@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600&family=Noto+Serif+JP:wght@400;500&display=swap');
:root{color-scheme:dark;--bg:#080808;--ink:#e8e3d9;--muted:#99948a;--gold:#c4aa7d}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:12px 'Noto Sans JP',sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--gold);outline-offset:6px}button:disabled,input:disabled{opacity:.4;cursor:default}header{height:80px;padding:0 46px;display:flex;align-items:center;justify-content:space-between;position:relative;z-index:2}.brand{font:15px 'Noto Serif JP',serif;letter-spacing:.2em;color:#d2c9b7;text-decoration:none}.about-button{border:1px solid #5a554b;background:none;color:#b3aa99;font:italic 12px Georgia,serif;border-radius:50%;width:23px;height:23px}main{margin:0 auto;width:min(100%,1000px);display:grid;grid-template-columns:520px 330px;gap:54px;align-items:center;justify-content:center;padding:0 30px}.instrument{min-width:0}.glass{display:block;position:relative;border:0;padding:0;width:100%;background:#080808;isolation:isolate;overflow:hidden}.glass>img{display:block;width:100%;height:auto}.glass svg,.glass .reflection{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.glass>img:first-child{mix-blend-mode:lighten}.glass svg{z-index:1}.glass .reflection{z-index:2;mix-blend-mode:screen;opacity:.65}.glass:after{content:'';position:absolute;inset:0;z-index:3;pointer-events:none;box-shadow:inset 22px 0 20px -15px #080808,inset -22px 0 20px -15px #080808,inset 0 15px 20px -15px #080808,inset 0 -25px 25px -15px #080808}.controls{text-align:center;padding:20px 0}.state{color:#a49b89;font-size:10px;letter-spacing:.09em;margin:0 0 16px}.time{font:54px Georgia,serif;font-variant-numeric:tabular-nums;letter-spacing:.07em;line-height:1.15;color:#e9e2d4}.time span{color:#706650;padding:0 3px}.session-label{color:#9c9383;font-size:10px;min-height:20px;line-height:1.9;margin:15px 0 29px;overflow-wrap:anywhere}.actions{display:flex;justify-content:center;gap:12px}.primary{border:1px solid #a88c5e;border-radius:5px;background:linear-gradient(180deg,#d1b887,#b39562);color:#201b12;min-width:195px;height:47px;font-weight:500;letter-spacing:.12em;box-shadow:inset 0 1px 0 #fff3,0 3px 8px #0008}.primary span{margin-left:9px}.primary:hover{filter:brightness(1.1)}.primary:active,.reset:active{transform:translateY(1px)}.reset{background:transparent;border:1px solid #393329;color:#b7a98d;border-radius:5px;width:47px;height:47px;font-size:23px}.presets{margin:39px -8px 0;display:grid;grid-template-columns:repeat(5,1fr);gap:2px}.presets button{border:1px solid transparent;border-radius:5px;padding:11px 2px;background:transparent;color:#918a7d;position:relative}.presets b{font:21px Georgia,serif;display:block;white-space:nowrap}.presets b span{font:8px 'Noto Sans JP',sans-serif;margin-left:3px}.presets small{font-size:8px;display:block;margin-top:7px}.presets .selected{color:#e1c796;background:#c4aa7d08;border-color:#786443}.presets button:hover:not(:disabled){color:#e1c796;background:#c4aa7d08}.options{margin-top:27px;border-top:1px solid #27241f;text-align:left}.options summary{list-style:none;cursor:pointer;padding:17px 2px;color:#9e9687;font-size:10px;display:flex;justify-content:space-between}.options summary::-webkit-details-marker{display:none}.options summary span{color:#b9a37c}.options[open] summary span{transform:rotate(45deg)}.option-content{padding:4px 2px 10px}.custom{display:flex;justify-content:space-between;align-items:center;font-size:10px;color:#b4ac9e}.custom>div{display:flex;align-items:center;gap:9px}input[type=number]{width:75px;text-align:center}input[type=number],#purpose{border:1px solid #39342a;border-radius:4px;background:#11110f;color:#dcd2bf;padding:10px}input::placeholder{color:#6d695f}.purpose-label{display:flex;justify-content:space-between;color:#b4ac9e;font-size:10px;margin:11px 