/* Nightfall — UI styles: tokens, post-process overlays, HUD, screens */
:root{
  color-scheme: dark;
  --ink:#07090c;          /* night ground */
  --bone:#d9d3c4;         /* primary text */
  --ash:#8b928c;          /* secondary text */
  --line:rgba(217,211,196,.22);
  --foxfire:#bfe9cf;      /* glow of the stones */
  --blood:#b23a2c;        /* danger */
  --threat:0;             /* 0..1, driven from JS */
  --display:"IM Fell English SC","IM Fell English",Georgia,"Times New Roman",serif;
  --serif:"IM Fell English",Georgia,"Times New Roman",serif;
  --mono:"Cutive Mono",ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%;margin:0;background:var(--ink);color:var(--bone);overflow:hidden;overscroll-behavior:none;touch-action:none}
body{font-family:var(--serif);-webkit-font-smoothing:antialiased;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent}
/* The root gets .touch while the on-screen controls are in use (index.html, touch.js) */
.touch .desk-only,html:not(.touch) .touch-only{display:none!important}
#game{position:fixed;inset:0;width:100%;height:100%;display:block}

/* Post-process overlays (cheap CSS instead of shader passes) */
.fx{position:fixed;inset:0;pointer-events:none}
#vignette{background:radial-gradient(ellipse 80% 75% at 50% 50%,transparent calc(42% - var(--threat)*20%),rgba(0,0,0,.5) 80%,rgba(0,0,0,.92) 100%)}
#threatTint{background:radial-gradient(ellipse at center,transparent 35%,rgba(96,10,6,.6) 100%);opacity:calc(var(--threat)*var(--threat)*.85)}
#grain{opacity:.07;background-size:180px 180px;animation:grain .7s steps(6) infinite}
@keyframes grain{0%{background-position:0 0}17%{background-position:-41px 23px}33%{background-position:57px -44px}50%{background-position:-13px 71px}67%{background-position:77px 9px}83%{background-position:-60px -30px}100%{background-position:0 0}}
#flash{opacity:0;background:#fff}

/* HUD */
#hud{position:fixed;inset:0;pointer-events:none;font-family:var(--mono);z-index:5}
#stones{position:absolute;top:calc(18px + env(safe-area-inset-top,0px));left:calc(20px + env(safe-area-inset-left,0px));display:flex;align-items:center;gap:14px;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--ash);text-shadow:0 0 8px #000}
.pips{display:flex;gap:10px}
.pips i{display:block;width:9px;height:9px;transform:rotate(45deg);border:1px solid rgba(191,233,207,.5);transition:background .6s,box-shadow .6s}
.pips i.on{background:var(--foxfire);box-shadow:0 0 10px 2px rgba(191,233,207,.55)}
#stoneCount{color:var(--bone);font-variant-numeric:tabular-nums;letter-spacing:.08em}
#stamina{position:absolute;left:50%;bottom:calc(28px + env(safe-area-inset-bottom,0px));width:min(220px,50vw);height:3px;transform:translateX(-50%);background:rgba(217,211,196,.13);transition:opacity .8s}
#staminaFill{height:100%;background:var(--bone);opacity:.75;transform-origin:left center}
#stamina.tired #staminaFill{background:var(--blood);opacity:1}
#subtitle{position:absolute;left:50%;bottom:calc(66px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);width:min(40rem,calc(100% - 32px));text-align:center;font-family:var(--serif);font-style:italic;font-size:clamp(17px,2.1vw,22px);line-height:1.45;color:var(--bone);text-shadow:0 1px 14px #000,0 0 3px #000;opacity:0;transition:opacity .6s}
#subtitle.on{opacity:1}
#message{position:absolute;left:50%;top:21%;transform:translateX(-50%);width:min(36rem,calc(100% - 32px));text-align:center;font-family:var(--display);font-size:clamp(18px,2.3vw,26px);letter-spacing:.05em;color:var(--bone);text-shadow:0 0 18px #000,0 0 4px #000;opacity:0;transition:opacity .9s}
#message.on{opacity:.92}

