:root {
  color-scheme: light dark;
  --fg: #1b1b1f;
  --bg: #ffffff;
  --muted: #5b5b66;
  --border: #d8d8e0;
  --accent: #7b3fe4;
  --accent-fg: #ffffff;
  --warn-bg: #fff3cd;
  --warn-fg: #7a5b00;
  --warn-border: #e0c66b;
  --row-alt: #f7f7fb;
  --error: #c0392b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #eaeaf0;
    --bg: #16161a;
    --muted: #a3a3ad;
    --border: #33333d;
    --accent: #b58cff;
    --accent-fg: #1b1b1f;
    --warn-bg: #3a2f00;
    --warn-fg: #ffdf80;
    --warn-border: #7a5b00;
    --row-alt: #1d1d22;
    --error: #ff6b5e;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Malgun Gothic", "Apple SD Gothic Neo", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

header {
  padding: 1.25rem 1rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
header h1 { margin: 0 0 0.25rem; font-size: 1.4rem; }
header .sub { margin: 0; color: var(--muted); font-size: 0.9rem; }

main {
  padding: 1rem;
  max-width: 960px;
  margin: 0 auto;
}

#status { padding: 0.75rem 0; }
#status.error { color: var(--error); font-weight: bold; }

#ask-box, #query-box {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: end;
  margin-bottom: 1rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
}
#ask-box > p.hint, #query-box > p.hint {
  flex-basis: 100%;
  margin: 0 0 0.25rem;
  font-size: 0.8rem;
  color: var(--muted);
}
#ask-box label, #query-box label { display: block; font-size: 0.8rem; color: var(--muted); margin-bottom: 0.25rem; }
#ask-box input, #query-box input {
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.95rem;
}
#ask-box button, #query-box button {
  padding: 0.5rem 1rem;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-fg);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
}
#query-box button#quick-clear {
  background: transparent;
  color: var(--accent);
}
#ask-box { border-color: var(--accent); }
#ask-box #ask-form { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; flex: 1 1 auto; }
#ask-box input#ask-question { flex: 1 1 320px; }
#ask-box button:disabled { opacity: 0.6; cursor: progress; }
#ask-box p#ask-status { flex-basis: 100%; margin: 0; font-size: 0.85rem; color: var(--muted); min-height: 1.1em; }
p.tier { color: var(--accent); font-size: 0.8rem; font-weight: bold; margin: 0 0 0.35rem; }

.warning {
  background: var(--warn-bg);
  color: var(--warn-fg);
  border: 1px solid var(--warn-border);
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  font-weight: bold;
  margin: 0 0 0.75rem;
}

#conditions-summary { color: var(--muted); font-size: 0.9rem; margin: 0 0 0.35rem; }
#results-summary { font-weight: bold; margin: 0 0 0.75rem; }

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
}
table {
  border-collapse: collapse;
  width: 100%;
  min-width: 760px;
  font-size: 0.85rem;
}
th, td {
  padding: 0.4rem 0.6rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
thead th {
  position: sticky;
  top: 0;
  background: var(--bg);
}
tbody tr:nth-child(odd) { background: var(--row-alt); }
tr.group-header td {
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: bold;
  white-space: normal;
}
td.alias { color: var(--muted); }
.cap-notice { color: var(--muted); font-size: 0.85rem; margin: 0.5rem 0 0; }

footer#source-footer {
  padding: 1.25rem 1rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
footer#source-footer a { color: var(--accent); }

@media (max-width: 600px) {
  header, main { padding-left: 0.75rem; padding-right: 0.75rem; }
  #ask-box, #query-box { flex-direction: column; align-items: stretch; }
}