0}.purpose-label span{color:#716c61;font-size:9px}#purpose{width:100%;font-size:11px}.validation{color:#e1a693;font-size:10px;min-height:8px;margin:4px 0}.option-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:10px;color:#a49a88}.option-bottom label{display:flex;align-items:center;gap:6px}input[type=checkbox]{accent-color:#bda16e}.text-button{background:none;border:0;color:#ac9875;font-size:10px;padding:5px}.hint{font-size:9px;line-height:1.9;color:#7e776a}.option-content .hint{margin-top:15px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}#stream{display:none}.running #stream{display:block;animation:fall .5s linear infinite}@keyframes fall{to{stroke-dashoffset:-16}}dialog{width:calc(100% - 40px);max-width:450px;border:1px solid #494031;border-radius:9px;padding:36px;background:#141310;color:#d4cbb8;box-shadow:0 30px 90px #000a}dialog::backdrop{background:#000b;backdrop-filter:blur(7px)}dialog h2{font:23px 'Noto Serif JP',serif;letter-spacing:.1em;margin:5px 0 25px}dialog p{font-size:12px;line-height:2.2;color:#aca391}dialog a{color:#c6ac7e;font-size:10px}.close{position:absolute;right:15px;top:13px;color:#a49a87;border:0;background:none;padding:8px}
@media(min-width:1100px){main{min-height:calc(100svh - 145px)}.glass{max-width:460px;margin:auto}}
@media(max-width:900px) and (min-width:601px){main{grid-template-columns:minmax(0,430px) 290px;gap:15px;padding:0 24px}.time{font-size:48px}.presets b{font-size:19px}}
@media(max-width:600px){header{height:60px;padding:0 24px}.brand{font-size:13px}main{display:flex;flex-direction:column;gap:0;padding:0 25px;max-width:420px}.instrument{width:100%;display:flex;justify-content:center}.glass{width:min(100%,285px);margin-top:-3px}.controls{width:100%;padding:0 0 15px;margin-top:-6px;position:relative;z-index:3}.state{font-size:9px;margin:0 0 9px}.time{font-size:45px}.session-label{margin:10px 0 21px;font-size:10px}.primary{height:45px;min-width:190px;font-size:11px}.reset{height:45px;width:45px}.presets{margin:25px -5px 0}.presets b{font-size:21px}.presets button{padding:10px 2px}.options{margin-top:19px}}
@media(max-width:600px) and (max-height:780px){.glass{width:235px}.state{margin-bottom:6px}.time{font-size:40px}.session-label{margin-bottom:16px}.presets{margin-top:18px}header{height:54px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}
/* Frameless glass; the photograph, reservoirs and particles scale as one object. */
.instrument{position:relative;overflow:hidden;touch-action:pan-y}.glass{transform-origin:50% 48%;will-change:transform;touch-action:none;user-select:none;-webkit-user-select:none}.glass img{pointer-events:none;-webkit-user-drag:none}.glass canvas{position:absolute;inset:0;width:100%;height:100%;z-index:2;pointer-events:none}.glass .reflection{z-index:3;opacity:.48}.zoom-tools{position:relative;z-index:5;display:flex;align-items:center;justify-content:center;gap:15px;margin-top:0}.zoom-tools button{border:1px solid #302c24;color:#b4aa96;background:#10100ecc;min-width:30px;height:29px;border-radius:4px;font-size:15px}.zoom-tools #zoomReset{font:10px 'Noto Sans JP',sans-serif;width:49px;border-color:transparent;background:transparent;letter-spacing:.03em}.zoom-hint{position:relative;z-index:5;color:#7e776b;font-size:8px;text-align:center;letter-spacing:.03em;margin:8px 0 12px;pointer-events:none}.glass svg #stream{display:none!important}@media(min-width:1100px){.glass{max-width:430px}}@media(max-width:600px){.instrument{display:block}.glass{margin:0 auto;max-width:265px}.controls{margin-top:12px}.zoom-hint{margin-bottom:0}.zoom-tools{margin-top:4px}}@media(max-width:600px) and (max-height:780px){.glass{width:215px}.controls{margin-top:10px}.zoom-hint{font-size:7px}}
header {
  height: auto;
  justify-content: center;
  padding: clamp(26px, 4vw, 54px) 44px 10px;
}

