:root{
  --water-bg:#08100c;
  --water-panel:#0d1711;
  --water-panel-2:#101b14;
  --water-fg:#f1efe7;
  --water-body:#c9d0ca;
  --water-muted:#909c94;
  --water-faint:#6f7c73;
  --water-line:rgba(232,237,233,.12);
  --water-line-soft:rgba(232,237,233,.07);
  --water-signal:#d16339;
  --water-cyan:#83b8b5;
  --water-green:#86a86e;
  --water-amber:#b79963;
  --water-rust:#a66a51;
  --water-plot:#d9ded9;
}

*{box-sizing:border-box}
html{background:var(--water-bg);color-scheme:dark}
body.water-prototype-page{
  min-height:100vh;
  margin:0;
  overflow-x:hidden;
  background:
    linear-gradient(90deg,rgba(238,242,239,.018) 1px,transparent 1px),
    var(--water-bg);
  background-size:min(25vw,420px) 100%,auto;
  color:var(--water-fg);
}
.water-prototype-page button,
.water-prototype-page input{font:inherit}
.water-prototype-page button:focus-visible,
.water-prototype-page input:focus-visible,
.water-prototype-page [tabindex]:focus-visible{
  outline:2px solid var(--water-signal);
  outline-offset:3px;
}

.water-prototype-head{
  position:sticky;
  z-index:30;
  top:0;
  min-height:96px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto auto;
  gap:24px;
  align-items:end;
  padding:16px clamp(20px,2.2vw,38px) 14px;
  border-bottom:1px solid var(--water-line);
  background:rgba(8,16,12,.96);
  backdrop-filter:blur(14px);
}
.water-prototype-identity{min-width:0}
.water-back{
  display:inline-block;
  margin-bottom:8px;
  color:var(--water-muted);
  font:650 8.5px/1 var(--mono);
  letter-spacing:.09em;
}
.water-back:hover{color:var(--water-fg)}
.water-prototype-kicker{
  display:block;
  color:var(--water-muted);
  font:650 9px/1 var(--mono);
  letter-spacing:.12em;
}
.water-prototype-head h1{
  margin:7px 0 0;
  font-family:var(--serif);
  font-size:clamp(34px,3.3vw,56px);
  font-weight:400;
  line-height:.88;
  letter-spacing:-.045em;
}
.water-mode-switch{
  align-self:center;
  display:flex;
  padding:3px;
  border:1px solid var(--water-line-soft);
  background:rgba(255,255,255,.015);
}
.water-mode-switch button{
  min-height:34px;
  padding:0 15px;
  border:0;
  background:transparent;
  color:var(--water-faint);
  cursor:pointer;
  font:700 8.5px/1 var(--mono);
  letter-spacing:.1em;
}
.water-mode-switch button[aria-pressed="true"]{
  background:rgba(209,99,57,.11);
  color:var(--water-fg);
  box-shadow:inset 0 -1px 0 rgba(209,99,57,.85);
}
.water-prototype-status{
  align-self:center;
  min-width:148px;
  display:grid;
  gap:7px;
  text-align:right;
  font-family:var(--mono);
}
.water-prototype-status span{
  color:var(--water-faint);
  font-size:8px;
  letter-spacing:.09em;
}
.water-prototype-status strong{
  color:var(--water-body);
  font-size:10px;
  font-weight:600;
}

