:root{
  --bg:#eaf7f9;--bg2:#fff;--fg:#10343d;--mut:#5b8691;--line:#cfe6ea;--card:#fff;
  --a:#1fa8d6;--a2:#15889f;--mint:#4fc9a8;--danger:#d2455b;
  --w1:#6fd3e6;--w2:#1f9fc7;--wb:rgba(111,211,230,.45);--dropbg:rgba(255,255,255,.65);--dropline:#4db9d3;
  --track:150px;--lbl:24px;
  --r:18px;color-scheme:light;
}
:root[data-theme=dark]{
  --bg:#0a1f26;--bg2:#10303a;--fg:#e8f6f8;--mut:#8db6c0;--line:#1e4652;--card:#10303a;
  --a:#4cc3ea;--a2:#7ad8f2;--w1:#43bfdc;--w2:#1678a3;--wb:rgba(67,191,220,.35);--dropbg:rgba(255,255,255,.06);--dropline:#4cc3ea;
  color-scheme:dark;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{background:radial-gradient(1200px 600px at 80% -10%,rgba(124,198,214,.55),transparent 60%) fixed,var(--bg)}
body{margin:0;color:var(--fg);font:16px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;min-height:100vh;min-height:100dvh}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.app{max-width:520px;margin:0 auto;min-height:100vh;min-height:100dvh;padding:0 16px calc(88px + env(safe-area-inset-bottom));position:relative}
.top{display:flex;align-items:center;gap:10px;padding:calc(14px + env(safe-area-inset-top)) 0 6px}
.logo{border-radius:11px;box-shadow:0 3px 10px rgba(21,136,159,.3)}
.top h1{margin:0;font-size:22px;letter-spacing:-.01em;flex:1}
.pill{border:0;background:var(--a);color:#fff;font:inherit;font-weight:600;padding:7px 14px;border-radius:999px;cursor:pointer}
h2{font-size:20px;margin:18px 0 12px}
h3{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--mut);margin:22px 0 10px}
h4{font-size:14px;margin:16px 0 8px}

.drop-wrap{position:relative;width:min(62vw,260px);margin:6px auto 0}
.drop{width:100%;display:block;filter:drop-shadow(0 12px 22px rgba(31,159,199,.25))}
.drop-bg{fill:var(--dropbg)}
.drop-line{fill:none;stroke:var(--dropline);stroke-width:3;stroke-linejoin:round}
.s1{stop-color:var(--w1)}.s2{stop-color:var(--w2)}
.water{transform:translateY(250px);transition:transform 1s cubic-bezier(.3,.8,.3,1)}
.wave path{fill:var(--wb)}.wave-a path{fill:url(#wg)}
.wave-a{animation:flow 6s linear infinite}.wave-b{animation:flow 9s linear infinite reverse}
@keyframes flow{from{transform:translateX(0)}to{transform:translateX(-200px)}}
.drop-text{position:absolute;left:0;right:0;top:52%;text-align:center;color:var(--fg);transition:color .6s}
.drop-wrap.full .drop-text{color:#fff;text-shadow:0 1px 8px rgba(8,60,80,.55)}
.drop-text b{display:block;font-size:clamp(34px,11vw,48px);line-height:1;letter-spacing:-.02em}
.drop-text span{font-size:14px;opacity:.95}
.status{text-align:center;margin:12px 0 0;font-weight:600;color:var(--a2)}
.status.ok{color:#1e9c7a}
:root[data-theme=dark] .status.ok{color:#5fe0bd}

.presets{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.preset{border:1px solid var(--line);background:var(--card);color:var(--fg);border-radius:var(--r);padding:14px 4px 10px;font:inherit;font-weight:700;font-size:18px;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;gap:2px;transition:transform .12s,background .12s;min-height:60px}
.preset small{font-weight:500;font-size:12px;color:var(--mut)}
.preset:hover{border-color:var(--a)}.preset:active{transform:scale(.95);background:var(--a);color:#fff}.preset:active small{color:#fff}
.row{display:flex;align-items:center;gap:8px;margin-top:12px}.row.wrap{flex-wrap:wrap}
input,select{font:inherit;color:var(--fg);background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:11px 12px;min-width:0;width:100%}
input:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible,.switch input:focus-visible+.knob{outline:3px solid var(--a);outline-offset:2px}
.row input{flex:1}.stepper input{text-align:center;font-size:20px;font-weight:700;flex:0 1 120px}
.unit{color:var(--mut);min-width:26px}
.btn{border:0;background:var(--a);color:#fff;font:inherit;font-weight:700;border-radius:12px;padding:11px 18px;cursor:pointer;white-space:nowrap;min-height:44px}
.btn.ghost{background:transparent;color:var(--a2);border:1px solid var(--a)}
.btn.danger{background:transparent;color:var(--danger);border:1px solid var(--danger)}
.round{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--bg2);color:var(--fg);font-size:24px;line-height:1;cursor:pointer}
.log{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.log li{display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:10px 12px}
.log .time{color:var(--mut);font-variant-numeric:tabular-nums;flex:1}
.log .empty{color:var(--mut);justify-content:center;border-style:dashed;padding:18px}
.x{border:0;background:transparent;color:var(--mut);font-size:24px;line-height:1;width:36px;height:36px;border-radius:50%;cursor:pointer}.x:hover{color:var(--danger)}