.page-title {
  margin: 0;
  text-align: center;
}

.brand {
  display: block;
  font-size: clamp(34px, 10vw, 78px);
  font-weight: 500;
  line-height: 1.16;
  letter-spacing: .08em;
  padding-inline-start: .08em;
  color: #fff0d6;
  text-shadow: 0 0 32px #c4aa7d30;
  white-space: nowrap;
}

.about-button {
  position: absolute;
  right: clamp(12px, 3vw, 46px);
  top: 14px;
}

@media (min-width: 1100px) {
  main { min-height: calc(100svh - 220px); }
}

@media (max-width: 600px) {
  header {
    padding-block: 16px 6px;
  }

  .glass {
    width: min(100%, clamp(150px, calc((100svh - 405px) / 1.5), 265px));
  }

  .zoom-hint {
    margin-top: 5px;
  }

  .controls {
    margin-top: 8px;
    padding-bottom: 8px;
  }

  .state { margin-bottom: 5px; }
  .session-label { margin: 6px 0 12px; }
  .presets { margin-top: 12px; }
  .presets button { padding-block: 7px; }
  .presets small { margin-top: 4px; }
  .options { margin-top: 10px; }
  .options summary { padding-block: 12px; }
}

/* The elapsed scale is aligned with the physical glass. */
body {
  background: radial-gradient(ellipse at 50% 32%, #141612 0%, #080808 58%);
}

.instrument {
  isolation: isolate;
}

.elapsed-scale {
  --elapsed: 0%;
  position: absolute;
  inset-block: 10% 9%;
  right: 2%;
  width: 32px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  justify-items: center;
  gap: 10px;
  color: #a6a192;
  font: 10px/1.3 ui-monospace, monospace;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}

.scale-label {
  font: 9px/1.3 'Noto Sans JP', sans-serif;
  letter-spacing: .12em;
}

.scale-track {
  position: relative;
  width: 13px;
  background: repeating-linear-gradient(to bottom, #ada18b65 0 1px, transparent 1px 9px);
  border-left: 1px solid #524e43;
}

.scale-track i {
  position: absolute;
  inset: 0 auto auto -1px;
  width: 1px;
  height: var(--elapsed);
  background: #e3b46f;
}

.scale-track i::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: -4px;
  width: 10px;
  height: 2px;
  background: #ffe0a3;
  box-shadow: 0 0 10px #e3b46faa;
}

.time {
  font-family: ui-monospace, 'SF Mono', monospace;
  font-weight: 400;
  letter-spacing: -.07em;
  color: #fff2d9;
}

.time span {
  padding-inline: 5px;
  color: #9e8057;
}

.primary {
  background: #f2d29b;
  border-color: #f2d29b;
  box-shadow: none;
  border-radius: 3px;
}

.running .primary {
  color: #ffdda6;
  background: #201a11;
  border-color: #796343;
}

.presets button {
  border-radius: 2px;
}

.presets .selected {
  border-color: transparent;
  border-bottom-color: #d9b780;
  background: linear-gradient(transparent, #c4aa7d13);
}

@media (max-width: 600px) {
  .glass {
    width: min(100%, clamp(150px, calc((100svh - 305px) / 1.5), 325px));
    max-width: none;
  }

  .controls {
    margin-top: 0;
  }

  .time { font-size: clamp(38px, 12vw, 51px); }
  .elapsed-scale { right: 0; }
}

@media (min-width: 1100px) {
  .glass { max-width: min(490px, calc((100svh - 160px) / 1.5)); }
}

.session-label:empty {
  display: none;
}

.time {
  margin-bottom: 12px;
}