/* Layout: one full-bleed night-arena canvas; HUD drawn on canvas; menus are glass panels floating over the scene. */
:root{
  --night:#05070a; --panel:rgba(10,13,18,.82); --line:rgba(201,206,214,.16);
  --text:#e9edf2; --muted:#8b95a1; --concrete:#c9ccd0; --led:#ff2b3a;
  --inhale:#7fd3ff; --exhale:#ffcf9e; --good:#7dffb0;
  --display:"Saira Condensed","Arial Narrow",system-ui,sans-serif;
  --body:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:dark;
}
html,body{height:100%;margin:0;}
[hidden]{display:none!important;}
*{box-sizing:border-box;}
body{background:var(--night);color:var(--text);font-family:var(--body);overflow:hidden;-webkit-user-select:none;user-select:none;touch-action:none;}
#stage{position:fixed;inset:0;width:100%;height:100%;display:block;}
.overlay{position:fixed;inset:0;display:flex;flex-direction:column;padding-block:max(16px,env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-bottom,0px));padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));background:radial-gradient(ellipse at 50% 40%,rgba(5,7,10,.35),rgba(5,7,10,.82));overflow-y:auto;touch-action:pan-y;}
.card{margin:auto;flex:none;width:min(560px,100%);background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px 24px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);display:grid;gap:18px;box-shadow:0 30px 80px rgba(0,0,0,.5);}
.eyebrow{font-family:var(--display);letter-spacing:.22em;text-transform:uppercase;font-size:13px;color:var(--led);display:flex;align-items:center;gap:8px;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--led);box-shadow:0 0 8px var(--led);}
h1{font-family:var(--display);font-weight:700;font-size:clamp(44px,9vw,68px);line-height:.9;margin:0;letter-spacing:.01em;text-transform:uppercase;text-wrap:balance;}
h2{font-family:var(--display);font-weight:700;font-size:32px;line-height:1;margin:0;text-transform:uppercase;text-wrap:balance;}
p{margin:0;line-height:1.55;color:#c5ccd5;font-size:15px;max-width:62ch;}
.how{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.how div{border:1px solid var(--line);border-radius:10px;padding:12px;display:grid;gap:4px;min-width:0;}
.how b{font-family:var(--display);font-size:20px;letter-spacing:.06em;text-transform:uppercase;}
.how .in b{color:var(--inhale);} .how .ex b{color:var(--exhale);}
.how span{font-size:13.5px;color:#bcc4ce;line-height:1.45;}
.field{display:grid;gap:8px;}
.label{font-family:var(--display);letter-spacing:.16em;text-transform:uppercase;font-size:13px;color:var(--muted);}
.chips{display:flex;flex-wrap:wrap;gap:8px;}
.chips input{position:absolute;opacity:0;pointer-events:none;}
.chips label{border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:14px;cursor:pointer;color:#cfd5dd;transition:all .15s;display:flex;gap:6px;align-items:baseline;}
.chips label small{color:var(--muted);font-size:12px;}
.chips input:checked+label{border-color:var(--inhale);color:#fff;background:rgba(127,211,255,.12);}
.chips input:focus-visible+label{outline:2px solid var(--inhale);outline-offset:2px;}
.hint{font-size:13px;color:var(--muted);line-height:1.5;}
.btn{appearance:none;border:0;border-radius:10px;padding:14px 20px;font-family:var(--display);font-weight:700;font-size:20px;letter-spacing:.12em;text-transform:uppercase;cursor:pointer;background:var(--text);color:#06080b;transition:transform .1s,filter .15s;}
.btn:hover{filter:brightness(1.1);} .btn:active{transform:scale(.98);}
.btn:focus-visible{outline:2px solid var(--inhale);outline-offset:3px;}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line);font-size:16px;padding:10px 16px;}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.row .btn{flex:1 1 auto;}
.meter{position:relative;height:22px;border-radius:6px;background:rgba(255,255,255,.06);border:1px solid var(--line);overflow:hidden;}
.meter i{position:absolute;inset:0 auto 0 0;width:0;background:linear-gradient(90deg,#3b6c88,var(--inhale));transition:width .05s linear;}
.meter i.on{background:linear-gradient(90deg,#3d8a63,var(--good));}
.meter em{position:absolute;top:-3px;bottom:-3px;width:2px;background:var(--led);box-shadow:0 0 6px var(--led);}
input[type=range]{width:100%;accent-color:var(--inhale);}
.big{font-family:var(--display);font-size:64px;font-weight:700;line-height:1;}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.stats div{border:1px solid var(--line);border-radius:10px;padding:12px;display:grid;gap:2px;min-width:0;}
.stats b{font-family:var(--display);font-size:30px;font-variant-numeric:tabular-nums;}
.stats span{font-size:12px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;}
.toast{position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);font-family:var(--display);font-size:22px;letter-spacing:.06em;text-transform:uppercase;padding:10px 18px;border-radius:8px;background:rgba(5,7,10,.75);border:1px solid var(--line);max-width:calc(100% - 32px);text-align:center;opacity:0;transition:opacity .25s;pointer-events:none;}
.toast.show{opacity:1;} .toast.bad{color:#ff7d86;border-color:rgba(255,43,58,.5);} .toast.good{color:var(--good);border-color:rgba(125,255,176,.4);}