.chart{position:relative;display:flex;gap:8px;align-items:flex-end;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 12px 0}
.col{flex:1;display:flex;flex-direction:column;align-items:center;min-width:0}
.val{font-size:11px;color:var(--mut);height:18px;white-space:nowrap}
.track{width:100%;height:var(--track);display:flex;align-items:flex-end;justify-content:center}
.bar{width:70%;max-width:34px;min-height:2px;border-radius:9px 9px 3px 3px;background:linear-gradient(var(--w1),var(--w2));transition:height .6s}
.bar.full{background:linear-gradient(#7be3c4,var(--mint))}
.lbl{height:var(--lbl);line-height:var(--lbl);font-size:12px;color:var(--mut);text-transform:capitalize}
.goal-line{position:absolute;left:8px;right:8px;border-top:2px dashed var(--a);opacity:.7;pointer-events:none}
.goal-line span{position:absolute;right:0;top:-18px;font-size:11px;color:var(--a2);background:var(--card);padding:0 4px;border-radius:4px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:12px 8px;text-align:center}
.stat b{display:block;font-size:18px;color:var(--a2)}.stat span{font-size:12px;color:var(--mut)}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:2px 16px 16px;margin:14px 0}
.hint{color:var(--mut);font-size:13px;margin:8px 0 0}
a{color:var(--a2)}
.seg{display:flex;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:3px;gap:3px}
.seg button{flex:1;border:0;background:transparent;color:var(--fg);font:inherit;padding:9px 6px;border-radius:9px;cursor:pointer;min-height:40px}
.seg button[aria-pressed=true]{background:var(--a);color:#fff;font-weight:700}
.switch{display:flex;align-items:center;gap:12px;cursor:pointer;margin-top:4px}
.switch input{position:absolute;opacity:0;width:1px;height:1px}
.knob{width:46px;height:28px;border-radius:999px;background:var(--line);position:relative;transition:background .2s;flex:none}
.knob:after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:transform .2s;box-shadow:0 1px 4px rgba(0,0,0,.3)}
.switch input:checked+.knob{background:var(--a)}.switch input:checked+.knob:after{transform:translateX(18px)}
.grid3{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:10px;margin-top:14px}.grid3.off{opacity:.45;pointer-events:none}
.grid3 label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--mut)}
.about .banner{width:100%;height:auto;border-radius:14px;margin-bottom:10px}

.tabs{position:fixed;left:0;right:0;bottom:0;display:flex;justify-content:center;gap:4px;padding:8px 12px calc(8px + env(safe-area-inset-bottom));background:color-mix(in srgb,var(--bg2) 88%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line)}
.tabs button{flex:1;max-width:170px;border:0;background:transparent;color:var(--mut);font:inherit;font-size:12px;display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px;border-radius:14px;cursor:pointer;min-height:52px}
.tabs svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.tabs button.on{color:var(--a2);background:color-mix(in srgb,var(--a) 14%,transparent);font-weight:700}
.tabs button.on svg{fill:color-mix(in srgb,var(--a) 25%,transparent)}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(88px + env(safe-area-inset-bottom));background:#10343d;color:#fff;border-radius:999px;padding:10px 12px 10px 18px;display:flex;align-items:center;gap:12px;box-shadow:0 8px 24px rgba(0,0,0,.25);max-width:92vw;z-index:5;font-size:15px}
.toast button{border:0;background:rgba(255,255,255,.18);color:#fff;font:inherit;font-weight:700;border-radius:999px;padding:6px 12px;cursor:pointer}
:root[data-theme=dark] .toast{background:#e8f6f8;color:#0a1f26}:root[data-theme=dark] .toast button{background:rgba(0,0,0,.12);color:#0a1f26}

@media (min-width:700px){
  .app{margin-top:24px;margin-bottom:24px;min-height:calc(100vh - 48px);border-radius:28px;background:color-mix(in srgb,var(--bg2) 70%,transparent);border:1px solid var(--line);box-shadow:0 20px 60px rgba(21,136,159,.18);padding-bottom:96px}
  .tabs{position:sticky;bottom:12px;margin:24px -4px 0;border:1px solid var(--line);border-radius:22px;max-width:none;left:auto;right:auto}
  .toast{bottom:104px}
}
@media (prefers-reduced-motion:reduce){.wave-a,.wave-b{animation:none}.water,.bar,.preset{transition:none}}
.nojs{padding:24px;text-align:center}
.toast span{white-space:nowrap}