/* 빚갚자 bitgapja.com — 장부(ledger) 콘셉트
   잉크 네이비 / 빨간펜(빚) / 도장 초록(절약) / 종이 배경 */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css');
@font-face {
  font-family: 'GmarketSans';
  src: url('https://fastly.jsdelivr.net/gh/projectnoonnu/noonfonts_2001@1.1/GmarketSansBold.woff') format('woff');
  font-weight: 700;
  font-display: swap;
}

:root {
  --paper: #F7F5F0;
  --card: #FFFFFF;
  --ink: #1B2A41;
  --ink-soft: #5A6A80;
  --line: #E3DFD6;
  --red: #C6382F;       /* 빨간펜: 빚, 이자 */
  --red-bg: #FBEEEC;
  --green: #1E7F4F;     /* 도장: 절약, 완제 */
  --green-bg: #EAF4EE;
  --hl: #FFE97F;        /* 형광펜 */
  --radius: 14px;
  --num: 'Pretendard Variable', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Pretendard Variable', Pretendard, -apple-system, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
}

.wrap { max-width: 640px; margin: 0 auto; padding: 0 18px; }

/* ── header ── */
header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.hd {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
}
.logo {
  font-family: 'GmarketSans', sans-serif;
  font-size: 20px; text-decoration: none; color: var(--ink);
  letter-spacing: -0.5px;
}
.logo .dot { color: var(--red); }
nav a {
  color: var(--ink-soft); text-decoration: none; font-size: 14px;
  margin-left: 14px;
}
nav a:hover { color: var(--ink); }

/* ── hero ── */
.hero { padding: 40px 0 8px; }
.hero h1 {
  font-family: 'GmarketSans', sans-serif;
  font-size: clamp(26px, 6vw, 34px);
  line-height: 1.35; letter-spacing: -0.5px;
}
.hero h1 .under {
  background: linear-gradient(transparent 62%, var(--hl) 62%);
}
.hero p.sub {
  margin-top: 12px; color: var(--ink-soft); font-size: 15px;
}

/* ── cards, forms ── */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; margin-top: 16px;
}
.card h2 {
  font-size: 15px; font-weight: 700; color: var(--ink);
  display: flex; align-items: center; gap: 8px; margin-bottom: 14px;
}
.card h2 .tag {
  font-size: 11px; font-weight: 600; color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: 99px; padding: 2px 8px;
}

.loan {
  border: 1px solid var(--line); border-radius: 10px;
  padding: 14px; margin-bottom: 10px; position: relative;
  background: #FDFCFA;
}
.loan .rm {
  position: absolute; top: 10px; right: 10px;
  border: none; background: none; color: var(--ink-soft);
  font-size: 18px; cursor: pointer; line-height: 1; padding: 4px;
}
.loan .rm:hover { color: var(--red); }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.field { margin-bottom: 10px; }
.field:last-child { margin-bottom: 0; }
.field label {
  display: block; font-size: 12px; color: var(--ink-soft);
  margin-bottom: 4px; font-weight: 600;
}
.field input {
  width: 100%; border: 1px solid var(--line); border-radius: 8px;
  padding: 11px 12px; font-size: 16px; font-family: var(--num);
  background: #fff; color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.field input:focus {
  outline: 2px solid var(--ink); outline-offset: -1px; border-color: var(--ink);
}
.field .won { position: relative; }
.field .won::after {
  content: attr(data-unit); position: absolute; right: 12px; top: 50%;
  transform: translateY(-50%); color: var(--ink-soft); font-size: 13px;
  pointer-events: none;
}

.btn-add {
  width: 100%; border: 1px dashed var(--ink-soft); background: none;
  border-radius: 10px; padding: 12px; font-size: 14px; font-weight: 600;
  color: var(--ink); cursor: pointer;
}
.btn-add:hover { background: #F1EFE9; }

.btn-go {
  width: 100%; border: none; border-radius: 12px; padding: 16px;
  background: var(--ink); color: #fff; font-size: 17px; font-weight: 700;
  font-family: inherit; cursor: pointer; margin-top: 16px;
  letter-spacing: -0.3px;
}
.btn-go:hover { background: #0F1B2E; }
.btn-go:disabled { background: var(--ink-soft); cursor: not-allowed; }

.hint { font-size: 12px; color: var(--ink-soft); margin-top: 8px; }
.err {
  margin-top: 12px; background: var(--red-bg); color: var(--red);
  border-radius: 8px; padding: 10px 12px; font-size: 13.5px; display: none;
}

