:root{
  --bg: #12161B;
  --panel: #1B2129;
  --panel-2: #212832;
  --inset: #0D1014;
  --line: #313A46;
  --ink: #E9E7E0;
  --ink-dim: #9BA3AE;
  --ink-faint: #626C78;
  --electric: #62E8D2;
  --gas: #F5A94E;
  --danger: #E5626A;
  --ok: #8FD68A;
  --radius: 10px;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
}
*{ box-sizing: border-box; }
html,body{ margin:0; padding:0; }
body{
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  padding-bottom: 48px;
}
.wrap{ max-width: 720px; margin: 0 auto; padding: 20px 16px 0; }

header.top{ padding: 6px 0 18px; }
header.top h1{ font-size: 22px; margin: 0 0 4px; font-weight: 700; letter-spacing: -0.01em; }
header.top p{ margin:0; color: var(--ink-dim); font-size: 13.5px; line-height:1.5; max-width: 46ch; }

.meters{ display:grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 18px; }
@media (max-width: 480px){ .meters{ grid-template-columns: 1fr; } }

.meter-tile{
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 16px 14px;
  position: relative;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}
.meter-tile .label{ display:flex; align-items:center; gap:8px; font-size: 13px; color: var(--ink-dim); margin-bottom: 10px; }
.dot{ width:8px; height:8px; border-radius:50%; flex:none; }
.dot.electric{ background: var(--electric); box-shadow: 0 0 6px var(--electric); }
.dot.gas{ background: var(--gas); box-shadow: 0 0 6px var(--gas); }

.readout{ background: var(--inset); border-radius: 6px; padding: 12px 10px; box-shadow: inset 0 2px 6px rgba(0,0,0,0.5); margin-bottom: 10px; }
.readout .value{ font-family: var(--mono); font-weight: 600; font-size: 28px; letter-spacing: 0.02em; font-variant-numeric: tabular-nums; line-height: 1.1; }
.meter-tile.electric .readout .value{ color: var(--electric); text-shadow: 0 0 10px rgba(98,232,210,0.35); }
.meter-tile.gas .readout .value{ color: var(--gas); text-shadow: 0 0 10px rgba(245,169,78,0.35); }
.readout .unit{ font-size: 12px; color: var(--ink-faint); margin-top: 2px; }
.readout .empty{ font-family: var(--mono); color: var(--ink-faint); font-size: 16px; }

.meta-row{ display:flex; justify-content: space-between; font-size: 12px; color: var(--ink-dim); margin-bottom: 12px; }
.meta-row .delta strong{ color: var(--ink); font-weight:600; }

button{ font-family: var(--sans); cursor:pointer; }
.btn{
  display:flex; align-items:center; justify-content:center; gap:6px;
  width:100%; padding: 10px 12px; border-radius: 7px; border:1px solid var(--line);
  background: var(--panel-2); color: var(--ink); font-size: 13.5px; font-weight:600;
}
.btn:active{ transform: translateY(1px); }
.btn:disabled{ opacity: 0.55; }
.meter-tile.electric .btn.primary{ background: var(--electric); border-color: var(--electric); color:#08211D; }
.meter-tile.gas .btn.primary{ background: var(--gas); border-color: var(--gas); color:#2B1B04; }

section.block{ background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 14px; overflow: hidden; }
.block-head{ display:flex; align-items:baseline; justify-content:space-between; padding: 14px 16px 10px; }
.block-head h2{ font-size: 14.5px; margin:0; font-weight:600; }
.block-head .hint{ font-size: 12px; color: var(--ink-faint); }

.log-row{ display:grid; grid-template-columns: 20px 1fr auto; gap:10px; align-items:center; padding: 10px 16px; border-top: 1px solid var(--line); font-size: 13.5px; }
.log-row .dot{ margin: 0 auto; }
.log-row .who{ color: var(--ink-dim); font-size: 12px; }
.log-row .val{ font-family: var(--mono); font-weight:600; font-variant-numeric: tabular-nums; }
.log-row .delta{ text-align:right; color: var(--ink-dim); font-size: 12.5px; font-family: var(--mono); }
.log-row .flag{ color: var(--danger); font-size: 11px; }

.empty-state{ padding: 22px 16px 26px; color: var(--ink-faint); font-size: 13px; line-height:1.6; }

.bill-row{ padding: 12px 16px; border-top: 1px solid var(--line); font-size: 13px; }
.bill-row .top{ display:flex; justify-content:space-between; margin-bottom:4px; }
.bill-row .top .name{ font-weight:600; }
.bill-row .compare{ display:flex; gap:14px; color: var(--ink-dim); font-family: var(--mono); font-size: 12.5px; flex-wrap: wrap; }
.bill-row .compare .tag{ font-family: var(--sans); color: var(--ink-faint); }
.bill-row .flagline{ margin-top:6px; font-size:12px; color: var(--danger); }
.bill-row .okline{ margin-top:6px; font-size:12px; color: var(--ok); }

