24px;padding:12px;overflow:hidden;
 background:linear-gradient(var(--panel-solid),var(--panel-solid)) padding-box,linear-gradient(160deg,var(--accent-35),rgba(255,255,255,.06) 40%,rgba(179,154,255,.25)) border-box;
 border:1px solid transparent;
 box-shadow:0 40px 90px rgba(0,0,0,.6),0 0 90px var(--accent-12),0 1px 0 rgba(255,255,255,.05) inset}
.board-wrap:before,.board-wrap:after{content:'';position:absolute;width:88px;height:2px;background:var(--accent);top:0;left:calc(50% - 44px);opacity:.9;box-shadow:0 0 16px var(--accent),0 0 40px var(--accent-60);pointer-events:none;border-radius:2px}
.board-wrap:after{top:auto;bottom:0;width:36px;left:calc(50% - 18px);opacity:.3}
canvas{display:block;width:100%;height:auto;aspect-ratio:5/6;touch-action:none;border-radius:14px;user-select:none;background:#070c17}
.board-caption{position:absolute;pointer-events:none;left:12px;right:12px;top:46%;text-align:center;font:600 24px var(--font-display);letter-spacing:4px;color:#fff;text-shadow:0 0 24px var(--accent),0 2px 12px rgba(0,0,0,.6);opacity:0;transform:translateY(6px) scale(.96);transition:opacity .2s,transform .3s var(--ease)}
.board-caption.show{opacity:1;transform:none}

.game-toolbar{display:flex;align-items:center;justify-content:space-between;margin:12px 0 0;gap:12px}
.toolgroup{display:flex;gap:6px}
.tool{color:var(--text-2);padding:0 13px 0 10px;height:40px;font-size:12px;font-weight:500;display:flex;gap:7px;align-items:center;border-radius:12px}
.tool span{font-size:16px;line-height:1;color:var(--muted);display:grid;place-items:center}
.tool svg{width:15px;height:15px}
.tool:hover:not(:disabled){border-color:var(--line-strong);color:var(--text);background:var(--panel-2)}
.tool:hover:not(:disabled) span{color:var(--accent)}
.swipe-hint{font:10px/1.35 var(--font-mono);letter-spacing:1px;color:var(--faint);text-align:right}
.lesson{border-radius:12px;border-left:2px solid var(--accent);padding:10px 14px;line-height:1.6;color:var(--text-2);font-size:12.5px;min-height:40px;margin:10px 0 8px;display:flex;align-items:center}

.forecast-bar{display:flex;align-items:center;gap:12px;margin:0 0 10px}
.forecast-buttons{display:flex;gap:4px;flex-shrink:0}
.forecast-buttons button{width:44px;height:44px;border-radius:12px;color:var(--text);font-size:18px;touch-action:none;user-select:none;-webkit-touch-callout:none;display:grid;place-items:center}
.forecast-buttons button:hover:not(:disabled){border-color:var(--line-strong);background:var(--panel-2)}
.forecast-buttons button.active{color:var(--accent-ink);border-color:var(--accent);background:var(--accent);box-shadow:0 0 22px var(--accent-60);transform:translateY(-1px)}
.forecast-copy{display:grid;color:var(--muted);font-size:11.5px;line-height:1.4}
.forecast-copy span{grid-area:1/1;transition:opacity .15s}
.forecast-bar:has(button.active) #forecast-instruction{opacity:0}
#forecast-status{color:var(--accent);font-weight:500}

.bottomnav{max-width:470px;margin:4px auto 0;display:flex;justify-content:space-between;gap:4px;padding:5px;border-radius:18px}
.navitem{color:var(--muted);padding:0 6px;font-size:10.5px;font-weight:500;letter-spacing:0;min-height:42px;display:flex;align-items:center;gap:6px;border-radius:13px;flex:1;justify-content:center;position:relative;white-space:nowrap}
.navitem:hover:not(:disabled){color:var(--text);background:rgba(255,255,255,.04)}
.navitem.active{color:var(--accent);background:var(--accent-12);box-shadow:0 0 0 1px var(--accent-20) inset}
.navitem svg{width:15px;height:15px}
.footer-note{text-align:center;color:var(--faint);font:9px var(--font-mono);letter-spacing:2px;margin:22px 0}

