:root{
  --bg:#f4f5f2; --card:#ffffff; --ink:#1d2421; --muted:#68716c; --line:#dfe3df;
  --brand:#24543f; --brand-ink:#ffffff;
  --lpg:#c2410c; --lpg-soft:#fff1e8;
  --water:#1d5fa8; --water-soft:#e9f2fc;
  --done:#2f8a4e; --done-soft:#e3f4e8;
  --skip:#b7791f; --skip-soft:#fdf3dc;
  --pend:#ffffff;
  --err:#b42318; --err-soft:#fdecea;
  --radius:12px;
  --accent:var(--lpg); --accent-soft:var(--lpg-soft);
}
body.cat-Water{--accent:var(--water); --accent-soft:var(--water-soft);}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans",sans-serif;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.45;-webkit-text-size-adjust:100%}
a{color:var(--brand)}
h1{font-size:1.35rem;margin:0 0 .75rem}
h2{font-size:1.1rem;margin:1.25rem 0 .5rem}
.muted{color:var(--muted)}
.small{font-size:.85rem}

/* top bar */
.top{background:var(--brand);color:var(--brand-ink);position:sticky;top:0;z-index:20}
.top-in{max-width:1100px;margin:0 auto;padding:.6rem 16px;display:flex;align-items:center;gap:.75rem}
.logo{font-weight:700;letter-spacing:.2px;white-space:nowrap;color:#fff;text-decoration:none}
.logo span{opacity:.75;font-weight:500}
.who{margin-left:auto;font-size:.85rem;opacity:.9;text-align:right}
.who .nm{white-space:nowrap}
body{overflow-x:hidden}
.who a{color:#fff}
nav.tabs{background:#1b4232;overflow-x:auto;-webkit-overflow-scrolling:touch}
nav.tabs .in{max-width:1100px;margin:0 auto;display:flex;gap:2px;padding:0 10px}
nav.tabs a{color:#d6e6dd;text-decoration:none;padding:.6rem .8rem;font-size:.92rem;white-space:nowrap;border-bottom:3px solid transparent}
nav.tabs a.on{color:#fff;border-bottom-color:#9fd3b4;font-weight:600}

main{max-width:1100px;margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:14px}

/* flashes */
.flash{padding:.7rem .9rem;border-radius:10px;margin-bottom:12px;font-size:.95rem}
.flash.ok{background:var(--done-soft);color:#1e5e33}
.flash.error{background:var(--err-soft);color:var(--err)}
.flash.warn{background:var(--skip-soft);color:#7a4f0e}

/* forms */
label{display:block;font-weight:600;font-size:.9rem;margin:.75rem 0 .3rem}
input[type=text],input[type=password],input[type=number],input[type=date],select,textarea{
  width:100%;font:inherit;padding:.7rem .75rem;border:1px solid #c9cfca;border-radius:10px;background:#fff;color:var(--ink)}
textarea{min-height:70px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:0;border-color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;font:inherit;font-weight:600;border:0;border-radius:10px;padding:.7rem 1.1rem;background:var(--brand);color:#fff;cursor:pointer;text-decoration:none}
.btn.big{width:100%;padding:1rem;font-size:1.05rem}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid #c9cfca}
.btn.danger{background:var(--err)}
.btn.small{padding:.4rem .7rem;font-size:.85rem}
.btn:disabled{opacity:.55;cursor:default}
.row{display:flex;gap:10px;flex-wrap:wrap}
.row > *{flex:1 1 160px}

/* segmented category switch */
.seg{display:grid;grid-template-columns:1fr 1fr;background:#e7eae6;border-radius:12px;padding:4px;gap:4px}
.seg button{font:inherit;font-weight:700;border:0;border-radius:9px;padding:.7rem;background:transparent;color:var(--muted);cursor:pointer}
.seg button.on[data-cat=LPG]{background:var(--lpg);color:#fff}
.seg button.on[data-cat=Water]{background:var(--water);color:#fff}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font:inherit;border:1.5px solid #c9cfca;background:#fff;color:var(--ink);border-radius:999px;padding:.5rem .95rem;cursor:pointer;font-weight:600}
.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.stepl{font-size:.75rem;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);font-weight:700;margin:14px 0 6px;display:flex;justify-content:space-between}

/* floor + unit grid */
.floors{display:grid;grid-template-columns:repeat(auto-fill,minmax(46px,1fr));gap:6px}
.fl{font:inherit;font-weight:700;border:1.5px solid #c9cfca;background:#fff;border-radius:10px;padding:.55rem 0;cursor:pointer;position:relative}
.fl.all{background:var(--done-soft);border-color:#a8d8b7;color:#1e5e33}
.fl.some{background:linear-gradient(90deg,var(--done-soft) 50%,#fff 50%)}
.fl.on{outline:3px solid var(--accent);outline-offset:1px}
.units{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:8px}
.un{font:inherit;border:1.5px solid #c9cfca;background:var(--pend);border-radius:12px;padding:.6rem .2rem;cursor:pointer;text-align:center}
.un b{display:block;font-size:1.25rem}
.un small{display:block;font-size:.7rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.un.done{background:var(--done-soft);border-color:#a8d8b7}
.un.skipped{background:var(--skip-soft);border-color:#ecd08f}
.un.on{outline:3px solid var(--accent);outline-offset:1px}
.legend{display:flex;gap:12px;font-size:.78rem;color:var(--muted);flex-wrap:wrap;margin-top:8px}
.legend i{display:inline-block;width:11px;height:11px;border-radius:3px;border:1px solid #c9cfca;vertical-align:-1px;margin-right:4px}