.add-bill-btn{ margin: 4px 16px 14px; width: calc(100% - 32px); }

.veil{
  position: fixed; inset:0; background: rgba(6,8,10,0.72);
  display:flex; align-items:flex-end; justify-content:center;
  z-index: 50; opacity:0; pointer-events:none; transition: opacity 0.18s ease;
}
.veil.open{ opacity:1; pointer-events:auto; }
@media (min-width: 620px){ .veil{ align-items:center; } }
.sheet{
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px 14px 0 0;
  width: 100%; max-width: 520px; max-height: 88vh; overflow-y:auto;
  padding: 18px 18px 22px; transform: translateY(16px); transition: transform 0.18s ease;
  position: relative;
}
@media (min-width: 620px){ .sheet{ border-radius: 14px; transform: translateY(0) scale(0.98); } }
.veil.open .sheet{ transform: translateY(0) scale(1); }
.sheet h3{ margin: 0 0 4px; font-size: 16.5px; }
.sheet .sub{ margin:0 0 16px; color: var(--ink-dim); font-size: 12.5px; }
.sheet label{ display:block; font-size: 12px; color: var(--ink-dim); margin: 12px 0 6px; }
.sheet input, .sheet select, .sheet textarea{
  width:100%; background: var(--inset); border: 1px solid var(--line); border-radius:7px;
  color: var(--ink); padding: 10px 10px; font-size: 14px; font-family: var(--sans);
}
.sheet input[type=number]{ font-family: var(--mono); }
.row2{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sheet .actions{ display:flex; gap:10px; margin-top:18px; }
.sheet .actions .btn{ flex:1; }
.close-x{ position:absolute; top:14px; right:14px; background:none; border:none; color: var(--ink-faint); font-size:20px; line-height:1; padding:4px; }

.capture-preview{ width:100%; border-radius:8px; overflow:hidden; background: var(--inset); margin-bottom: 12px; display:flex; align-items:center; justify-content:center; min-height: 140px; }
.capture-preview img{ width:100%; display:block; }
.capture-preview .placeholder{ color: var(--ink-faint); font-size: 13px; padding: 30px 10px; text-align:center; }

.file-btn{ position: relative; overflow: hidden; }
.file-btn input[type=file]{ position:absolute; inset:0; opacity:0; cursor:pointer; font-size: 200px; }

.status-line{ display:flex; align-items:center; gap:8px; font-size: 12.5px; color: var(--ink-dim); margin: 10px 0 2px; min-height: 18px; }
.spin{ width:12px; height:12px; border-radius:50%; border: 2px solid var(--line); border-top-color: var(--ink-dim); animation: spin 0.7s linear infinite; flex:none; }
@keyframes spin{ to{ transform: rotate(360deg); } }

.confidence{ display:inline-block; font-size: 10.5px; padding: 2px 7px; border-radius: 4px; font-weight:600; letter-spacing: 0.02em; }
.confidence.high{ background: rgba(143,214,138,0.14); color: var(--ok); }
.confidence.medium{ background: rgba(245,169,78,0.14); color: var(--gas); }
.confidence.low{ background: rgba(229,98,106,0.14); color: var(--danger); }

.ai-note{ background: var(--inset); border-radius:7px; padding:10px 11px; font-size:12.5px; color: var(--ink-dim); line-height:1.5; margin-top:10px; }

.toast{
  position: fixed; bottom: 18px; left:50%; transform: translateX(-50%);
  background: var(--panel-2); border:1px solid var(--line); color: var(--ink);
  padding: 10px 16px; border-radius: 8px; font-size: 13px; z-index: 60;
  opacity:0; pointer-events:none; transition: opacity 0.2s ease, transform 0.2s ease;
}
.toast.show{ opacity:1; transform: translateX(-50%) translateY(-4px); }

.backup-row{ display:flex; gap:10px; padding: 4px 16px 16px; }
.backup-row .btn{ font-size: 12.5px; padding: 8px 10px; }
.backup-row input[type=file]{ display:none; }

.footnote{ text-align:center; color: var(--ink-faint); font-size: 11.5px; padding: 10px 20px 0; line-height:1.6; }
.install-banner{
  display:none; align-items:center; justify-content: space-between; gap: 10px;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px 14px; margin-bottom: 14px; font-size: 13px;
}
.install-banner.show{ display:flex; }
.install-banner button{ background: var(--electric); color:#08211D; border:none; border-radius:6px; padding:7px 12px; font-weight:600; font-size:12.5px; flex:none; }
.install-banner .dismiss{ background:none; color: var(--ink-faint); border:none; font-size: 18px; padding: 2px 4px; }