.water-workbench{
  min-height:calc(100dvh - 132px);
  display:grid;
  grid-template-columns:minmax(0,1fr) clamp(320px,24vw,382px);
}
.water-stage{
  min-width:0;
  display:grid;
  grid-template-rows:minmax(310px,43vh) minmax(470px,1fr);
  border-right:1px solid var(--water-line);
}
.water-panel-head{
  min-height:72px;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(220px,38%);
  gap:24px;
  align-items:center;
  padding:12px clamp(18px,1.8vw,28px);
  border-bottom:1px solid var(--water-line-soft);
}
.water-panel-head span,
.water-control-heading span{
  display:block;
  color:var(--water-muted);
  font:700 8px/1.2 var(--mono);
  letter-spacing:.105em;
}
.water-panel-head h2{
  margin:5px 0 0;
  color:var(--water-fg);
  font-family:var(--serif);
  font-size:clamp(20px,1.8vw,28px);
  font-weight:400;
  line-height:1;
  letter-spacing:-.035em;
}
.water-panel-head p{
  margin:0;
  color:var(--water-faint);
  font:500 9px/1.5 var(--mono);
  text-align:right;
  letter-spacing:.025em;
}
.water-scene-panel,
.water-spectra-panel{min-height:0;background:rgba(8,16,12,.46)}
.water-scene-panel{border-bottom:1px solid var(--water-line)}
.water-scene{
  position:relative;
  height:calc(100% - 72px);
  min-height:238px;
  overflow:hidden;
}
.water-scene svg{
  width:100%;
  height:100%;
  display:block;
}
.scene-atmosphere{fill:rgba(202,212,205,.018)}
.scene-water{fill:rgba(83,139,141,.5)}
.scene-surface{stroke:rgba(215,225,220,.34);stroke-width:1}
.scene-sun circle,
.scene-sun line{fill:none;stroke:#c8b575;stroke-width:2}
.scene-sensor path{fill:rgba(236,239,234,.035);stroke:rgba(236,239,234,.45);stroke-width:1.5}
.scene-sensor circle{fill:var(--water-signal)}
.photon-path{
  fill:none;
  stroke-width:2;
  stroke-linecap:round;
  marker-end:url(#waterArrow);
  transition:opacity .2s ease,stroke-width .2s ease;
}
.photon-down{stroke:rgba(214,197,127,.68)}
.photon-up{stroke:rgba(116,186,184,.82)}
.photon-surface{stroke:rgba(209,99,57,.45);stroke-dasharray:6 8}
.scene-labels text,
.scene-water-logic text,
.scene-excluded{
  fill:var(--water-muted);
  font:600 9px var(--mono);
  letter-spacing:.09em;
}
.scene-water-logic text{fill:rgba(229,234,230,.72);font-size:11px}
.scene-excluded{fill:var(--water-signal)!important;font-size:8px!important}
.constituent{transition:opacity .2s ease}
.constituent-chl{fill:var(--water-green);opacity:var(--chl-opacity,.5)}
.constituent-cdom{fill:none;stroke:var(--water-amber);stroke-width:3;opacity:var(--cdom-opacity,.4)}
.constituent-particle{fill:var(--water-rust);opacity:var(--particle-opacity,.5)}

.water-scene[data-path-focus="atmosphere"] .photon-down{stroke-width:4}
.water-scene[data-path-focus="interface"] .photon-surface{stroke-width:4;opacity:1}
.water-scene[data-path-focus="water"] .scene-water{filter:brightness(1.18)}
.water-scene[data-path-focus="water"] .photon-up{stroke-width:4}
.water-scene[data-path-focus="sensor"] .scene-sensor{filter:brightness(1.6)}
.water-scene[data-path-focus="sensor"] .photon-up{stroke-width:4}

.water-path-steps{
  position:absolute;
  left:18px;
  bottom:14px;
  display:flex;
  gap:3px;
  padding:3px;
  border:1px solid var(--water-line-soft);
  background:rgba(8,16,12,.82);
}
.water-path-steps button{
  min-height:29px;
  padding:0 9px;
  border:0;
  background:transparent;
  color:var(--water-faint);
  cursor:pointer;
  font:700 7.5px/1 var(--mono);
  letter-spacing:.08em;
}
.water-path-steps button[aria-pressed="true"]{
  color:var(--water-fg);
  background:rgba(209,99,57,.12);
}
.water-scene-note{
  position:absolute;
  right:18px;
  bottom:14px;
  width:min(390px,42%);
  padding:11px 13px 12px;
  border:1px solid var(--water-line-soft);
  background:rgba(8,16,12,.88);
  backdrop-filter:blur(6px);
}
.water-scene-note span{
  color:var(--water-signal);
  font:700 7.5px/1 var(--mono);
  letter-spacing:.11em;
}
.water-scene-note p{
  margin:6px 0 0;
  color:var(--water-body);
  font-size:11px;
  line-height:1.45;
}

