:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1a1d21;
  --muted: #5f6672;
  --border: #d9dde3;
  --accent: #1f5fbf;
  --accent-text: #ffffff;
  --danger: #b42318;
  --ok: #1d7a3f;
  --warn: #9a5b00;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --surface: #1a1f25;
    --text: #e8eaed;
    --muted: #9aa3ae;
    --border: #2c333c;
    --accent: #6ea0ff;
    --accent-text: #0b1220;
    --danger: #ff7b6b;
    --ok: #5ccf82;
    --warn: #f0b64a;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
}
a { color: var(--accent); }
h1 { font-size: 1.4rem; margin: 0 0 .75rem; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: .5rem;
  padding: .75rem 1rem; border-bottom: 1px solid var(--border); background: var(--surface);
}
.brand { font-weight: 700; text-decoration: none; color: var(--text); font-size: 1.1rem; }
.nav { display: flex; gap: .25rem; align-items: center; flex-wrap: wrap; }
.nav a, .nav .link { padding: .5rem .6rem; min-height: 44px; display: inline-flex; align-items: center; text-decoration: none; color: var(--muted); border-radius: 6px; }
.nav a[aria-current="page"] { color: var(--text); font-weight: 600; }

.container { max-width: 640px; margin: 0 auto; padding: 1rem; display: grid; gap: 1rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; }
.narrow { max-width: 420px; margin: 3rem auto 0; }

.stack { display: grid; gap: .75rem; }
.grid-2, .grid-3, .grid-4 { display: grid; gap: .75rem; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 480px) { .grid-3 { grid-template-columns: 1fr 1fr; } }
.row { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
.inline { display: inline; }

label { display: block; font-size: .9rem; color: var(--muted); margin-bottom: .25rem; }
input, select, button {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; padding: .6rem .75rem;
  min-height: 44px; width: 100%;
}
input[type="checkbox"] { width: 20px; height: 20px; min-height: 0; margin: 0 .5rem 0 0; }
fieldset { border: 1px solid var(--border); border-radius: 8px; padding: .75rem; margin: 0; }
legend { color: var(--muted); font-size: .9rem; padding: 0 .3rem; }
.check { display: flex; align-items: center; gap: .25rem; color: var(--text); min-height: 44px; margin: 0; flex-wrap: wrap; }

button { cursor: pointer; width: auto; }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
button.secondary { background: transparent; }
button.danger { color: var(--danger); border-color: var(--danger); background: transparent; }
button.link { background: none; border: none; color: var(--accent); padding: .25rem .5rem; min-height: 44px; }
button:disabled { opacity: .5; cursor: not-allowed; }

.hint { color: var(--muted); font-size: .9rem; margin: 0; }
.msg { padding: .6rem .75rem; border-radius: 8px; border: 1px solid; margin: 0 0 .75rem; }
.msg-error { color: var(--danger); border-color: var(--danger); }
.msg-ok { color: var(--ok); border-color: var(--ok); }
.msg-warn { color: var(--warn); border-color: var(--warn); }

.badge { display: inline-block; font-size: .8rem; padding: .1rem .5rem; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.badge-ok { color: var(--ok); border-color: var(--ok); }
.badge-no { color: var(--muted); }
.badge-wait { color: var(--warn); border-color: var(--warn); }
.status-polling { color: var(--accent); border-color: var(--accent); }
.status-reserved { color: var(--ok); border-color: var(--ok); }
.status-error { color: var(--danger); border-color: var(--danger); }
.status-timeout, .status-cancelled, .status-interrupted { color: var(--muted); }

.list { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.item { border: 1px solid var(--border); border-radius: 8px; padding: .6rem .75rem; display: grid; gap: .3rem; }
.compact .item { padding: .4rem .6rem; }
.item-main, .item-sub { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }
.item-sub { color: var(--muted); font-size: .9rem; }

.macro-head { display: flex; justify-content: space-between; align-items: center; gap: .5rem; }
.macro-cond { color: var(--muted); margin: .25rem 0 .75rem; }
.log { list-style: none; margin: .75rem 0 0; padding: .5rem .75rem; border: 1px solid var(--border); border-radius: 8px;
  max-height: 240px; overflow: auto; font-size: .9rem; font-variant-numeric: tabular-nums; }
.log li { padding: .15rem 0; }
.log time { color: var(--muted); margin-right: .4rem; }
.log-status { font-weight: 600; }
.trains:empty { display: none; }