:root[data-theme^="dark-"] {
  color-scheme: dark;
  --bg: #111720;
  --surface: #1b2430;
  --surface-soft: #253142;
  --line: #344253;
  --text: #edf2f8;
  --muted: #a0afc0;
  --accent: #95a8ff;
  --accent-deep: #c1cbff;
  --accent-soft: #293657;
  --accent-line: #43547d;
  --positive: #86d6ba;
  --positive-soft: #24403d;
  --nav-muted: #96a3b4;
  --nav-bg: rgba(27,36,48,.96);
  --day-active-bg: #9aabff;
  --day-active-text: #142039;
  --button-bg: #9aabff;
  --button-text: #142039;
  --toast-bg: #edf2f8;
  --toast-text: #172235;
}
:root[data-theme="dark-lime"] {
  --bg: #131a14;
  --surface: #202a21;
  --surface-soft: #2a382c;
  --line: #3b4a3e;
  --text: #eff4ec;
  --muted: #abbba7;
  --accent: #a8ca7c;
  --accent-deep: #c9e4a5;
  --accent-soft: #2c3b2b;
  --accent-line: #4a6043;
  --positive: #8dd0a9;
  --positive-soft: #294234;
  --nav-muted: #a1b09d;
  --nav-bg: rgba(32,42,33,.96);
  --day-active-bg: #b7d88e;
  --day-active-text: #1b2b1a;
  --button-bg: #b7d88e;
  --button-text: #1b2b1a;
}
:root[data-theme="dark-violet"] {
  --bg: #18131e;
  --surface: #292131;
  --surface-soft: #382d44;
  --line: #4b3c58;
  --text: #f5eff8;
  --muted: #bcaec5;
  --accent: #c3a0de;
  --accent-deep: #dfc3f0;
  --accent-soft: #3b2c4b;
  --accent-line: #614b75;
  --positive: #9bd5bd;
  --positive-soft: #2e443d;
  --nav-muted: #ac9bb8;
  --nav-bg: rgba(41,33,49,.96);
  --day-active-bg: #d0b1e6;
  --day-active-text: #2c1d3a;
  --button-bg: #d0b1e6;
  --button-text: #2c1d3a;
}
:root[data-theme^="dark-"] .context-separator { background: #758395; }
:root[data-theme^="dark-"] .option-button.off.selected { border-color: #9e6c78; background: #3c2b35; color: #e5afb9; }
:root[data-theme^="dark-"] .bottom-nav { box-shadow: 0 -6px 24px rgba(0,0,0,.18); }