/* Touch controls: move stick (drag past the dashed ring to run), flashlight, pause */
#touch{position:absolute;inset:0;pointer-events:auto;touch-action:none}
html:not(.touch) #touch{display:none}
#stick{position:absolute;left:calc(88px + env(safe-area-inset-left,0px));top:calc(100% - 88px - env(safe-area-inset-bottom,0px));width:96px;height:96px;margin:-48px 0 0 -48px;border:1px solid var(--line);border-radius:50%;background:rgba(7,9,12,.28);opacity:.45;transition:opacity .4s}
#stick::before{content:"";position:absolute;inset:-20px;border:1px dashed rgba(217,211,196,.18);border-radius:50%}
#stick.on{opacity:1;transition:none}
#knob{position:absolute;left:50%;top:50%;width:44px;height:44px;margin:-22px 0 0 -22px;border-radius:50%;background:rgba(217,211,196,.3);box-shadow:0 0 0 1px rgba(217,211,196,.35)}
#stick.run::before{border-style:solid;border-color:rgba(191,233,207,.55)}
#stick.run #knob{background:rgba(191,233,207,.6);box-shadow:0 0 16px 2px rgba(191,233,207,.45)}
.tbtn{position:absolute;display:grid;place-items:center;padding:0;color:var(--bone);background:rgba(7,9,12,.35);border:1px solid var(--line);border-radius:50%}
.tbtn svg{width:26px;height:26px}
.tbtn svg,kbd.icon svg{display:block;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
#lightBtn{right:calc(28px + env(safe-area-inset-right,0px));bottom:calc(28px + env(safe-area-inset-bottom,0px));width:64px;height:64px;transition:color .2s,background .2s}
#lightBtn[aria-pressed=true]{background:rgba(255,240,216,.1)}
#lightBtn[aria-pressed=false]{color:var(--ash)}
#lightBtn[aria-pressed=false] .beam{opacity:0}
#pauseBtn{top:calc(6px + env(safe-area-inset-top,0px));right:calc(10px + env(safe-area-inset-right,0px));width:44px;height:44px;background:none;border:0;color:var(--ash)}
/* Keep HUD text clear of the thumbs */
.touch #subtitle{width:min(40rem,calc(100% - 320px))}
@media (orientation:portrait){
  .touch #subtitle{bottom:calc(196px + env(safe-area-inset-bottom,0px));width:calc(100% - 32px)}
  .touch #stamina{bottom:calc(176px + env(safe-area-inset-bottom,0px))}
}

#debug{position:fixed;top:12px;right:12px;z-index:30;font:12px/1.45 var(--mono);color:#a8e6c4;background:rgba(0,0,0,.55);padding:6px 9px;white-space:pre;pointer-events:none}

