:root{
  --bg:#06080d;
  --bg2:#0a0e16;
  --panel:rgba(8,12,19,.88);
  --panel2:rgba(14,20,31,.82);
  --line:rgba(255,255,255,.11);
  --line-strong:rgba(190,225,255,.24);
  --soft:rgba(244,248,255,.68);
  --muted:rgba(244,248,255,.43);
  --bright:#f6f8fc;
  --accent:#a7ecff;
  --accent2:#d9c8ff;
  --danger:#ffb6bd;
  --radius:22px;
  --safe-top:max(0px,env(safe-area-inset-top));
  --safe-right:max(0px,env(safe-area-inset-right));
  --safe-bottom:max(12px,env(safe-area-inset-bottom));
  --safe-left:max(0px,env(safe-area-inset-left));
}

*{box-sizing:border-box}
html,body{height:100%;margin:0;background:var(--bg);color:var(--bright);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;overflow:hidden}
button,input{font:inherit}
button{-webkit-tap-highlight-color:transparent}
body{overscroll-behavior:none}
.app-shell{height:100%;display:grid;grid-template-rows:auto 1fr auto;background:radial-gradient(circle at 48% 5%,#182234 0,#0a0e16 34%,#05070b 100%)}

.topbar,.footerbar{display:flex;align-items:center;border-color:var(--line);background:rgba(5,8,13,.78);backdrop-filter:blur(18px);z-index:30}
.topbar{justify-content:space-between;padding:0 12px;border-bottom:1px solid var(--line)}
.footerbar{justify-content:space-between;padding:0 16px;border-top:1px solid var(--line);font-size:12px;color:var(--soft);min-width:0}
.footerbar>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.footer-right{color:var(--muted);margin-left:16px}

.brand{display:flex;align-items:baseline;gap:10px;background:none;border:0;color:white;cursor:pointer;padding:8px;border-radius:12px}
.brand:focus-visible,.icon-btn:focus-visible,.primary:focus-visible,.secondary:focus-visible,.danger-btn:focus-visible,.world-card:focus-visible,.touch-controls button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.brand-mark{font-size:23px;font-weight:800;letter-spacing:-1px}
.brand-sub{font-size:10px;letter-spacing:.22em;color:var(--muted)}
.status-strip{display:flex;align-items:center;gap:7px;font-size:11px;letter-spacing:.08em;min-width:0}
.status-strip span{white-space:nowrap}
.status-sep{color:var(--muted)}
#fieldLabel{color:var(--accent);max-width:42vw;overflow:hidden;text-overflow:ellipsis}
.top-actions{display:flex;gap:6px}
.icon-btn{border:1px solid var(--line);color:white;background:rgba(255,255,255,.035);width:36px;height:36px;border-radius:12px;font-size:17px;cursor:pointer;transition:background .18s,border-color .18s,transform .18s}
.icon-btn:hover{background:rgba(255,255,255,.075);border-color:var(--line-strong)}
.icon-btn:active{transform:scale(.96)}

.stage-wrap{position:relative;min-height:0;overflow:hidden}
#game{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}
.janus-veil{position:absolute;inset:0;pointer-events:none;z-index:4;opacity:0;background:radial-gradient(circle at 76% 38%,rgba(217,200,255,.1),transparent 18%),linear-gradient(110deg,transparent 48%,rgba(167,236,255,.025) 50%,transparent 52%);mix-blend-mode:screen;transition:opacity .7s ease}
.janus-veil.active{opacity:1;animation:janusPulse 1.7s ease-in-out infinite alternate}
@keyframes janusPulse{from{filter:blur(0)}to{filter:blur(1.5px)}}

.hud{position:absolute;left:16px;top:16px;pointer-events:none;z-index:7}
.hud-card{max-width:410px;padding:12px 14px;border:1px solid var(--line);border-radius:15px;background:rgba(5,8,13,.56);backdrop-filter:blur(10px);box-shadow:0 18px 50px rgba(0,0,0,.2)}
.hud-title{font-weight:760;font-size:13px;letter-spacing:.1em}
.hud-body{margin-top:5px;font-size:12px;line-height:1.48;color:var(--soft)}
.hud-kicker{display:block;margin-top:7px;color:var(--accent);font-size:10px;letter-spacing:.08em}