/* ---------- modals ---------- */
.overlay{position:fixed;inset:0;background:rgba(3,6,12,.66);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);z-index:20;display:flex;align-items:center;justify-content:center;padding:24px;animation:fade .2s}
@keyframes fade{from{opacity:0}}
.modal{max-width:470px;width:100%;max-height:90svh;overflow:auto;border-radius:26px;padding:30px;position:relative;
 background:linear-gradient(rgba(14,21,36,.9),rgba(14,21,36,.9)) padding-box,linear-gradient(160deg,var(--accent-35),rgba(255,255,255,.07) 45%,rgba(179,154,255,.22)) border-box;
 border:1px solid transparent;box-shadow:var(--shadow),0 0 80px var(--accent-12);
 animation:rise .32s var(--ease);overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent}
@keyframes rise{from{opacity:0;transform:translateY(14px) scale(.98)}}
.modal.wide{max-width:600px}
.modal h2{font-family:var(--font-display);font-size:32px;letter-spacing:-1.2px;font-weight:600;margin:8px 0 10px;text-wrap:balance}
.modal p{color:var(--muted);font-size:13.5px;line-height:1.75;margin:10px 0 22px}
.modal .eyebrow{margin-bottom:8px}
.modal-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:4px}
.modal-head h2{font-size:26px;margin:0}
.close{width:40px;height:40px;color:var(--muted);font-size:22px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;flex-shrink:0}
.close:hover:not(:disabled){color:var(--text);background:var(--panel-2)}

.primary,.secondary{min-height:52px;width:100%;border-radius:14px;padding:14px 20px;font-size:13.5px;font-weight:600;letter-spacing:.2px;display:flex;justify-content:center;align-items:center;gap:12px;position:relative}
.primary{background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 85%,#fff),var(--accent));color:var(--accent-ink);box-shadow:0 10px 30px var(--accent-35),0 1px 0 rgba(255,255,255,.35) inset}
.primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 14px 36px var(--accent-60),0 1px 0 rgba(255,255,255,.4) inset}
.primary:active:not(:disabled){transform:translateY(0) scale(.98)}
.secondary{background:var(--panel-2);border:1px solid var(--line-strong);color:var(--text);margin-top:10px}
.secondary:hover:not(:disabled){background:rgba(32,46,72,.8);border-color:rgba(170,200,240,.4)}
.subtle{color:var(--muted);font-size:12px;font-weight:500;min-height:44px;padding:12px 10px;width:100%;border-radius:12px}
.subtle:hover:not(:disabled){color:var(--text);background:rgba(255,255,255,.04)}
.primary small,.secondary small{font-weight:400}

.result-symbol{font-size:54px;line-height:1;color:var(--accent);margin:16px 0 10px;text-shadow:0 0 40px var(--accent-60);animation:pop .5s var(--ease)}
@keyframes pop{from{transform:scale(.6);opacity:0}}
.result-grid{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:8px;margin:20px 0}
.result-grid>div{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:14px;padding:14px 12px 12px}
.result-grid span{display:block}
.result-grid .value{font:600 24px/1 var(--font-display);letter-spacing:-1px;margin:8px 0 0;color:var(--text);font-variant-numeric:tabular-nums}
.stars{font-size:28px;letter-spacing:8px;color:var(--gold);margin:10px 0 16px;text-shadow:0 0 22px rgba(248,207,126,.6);animation:pop .55s var(--ease) .1s both}

.level-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;margin:20px 0}
.level-card{aspect-ratio:1;border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;font:600 18px/1 var(--font-display);color:var(--text-2);letter-spacing:-.5px}
.level-card:hover:not(:disabled){transform:translateY(-2px);border-color:var(--line-strong);background:var(--panel-2)}
.level-card.current{border-color:var(--accent);background:var(--accent-12);color:var(--accent);box-shadow:0 0 24px var(--accent-20)}
.level-card small{font-size:8px;letter-spacing:2px;color:var(--gold)}
.level-card:disabled{color:var(--faint)}
.progress-track{height:4px;background:var(--line);margin:14px 0;border-radius:4px;overflow:hidden}
.progress-track i{height:100%;display:block;background:linear-gradient(90deg,var(--accent-60),var(--accent));border-radius:4px;box-shadow:0 0 12px var(--accent-60);transition:width .4s var(--ease)}

