/* Layout: 금전출납부 콘셉트. 초록 괘선 종이 위에 파란 잉크(들어온 돈), 빨간 잉크(빠진 돈).
   히어로는 좌측 입력 + 우측 급여 장부, 이후 사진 띠와 계산 섹션이 번갈아 이어지는 세로 흐름. */
:root {
  --paper: #F1F4EE;
  --sheet: #FBFCF8;
  --rule: #D3E0D6;
  --rule-strong: #A9C3B1;
  --ink: #1C2923;
  --muted: #5B6B63;
  --green: #2E6A4E;
  --green-soft: #DCEBE1;
  --red: #C03A2D;
  --blue: #2949A3;
  --shadow: 0 1px 0 rgba(255,255,255,.6) inset, 0 20px 40px -24px rgba(28,41,35,.35);

  --f-body: "Gothic A1", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --f-hand: "Nanum Pen Script", "Gothic A1", cursive;

  --s--1: clamp(.8rem, .78rem + .1vw, .86rem);
  --s-0: clamp(.95rem, .92rem + .15vw, 1.02rem);
  --s-1: clamp(1.12rem, 1.06rem + .3vw, 1.3rem);
  --s-2: clamp(1.4rem, 1.25rem + .7vw, 1.85rem);
  --s-3: clamp(1.8rem, 1.5rem + 1.5vw, 2.7rem);
  --s-4: clamp(2.2rem, 1.7rem + 2.6vw, 3.9rem);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #111714; --sheet: #172019; --rule: #26352C; --rule-strong: #35503F;
    --ink: #E6EEE8; --muted: #95A69C; --green: #6CC497; --green-soft: #1E3529;
    --red: #EF7262; --blue: #92AEF7; --shadow: 0 20px 40px -24px rgba(0,0,0,.7);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #111714; --sheet: #172019; --rule: #26352C; --rule-strong: #35503F;
  --ink: #E6EEE8; --muted: #95A69C; --green: #6CC497; --green-soft: #1E3529;
  --red: #EF7262; --blue: #92AEF7; --shadow: 0 20px 40px -24px rgba(0,0,0,.7);
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--f-body); font-size: var(--s-0); line-height: 1.7; -webkit-font-smoothing: antialiased; overflow-x: hidden; word-break: keep-all; overflow-wrap: anywhere; }
img { max-width: 100%; display: block; }
button, input { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; border-radius: 4px; }
.num { font-variant-numeric: tabular-nums; }

.wrap { width: 100%; max-width: 1140px; margin: 0 auto; padding-inline: 20px; }

/* 헤더 */
.top { border-bottom: 1px solid var(--rule-strong); background: var(--paper); position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10; }
.top__in { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-block: 12px; }
.logo { color: var(--ink); display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 900; font-size: 1.1rem; letter-spacing: -.02em; }
.logo__mark { width: 26px; height: 30px; border: 2px solid var(--green); border-radius: 3px; position: relative; background: repeating-linear-gradient(var(--sheet) 0 6px, var(--rule-strong) 6px 7px); }
.logo__mark::before { content: ""; position: absolute; left: 6px; top: 0; bottom: 0; width: 2px; background: var(--red); }
.nav { display: flex; gap: 2px; }
.nav a { text-decoration: none; color: var(--muted); font-size: var(--s--1); padding: 6px 12px; border-radius: 6px; }
.nav a:hover { color: var(--ink); background: var(--green-soft); }

/* 히어로 */
.hero { padding-block: clamp(32px, 5vw, 64px) clamp(24px, 4vw, 48px); }
.hero__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.hero h1 { font-size: var(--s-4); line-height: 1.16; letter-spacing: -.04em; font-weight: 900; margin: 0 0 16px; text-wrap: balance; }
.hero h1 .ink-blue { color: var(--blue); }
.hero__lead { color: var(--muted); margin: 0 0 28px; max-width: 32em; }

.inputs { display: grid; gap: 18px; }
.salary-input { display: grid; gap: 8px; }
.salary-input label { font-weight: 700; font-size: var(--s--1); color: var(--muted); }
.salary-field { display: flex; align-items: baseline; gap: 8px; border-bottom: 3px solid var(--ink); padding-bottom: 4px; }
.salary-field input { border: 0; background: transparent; font-size: var(--s-3); font-weight: 900; letter-spacing: -.03em; width: 100%; min-width: 0; padding: 0; font-variant-numeric: tabular-nums; }
.salary-field input:focus { outline: none; }
.salary-field span { font-size: var(--s-1); font-weight: 700; color: var(--muted); white-space: nowrap; }
.salary-field:focus-within { border-color: var(--green); }
input[type="range"] { width: 100%; accent-color: var(--green); }
.range-scale { position: relative; height: 1.2em; font-size: .72rem; color: var(--muted); margin-top: -4px; }
.range-scale span { position: absolute; transform: translateX(-50%); white-space: nowrap; }
.range-scale span:first-child { transform: none; }
.range-scale span:last-child { transform: translateX(-100%); }
.mini-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.mf { display: grid; gap: 4px; min-width: 0; }
.mf span { font-size: .78rem; color: var(--muted); font-weight: 600; }
.mf input, .field input { width: 100%; min-width: 0; border: 1px solid var(--rule-strong); background: var(--sheet); border-radius: 8px; padding: 9px 10px; font-variant-numeric: tabular-nums; }
.mf input:focus, .field input:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px var(--green-soft); }

/* 급여 장부 */
.ledger {
  position: relative; background: var(--sheet); border-radius: 4px; box-shadow: var(--shadow);
  border: 1px solid var(--rule-strong); padding: 0 0 18px;
  background-image: repeating-linear-gradient(to bottom, transparent 0 39px, var(--rule) 39px 40px);
  background-position: 0 56px;
}
.ledger::before, .ledger::after { content: ""; position: absolute; top: 0; bottom: 0; width: 1px; background: var(--red); opacity: .55; }
.ledger::before { left: 44px; }
.ledger::after { left: 48px; }
.ledger__head { display: flex; justify-content: space-between; align-items: center; height: 56px; padding: 0 18px 0 62px; border-bottom: 2px solid var(--green); }
.ledger__head b { font-size: var(--s-1); letter-spacing: -.02em; }
.ledger__head span { font-size: .78rem; color: var(--muted); }
.ledger__rows { list-style: none; margin: 0; padding: 0; }
.ledger__rows li { display: flex; justify-content: space-between; align-items: center; height: 40px; padding: 0 18px 0 62px; gap: 12px; }
.ledger__rows .lbl { display: flex; gap: 8px; align-items: baseline; min-width: 0; }
.ledger__rows .lbl small { color: var(--muted); font-size: .72rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ledger__rows .amt { font-variant-numeric: tabular-nums; font-weight: 700; white-space: nowrap; }
.ledger__rows .in .amt { color: var(--blue); }
.ledger__rows .out .amt { color: var(--red); }
.ledger__rows .muted .amt { color: var(--muted); font-weight: 400; }
.ledger__total { display: flex; justify-content: space-between; align-items: flex-end; padding: 18px 18px 0 62px; margin-top: 4px; border-top: 3px double var(--green); gap: 12px; flex-wrap: wrap; }
.ledger__total .lbl { font-weight: 700; }
.ledger__total .big { font-size: var(--s-3); font-weight: 900; color: var(--blue); letter-spacing: -.03em; line-height: 1; font-variant-numeric: tabular-nums; }
.hand { font-family: var(--f-hand); font-size: 1.45rem; line-height: 1.1; }
.hand--red { color: var(--red); }
.hand--blue { color: var(--blue); }
.ledger__note { position: absolute; right: 16px; bottom: -34px; transform: rotate(-3deg); }
.ledger__ratio { padding: 10px 18px 0 62px; color: var(--muted); font-size: var(--s--1); }

/* 사진 띠 */
.photo-band { margin-block: clamp(40px, 6vw, 72px) 0; }
.photo-band figure { margin: 0; position: relative; }
.photo-band img { width: 100%; aspect-ratio: 21 / 8; object-fit: cover; border-radius: 4px; filter: saturate(.92) contrast(1.02); }
.photo-band figcaption { position: absolute; left: 18px; bottom: -14px; background: var(--sheet); padding: 4px 12px; border-radius: 3px; box-shadow: var(--shadow); transform: rotate(-1.2deg); }

/* 섹션 */
.section { padding-block: clamp(48px, 7vw, 88px); }
.section + .section { border-top: 1px solid var(--rule-strong); }
.sec-head { margin-bottom: clamp(24px, 3vw, 36px); max-width: 44em; }
.sec-head h2 { font-size: var(--s-3); line-height: 1.2; letter-spacing: -.035em; font-weight: 900; margin: 0 0 8px; text-wrap: balance; }
.sec-head p { margin: 0; color: var(--muted); }

/* 세금 흐름 */
.flow { display: grid; gap: 14px; }
.flow__bar { display: flex; height: 64px; border-radius: 6px; overflow: hidden; border: 1px solid var(--rule-strong); }
.flow__bar span { display: block; height: 100%; min-width: 2px; position: relative; transition: flex-basis .4s ease; }
.flow__bar .net { background: var(--blue); }
.flow__bar .d0 { background: var(--red); opacity: 1; }
.flow__bar .d1 { background: var(--red); opacity: .82; }
.flow__bar .d2 { background: var(--red); opacity: .64; }
.flow__bar .d3 { background: var(--red); opacity: .5; }
.flow__bar .d4 { background: var(--red); opacity: .38; }
.flow__bar .d5 { background: var(--red); opacity: .28; }
.flow__legend { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px 16px; }
.flow__legend li { display: grid; grid-template-columns: 12px minmax(0, 1fr); gap: 2px 8px; align-items: center; font-size: var(--s--1); }
.flow__legend i { width: 12px; height: 12px; border-radius: 2px; background: var(--red); }
.flow__legend b { font-variant-numeric: tabular-nums; grid-column: 2; font-size: var(--s-0); }
.flow__sum { font-size: var(--s-1); margin: 0; }
.flow__sum b { color: var(--blue); }