.intro-card{position:absolute;z-index:11;left:50%;top:50%;transform:translate(-50%,-50%);width:min(690px,calc(100% - 34px));padding:36px;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(145deg,rgba(17,24,37,.9),rgba(6,9,14,.76));backdrop-filter:blur(20px);box-shadow:0 35px 120px rgba(0,0,0,.5);transition:opacity .42s ease,transform .42s ease}
.intro-card::before{content:"";position:absolute;inset:-1px;border-radius:inherit;pointer-events:none;background:radial-gradient(circle at 18% 0,rgba(167,236,255,.12),transparent 30%),radial-gradient(circle at 85% 100%,rgba(217,200,255,.1),transparent 34%)}
.intro-card>*{position:relative}
.intro-card.hidden{opacity:0;pointer-events:none;transform:translate(-50%,-47%) scale(.975)}
.eyebrow{font-size:10px;letter-spacing:.25em;color:var(--accent);font-weight:760}
.intro-card h1,.panel-head h2,.pause-card h2{margin:9px 0 10px;letter-spacing:-.04em}
.intro-card h1{font-size:clamp(38px,8vw,72px);line-height:.9}
.intro-card p{color:var(--soft);font-size:15px;line-height:1.65;max-width:62ch}
.intro-actions,.settings-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.intro-note{margin-top:18px;color:var(--muted);font-size:10px;letter-spacing:.04em}
.primary,.secondary,.danger-btn{border-radius:14px;padding:12px 16px;font-weight:730;cursor:pointer;transition:transform .16s,background .16s,border-color .16s}
.primary{border:0;background:white;color:#07090d}
.secondary{border:1px solid var(--line);background:rgba(255,255,255,.035);color:white}
.danger-btn{border:1px solid rgba(255,182,189,.28);background:rgba(255,182,189,.05);color:var(--danger)}
.primary:active,.secondary:active,.danger-btn:active{transform:scale(.98)}

.side-panel{position:absolute;z-index:20;right:12px;top:12px;bottom:12px;width:min(600px,calc(100% - 24px));border:1px solid var(--line);border-radius:22px;background:var(--panel);backdrop-filter:blur(24px);padding:18px;transform:translateX(calc(100% + 34px));transition:transform .34s ease;overflow:auto;box-shadow:0 35px 110px rgba(0,0,0,.55)}
.side-panel.open{transform:translateX(0)}
.panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;position:sticky;top:-18px;padding:18px 0 10px;background:linear-gradient(var(--panel),rgba(8,12,19,.96) 78%,transparent);z-index:2}
.panel-head h2{font-size:29px}
.world-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:4px}
.world-card{position:relative;text-align:left;border:1px solid var(--line);background:rgba(255,255,255,.028);border-radius:17px;color:white;padding:14px;min-height:126px;cursor:pointer;overflow:hidden;transition:background .18s,border-color .18s,transform .18s}
.world-card:hover{background:rgba(255,255,255,.064);border-color:var(--line-strong);transform:translateY(-1px)}
.world-card.active{border-color:rgba(167,236,255,.48);background:rgba(167,236,255,.045)}
.world-card::after{content:"";position:absolute;inset:auto -30px -48px auto;width:100px;height:100px;border-radius:50%;border:1px solid rgba(255,255,255,.05);opacity:.8}
.world-card .sigil{font-size:25px;opacity:.92}
.world-card h3{margin:8px 0 5px;font-size:14px;letter-spacing:.02em}
.world-card p{margin:0;color:var(--muted);font-size:11px;line-height:1.4;max-width:32ch}
.world-card .trace-badge{position:absolute;right:10px;top:10px;color:var(--accent);font-size:10px;letter-spacing:.04em}
.world-card .resonance-dot{position:absolute;right:11px;bottom:11px;width:6px;height:6px;border-radius:50%;background:var(--accent2);box-shadow:0 0 15px var(--accent2);opacity:0}
.world-card.resonant .resonance-dot{opacity:.8}
.panel-foot{font-size:11px;color:var(--muted);padding:16px 2px 4px;line-height:1.5}

