:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1b2430;
  --muted: #5d6b7c;
  --line: #d8dee6;
  --accent: #1f3a5f;
  --accent-text: #ffffff;
  --new: #1d7a46;
  --changed: #a26300;
  --deleted: #b3261e;
  --flag: #fff4d6;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161d;
    --card: #1a212b;
    --text: #e6ebf1;
    --muted: #97a3b2;
    --line: #2d3744;
    --accent: #7fa7d9;
    --accent-text: #0e1620;
    --new: #5cc98a;
    --changed: #e3a740;
    --deleted: #f07b72;
    --flag: #3a3220;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
header { padding: 12px 16px; background: var(--accent); color: var(--accent-text); }
h1 { font-size: 1.15rem; margin: 0; }
main { max-width: 640px; margin: 0 auto; padding: 12px 16px 32px; }
section, details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin: 12px 0; }
h2 { font-size: 1.05rem; margin: 0 0 6px; }
h3 { font-size: .95rem; margin: 14px 0 6px; }
h3.new { color: var(--new); }
h3.changed { color: var(--changed); }
h3.deleted { color: var(--deleted); }
h3.existing { color: var(--muted); }
.hint { color: var(--muted); font-size: .88rem; margin: 0 0 8px; }
input, select, button { font: inherit; color: inherit; }
input[type=text], input[type=password], input[type=date], input[type=time], select {
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; min-height: 38px; max-width: 100%;
}
input[type=file] { display: block; margin: 6px 0 10px; max-width: 100%; }
button {
  background: var(--accent); color: var(--accent-text); border: 0; border-radius: 8px; padding: 9px 14px; min-height: 40px; cursor: pointer;
}
button:disabled { opacity: .45; cursor: default; }
button.x { background: transparent; color: var(--muted); padding: 4px 8px; min-height: 0; }
#keyform { display: flex; gap: 8px; }
#keyform input { flex: 1; min-width: 0; }
.row { border-top: 1px solid var(--line); padding: 8px 0; }
.row:first-child { border-top: 0; }
.row.flagged { background: var(--flag); margin: 0 -14px; padding: 8px 14px; }
.row.past { color: var(--muted); font-size: .9rem; }
.line { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 3px 0; }
.line:first-child { justify-content: space-between; }
.line input[type=text] { flex: 1; min-width: 0; }
.flags { font-size: .85rem; color: var(--changed); }
#rows { margin: 0 -14px 10px; padding: 0 14px; max-height: 60vh; overflow-y: auto; overscroll-behavior: contain; }
#past { margin-bottom: 10px; }
#past details { background: none; border: 0; border-radius: 0; padding: 0; margin: 0; }
#past summary { color: var(--muted); font-weight: 600; font-size: .9rem; padding: 4px 0; }
button.linkish { background: none; color: var(--muted); padding: 0; min-height: 0; font-size: .88rem; }
.change { display: flex; gap: 10px; align-items: flex-start; padding: 6px 0; border-top: 1px solid var(--line); }
.change input { margin-top: 4px; width: 20px; height: 20px; flex: none; }
.change > span:nth-child(2) { flex: 1; }
.change.existing { color: var(--muted); padding-left: 30px; }
.was { display: block; margin: 0; }
.mark { flex: none; font-size: .85rem; max-width: 40%; }
#diff { margin-bottom: 10px; }
#status { min-height: 1.4em; margin: 8px 2px; }
details summary { cursor: pointer; font-weight: 600; }
details label { display: flex; flex-direction: column; gap: 4px; margin: 10px 0; }
.buttons { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }