/*
 * One page, one stylesheet, on the scales of the M-Bus Explorer: pick a step,
 * never write a fresh number. A fact read from a file is set in the mono face.
 *
 * This file is downloaded by whoever opens the page, comments included.
 */

:root {
  --ink: #17191c;
  --ink-quiet: #4a4f57;
  --ink-faint: #767c86;
  --page: #f7f8fa;
  --card: #ffffff;
  --edge: #dfe3e8;
  --accent: #1a5fb4;
  --accent-soft: #e8f0fb;
  --bad: #b3261e;
  --bad-soft: #fbe9e7;
  --read: #e6f4ee;

  --text-caption: 0.75rem;
  --text-small: 0.85rem;
  --text-body: 0.95rem;
  --text-lead: 1.1rem;
  --text-title: 1.5rem;

  --control: 34px;

  --gap-xs: 4px;
  --gap-s: 8px;
  --gap-m: 12px;
  --gap-l: 20px;
  --gap-xl: 32px;

  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

@media screen and (prefers-color-scheme: dark) {
  :root {
    --ink: #e6e8ec;
    --ink-quiet: #b0b6bf;
    --ink-faint: #858c96;
    --page: #14161a;
    --card: #1c1f24;
    --edge: #2e333a;
    --accent: #7fb0f0;
    --accent-soft: #1d2a3b;
    --bad: #f2a29b;
    --bad-soft: #3a2220;
    --read: #17302a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: var(--text-body) / 1.5 var(--font);
}

.masthead, main {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 var(--gap-l);
}

.masthead { padding-top: var(--gap-xl); }

h1 { font-size: var(--text-title); margin: 0 0 var(--gap-s); }
h2 { font-size: var(--text-lead); margin: var(--gap-xl) 0 var(--gap-m); }
h3 { font-size: var(--text-body); margin: var(--gap-l) 0 var(--gap-s); }

.lede { color: var(--ink-quiet); margin: 0 0 var(--gap-l); max-width: 70ch; }

.panel {
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 8px;
  padding: var(--gap-l);
}

.drop {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  border: 2px dashed var(--edge);
  border-radius: 8px;
  cursor: pointer;
  color: var(--ink-quiet);
  text-align: center;
  padding: var(--gap-l);
}
.drop.over, .drop:focus-within { border-color: var(--accent); background: var(--accent-soft); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }

.row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-m);
  align-items: flex-end;
  margin-top: var(--gap-m);
}

.field { display: flex; flex-direction: column; gap: var(--gap-xs); }
.field.grow { flex: 1 1 320px; }
.field.narrow { flex: 0 1 260px; }
.label { font-size: var(--text-small); font-weight: 600; }
.hint { font-weight: 400; color: var(--ink-faint); }

input[type="search"], input[type="file"] {
  font: inherit;
  color: inherit;
  min-height: var(--control);
}
input[type="search"] {
  background: var(--page);
  border: 1px solid var(--edge);
  border-radius: 6px;
  padding: 0 var(--gap-s);
}

button {
  font: inherit;
  font-weight: 600;
  height: var(--control);
  padding: 0 var(--gap-l);
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: var(--card);
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: progress; }

.privacy, .hint-text, .quiet { color: var(--ink-faint); font-size: var(--text-small); }
.privacy { margin: var(--gap-m) 0 0; }

.refusal, .warning {
  background: var(--bad-soft);
  color: var(--bad);
  border-radius: 6px;
  padding: var(--gap-s) var(--gap-m);
}
.refusal { margin-top: var(--gap-l); }

.scroll { overflow-x: auto; }

table.list { border-collapse: collapse; width: 100%; font-size: var(--text-small); }
table.list th, table.list td {
  text-align: left;
  vertical-align: top;
  padding: var(--gap-xs) var(--gap-s);
  border-bottom: 1px solid var(--edge);
}
table.list th { font-weight: 600; white-space: nowrap; }
table.list .number { text-align: right; font-variant-numeric: tabular-nums; }
table.list tr.bad td { color: var(--bad); }
table.list tr.read td { background: var(--read); }
table.list tr.quiet td { color: var(--ink-faint); }
table.columns .heading, table.columns .cell { font-family: var(--font-mono); }
table.columns .heading { white-space: nowrap; }
.explained { text-decoration: underline dotted var(--ink-faint); text-underline-offset: 3px; cursor: help; }
/* A number stays whole; a long text, like a RAW report's model name, wraps
   past 28 characters instead of squeezing the explanation beside it. */
table.columns .cell { min-width: 12ch; max-width: 28ch; overflow-wrap: anywhere; }
table.columns .use { min-width: 28ch; }

dl.pairs {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: var(--gap-xs) var(--gap-m);
  margin: var(--gap-s) 0;
}
dl.pairs dt { color: var(--ink-faint); }
dl.pairs dd { margin: 0; font-family: var(--font-mono); word-break: break-word; }


details.meter {
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 8px;
  margin-bottom: var(--gap-s);
}
details.meter > summary {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-s) var(--gap-m);
  align-items: baseline;
  padding: var(--gap-s) var(--gap-m);
  cursor: pointer;
}
.serial { font-family: var(--font-mono); }
.names { color: var(--ink-quiet); }
.model { margin-left: auto; color: var(--ink-quiet); }
.tag {
  font-size: var(--text-caption);
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 99px;
  padding: 0 var(--gap-s);
}
.tag.bad { background: var(--bad-soft); color: var(--bad); }