.settings-list{display:grid;gap:10px;margin-top:8px}
.setting-row{display:flex;align-items:center;justify-content:space-between;gap:18px;border:1px solid var(--line);background:rgba(255,255,255,.025);padding:14px;border-radius:15px}
.setting-row span{display:grid;gap:3px}
.setting-row strong{font-size:13px}
.setting-row small{color:var(--muted);font-size:10px;line-height:1.4}
.setting-row input[type="checkbox"]{appearance:none;width:44px;height:24px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.06);position:relative;cursor:pointer;flex:0 0 auto}
.setting-row input[type="checkbox"]::after{content:"";position:absolute;left:3px;top:3px;width:16px;height:16px;border-radius:50%;background:rgba(255,255,255,.7);transition:transform .18s,background .18s}
.setting-row input[type="checkbox"]:checked{background:rgba(167,236,255,.14);border-color:rgba(167,236,255,.4)}
.setting-row input[type="checkbox"]:checked::after{transform:translateX(20px);background:white}
.setting-row input[type="range"]{width:min(180px,42vw);accent-color:var(--accent)}
.settings-meta{margin-top:18px;padding:14px;border-top:1px solid var(--line);color:var(--muted);font-size:10px;line-height:1.6}

.pause-layer{position:absolute;inset:0;z-index:19;display:grid;place-items:center;background:rgba(3,5,8,.43);backdrop-filter:blur(9px);opacity:0;pointer-events:none;transition:opacity .2s}
.pause-layer.open{opacity:1;pointer-events:auto}
.pause-card{width:min(420px,calc(100% - 34px));border:1px solid var(--line);background:var(--panel2);border-radius:20px;padding:24px;box-shadow:0 30px 100px rgba(0,0,0,.48)}
.pause-card p{color:var(--soft);font-size:13px;line-height:1.55}

.toast{position:absolute;z-index:26;left:50%;bottom:82px;transform:translateX(-50%) translateY(12px);opacity:0;pointer-events:none;background:rgba(3,5,8,.9);border:1px solid var(--line);border-radius:999px;padding:10px 14px;font-size:11px;transition:.22s;max-width:calc(100% - 28px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;box-shadow:0 16px 50px rgba(0,0,0,.3)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.touch-controls{position:absolute;z-index:14;left:0;right:0;bottom:var(--safe-bottom);display:none;align-items:end;justify-content:space-between;padding:0 max(18px,var(--safe-right)) 0 max(18px,var(--safe-left));user-select:none;pointer-events:none}
.touch-controls.visible{display:flex}
.intro-card:not(.hidden) ~ .touch-controls{display:none!important}
.touch-pad{display:grid;grid-template-columns:repeat(3,48px);grid-template-rows:repeat(3,48px);gap:4px;pointer-events:none}
.touch-controls button{width:48px;height:48px;border-radius:15px;border:1px solid var(--line);background:rgba(7,11,18,.72);color:white;backdrop-filter:blur(10px);font-size:15px;touch-action:none;pointer-events:auto}
.touch-up{grid-column:2;grid-row:1}.touch-left{grid-column:1;grid-row:2}.touch-down{grid-column:2;grid-row:2}.touch-right{grid-column:3;grid-row:2}
.touch-controls .touch-action{width:64px;height:64px;margin-bottom:8px;border-radius:50%;border-color:rgba(167,236,255,.42);background:rgba(167,236,255,.07);font-size:19px}
.touch-controls button:active{background:rgba(255,255,255,.12)}