/* entry form */
.entry{border-top:4px solid var(--accent)}
.hh{display:flex;align-items:baseline;justify-content:space-between;gap:8px;flex-wrap:wrap}
.hh h2{margin:0;font-size:1.4rem}
.tag{display:inline-block;background:var(--accent-soft);color:var(--accent);font-weight:700;border-radius:6px;padding:.15rem .5rem;font-size:.85rem}
.prev{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.stat{background:#f6f7f5;border-radius:10px;padding:.6rem .75rem}
.stat .k{font-size:.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.stat .v{font-size:1.15rem;font-weight:700}
.notice{background:var(--skip-soft);color:#7a4f0e;border-radius:10px;padding:.6rem .75rem;margin-top:10px;font-size:.9rem}
.photo-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;border:2px dashed var(--accent);background:var(--accent-soft);color:var(--accent);border-radius:12px;padding:1.1rem;font-weight:700;cursor:pointer;text-align:center}
.photo-btn input{display:none}
.preview{margin-top:8px;display:none;position:relative}
.preview img{width:100%;max-height:260px;object-fit:contain;border-radius:10px;background:#111}
.reading-in{font-size:1.6rem !important;font-weight:700;text-align:center;letter-spacing:1px}
.cons{text-align:center;margin-top:6px;font-weight:600;min-height:1.4em}
.cons.bad{color:var(--err)}
.reason .chip.on{background:var(--skip);border-color:var(--skip)}
details.skipbox{margin-top:12px;border:1px solid var(--line);border-radius:10px;padding:.6rem .75rem}
details.skipbox summary{cursor:pointer;font-weight:600;color:var(--muted)}
.empty{color:var(--muted);text-align:center;padding:1.5rem .5rem}

/* toast */
.toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%) translateY(120px);background:var(--ink);color:#fff;padding:.8rem 1.1rem;border-radius:12px;max-width:calc(100% - 32px);transition:transform .25s;z-index:50;box-shadow:0 6px 24px rgba(0,0,0,.2)}
.toast.show{transform:translateX(-50%) translateY(0)}
.toast.err{background:var(--err)}

/* tables */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:.92rem;background:#fff}
th,td{padding:.55rem .6rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;white-space:nowrap}
th{background:#f0f2ef;font-size:.8rem;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
td.num,th.num{text-align:right}
.pill{display:inline-block;border-radius:999px;padding:.1rem .55rem;font-size:.78rem;font-weight:700}
.pill.LPG{background:var(--lpg-soft);color:var(--lpg)}
.pill.Water{background:var(--water-soft);color:var(--water)}
.pill.s{background:var(--skip-soft);color:#7a4f0e}
.thumb{width:44px;height:44px;object-fit:cover;border-radius:6px;display:block}

/* dashboard */
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:12px;padding:.8rem}
.kpi .k{font-size:.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.kpi .v{font-size:1.6rem;font-weight:800}
.bar{height:10px;border-radius:6px;background:#eceeea;overflow:hidden;display:flex}
.bar span{display:block;height:100%}
.bar .d{background:var(--done)}
.bar .s{background:#e3b453}
.blk{display:grid;grid-template-columns:90px 1fr 120px;gap:10px;align-items:center;padding:.55rem 0;border-bottom:1px solid var(--line)}
.blk:last-child{border-bottom:0}
.hl{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.hl a{font-size:.82rem;text-decoration:none;border:1px solid #c9cfca;border-radius:6px;padding:.15rem .45rem;color:var(--ink);background:#fff}
.hl a.s{background:var(--skip-soft);border-color:#ecd08f}

/* houses grid */
.hgrid td,.hgrid th{text-align:center;padding:.35rem}
.hgrid input{width:20px;height:20px}

.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}
.login{width:100%;max-width:380px}
.login .brand{background:var(--brand);color:#fff;border-radius:var(--radius) var(--radius) 0 0;padding:1.2rem 16px}
.login .brand h1{margin:0}
.login .card{border-radius:0 0 var(--radius) var(--radius)}

@media (max-width:640px){
  .kpis{grid-template-columns:repeat(2,1fr)}
  .blk{grid-template-columns:70px 1fr 90px}
  .hide-sm{display:none}
  main{padding:12px 16px}
  .who .nm{display:none}
  .who{white-space:nowrap}
  .units{grid-template-columns:repeat(3,1fr)}
  .logo span{display:none}
}

/* reading from photo */
.aibox{margin-top:8px;border-radius:10px;padding:.6rem .75rem;font-size:.92rem;background:#eef4f0;color:#1e5e33}
.aibox.busy{background:#f0f2ef;color:var(--muted)}
.aibox.warn{background:var(--skip-soft);color:#7a4f0e}
.aibox.err{background:var(--err-soft);color:var(--err)}
.reading-in.ai{background:#f3faf5;border-color:#a8d8b7}