/* ── results ── */
#result { display: none; }

.verdict {
  background: var(--ink); color: #fff; border-radius: var(--radius);
  padding: 24px 20px; margin-top: 20px;
}
.verdict .eyebrow {
  font-size: 12px; color: #AFC0D8; font-weight: 600; letter-spacing: 0.5px;
}
.verdict .big {
  font-family: 'GmarketSans', sans-serif; font-size: clamp(21px, 5.4vw, 27px);
  margin-top: 8px; line-height: 1.4;
}
.verdict .big .save {
  background: linear-gradient(transparent 55%, rgba(255,233,127,.45) 55%);
  color: var(--hl);
}
.verdict .note { font-size: 13px; color: #AFC0D8; margin-top: 10px; }

.cmp { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.strat {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px; position: relative;
}
.strat.win { border: 2px solid var(--green); }
.strat .badge {
  position: absolute; top: -10px; right: 12px;
  background: var(--green); color: #fff; font-size: 11px; font-weight: 700;
  border-radius: 99px; padding: 3px 10px;
}
.strat h3 { font-size: 14px; }
.strat .desc { font-size: 12px; color: var(--ink-soft); margin-top: 2px; }
.strat .row {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-top: 10px; font-size: 13px; color: var(--ink-soft);
}
.strat .row b {
  font-size: 15px; color: var(--ink); font-variant-numeric: tabular-nums;
}
.strat .row b.red { color: var(--red); }

/* 갚는 순서 장부 */
.ledger { margin-top: 4px; }
.ledger .entry {
  display: flex; align-items: center; gap: 12px;
  padding: 13px 2px; border-bottom: 1px dashed var(--line);
}
.ledger .entry:last-child { border-bottom: none; }
.ledger .no {
  font-family: 'GmarketSans', sans-serif; font-size: 15px;
  color: var(--red); min-width: 24px; text-align: center;
}
.ledger .info { flex: 1; min-width: 0; }
.ledger .name { font-weight: 700; font-size: 15px; }
.ledger .meta { font-size: 12px; color: var(--ink-soft); margin-top: 1px; }
.ledger .when {
  text-align: right; font-size: 13px; font-weight: 700;
  color: var(--green); white-space: nowrap; font-variant-numeric: tabular-nums;
}
.ledger .when small { display: block; font-weight: 400; color: var(--ink-soft); font-size: 11px; }

.stamp {
  display: inline-block; border: 2px solid var(--green); color: var(--green);
  border-radius: 6px; font-size: 12px; font-weight: 800; padding: 1px 7px;
  transform: rotate(-4deg); margin-left: 6px;
}

.share {
  width: 100%; border: 1px solid var(--line); background: var(--card);
  border-radius: 12px; padding: 14px; font-size: 15px; font-weight: 600;
  color: var(--ink); cursor: pointer; margin-top: 14px; font-family: inherit;
}
.share:hover { background: #F1EFE9; }

/* ── content pages ── */
.doc { padding: 36px 0 20px; }
.doc h1 {
  font-family: 'GmarketSans', sans-serif; font-size: 24px; margin-bottom: 18px;
}
.doc h2 { font-size: 18px; margin: 28px 0 10px; }
.doc h3 { font-size: 15.5px; margin: 20px 0 8px; }
.doc p, .doc li { font-size: 15px; color: #33415C; margin-bottom: 10px; }
.doc ul, .doc ol { padding-left: 22px; margin-bottom: 12px; }
.doc table {
  width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14px;
}
.doc th, .doc td {
  border: 1px solid var(--line); padding: 9px 10px; text-align: left;
}
.doc th { background: #F1EFE9; font-size: 13px; }
.doc .cta {
  display: block; background: var(--ink); color: #fff; text-align: center;
  text-decoration: none; border-radius: 12px; padding: 15px;
  font-weight: 700; margin: 24px 0;
}

/* ── footer ── */
footer {
  border-top: 1px solid var(--line); margin-top: 48px;
  padding: 24px 0 40px; font-size: 12.5px; color: var(--ink-soft);
}
footer .links { margin-bottom: 10px; }
footer .links a { color: var(--ink-soft); text-decoration: none; margin-right: 14px; }
footer .links a:hover { color: var(--ink); }
footer .disc { line-height: 1.7; }

@media (max-width: 480px) {
  .cmp { grid-template-columns: 1fr; }
  .grid2 { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}