:root {
  --paper: #f5f6f8;
  --surface: #ffffff;
  --ink: #1f2328;
  --muted: #5d6670;
  --line: #dde1e6;
  --run: #1e7f4f;
  --run-soft: #e6f2ec;
  --stop: #5b6470;
  --off: #c0362c;
  --off-soft: #fbeceb;
  --warn: #9a5b00;
  --warn-soft: #fbf1e1;
  --info: #2a5bb0;
  --info-soft: #e8eef9;
  --radius: 10px;
  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.55 var(--font);
  font-variant-numeric: tabular-nums;
}
h1, h2, p { margin: 0; }
a { color: var(--info); }
:focus-visible { outline: 3px solid var(--info); outline-offset: 2px; }

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 24px 48px;
  display: grid;
  gap: 20px;
}

/* 상단 */
.head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.head h1 { font-size: 24px; line-height: 1.25; font-weight: 700; letter-spacing: -0.02em; }
.sub { color: var(--muted); margin-top: 4px; }
.head-side { display: grid; justify-items: end; gap: 6px; flex-shrink: 0; }
.status {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  font-weight: 700; font-size: 14px; white-space: nowrap;
}
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.tone-neutral { background: #eceef1; color: var(--stop); }
.tone-info { background: var(--info-soft); color: var(--info); }
.tone-good { background: var(--run-soft); color: #17653e; }
.tone-warn { background: var(--warn-soft); color: var(--warn); }
.tone-bad { background: var(--off-soft); color: var(--off); }
.mode { font-size: 12px; color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 1px 8px; }
.mode.live { color: var(--off); border-color: var(--off); font-weight: 700; }

.alert {
  border-left: 4px solid var(--off);
  background: var(--off-soft);
  color: #7d1f19;
  padding: 12px 16px;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-weight: 600;
}

/* 요약 숫자: 한 줄을 세 칸으로 나눔 */
.stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
}
.stat { padding: 16px 20px; display: grid; gap: 2px; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat-label { color: var(--muted); font-size: 13px; }
.stat-value b { font-size: 32px; line-height: 1.15; font-weight: 700; letter-spacing: -0.02em; }
.stat-value small { font-size: 15px; color: var(--muted); margin-left: 3px; }
.stat-value b.check { font-size: 20px; color: var(--off); }

/* 공통 블록 */
.block { display: grid; gap: 10px; }
.block h2 { font-size: 15px; font-weight: 700; }
.block-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }

/* CSV */
.drop {
  display: grid; gap: 2px; cursor: pointer;
  background: var(--surface); border: 1.5px dashed #b9c0c8; border-radius: var(--radius);
  padding: 16px 20px;
}
.drop:hover, .drop.over { border-color: var(--info); background: #fafbfd; }
.drop:focus-within { outline: 3px solid var(--info); outline-offset: 2px; }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop-main { font-weight: 600; word-break: break-all; }
.drop-meta { color: var(--muted); font-size: 13px; }
.drop-meta.ok { color: var(--run); }
.drop-meta.bad { color: var(--off); }
.upload-result { font-size: 14px; padding: 10px 14px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.upload-result.bad { border-color: var(--off); background: var(--off-soft); color: #7d1f19; }
.upload-result ul { margin: 6px 0 0; padding-left: 18px; }

/* 순환 트랙 */
.track {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 8px;
}
.group {
  border: 1.5px solid var(--line); background: var(--surface); border-radius: var(--radius);
  padding: 10px 12px; display: grid; gap: 1px;
}
.group-name { font-weight: 700; font-size: 17px; }
.group-size { color: var(--muted); font-size: 13px; }
.group-state { font-size: 12px; color: var(--muted); min-height: 18px; }
.group.current { background: var(--run); border-color: var(--run); color: #fff; }
.group.current .group-size, .group.current .group-state { color: #ffffff; }
.group.next { border-style: dashed; border-color: var(--run); }
.group.next .group-state { color: var(--run); font-weight: 600; }
.group.done { background: #eef0f2; }
.legend { color: var(--muted); font-size: 12px; display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; margin-left: 6px; }
.dot-current { background: var(--run); }
.dot-next { border: 1.5px dashed var(--run); }
.dot-done { background: #dfe2e6; }
.empty { color: var(--muted); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }

/* 버튼 3개 — 한 줄 */
.actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.btn {
  appearance: none; border: 0; border-radius: var(--radius);
  min-height: 52px; padding: 0 16px;
  font: 700 17px/1 var(--font); color: #fff; cursor: pointer;
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
  transition: transform 0.08s ease, filter 0.15s ease;
}
.btn:hover:not(:disabled) { filter: brightness(1.08); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { cursor: not-allowed; opacity: 0.45; }
.btn-run { background: var(--run); }
.btn-stop { background: var(--stop); }
.btn-off { background: var(--off); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.action-msg { min-height: 22px; font-weight: 600; margin-top: -8px; }
.action-msg.ok { color: var(--run); }
.action-msg.bad { color: var(--off); }

/* 하단 */
.foot { display: grid; gap: 12px; border-top: 1px solid var(--line); padding-top: 16px; }
.facts { margin: 0; display: grid; gap: 8px; }
.facts div { display: grid; grid-template-columns: 112px 1fr; gap: 12px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; font-weight: 600; }
.log summary { cursor: pointer; color: var(--muted); font-weight: 600; }
.log ol { margin: 8px 0 0; padding-left: 0; list-style: none; font-size: 13px; display: grid; gap: 4px; max-height: 320px; overflow: auto; }
.log li { color: var(--muted); }
.log time { color: var(--ink); margin-right: 8px; }
.who { color: var(--muted); font-size: 13px; }

/* 확인 창 */
.confirm { border: 0; border-radius: 14px; padding: 0; width: min(440px, calc(100vw - 32px)); color: var(--ink); }
.confirm::backdrop { background: rgba(23, 27, 31, 0.45); }
.confirm form { padding: 22px; display: grid; gap: 14px; }
.confirm h2 { font-size: 18px; }
.confirm p { color: var(--muted); }
.confirm-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.confirm-actions .btn { min-height: 46px; font-size: 16px; }

/* 로그인 등 단순 페이지 */
body.plain { display: grid; place-items: center; min-height: 100dvh; padding: 16px; }
.plain-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 28px; display: grid; gap: 14px; max-width: 420px; width: 100%; }
.plain-card h1 { font-size: 20px; }
.muted { color: var(--muted); font-size: 13px; }
.login-form { display: grid; gap: 8px; }
.login-form label { font-weight: 600; font-size: 14px; }
.login-form input { font: inherit; padding: 10px 12px; border: 1px solid #b9c0c8; border-radius: var(--radius); }
.login-form input:focus-visible { outline: 3px solid var(--info); outline-offset: 1px; border-color: var(--info); }
.login-form .btn { margin-top: 8px; }
.form-error { color: #7d1f19; background: var(--off-soft); border-radius: var(--radius); padding: 10px 12px; font-weight: 600; }

@media (max-width: 640px) {
  .page { padding: 20px 16px 36px; gap: 16px; }
  .head { flex-direction: column; }
  .head-side { justify-items: start; grid-auto-flow: column; align-items: center; }
  .head h1 { font-size: 21px; }
  .stat { padding: 12px; }
  .stat-value b { font-size: 26px; }
  .actions { gap: 8px; }
  .btn { font-size: 16px; padding: 0 8px; }
  .facts div { grid-template-columns: 112px 1fr; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}