/*
  Atmosphere is a decorative layer only. Theme and semantic states retain
  ownership of the site’s existing tokens and controls.
*/
body[data-atmosphere] {
  --atm-time-header-tint:transparent;
  --atm-season-page-tint:transparent;
  --atm-season-header-tint:transparent;
  --atm-weather-page-tint:transparent;
  --atm-weather-header-tint:transparent;
  --atm-heading-accent:var(--sage);
}

html[data-atm-time="dawn"] body[data-atmosphere="ambient"] {
  --atm-time-header-tint:rgba(201,198,166,0.12);
  --atm-heading-accent:var(--sage);
}
html[data-atm-time="evening"] body[data-atmosphere="ambient"] {
  --atm-time-header-tint:rgba(168,92,50,0.09);
  --atm-heading-accent:var(--clay);
}
html[data-atm-time="night"] body[data-atmosphere="ambient"] {
  --atm-time-header-tint:rgba(33,43,22,0.10);
  --atm-heading-accent:var(--moss);
}

html[data-atm-season="spring"] body[data-atmosphere] {
  --atm-season-page-tint:rgba(201,198,166,0.065);
  --atm-season-header-tint:rgba(201,198,166,0.075);
  --atm-heading-accent:var(--sage);
}
html[data-atm-season="summer"] body[data-atmosphere] {
  --atm-season-page-tint:rgba(68,89,57,0.035);
  --atm-season-header-tint:rgba(68,89,57,0.055);
  --atm-heading-accent:var(--moss);
}
html[data-atm-season="autumn"] body[data-atmosphere] {
  --atm-season-page-tint:rgba(168,92,50,0.045);
  --atm-season-header-tint:rgba(168,92,50,0.055);
  --atm-heading-accent:var(--clay);
}
html[data-atm-season="winter"] body[data-atmosphere] {
  --atm-season-page-tint:rgba(242,238,227,0.055);
  --atm-season-header-tint:rgba(201,198,166,0.045);
  --atm-heading-accent:var(--sage);
}

html[data-atm-weather="precipitation"] body[data-atmosphere="ambient"] {
  --atm-weather-page-tint:rgba(33,43,22,0.045);
  --atm-weather-header-tint:rgba(33,43,22,0.065);
}

body[data-atmosphere="ambient"],
body[data-atmosphere="assurance"] {
  background-color:var(--paper);
  background-image:
    linear-gradient(var(--atm-weather-page-tint), var(--atm-weather-page-tint)),
    linear-gradient(var(--atm-season-page-tint), var(--atm-season-page-tint));
}

body[data-atmosphere="ambient"] .art-head {
  background-color:var(--header-bg);
  background-image:
    linear-gradient(var(--atm-weather-header-tint), var(--atm-weather-header-tint)),
    linear-gradient(var(--atm-time-header-tint), var(--atm-time-header-tint)),
    linear-gradient(var(--atm-season-header-tint), var(--atm-season-header-tint));
}

body[data-atmosphere="ambient"] .article h1 .accent {
  text-decoration:underline;
  text-decoration-color:var(--atm-heading-accent);
  text-decoration-thickness:1px;
  text-underline-offset:0.18em;
}

body[data-atmosphere="assurance"] .legal-header {
  box-shadow:inset 2px 0 var(--atm-heading-accent);
}