:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2328;
  --muted: #6a737d;
  --border: #d8dde3;
  --primary: #2563eb;
  --primary-text: #ffffff;
  --ok: #1a7f37;
  --ok-bg: #dafbe1;
  --changed: #9a6700;
  --changed-bg: #fff3c4;
  --error: #cf222e;
  --error-bg: #ffe4e6;
  --add-bg: #e6ffec;
  --del-bg: #ffebe9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --card: #161b22;
    --text: #e6edf3;
    --muted: #8b949e;
    --border: #30363d;
    --primary: #3b82f6;
    --ok: #3fb950;
    --ok-bg: #12261e;
    --changed: #d29922;
    --changed-bg: #2e2410;
    --error: #f85149;
    --error-bg: #3a1618;
    --add-bg: #12261e;
    --del-bg: #3a1618;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
  font-size: 15px;
  line-height: 1.6;
}
a { color: var(--primary); }
.topbar {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; text-decoration: none; color: var(--text); }
.topbar nav { display: flex; gap: 16px; align-items: center; }
main { max-width: 1000px; margin: 0 auto; padding: 16px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 8px;
  padding: 16px 20px; margin-bottom: 16px;
}
.card.narrow { max-width: 420px; margin: 40px auto; }
h1 { font-size: 1.4rem; margin: 0 0 8px; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }
.muted { color: var(--muted); }
.hint { display: block; color: var(--muted); font-size: 0.85rem; font-weight: normal; }

label { display: block; font-weight: 600; font-size: 0.9rem; }
input[type=text], input[type=url], input[type=password], select, textarea {
  display: block; width: 100%; margin-top: 4px; padding: 8px 10px;
  font: inherit; font-weight: normal; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 6px;
}
textarea { font-family: ui-monospace, Consolas, monospace; font-size: 0.9rem; }
label.check { display: flex; gap: 8px; align-items: center; font-weight: normal; }
.stack { display: grid; gap: 12px; }
.grid-form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-items: end; }
.grid-form .wide { grid-column: 1 / -1; }
.inline, .inline-form { display: inline; }
.inline-form label { display: inline-block; }

button {
  font: inherit; cursor: pointer; padding: 8px 16px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
}
button.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); font-weight: 600; }
button.small { padding: 4px 10px; font-size: 0.85rem; }
button.danger { color: var(--error); border-color: var(--error); }
button.link { border: none; background: none; padding: 0; color: var(--primary); text-decoration: underline; }
button:disabled { opacity: 0.6; cursor: wait; }

.flash { padding: 10px 14px; border-radius: 6px; margin: 0 0 16px; background: var(--ok-bg); }
.flash-error { background: var(--error-bg); color: var(--error); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 0.85rem; color: var(--muted); font-weight: 600; }
.row-changed { background: var(--changed-bg); }
.site-name { font-weight: 600; }
.url { font-size: 0.8rem; word-break: break-all; }
.nowrap { white-space: nowrap; }

.badge {
  display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 0.8rem; font-weight: 600;
  background: var(--bg); color: var(--muted); border: 1px solid var(--border); white-space: nowrap;
}
.badge-ok { background: var(--ok-bg); color: var(--ok); border-color: transparent; }
.badge-changed { background: var(--changed-bg); color: var(--changed); border-color: var(--changed); }
.badge-error { background: var(--error-bg); color: var(--error); border-color: transparent; }

.meta { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0; }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; }

.diff {
  font-family: ui-monospace, Consolas, "BIZ UDGothic", monospace; font-size: 0.85rem;
  border: 1px solid var(--border); border-radius: 6px; overflow: hidden; margin-top: 8px;
}
.d { padding: 2px 10px; white-space: pre-wrap; word-break: break-all; }
.d .mark { display: inline-block; width: 1.5em; color: var(--muted); user-select: none; }
.d-add { background: var(--add-bg); }
.d-del { background: var(--del-bg); text-decoration: line-through; text-decoration-color: var(--muted); }
.d-skip { color: var(--muted); background: var(--bg); text-align: center; font-size: 0.8rem; }
.code {
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  padding: 10px; overflow-x: auto; font-size: 0.85rem;
}
.danger-zone { border-color: var(--error); }

@media (max-width: 640px) {
  .grid-form { grid-template-columns: 1fr; }
  .card { padding: 14px; }
}
.test-mail { margin-top: 12px; }

fieldset { border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px 16px; margin: 0; display: grid; gap: 12px; }
legend { font-weight: 700; padding: 0 6px; }
code { font-family: ui-monospace, Consolas, monospace; font-size: 0.85em; background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 0 4px; }
.cond-list { display: grid; gap: 8px; }
.cond-row { display: grid; grid-template-columns: 2fr 1.4fr 2fr; gap: 8px; }
.cond-row input, .cond-row select { margin-top: 0; }
.tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 4px; }
.tag { font-size: 0.75rem; padding: 0 6px; border-radius: 4px; background: var(--bg); border: 1px solid var(--border); color: var(--muted); }
.reasons { margin: 8px 0; padding-left: 20px; font-weight: 600; color: var(--changed); }
.counts { margin-bottom: 12px; }
.preview { max-height: 360px; overflow-y: auto; }
@media (max-width: 640px) {
  .cond-row { grid-template-columns: 1fr; padding-bottom: 8px; border-bottom: 1px dashed var(--border); }
}

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
input[type=datetime-local], input[type=time] {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 6px; padding: 7px 8px;
}
input[type=datetime-local] { display: block; width: 100%; margin-top: 4px; font-weight: normal; }
.label { font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; }
.sched-list { display: grid; gap: 8px; margin-bottom: 6px; }
.sched-row { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; padding: 8px; border: 1px dashed var(--border); border-radius: 6px; }
.sched-time { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.sched-time select { width: auto; margin-top: 0; }
.sched-days { display: flex; gap: 4px; flex-wrap: wrap; }
label.day { display: inline-flex; align-items: center; gap: 2px; font-weight: normal; font-size: 0.85rem; }
.tag-strong { color: var(--changed); border-color: var(--changed); }
@media (max-width: 640px) {
  .two-col { grid-template-columns: 1fr; }
}

a.button {
  display: inline-block; text-decoration: none; padding: 8px 16px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
}
a.button.small { padding: 4px 10px; font-size: 0.85rem; }
td.actions { display: flex; gap: 6px; align-items: center; }
#edit { scroll-margin-top: 16px; }