:root {
  --bg: #f4f6f2;
  --surface: #ffffff;
  --ink: #1f2a22;
  --muted: #66736a;
  --line: #dfe5dc;
  --brand: #2f6b47;
  --brand-ink: #ffffff;
  --brand-soft: #e5efe7;
  --warn: #9a5b00;
  --warn-soft: #fff4e0;
  --danger: #b3261e;
  --danger-soft: #fbe9e7;
  --ok-soft: #e3f2e6;
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121714; --surface: #1b221d; --ink: #e6ece7; --muted: #9aa69d; --line: #2c362f;
    --brand: #6fbf8c; --brand-ink: #0f1a13; --brand-soft: #22322a; --warn: #f0b45a; --warn-soft: #33281a;
    --danger: #f2877e; --danger-soft: #3a1f1d; --ok-soft: #1f3326; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", "Malgun Gothic", "Noto Sans KR", sans-serif;
  font-size: 16px; line-height: 1.5; -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 460px; margin: 0 auto; padding: 32px 16px 48px; }
.wrap.wide { max-width: 1040px; }
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; }
.brand .mark { width: 36px; height: 36px; border-radius: 10px; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-weight: 700; }
.brand .t1 { font-size: 13px; color: var(--muted); }
.brand .t2 { font-size: 18px; font-weight: 700; letter-spacing: -0.02em; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card + .card { margin-top: 14px; }
h1 { font-size: 22px; margin: 0 0 4px; letter-spacing: -0.02em; }
h2 { font-size: 17px; margin: 0 0 12px; }
p.sub { color: var(--muted); margin: 0 0 18px; font-size: 14px; }
label { display: block; font-size: 14px; font-weight: 600; margin: 14px 0 6px; }
input, select {
  width: 100%; padding: 12px 14px; font-size: 17px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); font-family: inherit;
}
input:focus, select:focus { outline: 2px solid var(--brand); outline-offset: 1px; border-color: transparent; }
input.code { letter-spacing: 0.3em; font-variant-numeric: tabular-nums; }
.hint { font-size: 13px; color: var(--muted); margin-top: 6px; }
button, .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 12px 16px; border-radius: 10px; border: 1px solid transparent; font-size: 15px; font-weight: 600;
  cursor: pointer; font-family: inherit; text-decoration: none; background: var(--brand); color: var(--brand-ink); white-space: nowrap;
}
button:disabled { opacity: .5; cursor: default; }
button.block { width: 100%; margin-top: 20px; padding: 14px; font-size: 16px; }
button.ghost, .btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
button.small, .btn.small { padding: 7px 11px; font-size: 13px; }
button.danger { background: transparent; color: var(--danger); border-color: var(--line); }
.msg { margin-top: 14px; padding: 10px 12px; border-radius: 10px; font-size: 14px; display: none; }
.msg.show { display: block; }
.msg.err { background: var(--danger-soft); color: var(--danger); }
.msg.ok { background: var(--ok-soft); color: var(--brand); }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.hidden { display: none !important; }
.slip { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 14px 0; border-top: 1px solid var(--line); }
.slip:first-child { border-top: 0; }
.slip .period { font-weight: 700; font-size: 17px; }
.slip .meta { font-size: 13px; color: var(--muted); }
.slip .actions { display: flex; gap: 6px; }
.empty { color: var(--muted); text-align: center; padding: 24px 0; font-size: 14px; }
.foot { text-align: center; color: var(--muted); font-size: 12px; margin-top: 24px; }
button.link, .link { color: var(--muted); font-size: 13px; background: none; border: 0; padding: 0; cursor: pointer; text-decoration: underline; font-weight: 400; }

/* 관리자 */
.tabs { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; }
.tabs button { background: transparent; color: var(--muted); border: 1px solid var(--line); }
.tabs button.on { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.drop { border: 2px dashed var(--line); border-radius: var(--radius); padding: 34px 16px; text-align: center; color: var(--muted); cursor: pointer; }
.drop.over { border-color: var(--brand); background: var(--brand-soft); color: var(--ink); }
.drop strong { color: var(--ink); display: block; font-size: 16px; margin-bottom: 4px; }
.tablewrap { overflow-x: auto; margin-top: 14px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 12px; color: var(--muted); font-weight: 600; white-space: nowrap; }
td input, td select { font-size: 14px; padding: 7px 9px; min-width: 110px; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.badge.ok { background: var(--ok-soft); color: var(--brand); }
.badge.new { background: var(--brand-soft); color: var(--ink); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.off { background: var(--danger-soft); color: var(--danger); }
.warnline { font-size: 12px; color: var(--warn); margin-top: 3px; }
.pinbox { font-family: ui-monospace, Menlo, monospace; font-size: 18px; font-weight: 700; letter-spacing: .15em; }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; }
.inline-form > div { flex: 1; min-width: 140px; }
.inline-form label { margin-top: 0; }
.cell-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.period-head { margin: 18px 0 4px; font-weight: 700; }
@media (max-width: 600px) {
  .card { padding: 18px; }
  .wrap { padding-top: 22px; }
}
@media print {
  body * { visibility: hidden; }
  #printArea, #printArea * { visibility: visible; }
  #printArea { position: absolute; left: 0; top: 0; width: 100%; }
}

/* 처음 등록 */
.first-time { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.first-time button { flex-shrink: 0; }
.steps { display: flex; gap: 6px; margin-bottom: 14px; }
.steps span { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 99px; background: var(--bg); color: var(--muted); }
.steps span.on { background: var(--brand-soft); color: var(--brand); }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; margin: 18px 0 2px; background: var(--bg); border-radius: 12px; border: 1px solid var(--line); }
.seg button { background: transparent; color: var(--muted); padding: 10px 8px; font-size: 14px; }
.seg button.on { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.unit { position: relative; }
.unit input { padding-right: 40px; font-variant-numeric: tabular-nums; }
.unit span { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.codebox { font-family: ui-monospace, Menlo, monospace; font-size: 28px; font-weight: 700; letter-spacing: .2em; text-align: center; padding: 14px; background: var(--brand-soft); border-radius: 10px; margin: 12px 0; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }