:root {
  --bg: #11161c;
  --panel: #171e26;
  --line: #2a3542;
  --text: #e7edf3;
  --muted: #92a2b3;
  --accent: #ffb200;
  --seam: #ff7a59;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg); color: var(--text); display: flex;
}
#map { flex: 1; min-width: 0; background: #0b0f14; }

#panel {
  width: 340px; flex: none; background: var(--panel);
  border-left: 1px solid var(--line); padding: 18px 18px 14px;
  overflow-y: auto; display: flex; flex-direction: column; gap: 14px;
}
header h1 { margin: 0; font-size: 19px; letter-spacing: .3px; }
header .sub { margin: 2px 0 0; color: var(--muted); font-size: 12.5px; }

.field { display: flex; flex-direction: column; gap: 5px; }
.field > span { font-size: 11px; text-transform: uppercase; letter-spacing: .7px; color: var(--muted); }
select {
  background: #0e141a; color: var(--text); border: 1px solid var(--line);
  border-radius: 7px; padding: 8px 9px; font: inherit; width: 100%;
}
.note { margin: 0; font-size: 12px; color: var(--muted); }
.note:empty { display: none; }

.modes { display: flex; gap: 6px; }
.modes-wrap { flex-wrap: wrap; }
.modes-wrap button { flex: 1 1 44%; }
.modes button {
  flex: 1; background: #0e141a; color: var(--muted); border: 1px solid var(--line);
  border-radius: 7px; padding: 7px 6px; font: inherit; font-size: 12.5px; cursor: pointer;
}
.modes button.on { background: var(--accent); color: #12181f; border-color: var(--accent); font-weight: 600; }

.year-row { display: flex; align-items: baseline; gap: 10px; }
#year-out { font-size: 30px; font-variant-numeric: tabular-nums; font-weight: 600; }
#play {
  margin-left: auto; width: 34px; height: 30px; border-radius: 7px; cursor: pointer;
  background: #0e141a; color: var(--text); border: 1px solid var(--line); font-size: 12px;
}
#play.on { background: var(--accent); color: #12181f; }
input[type=range] { width: 100%; accent-color: var(--accent); }
.ticks { display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); }

.warn { margin: 7px 0 0; font-size: 12px; color: #ffcf6b; line-height: 1.45; }
.warn:empty { display: none; }
.seam { margin: 6px 0 0; font-size: 12px; color: var(--seam); }
.seam:empty { display: none; }

#legend { display: flex; flex-direction: column; gap: 6px; }
.key { display: flex; align-items: center; gap: 8px; font-size: 12.5px; }
.sw { width: 15px; height: 15px; border-radius: 3px; flex: none; border: 1px solid rgba(255,255,255,.18); }
.ramp { height: 11px; border-radius: 3px; flex: 1; }

#readout { border-top: 1px solid var(--line); padding-top: 11px; font-size: 12.5px; }
#readout .big { font-size: 21px; font-weight: 600; font-variant-numeric: tabular-nums; }
#readout .cap { color: var(--muted); font-size: 11.5px; }

footer { margin-top: auto; border-top: 1px solid var(--line); padding-top: 10px; }
#status { margin: 0 0 6px; font-size: 12px; color: var(--muted); }
#status.error { color: #ff8f7a; }
.attrib { margin: 0 0 6px; font-size: 10.5px; color: #66768a; line-height: 1.45; }
.attrib a { color: var(--accent); text-decoration: none; font-size: 11.5px; }
.attrib a:hover { text-decoration: underline; }

@media (max-width: 760px) {
  body { flex-direction: column; }
  #panel { width: 100%; border-left: none; border-top: 1px solid var(--line); max-height: 52vh; }
}