:root{
  --navy:#12305A; --ink:#0D2340; --sea:#0A7FC0; --lagoon:#14B8CC; --foam:#EEF6F9; --surface:#FFFFFF;
  --line:#D5E5EC; --muted:#557089; --warn:#C98200; --crit:#D2403A; --ok:#12936F; --water:#14B8CC;
  --display:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;
  --body:"Figtree","Segoe UI",system-ui,-apple-system,sans-serif;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
}
@media (prefers-color-scheme: dark){
  :root{--navy:#8FC7EA;--ink:#E6F1F7;--sea:#4FB3EA;--lagoon:#3FD4E4;--foam:#0B1A2C;--surface:#11243B;--line:#22405E;--muted:#93ACC2;--warn:#F0B03A;--crit:#F0675F;--ok:#3CCB9F;--water:#3FD4E4}
}
html{scroll-padding-top:80px}
*,*::before,*::after{box-sizing:inherit}
body{margin:0;background:var(--foam);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:var(--sea)}
:focus-visible{outline:3px solid var(--lagoon);outline-offset:2px;border-radius:6px}
h1,h2,h3{font-family:var(--display);line-height:1.12;margin:0;color:var(--ink);font-weight:800}
h1{font-size:clamp(1.6rem,4vw,2.1rem);letter-spacing:-.01em}
h2{font-size:1.2rem}
.wrap{max-width:1060px;margin:0 auto;padding:0 20px}
main:focus,main:focus-visible{outline:none}
main{padding:32px 20px calc(110px + env(safe-area-inset-bottom,0px));outline:none}
.loading{color:var(--muted);padding:60px 0;text-align:center}
[hidden]{display:none!important}

/* header */
header.top{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;padding-top:env(safe-area-inset-top,0px)}
.topbar{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;margin-right:auto}
.brand b{font-family:var(--display);font-size:1.2rem;font-weight:800;color:var(--navy);white-space:nowrap}
.brand b span{color:var(--sea)}
.mainnav{display:flex;gap:4px}
.mainnav a{padding:8px 12px;border-radius:10px;text-decoration:none;color:var(--muted);font-weight:600}
.mainnav a[aria-current="page"]{color:var(--ink);background:var(--foam)}
.langsel{border:1.5px solid var(--line);background:var(--surface);color:var(--ink);border-radius:10px;padding:6px 8px;font-weight:600;font-size:.88rem}
.authbrand .langsel{margin-left:auto}
.bell{position:relative;color:var(--navy);display:grid;place-items:center;width:40px;height:40px;border-radius:12px}
.bell:hover{background:var(--foam)}
.dot{position:absolute;top:4px;right:2px;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--crit);color:#fff;font-size:.7rem;font-weight:700;line-height:18px;text-align:center}
.bottomnav{position:fixed;left:0;right:0;bottom:0;z-index:20;background:var(--surface);border-top:1px solid var(--line);display:none;padding-bottom:env(safe-area-inset-bottom,0px)}
.bottomnav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 4px 10px;font-size:.75rem;font-weight:600;text-decoration:none;color:var(--muted)}
.bottomnav a svg{width:22px;height:22px}
.bottomnav a[aria-current="page"]{color:var(--sea)}
@media (max-width:760px){
  .mainnav{display:none}
  .bottomnav:not([hidden]){display:flex}
  .brand b{font-size:1.05rem}
}

/* tank hero */
.hero{display:grid;grid-template-columns:minmax(190px,270px) 1fr;gap:40px;align-items:center}
.gauge{width:100%;max-width:270px;margin:0 auto;display:block}
.water{transition:transform 1.2s cubic-bezier(.3,.7,.3,1)}
.wave{animation:drift 6s linear infinite}
.wave.b{animation-duration:9s;animation-direction:reverse}
@keyframes drift{from{transform:translateX(0)}to{transform:translateX(-160px)}}
@media (prefers-reduced-motion: reduce){.wave{animation:none}.water{transition:none}}
.reading{font-family:var(--display);font-weight:800;font-size:clamp(4rem,12vw,6.4rem);line-height:.9;letter-spacing:-.04em;margin-top:12px}
.reading small{font-size:.4em;letter-spacing:0;margin-left:2px}
.litres{font-size:1.08rem;color:var(--muted);margin:6px 0 16px}
.forecast{font-size:1.22rem;font-weight:600;max-width:32ch;margin:0 0 4px}
.forecast-sub{color:var(--muted);margin:0 0 22px}
.crumbs{margin:0 0 18px;font-size:.92rem}
.crumbs a{text-decoration:none;font-weight:600}

.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:.8rem;font-weight:700;white-space:nowrap}
.pill::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor}
.pill.good{color:var(--ok);background:color-mix(in srgb,var(--ok) 14%,transparent)}
.pill.low{color:var(--warn);background:color-mix(in srgb,var(--warn) 16%,transparent)}
.pill.critical{color:var(--crit);background:color-mix(in srgb,var(--crit) 14%,transparent)}
.pill.info,.pill.unknown{color:var(--sea);background:color-mix(in srgb,var(--sea) 14%,transparent)}

.actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1.5px solid var(--line);background:var(--surface);padding:11px 18px;border-radius:12px;font-weight:700;text-decoration:none;color:var(--ink)}
.btn:hover{border-color:var(--sea)}
.btn.primary{background:var(--sea);border-color:var(--sea);color:#fff}
.btn.primary:hover{filter:brightness(1.08)}
.btn.small{padding:7px 12px;font-size:.88rem;border-radius:10px}
.btn.danger{color:var(--crit)}
.btn.block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed}
.linkbtn{border:0;background:none;color:var(--sea);font-weight:600;padding:0;text-decoration:underline}

.banner{margin:28px 0 0;padding:16px 18px;border-radius:14px;display:flex;gap:14px;align-items:center;flex-wrap:wrap;border-left:6px solid}
.banner.low{background:color-mix(in srgb,var(--warn) 12%,var(--surface));border-color:var(--warn)}
.banner.critical{background:color-mix(in srgb,var(--crit) 10%,var(--surface));border-color:var(--crit)}
.banner.info{background:color-mix(in srgb,var(--sea) 10%,var(--surface));border-color:var(--sea)}
.banner.good{background:color-mix(in srgb,var(--ok) 10%,var(--surface));border-color:var(--ok)}
.banner p{margin:0;flex:1;min-width:220px}
.banner strong{display:block}

.grid2{display:grid;grid-template-columns:1.3fr 1fr;gap:24px;margin-top:36px}
.grid2.even{grid-template-columns:1fr 1fr}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px}
.panel+.panel{margin-top:22px}
.grid2 .panel+.panel{margin-top:0}
.panel .sub{color:var(--muted);margin:4px 0 18px;font-size:.92rem}
.bars{display:grid;grid-template-columns:repeat(7,1fr);gap:10px;align-items:end;height:160px}
.col{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:6px;font-size:.78rem;color:var(--muted)}
.col i{display:block;width:100%;max-width:34px;border-radius:8px 8px 3px 3px;background:var(--lagoon);min-height:4px}
.col.peak i{background:var(--sea)}
.col b{color:var(--ink);font-weight:600}
.spark{width:100%;height:120px;display:block}
.score{display:flex;align-items:baseline;gap:8px}
.score b{font-family:var(--display);font-size:3rem;font-weight:800;line-height:1}
.meter{height:10px;border-radius:6px;background:var(--foam);overflow:hidden;margin:12px 0 16px}
.meter i{display:block;height:100%;border-radius:6px}
.factors{list-style:none;padding:0;margin:0;font-size:.92rem}
.factors li{display:flex;justify-content:space-between;gap:10px;padding:7px 0;border-top:1px solid var(--line)}
.factors li span:last-child{font-weight:600;text-align:right}

.list{list-style:none;margin:0;padding:0}
.list>li{padding:16px 0;border-top:1px solid var(--line);display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.list>li:first-child{border-top:0;padding-top:4px}
.grow{flex:1;min-width:190px}
.muted{color:var(--muted)}
.small{font-size:.88rem}
.strong{font-weight:700}
.empty{padding:26px 10px;text-align:center;color:var(--muted)}
.lede{color:var(--muted);margin:6px 0 24px;max-width:62ch}
.head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.head .lede{margin-bottom:0}

.summary{display:flex;gap:30px;flex-wrap:wrap;margin:0 0 26px}
.summary b{display:block;font-family:var(--display);font-size:2.1rem;font-weight:800;line-height:1.05}
.summary span{color:var(--muted);font-size:.9rem}
.mini{width:140px;height:12px;border-radius:6px;background:var(--foam);overflow:hidden;border:1px solid var(--line)}
.mini i{display:block;height:100%}
.pct{font-family:var(--display);font-weight:800;font-size:1.3rem;width:60px;text-align:right}
.rowlink{color:inherit;text-decoration:none;font-weight:700}
.rowlink:hover{color:var(--sea)}

.track{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:18px 0 8px}
.track div{font-size:.8rem;color:var(--muted)}
.track div::before{content:"";display:block;height:6px;border-radius:4px;background:var(--line);margin-bottom:6px}
.track div.done::before{background:var(--lagoon)}
.track div.now{color:var(--ink);font-weight:700}
.track div.now::before{background:var(--sea)}

/* forms */
.form{display:grid;gap:16px}
.field label,.field .label{display:block;font-weight:600;margin-bottom:6px}
.field .hint{font-size:.85rem;color:var(--muted);margin-top:5px}
.field input[type=text],.field input[type=email],.field input[type=password],.field input[type=number],.field input[type=tel],.field select,.field textarea{width:100%;padding:11px 12px;border:1.5px solid var(--line);border-radius:10px;background:var(--surface)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--sea);outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--sea) 20%,transparent)}
.field input[type=range]{width:100%;accent-color:var(--sea)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check{display:flex;gap:10px;align-items:center;font-weight:500;margin:4px 0}
.check input{width:18px;height:18px;accent-color:var(--sea)}
.error{color:var(--crit);font-weight:600;margin:0}
.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.seg label{border:1.5px solid var(--line);border-radius:12px;padding:12px;cursor:pointer;font-weight:600;font-size:.92rem}
.seg label small{display:block;font-weight:400;color:var(--muted);font-size:.8rem;margin-top:2px}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label:has(input:checked){border-color:var(--sea);background:color-mix(in srgb,var(--sea) 10%,var(--surface))}
.seg label:has(input:focus-visible){outline:3px solid var(--lagoon)}
code,.key{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.86rem}
.key{background:var(--foam);border:1px solid var(--line);padding:3px 8px;border-radius:8px;word-break:break-all}
pre{background:var(--foam);border:1px solid var(--line);border-radius:12px;padding:12px;overflow-x:auto;font-size:.82rem;margin:8px 0 0}