/* 체감 */
.feel-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.feel { background: var(--sheet); border: 1px solid var(--rule-strong); border-radius: 6px; padding: 16px; display: grid; gap: 6px; align-content: start; }
.feel__big { font-size: var(--s-3); font-weight: 900; letter-spacing: -.04em; line-height: 1.05; font-variant-numeric: tabular-nums; }
.feel__big small { font-size: var(--s-0); font-weight: 700; margin-left: 2px; }
.feel__what { color: var(--muted); font-size: var(--s--1); margin: 0; }
.feel__price { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 6px; font-size: .78rem; color: var(--muted); margin-top: 6px; border-top: 1px dashed var(--rule-strong); padding-top: 8px; white-space: nowrap; }
.feel__price input { width: 100%; min-width: 0; border: 0; border-bottom: 1px solid var(--rule-strong); background: transparent; padding: 2px 0; font-variant-numeric: tabular-nums; text-align: right; }
.feel__price input:focus { outline: none; border-color: var(--green); }

.hourly { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 24px; margin-top: 28px; align-items: center; background: var(--green-soft); border-radius: 8px; padding: clamp(18px, 3vw, 28px); }
.hourly .mini-fields { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.hourly__out { display: grid; gap: 4px; }
.hourly__out .feel__big { color: var(--green); }
.hourly__out p { margin: 0; color: var(--muted); font-size: var(--s--1); }

/* 두 칸 계산기 */
.duo { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; }
.card { background: var(--sheet); border: 1px solid var(--rule-strong); border-radius: 6px; padding: clamp(18px, 3vw, 26px); display: grid; gap: 14px; align-content: start; min-width: 0; }
.card h3 { margin: 0; font-size: var(--s-1); letter-spacing: -.02em; }
.field { display: grid; gap: 4px; }
.field span { font-size: .78rem; color: var(--muted); font-weight: 600; }
.answer { font-size: var(--s-2); font-weight: 900; letter-spacing: -.03em; line-height: 1.25; margin: 0; }
.answer b { color: var(--blue); font-variant-numeric: tabular-nums; }
.sub { color: var(--muted); font-size: var(--s--1); margin: 0; }

.vs { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; }
.vs__col { display: grid; gap: 10px; min-width: 0; }
.vs__col h4 { margin: 0; font-size: var(--s-0); display: flex; align-items: center; gap: 8px; }
.vs__col h4 i { font-style: normal; width: 1.6em; height: 1.6em; display: inline-grid; place-items: center; border-radius: 4px; background: var(--ink); color: var(--sheet); font-size: .8rem; }
.vs__res { border-top: 2px solid var(--rule-strong); padding-top: 10px; font-size: var(--s--1); color: var(--muted); display: grid; gap: 2px; }
.vs__res b { color: var(--ink); font-size: var(--s-1); font-variant-numeric: tabular-nums; }
.vs__res.win b { color: var(--green); }
.verdict { margin: 0; font-weight: 700; }

.chart { width: 100%; height: auto; display: block; }
.chart .grid { stroke: var(--rule); stroke-width: 1; }
.chart .axis { fill: var(--muted); font-size: 11px; font-family: var(--f-body); }
.chart .la { fill: none; stroke: var(--muted); stroke-width: 2.5; }
.chart .lb { fill: none; stroke: var(--green); stroke-width: 2.5; }
.chart .area { fill: var(--green-soft); }
.chart .dot-b { fill: var(--green); }
.chart .dot-a { fill: var(--muted); }
.chart .lbl { font-size: 12px; font-family: var(--f-body); font-weight: 700; }
.chart .lbl-a { fill: var(--muted); }
.chart .lbl-b { fill: var(--green); }

/* 기준 */
.basis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.basis div { border-top: 2px solid var(--green); padding-top: 12px; }
.basis h3 { margin: 0 0 6px; font-size: var(--s-0); }
.basis p, .basis li { color: var(--muted); font-size: var(--s--1); margin: 0; }
.basis ul { margin: 0; padding-left: 1.1em; }
.foot { border-top: 1px solid var(--rule-strong); padding-block: 28px 44px; color: var(--muted); font-size: var(--s--1); }
.foot__in { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

@media (max-width: 960px) {
  .hero__grid, .duo, .hourly { grid-template-columns: minmax(0, 1fr); }
  .feel-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .basis { grid-template-columns: minmax(0, 1fr); }
  .photo-band img { aspect-ratio: 16 / 8; }
}
@media (max-width: 640px) {
  .nav { display: none; }
  .mini-fields, .hourly .mini-fields { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .vs { grid-template-columns: minmax(0, 1fr); }
  .photo-band img { aspect-ratio: 4 / 3; }
  .ledger::before { left: 30px; } .ledger::after { left: 34px; }
  .ledger__head, .ledger__rows li, .ledger__total, .ledger__ratio { padding-left: 46px; padding-right: 12px; }
}
@media (max-width: 400px) {
  .feel-grid { grid-template-columns: minmax(0, 1fr); }
}