:root {
  color-scheme: light dark;
  --bg: var(--tg-theme-bg-color, #ffffff);
  --fg: var(--tg-theme-text-color, #111111);
  --muted: var(--tg-theme-hint-color, #707579);
  --accent: var(--tg-theme-button-color, #3390ec);
  --accent-fg: var(--tg-theme-button-text-color, #ffffff);
  --field-bg: var(--tg-theme-secondary-bg-color, #f4f4f5);
  --border: rgba(0,0,0,0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  padding: 16px;
  max-width: 520px;
  margin-inline: auto;
}
header { text-align: center; margin: 8px 0 24px; }
h1 { font-size: 28px; margin: 0; font-weight: 600; }
.subtitle { color: var(--muted); margin: 4px 0 0; }
form { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 4px; font-size: 14px; color: var(--muted); }
.field > span { font-size: 13px; }
input, select {
  background: var(--field-bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 16px;
  outline: none;
  width: 100%;
}
input:focus, select:focus { border-color: var(--accent); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
  max-height: 320px;
  overflow-y: auto;
  padding: 4px 0;
}
.region-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 8px 0 2px;
  padding: 0 2px;
}
.region-header[hidden] { display: none; }
.region-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}
.region-toggle {
  background: transparent;
  border: none;
  color: var(--accent);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 6px;
}
.chip {
  background: var(--field-bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
}
.chip.selected {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}
.chip[hidden] { display: none; }
.muted-line {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}
fieldset {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  margin: 0;
}
legend { font-size: 13px; color: var(--muted); padding: 0 6px; }
.tw { margin-bottom: 8px; }
#add-window {
  background: transparent;
  color: var(--accent);
  border: none;
  font-size: 14px;
  padding: 4px 0;
  cursor: pointer;
}
button[type="submit"] {
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  border-radius: 12px;
  padding: 14px;
  font-size: 17px;
  font-weight: 600;
  margin-top: 8px;
  cursor: pointer;
}
button[type="submit"]:disabled { opacity: 0.6; }
.hint { color: var(--muted); font-size: 13px; margin: 4px 2px; }
#status {
  margin-top: 20px;
  padding: 14px;
  background: var(--field-bg);
  border-radius: 12px;
  text-align: center;
}
.error { color: #e53e3e; font-size: 14px; }