.setting{display:flex;justify-content:space-between;align-items:center;padding:15px 0;border-bottom:1px solid var(--line);gap:16px}
.setting:last-of-type{border-bottom:0}
.setting-label{font-size:13.5px;line-height:1.4;font-weight:500}
.setting-label small{display:block;font-size:11px;color:var(--muted);margin-top:4px;font-weight:400}
.toggle{border:1px solid var(--line-strong);background:rgba(30,42,64,.8);border-radius:20px;width:48px;height:28px;padding:3px;flex-shrink:0;position:relative}
.toggle i{display:block;width:20px;height:20px;background:#9fb0c8;border-radius:50%;transition:transform .22s var(--ease),background .2s;box-shadow:0 2px 6px rgba(0,0,0,.4)}
.toggle.on{background:var(--accent);border-color:var(--accent);box-shadow:0 0 16px var(--accent-35)}
.toggle.on i{background:#fff;transform:translateX(20px)}
.pills{display:flex;gap:6px}
.pill{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:10px;min-height:38px;padding:8px 13px;font-size:12px;font-weight:500;color:var(--text-2)}
.pill:hover:not(:disabled){border-color:var(--line-strong)}
.pill.on{color:var(--accent);border-color:var(--accent);background:var(--accent-12)}

.theme-card{padding:14px;border-radius:18px;margin:12px 0}
.theme-preview{height:64px;border-radius:12px;margin-bottom:12px;display:flex;align-items:center;justify-content:center;gap:26px;font-size:28px;letter-spacing:6px;
 background:radial-gradient(120% 140% at 50% 120%,color-mix(in srgb,currentColor 22%,transparent),transparent 60%),#070c17;border:1px solid var(--line);text-shadow:0 0 18px currentColor}
.theme-title{display:flex;justify-content:space-between;align-items:center;font-size:14px;font-weight:500}
.theme-card button{min-height:42px;color:var(--accent);padding:9px 0;font-size:12px;font-weight:600;width:100%;margin-top:6px;border-radius:10px;border:1px solid var(--accent-20);background:var(--accent-12)}
.theme-card button:hover:not(:disabled){background:var(--accent-20)}
.theme-card button:disabled{opacity:.55;color:var(--muted);border-color:var(--line);background:transparent}
.mono{font:11px var(--font-mono);letter-spacing:1px;color:var(--muted)}
.menu-mark{width:112px;margin:12px auto;display:block;filter:drop-shadow(0 18px 40px var(--accent-35))}
.menu-title{font-size:40px!important;text-align:center;letter-spacing:1px!important}
.center{text-align:center}
.menu-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.menu-row .secondary{margin:0;padding:15px 8px;min-height:84px;flex-direction:column;font-size:12.5px;gap:6px}
.menu-row small{font-size:9.5px;color:var(--muted);font-weight:400;letter-spacing:1px;font-family:var(--font-mono)}
.bonus-trials{display:grid;gap:8px;margin-bottom:18px}
.bonus-trials .secondary{margin:0;min-height:46px}

.loading{height:100svh;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:24px}
.loading .brand{font-size:26px;background:linear-gradient(90deg,var(--text),var(--accent),var(--text));background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shimmer 1.8s linear infinite}
.loading .brand span{color:transparent}
@keyframes shimmer{to{background-position:-200% 0}}
.loading p{color:var(--muted);font:10px var(--font-mono);letter-spacing:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
#toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,16px);padding:13px 20px;max-width:90vw;z-index:60;font-size:12.5px;font-weight:500;border-radius:999px;opacity:0;pointer-events:none;transition:.25s var(--ease);box-shadow:0 16px 40px rgba(0,0,0,.5);color:var(--text)}
#toast.show{opacity:1;transform:translate(-50%,0)}
.seed{font-size:10px;color:var(--faint);word-break:break-all}
.sharebox{width:100%;height:124px;background:#070c17;color:var(--text);border:1px solid var(--line-strong);border-radius:12px;padding:14px;font:12px/1.6 var(--font-mono);resize:none}
.danger{color:var(--coral)}
.dev{margin:16px 0;padding:12px;border:1px dashed var(--line-strong);border-radius:12px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.dev button{background:var(--panel-2);padding:10px;font-size:10px;border-radius:8px;border:1px solid var(--line)}
.dev input{width:110px;background:#070c17;border:1px solid var(--line-strong);color:white;padding:7px;border-radius:8px}

/* ---------- responsive ---------- */
@media(min-width:1500px){.stage{gap:80px}}
@media(max-width:1150px){
 .stage{grid-template-columns:1fr 440px;gap:50px;max-width:980px;padding:0 35px 25px}
 .side.right{display:none}.topbar{padding:0 35px}.phone{max-width:440px}
}
@media(max-width:760px){
 .topbar{height:64px;padding:0 20px;max-width:500px}
 .brand{font-size:17px;letter-spacing:2.5px}.build{display:none}.topactions{gap:8px}
 .iconbtn{width:40px;height:40px;border-radius:12px}.wallet{height:40px;padding:0 12px;border-radius:12px}
 .stage{display:block;margin:4px auto 0;padding:0 16px 16px;max-width:500px;min-height:0}
 .side{display:none}.phone{max-width:none}
 .level-title{font-size:26px;margin-bottom:12px}.hud{margin-bottom:12px;gap:6px}.stat{padding:10px 12px 9px;border-radius:12px}
 .mode-line{margin-bottom:8px}.stat-value{font-size:24px}
 .board-wrap{padding:9px;border-radius:20px}canvas{border-radius:12px}
 .bottomnav{margin-top:8px;box-shadow:0 14px 40px rgba(0,0,0,.4)}
 .navitem{flex-direction:column;gap:4px;font-size:10px;padding:6px 2px;min-height:50px;white-space:nowrap;letter-spacing:0}
 .navitem svg{width:16px;height:16px}
 .tool{padding:0 10px 0 8px;font-size:11.5px}
 .footer-note{margin:14px 0;font-size:8px}
 .overlay{padding:0;align-items:flex-end}
 .modal{max-width:none;border-radius:26px 26px 0 0;padding:22px 20px calc(24px + env(safe-area-inset-bottom));max-height:92svh;animation:sheet .36s var(--ease)}
 .modal:before{content:'';position:sticky;top:0;display:block;width:40px;height:4px;border-radius:4px;background:var(--line-strong);margin:0 auto 14px}
 @keyframes sheet{from{transform:translateY(40px);opacity:0}}
 .modal h2{font-size:28px}.level-grid{gap:7px}.level-card{font-size:16px}
 .lesson{font-size:12px}.wallet{font-size:11px}.swipe-hint{font-size:9px;letter-spacing:1px}
 .topbar{padding-top:env(safe-area-inset-top)}body{padding-bottom:env(safe-area-inset-bottom)}
}
@media(max-height:960px) and (min-width:761px){
 .topbar{height:64px}.stage{grid-template-columns:1fr 350px 1fr;gap:48px;margin-top:0;padding-bottom:4px;min-height:0}.phone{max-width:350px}.stat{padding:9px 12px 8px}.stat-value{font-size:22px;margin-top:6px}.level-title{font-size:25px;margin-bottom:10px}.hud{margin-bottom:10px}.segments{margin-top:6px}.mode-line{margin-bottom:6px}.game-toolbar{margin-top:8px}.tool{height:36px}.lesson{margin:8px 0 6px;min-height:36px;padding:7px 12px}.forecast-bar{margin-bottom:6px}.bottomnav{margin-top:2px}.navitem{min-height:38px}.footer-note{margin:8px 0}
}
@media(max-height:850px) and (min-width:761px){
 .topbar{height:70px}
 .stage{grid-template-columns:1fr 350px 1fr;max-width:1250px;gap:44px}
 .level-title{margin-bottom:12px;font-size:25px}.stat-value{font-size:22px}.stat{padding:10px 12px 9px}
 .phone{max-width:350px}.side h1{font-size:42px}.footer-note{display:none}
}
@media(max-height:900px) and (max-width:760px){
 .topbar{height:56px}.stage{max-width:400px;padding:0 14px 8px}
 .level-title{font-size:22px;margin-bottom:9px}.stat-value{font-size:22px}.hud{margin-bottom:9px}
 .lesson{margin:5px 0;min-height:30px;padding:7px 12px}.game-toolbar{margin-top:6px}.tool{height:36px}
 .footer-note{display:none}.mode-line{margin-bottom:3px}.bottomnav{margin-top:6px}.navitem{min-height:38px}
 .board-wrap{padding:8px;max-width:338px;margin-inline:auto}.segments{margin-top:6px}
}
@media(prefers-reduced-motion:reduce){
 *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
 .ambient i{filter:blur(100px)}
}
@media(prefers-contrast:more){:root{--line:rgba(150,180,220,.3);--line-strong:rgba(150,180,220,.5);--muted:#aab8cf}}