/* auth */
.auth{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;min-height:calc(100vh - 120px);padding-top:10px}
.auth .pitch h1{font-size:clamp(2.2rem,6vw,3.6rem);line-height:1;letter-spacing:-.03em;max-width:12ch}
.auth .pitch p{font-size:1.15rem;color:var(--muted);max-width:40ch}
.steps3{display:grid;gap:12px;margin-top:26px;padding:0;list-style:none}
.steps3 li{display:flex;gap:12px;align-items:baseline}
.steps3 b{font-family:var(--display);color:var(--sea);font-size:1.1rem;min-width:70px}
.authbrand{display:flex;align-items:center;gap:10px;margin-bottom:28px}
.authbrand b{font-family:var(--display);font-size:1.3rem;color:var(--navy)}
.authbrand b span{color:var(--sea)}

/* dialog */
dialog{border:0;border-radius:20px;padding:0;max-width:540px;width:calc(100% - 24px);max-height:calc(100% - 40px);background:var(--surface);color:var(--ink);box-shadow:0 24px 60px rgba(8,30,55,.3)}
dialog::backdrop{background:rgba(8,25,45,.5)}
.dlg{padding:24px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 18px}
.chips button{border:1.5px solid var(--line);background:var(--surface);border-radius:999px;padding:8px 14px;font-weight:600}
.chips button[aria-pressed="true"]{border-color:var(--sea);background:color-mix(in srgb,var(--sea) 12%,var(--surface));color:var(--sea)}
.offer{display:flex;gap:12px;align-items:center;width:100%;text-align:left;border:1.5px solid var(--line);background:var(--surface);border-radius:14px;padding:12px 14px;margin-bottom:8px}
.offer[aria-checked="true"]{border-color:var(--sea);box-shadow:0 0 0 3px color-mix(in srgb,var(--sea) 20%,transparent)}
.offer .price{font-family:var(--display);font-weight:800;font-size:1.15rem;white-space:nowrap}
.tag{white-space:nowrap;display:inline-block;font-size:.72rem;font-weight:700;color:var(--ok);background:color-mix(in srgb,var(--ok) 14%,transparent);padding:2px 7px;border-radius:6px;margin-left:6px}
.dlg-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:18px;flex-wrap:wrap}

.toasts{position:fixed;top:calc(env(safe-area-inset-top,0px) + 74px);right:12px;left:12px;display:flex;flex-direction:column;align-items:flex-end;gap:8px;z-index:60;pointer-events:none}
.toast{pointer-events:auto;max-width:380px;width:100%;background:var(--surface);border:1px solid var(--line);border-left:5px solid var(--sea);border-radius:14px;padding:12px 14px;box-shadow:0 12px 30px rgba(8,30,55,.18);font-size:.92rem}
.toast.critical,.toast.error{border-left-color:var(--crit)}.toast.low{border-left-color:var(--warn)}.toast.good{border-left-color:var(--ok)}

@media (max-width:760px){
  main{padding-top:20px}
  .hero{grid-template-columns:1fr;gap:12px;text-align:center}
  .hero .actions{justify-content:center}
  .forecast{margin-left:auto;margin-right:auto}
  .gauge{max-width:200px}
  .grid2,.grid2.even{grid-template-columns:1fr}
  .auth{grid-template-columns:1fr;gap:28px;min-height:0}
  .seg{grid-template-columns:1fr}
  .row2{grid-template-columns:1fr}
  .list>li .mini{flex:1;width:auto;min-width:60px}
  .summary{gap:20px}
  .summary b{font-size:1.7rem}
}
fieldset.channels{border:0;padding:0;margin:0;min-width:0}
fieldset.channels legend{padding:0;margin-bottom:6px}
.field.channels .check{font-weight:500}
.sortbar{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;margin:-4px 0 10px}
.small-chips{margin:0}
.small-chips button{padding:5px 11px;font-size:.84rem}
.offer-nums{display:flex;flex-direction:column;align-items:flex-end;gap:2px;white-space:nowrap}
.offer .eta{font-size:.82rem;color:var(--muted);font-weight:600}
.panel.declined{border-left:6px solid var(--warn)}
.dlg-foot .btn.primary{flex:1 1 auto;max-width:100%}
.fillpill::before{animation:pulse 1.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
@media (prefers-reduced-motion: reduce){.fillpill::before{animation:none}}
.list>li.empty{display:block;border:0}
.health-ok{margin:0;font-weight:600;color:var(--ok)}
.health-ok::before{content:"✓ ";}