.inside { padding: 0 var(--gap-m) var(--gap-m); border-top: 1px solid var(--edge); }

.candidates { display: flex; flex-direction: column; gap: var(--gap-xs); }
.candidate { display: flex; gap: var(--gap-s); align-items: baseline; cursor: pointer; }

.charts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 560px), 1fr));
  gap: var(--gap-m);
}
figure.chart {
  margin: 0;
  border: 1px solid var(--edge);
  border-radius: 6px;
  padding: var(--gap-s) var(--gap-m);
  min-width: 0;
}
figure.chart figcaption { font-size: var(--text-small); margin-bottom: var(--gap-xs); }

/* The charts, as the M-Bus Explorer draws them. */
.chart-ranges { display: flex; flex-wrap: wrap; align-items: center; gap: var(--gap-xs); margin: 0 0 var(--gap-m); }
.chart-ranges-note { margin-left: var(--gap-s); font-size: var(--text-caption); color: var(--ink-faint); }
button.quiet {
  height: auto;
  padding: var(--gap-xs) var(--gap-m);
  font-size: var(--text-caption);
  font-weight: 600;
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--edge);
}
button.quiet:hover { border-color: var(--accent); }
button.quiet[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--card); }
.chart-box { width: 100%; margin-bottom: var(--gap-s); }
.chart-box svg { display: block; }
.chart-label { font-family: var(--font-mono); font-size: var(--text-caption); fill: var(--ink-faint); }
.chart-grid { stroke: var(--edge); }
.chart-axis { stroke: var(--ink-faint); }
.chart-line { fill: none; stroke: var(--accent); stroke-width: 1.5; }
.chart-point { fill: var(--accent); }
.chart-guide { stroke: var(--ink-faint); stroke-dasharray: 3 3; pointer-events: none; }
.chart-marker { fill: var(--card); stroke: var(--accent); stroke-width: 2; pointer-events: none; }
.chart-area { fill: transparent; cursor: pointer; }
.chart-chosen { stroke: var(--bad); stroke-width: 1.5; pointer-events: none; }
/* A column of a meaning, and each column stays whole: the latest and the count,
   the two extremes, and a counter's increment and its rate. */
.chart-summary {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-xs) var(--gap-m);
  font-size: var(--text-small);
}
.chart-summary dl {
  flex: 1 1 12rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--gap-xs) var(--gap-m);
  margin: 0;
}
.chart-summary dt { color: var(--ink-faint); }
.chart-summary dd { margin: 0; }
.mono { font-family: var(--font-mono); }

.tip {
  position: fixed;
  z-index: 10;
  max-width: min(46ch, calc(100vw - 16px));
  padding: var(--gap-xs) var(--gap-s);
  border-radius: 6px;
  background: var(--ink);
  color: var(--page);
  font-size: var(--text-caption);
  line-height: 1.45;
  pointer-events: none;
  box-shadow: 0 2px 10px rgb(0 0 0 / 0.25);
}
.tip[hidden] { display: none; }

ul.refused { font-size: var(--text-small); padding-left: var(--gap-l); }

@media (max-width: 600px) {
  .masthead, main { padding: 0 var(--gap-m); }
  .model { margin-left: 0; }
}

/* The files table keeps its column widths when a datalogger's details are
   opened: a fixed layout, with the widths set here rather than by what the
   cells hold. Long text wraps inside its own column. */
#file-table { table-layout: fixed; min-width: 760px; }
#file-table th:nth-child(1) { width: 32%; }
#file-table th:nth-child(2) { width: 9%; }
#file-table th:nth-child(3) { width: 29%; }
#file-table th:nth-child(n+4) { width: 6%; }
#file-table td { overflow-wrap: anywhere; }
#file-table th { white-space: normal; vertical-align: bottom; }

/* A section the reader opens and closes, its title still a heading. */
details.section > summary { cursor: pointer; margin: var(--gap-xl) 0 var(--gap-m); }
details.section > summary h2 { display: inline; margin: 0; }
details.section > summary::marker { color: var(--ink-faint); }

/* The record chosen, and the timeline that chooses it. */
.timeline { display: flex; align-items: center; gap: var(--gap-s); margin: 0 0 var(--gap-s); }
.timeline input[type="range"] { flex: 1 1 auto; min-width: 120px; accent-color: var(--accent); }
.timeline button:disabled { opacity: 0.4; cursor: default; }
.record-where { font-size: var(--text-small); color: var(--ink-quiet); margin: 0 0 var(--gap-s); }
.search { margin: 0 0 var(--gap-m); }