:root {
  --bg: #fdfcfa;
  --fg: #1f2328;
  --muted: #59636e;
  --accent: #2f6f4f;
  --border: #d0d7de;
  --warn-bg: #fff4d6;
  --error-bg: #ffe9e7;
  --notice-bg: #e3f4ea;
  --danger: #b42318;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181b;
    --fg: #e6e6e6;
    --muted: #9aa4ae;
    --accent: #7cc59c;
    --border: #3a4046;
    --warn-bg: #3a3218;
    --error-bg: #42201d;
    --notice-bg: #1d3a2a;
    --danger: #f97066;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, sans-serif;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

header nav { display: flex; gap: 0.75rem; }
header nav span { color: var(--muted); }
a { color: var(--accent); }
.brand { font-weight: 700; text-decoration: none; }

main { max-width: 40rem; margin: 0 auto; padding: 1rem; }

label { display: block; margin: 0.75rem 0; }
input, button { font: inherit; }
input[type="text"] { display: block; width: 100%; box-sizing: border-box; padding: 0.4rem; }

button { padding: 0.45rem 0.9rem; border-radius: 6px; border: 1px solid var(--border); background: transparent; color: var(--fg); cursor: pointer; }
button:hover { border-color: var(--accent); }
/* Only each page's main action is filled; the rest stay quiet. */
button.primary { background: var(--accent); border-color: var(--accent); color: var(--bg); }
button.small { padding: 0.2rem 0.7rem; font-size: 0.9em; }
button.danger { color: var(--danger); border-color: var(--danger); }

.errors { background: var(--error-bg); padding: 0.5rem 1rem; border-radius: 6px; }
.warning { background: var(--warn-bg); padding: 0.5rem 1rem; border-radius: 6px; }
.notice { background: var(--notice-bg); padding: 0.5rem 1rem; border-radius: 6px; }
.eyebrow { color: var(--muted); margin-bottom: 0; }
.hint { color: var(--muted); }
code { word-break: break-all; }

details { margin: 0.5rem 0; }
summary { cursor: pointer; color: var(--muted); }
form.inline { display: inline; margin-left: 0.5rem; }
.passkeys li { margin: 0.4rem 0; }
.codes { font-size: 1.1em; }

select { font: inherit; padding: 0.3rem; }
label > select { display: block; }
input[type="date"] { display: block; padding: 0.3rem; }
fieldset { border: 1px solid var(--border); border-radius: 6px; margin: 1rem 0; }
label.check { display: flex; gap: 0.5rem; align-items: center; margin: 0.25rem 0; }

table { border-collapse: collapse; width: 100%; margin: 0.5rem 0 1rem; }
th, td { text-align: left; padding: 0.3rem 0.5rem; border-bottom: 1px solid var(--border); }
tr.week-start th, tr.week-start td { border-top: 2px solid var(--muted); }
.override { font-weight: 700; }
.answer-yes { color: var(--accent); }
.answer-no, .answer-unknown { color: var(--muted); }
.pager { display: flex; gap: 1rem; }

.badge { background: var(--accent); color: var(--bg); border-radius: 999px; padding: 0 0.6rem; margin-left: 0.4rem; font-size: 0.85em; }
.members li, .invites li, .groups li { margin: 0.4rem 0; }
input[type="number"] { width: 5rem; padding: 0.3rem; }

.matches, .periods { list-style: none; padding: 0; }
.match { border: 2px solid var(--accent); border-radius: 6px; padding: 0.5rem 1rem; margin: 0.5rem 0; }
.match.weak { border: 1px dashed var(--border); }
.match p { margin: 0.25rem 0; }
.match-head { font-weight: 600; }
.badge.weak { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.periods li { margin: 0.4rem 0; }

.tabs { display: flex; gap: 1rem; border-bottom: 1px solid var(--border); margin-bottom: 1rem; }
.tabs a, .tabs span { padding: 0.4rem 0; }
.tabs span[aria-current] { font-weight: 600; border-bottom: 2px solid var(--accent); }

.proposals { list-style: none; padding: 0; }
.proposal { border: 1px solid var(--border); border-radius: 6px; padding: 0.5rem 1rem; margin: 0.5rem 0; }
.proposal-confirmed { border: 2px solid var(--accent); }
.proposal p { margin: 0.25rem 0; }
.proposal form.inline:first-of-type { margin-left: 0; }
.taken { display: block; font-size: 0.85em; color: var(--muted); font-weight: 400; }