@media (hover:none),(pointer:coarse){.touch-controls{display:flex}}
@media (max-width:760px){
  .brand-sub,.footer-right{display:none}
  .status-strip{font-size:9px;gap:5px;max-width:48vw}
  #fieldLabel{max-width:25vw}
  .top-actions{gap:4px}.icon-btn{width:34px;height:34px}
  .intro-card{padding:26px 22px}.intro-card h1{font-size:46px}.intro-card p{font-size:13px}
  .world-grid{grid-template-columns:1fr}.world-card{min-height:108px}
  .hud{left:10px;top:10px}.hud-card{max-width:calc(100vw - 20px);padding:9px 11px}.hud-body{font-size:11px}
  .footerbar{padding:0 10px;font-size:10px}
  .side-panel{right:6px;top:6px;bottom:6px;width:calc(100% - 12px);padding:14px}
  .panel-head{top:-14px;padding-top:14px}.panel-head h2{font-size:25px}
  .toast{bottom:82px}
  .touch-pad{grid-template-columns:repeat(3,46px);grid-template-rows:repeat(3,46px)}.touch-controls button{width:46px;height:46px}.touch-controls .touch-action{width:62px;height:62px}
}
@media (max-height:560px) and (orientation:landscape){
  .topbar{min-height:calc(48px + env(safe-area-inset-top));padding-top:var(--safe-top);padding-left:max(8px,var(--safe-left));padding-right:max(8px,var(--safe-right))}.footerbar{min-height:calc(30px + env(safe-area-inset-bottom));font-size:9px}
  .intro-card{padding:18px 22px}.intro-card h1{font-size:38px}.intro-card p{font-size:12px;line-height:1.45}.intro-note{display:none}
  .hud-card{max-width:360px}.touch-controls{padding-left:max(12px,var(--safe-left));padding-right:max(12px,var(--safe-right))}.touch-pad{grid-template-columns:repeat(3,40px);grid-template-rows:repeat(3,40px);gap:3px}.touch-controls button{width:40px;height:40px;border-radius:12px}.touch-controls .touch-action{width:56px;height:56px;margin-bottom:2px}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.001ms!important}}

/* mobile viewport, safe areas, interfield passage */
html,body{min-height:100%;min-height:100dvh}
.app-shell{height:100vh;height:100dvh}
.topbar{min-height:calc(58px + env(safe-area-inset-top));padding-top:var(--safe-top);padding-left:max(12px,var(--safe-left));padding-right:max(12px,var(--safe-right))}
.stage-wrap{min-height:0}
.footerbar{min-height:calc(38px + env(safe-area-inset-bottom));padding-left:max(16px,var(--safe-left));padding-right:max(16px,var(--safe-right));padding-bottom:env(safe-area-inset-bottom)}
.passage-btn:not([hidden]){border-color:rgba(217,200,255,.38);box-shadow:0 0 22px rgba(217,200,255,.08);animation:passageBreath 2.8s ease-in-out infinite}
@keyframes passageBreath{50%{transform:translateY(-1px);border-color:rgba(167,236,255,.52)}}
@media (prefers-reduced-motion:reduce){.passage-btn:not([hidden]){animation:none}}

/* v0.4 smartphone/performance refinements */
.side-panel{overscroll-behavior:contain;touch-action:pan-y;-webkit-overflow-scrolling:touch}
.low-power .topbar,.low-power .footerbar,.low-power .side-panel,.low-power .hud-card,.low-power .touch-controls button{backdrop-filter:blur(8px)}
.low-power .intro-card{backdrop-filter:blur(10px)}
@media (max-width:760px){
  .topbar{padding-left:max(8px,var(--safe-left));padding-right:max(8px,var(--safe-right))}
  .hud{left:max(10px,var(--safe-left));top:max(10px,var(--safe-top))}
  .side-panel{right:max(6px,var(--safe-right));left:max(6px,var(--safe-left));width:auto;top:max(6px,var(--safe-top));bottom:max(6px,var(--safe-bottom))}
  .brand-sub{display:none}
  .icon-btn{min-width:44px;min-height:44px}
}

.school-pill{display:inline-flex;align-items:center;justify-content:center;min-height:34px;padding:0 10px;border:1px solid rgba(167,236,255,.22);border-radius:999px;color:var(--accent);text-decoration:none;font-size:9px;font-weight:800;letter-spacing:.1em;background:rgba(167,236,255,.035)}.school-pill:hover{background:rgba(167,236,255,.08);border-color:rgba(167,236,255,.4)}.school-intro{text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.school-world-card{border-color:rgba(167,236,255,.2);background:linear-gradient(145deg,rgba(167,236,255,.06),rgba(217,200,255,.035))}@media(max-width:760px){.school-pill{min-height:34px;padding:0 8px;font-size:8px}}