:root{color-scheme:dark;--bg:#070d16;--surface:#101a29;--raised:#16263b;--line:#263951;--text:#f4f7fc;--muted:#a8b7cb;--blue:#76bdff;--gold:#f2c54b;--red:#ff9399;font:16px/1.55 system-ui,-apple-system,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}header{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px max(20px,calc((100vw - 1080px)/2));border-bottom:1px solid var(--line)}a{color:var(--blue)}.brand{display:flex;gap:13px;align-items:center;text-decoration:none}.brand strong{font-size:25px}.brand small{display:block;font-size:14px;color:var(--blue)}.brand img{object-fit:contain}.blue{color:var(--blue)}.gold{color:var(--gold)}main{max-width:1080px;margin:auto;padding:28px 20px 60px}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:25px}h1{font-size:clamp(30px,5vw,40px);letter-spacing:-.04em;margin:2px 0}h2{font-size:21px;margin:0 0 14px}p{margin:10px 0}.eyebrow{font-size:13px;color:var(--muted);letter-spacing:.13em}.muted{color:var(--muted)}.small{font-size:14px}button,input,select{font:inherit;border:1px solid var(--line);border-radius:12px;padding:12px 16px;color:var(--text);min-height:48px}button{cursor:pointer;font-weight:650}button:disabled{opacity:.55;cursor:wait}.primary{background:#1462c9;border-color:#1462c9}.secondary,select,input{background:var(--raised)}input{width:100%;margin:8px 0 16px}label{display:block}form{margin-top:18px}button:hover{filter:brightness(1.15)}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:3px}.entry{max-width:600px;background:var(--surface);padding:30px;border:1px solid var(--line);border-radius:22px;margin:0 auto 30px}.entry>.primary{width:100%;margin-top:18px}.entry>h2{font-size:28px}.entry>p{color:var(--muted)}details{border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin-top:18px;background:var(--surface)}summary{cursor:pointer;font-weight:650;min-height:28px}details[open]>summary{margin-bottom:14px}.monitor-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.monitor-bar select{flex:1;min-width:160px}.cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:22px 0}.card{padding:26px;border-radius:22px;border:1px solid var(--line);background:var(--surface)}.solar{border-top:3px solid var(--gold)}.battery{border-top:3px solid var(--blue)}.solar h2,.solar .reading{color:var(--gold)}.battery h2,.battery .reading{color:var(--blue)}.reading{font-size:clamp(38px,6vw,58px);font-weight:750;letter-spacing:-.04em;line-height:1.2;margin:20px 0 15px}.reading.low{color:var(--gold)}.reading.empty{color:var(--red)}.history{padding:24px;border:1px solid var(--line);border-radius:22px;background:var(--surface)}.history-top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.history h2{margin:0}.filters{display:flex;gap:12px;flex-wrap:wrap}.filters label{font-size:14px}.filters select{font-size:14px;display:block;margin-top:4px}.legend{display:flex;gap:20px;font-size:14px;margin:20px 0 8px}#chart{width:100%;min-height:230px}#chart svg{display:block;width:100%;height:auto;overflow:visible}.options{display:flex;gap:12px;flex-wrap:wrap}.help{margin-top:28px}.privacy{margin-top:24px;max-width:700px}#message{padding:14px 18px;background:#3d2428;border:1px solid #75404b;border-radius:12px;color:#ffccd0;margin-bottom:22px}dialog{background:var(--surface);color:var(--text);border:1px solid var(--line);border-radius:20px;padding:28px;width:min(94vw,560px)}dialog::backdrop{background:#000a}output{display:block;padding:16px;background:var(--bg);overflow-wrap:anywhere;margin:20px 0;font-family:monospace}button[hidden],[hidden]{display:none!important}@media(max-width:560px){header{padding:16px}.brand small{font-size:12px}.brand strong{font-size:23px}.brand img{width:46px;height:46px}main{padding:22px 16px}.entry{padding:22px}.cards{gap:12px}.card{padding:18px 14px}.card h2{font-size:18px}.card p:not(.reading){font-size:14px}.reading{font-size:40px}.history{padding:18px 14px}.filters{width:100%}.filters label{flex:1}.filters select{width:100%}.monitor-bar label{width:100%}}@media(max-width:350px){.cards{grid-template-columns:1fr}}