/* Menu / pause / end screens: copy on the left over a scrim, the forest (and, on the start screen, a foxfire stone) on the right */
.screen{position:fixed;inset:0;z-index:20;display:flex;overflow-y:auto;overscroll-behavior:contain;touch-action:pan-y;padding-inline:clamp(16px,7vw,104px);padding-block:max(28px,env(safe-area-inset-top,0px)) max(28px,env(safe-area-inset-bottom,0px));background:linear-gradient(90deg,rgba(7,9,12,.95) 0%,rgba(7,9,12,.84) 33%,rgba(7,9,12,.36) 58%,rgba(7,9,12,0) 80%)}
.sheet{max-width:40rem;margin-block:auto;display:grid;gap:clamp(18px,2.4vh,26px)}   /* auto margins, not align-items, so a tall sheet can still scroll to its top */
.eyebrow{margin:0;font-family:var(--mono);font-size:clamp(12px,1.05vw,15px);letter-spacing:.2em;text-transform:uppercase;color:var(--ash)}
h1,h2{margin:0;font-family:var(--display);font-weight:400;line-height:.86;text-wrap:balance;text-shadow:0 2px 34px rgba(0,0,0,.65)}
h1{margin-left:-.03em;font-size:clamp(3.4rem,min(13vw,23vh),10.4rem);letter-spacing:.01em}
h2{font-size:clamp(2.6rem,min(9vw,15vh),7rem)}
.lede{margin:0;max-width:22em;font-size:clamp(17px,1.75vw,24px);line-height:1.45;color:var(--bone)}
.lede em{color:var(--foxfire)}
/* Start / Resume / Restart: a foxfire-lit button whose edge breathes */
.btn{justify-self:start;min-width:13.75rem;margin-block:10px;padding:12px 40px 14px;font:clamp(21px,1.9vw,26px)/1 var(--display);letter-spacing:.12em;color:var(--foxfire);background:rgba(191,233,207,.06);border:1px solid rgba(191,233,207,.5);border-radius:2px;cursor:pointer;animation:beacon 2.8s ease-in-out infinite;transition:background .3s,color .3s,border-color .3s}
@media (hover:hover){.btn:hover{background:rgba(191,233,207,.14);color:#e9fff2;border-color:var(--foxfire)}}   /* hover only where it exists: iOS can swallow a tap that changes things on hover */
.btn:active{background:rgba(191,233,207,.2)}
.btn:focus-visible{outline:1px solid var(--foxfire);outline-offset:5px}
@keyframes beacon{0%,100%{border-color:rgba(191,233,207,.34);box-shadow:0 0 12px rgba(191,233,207,.06)}50%{border-color:rgba(191,233,207,.72);box-shadow:0 0 30px rgba(191,233,207,.22)}}
.keys{margin:4px 0 0;display:grid;grid-template-columns:repeat(2,auto);justify-content:start;gap:12px 40px;font-family:var(--mono);font-size:13px;color:var(--ash)}
.keys div{display:flex;align-items:center;gap:10px}
.keys dt{display:flex;gap:4px}
.keys dd{margin:0;letter-spacing:.05em}
kbd{white-space:nowrap;min-width:1.9em;padding:3px 6px 2px;text-align:center;font-family:var(--mono);font-size:12px;color:var(--bone);border:1px solid var(--line);border-bottom-width:2px;border-radius:3px;background:rgba(217,211,196,.05)}
kbd.icon{padding:2px 5px}
kbd.icon svg{width:16px;height:16px}
.note{margin:-8px 0 0;font-family:var(--mono);font-size:12px;letter-spacing:.05em;color:#646b66}
/* Pause: how the night is going */
.tally{margin:0;display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-family:var(--mono);font-size:clamp(13px,1.05vw,15px);letter-spacing:.16em;text-transform:uppercase;color:var(--ash)}
.tally .pips{gap:12px}
.tally b{font-weight:400;color:var(--bone);letter-spacing:.08em;font-variant-numeric:tabular-nums}
.stats{margin:0;display:flex;flex-wrap:wrap;gap:12px 36px}
.stats div{display:grid;gap:4px}
.stats dt{font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--ash)}
.stats dd{margin:0;font-family:var(--display);font-size:30px;font-variant-numeric:tabular-nums}
#end.lose h1{color:var(--blood)}
#end.win h1{color:var(--foxfire)}
#start h1{animation:flicker 4.5s linear 1}
@keyframes flicker{0%{opacity:0}6%{opacity:1}7%{opacity:.25}9%{opacity:1}52%{opacity:1}53%{opacity:.45}54%{opacity:1}100%{opacity:1}}
/* Portrait phones: copy along the bottom, the stone above it */
@media (max-width:640px){
  .sheet{margin-block:auto 0}
  .screen{background:linear-gradient(0deg,rgba(7,9,12,.96) 0%,rgba(7,9,12,.88) 55%,rgba(7,9,12,.5) 66%,rgba(7,9,12,0) 80%)}
  .keys{grid-template-columns:auto;gap:10px}
  .btn{justify-self:stretch;margin-block:4px}
}
/* Phones held sideways: fit the start screen in one short view */
@media (orientation:landscape) and (max-height:540px){
  .screen{padding-block:max(16px,env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-bottom,0px))}
  .sheet{max-width:46rem;gap:10px}
  h1{font-size:clamp(2.6rem,14vh,4.4rem)}
  h2{font-size:clamp(2.2rem,11vh,3.4rem)}
  .lede{max-width:34em;font-size:15px;line-height:1.42}
  .keys{gap:7px 28px;font-size:12px}
  .btn{min-width:0;margin-block:2px;padding:9px 30px 11px;font-size:20px}
  .note{margin-top:0}
}
@media (prefers-reduced-motion:reduce){#grain,.btn,#start h1{animation:none}}