.water-spectra-panel{
  display:grid;
  grid-template-rows:auto minmax(0,1fr);
}
.water-chart-stack{
  min-height:0;
  display:grid;
  grid-template-rows:repeat(3,minmax(130px,1fr));
}
.water-chart{
  min-height:0;
  margin:0;
  display:grid;
  grid-template-columns:168px minmax(0,1fr);
  border-bottom:1px solid var(--water-line-soft);
}
.water-chart:last-child{border-bottom:0}
.water-chart figcaption{
  display:grid;
  align-content:center;
  gap:6px;
  padding:13px 16px 13px 20px;
  border-right:1px solid var(--water-line-soft);
}
.water-chart figcaption strong{
  color:var(--water-fg);
  font:500 18px/1 var(--mono);
}
.water-chart figcaption span{
  color:var(--water-faint);
  font:650 7px/1.4 var(--mono);
  letter-spacing:.075em;
}
.water-chart figcaption em{
  margin-top:3px;
  color:var(--water-body);
  font:600 9px/1 var(--mono);
  font-style:normal;
}
.water-chart figcaption small{
  color:var(--water-signal);
  font:650 7px/1.2 var(--mono);
  letter-spacing:.055em;
}
.water-chart svg{
  width:100%;
  height:100%;
  min-height:120px;
  display:block;
  touch-action:none;
  cursor:crosshair;
}
.water-grid-line{stroke:var(--water-line-soft);stroke-width:1;vector-effect:non-scaling-stroke}
.water-axis-label{fill:var(--water-faint);font:600 9px var(--mono);letter-spacing:.035em}
.water-spectrum-line{
  fill:none;
  stroke:var(--water-plot);
  stroke-width:2;
  vector-effect:non-scaling-stroke;
}
.water-spectrum-area{fill:rgba(131,184,181,.055)}
.water-probe-line{stroke:var(--water-signal);stroke-width:1;vector-effect:non-scaling-stroke}
.water-probe-dot{fill:var(--water-signal);stroke:var(--water-bg);stroke-width:2;vector-effect:non-scaling-stroke}
.water-hit{fill:transparent;pointer-events:all}

.water-controls{
  min-width:0;
  background:var(--water-panel);
  overflow:auto;
  scrollbar-gutter:stable;
}
.water-control-section{
  padding:17px 17px 18px;
  border-bottom:1px solid var(--water-line-soft);
}
.water-control-heading{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:14px;
  margin-bottom:13px;
}
.water-control-heading small{
  color:var(--water-faint);
  font:550 7.5px/1.35 var(--mono);
  text-align:right;
}
.water-control-heading strong{
  color:var(--water-signal);
  font:650 10px/1 var(--mono);
}
.water-presets{
  display:grid;
  grid-template-columns:1fr 1fr;
  border-top:1px solid var(--water-line-soft);
  border-left:1px solid var(--water-line-soft);
}
.water-presets button{
  min-height:42px;
  padding:7px 8px;
  border:0;
  border-right:1px solid var(--water-line-soft);
  border-bottom:1px solid var(--water-line-soft);
  background:transparent;
  color:var(--water-muted);
  cursor:pointer;
  font:650 7.5px/1.25 var(--mono);
  letter-spacing:.075em;
}
.water-presets button:hover,
.water-presets button[aria-pressed="true"]{
  color:var(--water-fg);
  background:rgba(209,99,57,.085);
}
.water-slider{
  display:grid;
  gap:8px;
  padding:11px 0;
  border-top:1px solid var(--water-line-soft);
}
.water-slider:first-of-type{border-top:0}
.water-slider>span{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
}
.water-slider b,
.water-particle-label b{
  color:var(--water-body);
  font:650 8px/1 var(--mono);
  letter-spacing:.075em;
}
.water-slider output{
  color:var(--water-fg);
  font:600 9px/1 var(--mono);
}
.water-slider small,
.water-particle-label small{
  color:var(--water-faint);
  font:540 7.5px/1.4 var(--mono);
}
.water-slider input[type="range"],
.water-probe-control input[type="range"]{
  width:100%;
  accent-color:var(--water-signal);
}
.water-particle-group{
  margin-top:7px;
  padding-top:12px;
  border-top:1px solid var(--water-line);
}
.water-particle-label{
  display:grid;
  gap:5px;
  padding-bottom:5px;
}
.water-probe-summary{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  margin-top:10px;
  border-top:1px solid var(--water-line-soft);
  border-left:1px solid var(--water-line-soft);
}
.water-probe-summary span{
  display:grid;
  gap:5px;
  padding:9px;
  border-right:1px solid var(--water-line-soft);
  border-bottom:1px solid var(--water-line-soft);
}
.water-probe-summary small{
  color:var(--water-faint);
  font:650 7px/1 var(--mono);
}
.water-probe-summary strong{
  color:var(--water-body);
  font:600 8px/1.25 var(--mono);
}
.water-budget-block+ .water-budget-block{margin-top:15px}
.water-budget-block>strong{
  display:block;
  margin-bottom:8px;
  color:var(--water-faint);
  font:650 7.5px/1 var(--mono);
  letter-spacing:.08em;
}
.water-budget-row{
  display:grid;
  grid-template-columns:70px minmax(0,1fr) 76px;
  gap:8px;
  align-items:center;
  min-height:24px;
}
.water-budget-row span,
.water-budget-row output{
  color:var(--water-muted);
  font:550 7.5px/1 var(--mono);
}
.water-budget-row output{text-align:right}
.water-budget-track{
  height:5px;
  background:rgba(255,255,255,.04);
  overflow:hidden;
}
.water-budget-fill{height:100%;min-width:1px;background:var(--water-body)}
.water-budget-row[data-component="water"] .water-budget-fill{background:var(--water-cyan)}
.water-budget-row[data-component="phyto"] .water-budget-fill{background:var(--water-green)}
.water-budget-row[data-component="cdom"] .water-budget-fill{background:var(--water-amber)}
.water-budget-row[data-component="nap"] .water-budget-fill{background:var(--water-rust)}
.water-budget-row[data-component="particles"] .water-budget-fill{background:var(--water-signal)}
.water-causal p{
  margin:0;
  color:var(--water-body);
  font:550 9px/1.55 var(--mono);
}

