:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --line: #dfe4ea;
  --text: #1f2933;
  --muted: #6b7684;
  --accent: #1d6fd8;
  --accent-soft: #e8f1fd;
  --danger: #dc2626;
  --radius: 8px;
}

* { box-sizing: border-box; }

/* .modal / .overlay / .custom-range 에 준 display:flex 가 브라우저 기본
   [hidden] 규칙을 이겨서, 숨겨야 할 것들이 계속 떠 있었다. */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: "Pretendard", "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

/* ── 상단 ────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.topbar h1 { margin: 0; font-size: 18px; }
.topbar-sub { color: var(--muted); font-size: 13px; }
.who { margin-left: auto; color: var(--muted); font-size: 13px; display: flex; align-items: baseline; gap: 8px; }

/* ── 로그인 ──────────────────────────────────────────── */
.login {
  position: fixed; inset: 0; background: var(--bg); z-index: 100;
  display: flex; align-items: center; justify-content: center;
}
.login-box {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 28px 32px; width: 340px; max-width: 92vw;
  display: flex; flex-direction: column; gap: 10px;
}
.login-box h2 { margin: 0; font-size: 20px; }
.login-box .hint { margin: 0 0 4px; }
.login-box input {
  padding: 9px 10px; border: 1px solid var(--line); border-radius: 6px; font-size: 14px;
}
.login-error { color: var(--danger); font-size: 13px; min-height: 18px; }

/* ── 레이아웃 ────────────────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 16px;
  padding: 16px 20px 40px;
  align-items: start;
}

.side { display: flex; flex-direction: column; gap: 12px; position: sticky; top: 16px; }

.block {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
}
.block h2 { margin: 0 0 8px; font-size: 13px; color: var(--muted); font-weight: 600; }

/* ── 현장 / 센서 목록 ───────────────────────────────── */
.site-list button {
  display: block; width: 100%; text-align: left;
  padding: 8px 10px; margin-bottom: 4px;
  border: 1px solid transparent; border-radius: 6px;
  background: none; cursor: pointer; font-size: 14px; color: var(--text);
}
.site-list button:hover { background: var(--bg); }
.site-list button.on { background: var(--accent-soft); border-color: var(--accent); font-weight: 600; }
.site-list .stale { color: var(--muted); }
.site-list .tag {
  display: block; font-size: 11px; color: var(--muted); font-weight: 400; margin-top: 2px;
}

.sensor-list { max-height: 260px; overflow-y: auto; }
.sensor-list label {
  display: flex; align-items: center; gap: 7px;
  padding: 5px 4px; border-radius: 5px; cursor: pointer;
}
.sensor-list label:hover { background: var(--bg); }
.sensor-list .stale-dot { margin-left: auto; font-size: 11px; color: var(--muted); }

.row-btns { display: flex; gap: 6px; margin-bottom: 6px; }
.loading-line { padding: 8px 10px; color: var(--muted); font-size: 13px; }

.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip-row button {
  padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--card); cursor: pointer; font-size: 13px; color: var(--text);
}
.chip-row button.on { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ── 버튼 ────────────────────────────────────────────── */
button { font-family: inherit; }
.mini {
  padding: 5px 10px; font-size: 12px; border: 1px solid var(--line);
  border-radius: 6px; background: var(--card); cursor: pointer; color: var(--text);
}
.mini:hover { background: var(--bg); }
.primary {
  background: var(--accent); border: 1px solid var(--accent); color: #fff;
  padding: 8px 16px; border-radius: 6px; cursor: pointer; font-size: 14px;
}
.mini.primary { padding: 5px 12px; font-size: 12px; }
.primary:hover { filter: brightness(1.08); }
.ghost {
  background: var(--card); border: 1px solid var(--line); color: var(--text);
  padding: 8px 14px; border-radius: 6px; cursor: pointer; font-size: 14px;
}
.ghost:hover { background: var(--bg); }

/* ── 도구모음 ────────────────────────────────────────── */
.content { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.spacer { flex: 1; }

.periods { display: flex; gap: 0; }
.periods button {
  padding: 8px 14px; border: 1px solid var(--line); background: var(--card);
  cursor: pointer; font-size: 13px; color: var(--text); margin-left: -1px;
}
.periods button:first-child { border-radius: 6px 0 0 6px; margin-left: 0; }
.periods button:last-child  { border-radius: 0 6px 6px 0; }
.periods button.on { background: var(--accent); border-color: var(--accent); color: #fff; position: relative; }

.ratio { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 5px; }
.ratio select {
  padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px;
  font-size: 13px; font-family: inherit; color: var(--text); background: var(--card);
}

.custom-range {
  display: flex; align-items: center; gap: 6px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 6px; padding: 5px 10px;
}

/* ── 그래프 ──────────────────────────────────────────── */
/* 보고서에 넣는 그림이라 너무 가로로 길면 곤란하다. 화면 폭을 다 쓰지 않는다. */
.chart-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px 10px;
  max-width: 1080px;
}
.chart-head { margin-bottom: 4px; }
.chart-title {
  width: 100%; border: none; border-bottom: 1px dashed transparent;
  font-size: 16px; font-weight: 600; padding: 4px 2px; color: var(--text);
  background: none; font-family: inherit;
}
.chart-title:hover  { border-bottom-color: var(--line); }
.chart-title:focus  { outline: none; border-bottom-color: var(--accent); }
.chart { position: relative; width: 100%; height: 630px; }
.chart canvas { width: 100% !important; height: 100% !important; }

/* 확대해서 구간을 다시 불러올 때. 화면을 덮지 않는다 —
   전체 오버레이를 띄우면 그래프가 사라져서 '초기화된' 것처럼 보인다. */
.chart-busy {
  position: absolute; top: 6px; right: 8px;
  background: rgba(29, 111, 216, .92); color: #fff;
  padding: 4px 10px; border-radius: 999px; font-size: 12px;
  pointer-events: none;
}

/* 표시 방식 조절 — dps-graph 와 같은 조작 */
.chart-ctl {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 8px 2px 2px; font-size: 12px; color: var(--muted);
}
.chart-ctl label { display: flex; align-items: center; gap: 5px; }
.chart-ctl select, .chart-ctl input {
  padding: 4px 7px; border: 1px solid var(--line); border-radius: 5px;
  font-size: 12px; font-family: inherit; color: var(--text); background: var(--card);
}
.chart-ctl input[type="number"] { width: 58px; }
.chart-ctl #yMin, .chart-ctl #yMax { width: 64px; }
.chart-ctl label span { color: var(--muted); }
.chart-ctl .chk { cursor: pointer; gap: 4px; }
.chart-ctl .chk input { width: auto; padding: 0; cursor: pointer; }
.ctl-hint { flex-basis: 100%; text-align: right; }

.chart-foot {
  border-top: 1px solid var(--line); margin-top: 6px; padding-top: 8px;
  font-size: 12px; color: var(--muted); line-height: 1.7;
}

.overlay {
  position: absolute; inset: 0; background: rgba(255, 255, 255, .72);
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius); font-size: 14px; color: var(--muted);
}

/* ── 안내문 ──────────────────────────────────────────── */
.notes:empty { display: none; }
.notes {
  max-width: 1080px;
  background: #fff8e6; border: 1px solid #f0dca8; border-radius: var(--radius);
  padding: 10px 14px; font-size: 13px; line-height: 1.8;
}

/* ── 직원 조작 영역 ─────────────────────────────────── */
.ops {
  display: grid; gap: 12px; max-width: 1400px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.op-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px 14px;
}
.op-card h3 { margin: 0 0 4px; font-size: 14px; }
.hint { margin: 0 0 10px; font-size: 12px; color: var(--muted); line-height: 1.6; }
.op-row { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.op-row input, .op-row select {
  padding: 6px 9px; border: 1px solid var(--line); border-radius: 6px;
  font-size: 13px; font-family: inherit; color: var(--text); background: var(--card);
}
.op-row .sm   { width: 110px; }
.op-row .grow { flex: 1; min-width: 120px; }
.op-info { font-size: 12px; color: var(--muted); margin-top: 8px; }
.op-info.warn {
  color: #8a6100; background: #fff8e6; border: 1px solid #f0dca8;
  border-radius: 6px; padding: 8px 10px; line-height: 1.6;
}

/* 지금 걸려 있는 기준일 상태 */
.op-now {
  font-size: 13px; padding: 7px 10px; border-radius: 6px;
  margin-bottom: 10px; border: 1px solid transparent;
}
.op-now.saved { background: #eaf5ec; border-color: #bcdcc4; color: #1e6b34; }
.op-now.temp  { background: #fff8e6; border-color: #f0dca8; color: #8a6100; }
.op-now.none  { background: var(--bg); color: var(--muted); }

.op-list { margin-top: 10px; display: flex; flex-direction: column; gap: 5px; }
.op-list .item {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg); border-radius: 6px; padding: 6px 10px; font-size: 13px;
}
.op-list .item .val { font-weight: 600; }
.op-list .item .memo { color: var(--muted); font-size: 12px; }
.op-list .item .del {
  margin-left: auto; border: none; background: none; color: var(--danger);
  cursor: pointer; font-size: 12px;
}

/* ── 임계치 설정 모달 ───────────────────────────────── */
.modal {
  position: fixed; inset: 0; background: rgba(20, 25, 32, .45);
  display: flex; align-items: center; justify-content: center; z-index: 50;
}
.modal-box {
  background: var(--card); border-radius: 10px; padding: 18px 20px;
  width: 460px; max-width: 92vw;
}
.modal-head { display: flex; align-items: center; margin-bottom: 4px; }
.modal-head h2 { margin: 0; font-size: 16px; }
.modal-head .x {
  margin-left: auto; border: none; background: none; cursor: pointer;
  font-size: 16px; color: var(--muted);
}
.th-table { width: 100%; border-collapse: collapse; margin: 4px 0 12px; }
.th-table th {
  text-align: left; font-size: 12px; color: var(--muted);
  font-weight: 600; padding: 6px 4px; border-bottom: 1px solid var(--line);
}
.th-table td { padding: 6px 4px; border-bottom: 1px solid var(--line); }
.th-table input {
  width: 120px; padding: 5px 8px; border: 1px solid var(--line);
  border-radius: 6px; font-size: 13px; font-family: inherit;
}
.th-table .swatch {
  display: inline-block; width: 10px; height: 10px;
  border-radius: 2px; margin-right: 7px;
}
.set-sub {
  margin: 16px 0 4px; font-size: 14px;
  border-top: 1px solid var(--line); padding-top: 14px;
}
.modal-box .op-row { margin-bottom: 14px; }
.modal-foot { display: flex; align-items: center; gap: 10px; }
.modal-foot .primary { margin-left: auto; }

/* ── 토스트 ──────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #1f2933; color: #fff; padding: 10px 18px;
  border-radius: 999px; font-size: 13px; z-index: 100;
}