.topbtns{position:fixed;top:calc(12px + env(safe-area-inset-top,0px));right:calc(12px + env(safe-area-inset-right,0px));display:flex;gap:8px;}
.icon{appearance:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:rgba(5,7,10,.6);color:var(--text);cursor:pointer;font-family:var(--display);font-size:15px;display:grid;place-items:center;}
.icon:focus-visible{outline:2px solid var(--inhale);}
.holdpad{white-space:nowrap;position:fixed;left:50%;transform:translateX(-50%);bottom:calc(18px + env(safe-area-inset-bottom,0px));border:1px solid var(--line);background:rgba(5,7,10,.65);color:var(--text);border-radius:999px;padding:12px 26px;font-family:var(--display);letter-spacing:.14em;text-transform:uppercase;font-size:16px;touch-action:none;cursor:pointer;}
.holdpad.on{background:rgba(127,211,255,.25);border-color:var(--inhale);}
.fine{font-size:12px;color:#66707b;line-height:1.5;}
a{color:var(--inhale);}
@media (max-width:460px){.how{grid-template-columns:1fr}.card{padding:22px 18px}.stats b{font-size:24px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* ---------- breathing timer ---------- */
.coach{position:fixed;left:50%;transform:translateX(-50%);top:calc(10px + env(safe-area-inset-top,0px));width:min(460px,calc(100% - 300px));display:grid;justify-items:center;gap:4px;pointer-events:none;--c:#c9ccd0;text-shadow:0 2px 18px rgba(0,0,0,.6);}
.coach[data-phase=inhale]{--c:var(--inhale);} .coach[data-phase=recover]{--c:#ff7d86;} .coach[data-phase=exhale]{--c:var(--exhale);}
.coach-phase{font-family:var(--display);font-weight:700;text-transform:uppercase;letter-spacing:.14em;font-size:clamp(20px,3.2vw,30px);color:var(--c);line-height:1;}
.coach-time{font-family:var(--display);font-weight:700;line-height:.9;font-variant-numeric:tabular-nums;color:#fff;display:flex;align-items:baseline;}
.coach-time #cSec{font-size:clamp(72px,11vw,128px);}
.coach-dec{font-size:clamp(32px,4.6vw,54px);color:rgba(255,255,255,.55);}
.coach-unit{font-size:clamp(20px,2.6vw,28px);color:var(--muted);margin-left:4px;}
.coach-track{position:relative;width:100%;height:30px;display:flex;gap:3px;margin-top:4px;}
.coach-seg{position:relative;flex:1 1 0;min-width:0;border-radius:5px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);overflow:hidden;display:flex;align-items:center;justify-content:center;font-family:var(--display);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);}
.coach-seg b{position:absolute;inset:0 auto 0 0;width:0;background:var(--sc);opacity:.32;}
.coach-seg span{position:relative;white-space:nowrap;}
.coach-seg[data-t=inhale]{--sc:var(--inhale);} .coach-seg[data-t=exhale]{--sc:var(--exhale);} .coach-seg[data-t=hold],.coach-seg[data-t=rest]{--sc:#c9ccd0;}
.coach-seg.on{border-color:var(--sc);color:#fff;}
.coach-head{position:absolute;top:-4px;bottom:-4px;width:3px;margin-left:-1.5px;border-radius:2px;background:#fff;box-shadow:0 0 10px #fff;left:0;z-index:2;}
.coach-meta{width:100%;display:flex;justify-content:space-between;gap:12px;font-size:13px;color:#aab3be;font-family:var(--display);letter-spacing:.08em;text-transform:uppercase;}
@media (max-width:640px){
  .coach{top:calc(96px + env(safe-area-inset-top,0px));width:calc(100% - 32px);}
}

/* ---------- account ---------- */
.acct{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--muted);padding-bottom:12px;border-bottom:1px solid var(--line);}
.acct span{min-width:0;overflow-wrap:anywhere;}
.link{appearance:none;background:none;border:0;padding:4px 0;color:var(--inhale);font:inherit;font-weight:700;cursor:pointer;}
.link:focus-visible{outline:2px solid var(--inhale);outline-offset:2px;}
.mystats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.mystats div{border:1px solid var(--line);border-radius:10px;padding:10px 12px;display:grid;gap:2px;min-width:0;}
.mystats b{font-family:var(--display);font-size:24px;font-variant-numeric:tabular-nums;}
.mystats span{font-size:11px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;}
.text{width:100%;font:inherit;font-size:17px;padding:13px 14px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);}
.text:focus{outline:2px solid var(--inhale);outline-offset:1px;border-color:transparent;}
.text.code{font-family:var(--display);font-size:34px;letter-spacing:.45em;text-align:center;padding:10px 0 10px .45em;font-variant-numeric:tabular-nums;}
.sentto{color:var(--text);text-transform:none;letter-spacing:0;font-family:var(--body);}
.err{color:#ff8a92;min-height:0;font-size:14px;}
.err:empty{display:none;}
.gate{display:grid;gap:8px;padding:16px;border-radius:12px;border:1px solid rgba(127,211,255,.4);background:rgba(127,211,255,.08);}
.gate b{font-family:var(--display);font-size:22px;letter-spacing:.04em;text-transform:uppercase;}
.gate span{font-size:14px;color:#c5ccd5;line-height:1.5;}
.saved{font-size:14px;color:var(--good);}
.foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;color:#66707b;}
.btn:disabled{opacity:.5;cursor:default;}
.icon svg{display:block;}
.icon[aria-pressed=true]{opacity:.45;}