.water-workbench[data-mode="iop"] .water-stage{
  grid-template-rows:minmax(235px,31vh) minmax(540px,1fr);
}
.water-workbench[data-mode="iop"] .water-scene-note{
  width:min(520px,50%);
}
.water-workbench[data-mode="iop"] .water-path-steps{opacity:.48}
.water-workbench[data-mode="iop"] .scene-water-logic text{fill:var(--water-fg)}
.water-workbench[data-mode="iop"] .water-constituents{filter:brightness(1.25)}

.water-prototype-foot{
  min-height:36px;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  gap:20px;
  align-items:center;
  padding:0 clamp(20px,2.2vw,38px);
  border-top:1px solid var(--water-line);
  background:#0d1711;
  color:var(--water-faint);
  font:600 7.5px/1 var(--mono);
  letter-spacing:.07em;
}
.water-prototype-foot span:nth-child(2){color:var(--water-body)}
.water-prototype-foot span:last-child{text-align:right}

@media(max-width:1050px){
  .water-workbench{grid-template-columns:minmax(0,1fr) 310px}
  .water-chart{grid-template-columns:138px minmax(0,1fr)}
  .water-scene-note{width:min(330px,44%)}
}

@media(max-width:820px){
  .water-prototype-head{
    position:relative;
    grid-template-columns:minmax(0,1fr) auto;
    min-height:auto;
  }
  .water-prototype-status{display:none}
  .water-workbench{
    min-height:0;
    grid-template-columns:1fr;
  }
  .water-stage{
    grid-template-rows:minmax(300px,46vh) auto;
    border-right:0;
  }
  .water-controls{
    border-top:1px solid var(--water-line);
    overflow:visible;
  }
  .water-spectra-panel{min-height:600px}
  .water-scene-note{width:calc(100% - 36px);right:18px;bottom:54px}
  .water-path-steps{left:18px;right:18px;bottom:12px;justify-content:stretch}
  .water-path-steps button{flex:1;padding-inline:4px}
  .water-prototype-foot{grid-template-columns:1fr auto}
  .water-prototype-foot span:last-child{display:none}
}

@media(max-width:560px){
  .water-prototype-head{
    grid-template-columns:1fr;
    gap:12px;
    align-items:start;
    padding:14px 16px;
  }
  .water-mode-switch{justify-self:start}
  .water-prototype-head h1{font-size:38px}
  .water-stage{grid-template-rows:390px auto}
  .water-panel-head{
    grid-template-columns:1fr;
    gap:7px;
    min-height:84px;
    padding:11px 14px;
  }
  .water-panel-head p{text-align:left}
  .water-scene{height:calc(100% - 84px)}
  .water-scene svg{transform:scale(1.28);transform-origin:55% 52%}
  .water-scene-note{
    left:12px;
    right:12px;
    bottom:53px;
    width:auto;
    padding:9px 10px;
  }
  .water-scene-note p{font-size:10px}
  .water-path-steps{left:12px;right:12px}
  .water-chart{
    grid-template-columns:1fr;
    grid-template-rows:auto minmax(135px,1fr);
  }
  .water-chart figcaption{
    grid-template-columns:auto 1fr auto;
    align-items:baseline;
    gap:9px;
    padding:9px 12px;
    border-right:0;
    border-bottom:1px solid var(--water-line-soft);
  }
  .water-chart figcaption span{align-self:center}
  .water-chart figcaption em{text-align:right}
  .water-controls{display:block}
  .water-control-section{padding-inline:14px}
  .water-prototype-foot{padding:0 14px;font-size:6.8px}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important}
}