@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --paper:#EDF1E6;
  --paper-line:#C7D3BC;
  --card:#FBFAF6;
  --ink:#1E2A18;
  --ink-soft:#5B6B51;
  --brass:#A8792E;
  --brass-dark:#8A5F1F;
  --alert:#A6503A;
  --good:#3E6B4F;
  --shadow: 0 1px 0 rgba(30,42,24,0.06);
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:
    repeating-linear-gradient(to bottom, transparent 0px, transparent 31px, var(--paper-line) 32px),
    var(--paper);
  color:var(--ink);
  font-family:'IBM Plex Sans', sans-serif;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
::selection{ background:var(--brass); color:var(--card); }
h1,h2,h3{ font-family:'Fraunces', serif; font-weight:600; margin:0; }
a{ color:var(--brass-dark); }
.wrap{ max-width:920px; margin:0 auto; padding:0 24px; }

/* ---------- Site header / nav ---------- */
.site-header{ padding:26px 0 22px; border-bottom:2px solid var(--ink); }
.site-header .top{ display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:14px; }
.brand{ display:flex; align-items:baseline; gap:12px; text-decoration:none; color:var(--ink); }
.brand .mark{
  font-family:'Fraunces', serif; font-weight:700; font-size:1.3rem;
  border:1.5px solid var(--ink); border-radius:3px; padding:1px 8px;
}
.brand .tag{ font-family:'IBM Plex Mono', monospace; font-size:0.7rem; color:var(--ink-soft); letter-spacing:0.1em; text-transform:uppercase; }
nav.sitenav{ display:flex; gap:6px; flex-wrap:wrap; }
nav.sitenav a{
  font-family:'IBM Plex Mono', monospace; font-size:0.78rem; text-decoration:none;
  color:var(--ink-soft); padding:8px 12px; border:1.5px solid transparent; border-radius:4px;
}
nav.sitenav a:hover{ color:var(--ink); }
nav.sitenav a.current{ color:var(--ink); border-color:var(--paper-line); background:var(--card); }

/* ---------- Page hero ---------- */
.page-hero{ padding:40px 0 8px; }
.eyebrow{ font-family:'IBM Plex Mono', monospace; font-size:0.74rem; color:var(--brass-dark); letter-spacing:0.1em; text-transform:uppercase; margin-bottom:10px; }
.page-hero h1{ font-size:clamp(1.7rem, 4vw, 2.4rem); line-height:1.15; max-width:680px; }
.page-hero .lede{ color:var(--ink-soft); max-width:620px; margin-top:14px; font-size:1rem; }

/* ---------- Article text ---------- */
article.copy{ max-width:680px; padding:8px 0 30px; }
article.copy h2{ font-size:1.25rem; margin-top:36px; margin-bottom:10px; }
article.copy p{ margin:0 0 14px; color:var(--ink); }
article.copy p.muted{ color:var(--ink-soft); font-size:0.9rem; }
.faq dt{ font-family:'Fraunces', serif; font-weight:600; margin-top:18px; font-size:1rem; }
.faq dd{ margin:6px 0 0; color:var(--ink-soft); }

/* ---------- Calculator layout ---------- */
main.calc{ padding:26px 0 60px; }
.grid{ display:grid; grid-template-columns: 1fr 1fr; gap:28px; }
@media (max-width:720px){ .grid{ grid-template-columns:1fr; } }

.card{ background:var(--card); border:1px solid var(--paper-line); border-radius:6px; padding:26px 26px 22px; box-shadow:var(--shadow); }
.card h2{ font-size:1.15rem; margin-bottom:4px; }
.card .sub{ color:var(--ink-soft); font-size:0.85rem; margin-bottom:18px; }

label{ display:block; font-size:0.78rem; color:var(--ink-soft); margin:14px 0 5px; font-family:'IBM Plex Mono', monospace; letter-spacing:0.02em; }
label:first-of-type{ margin-top:0; }
.row-inline{ display:flex; gap:10px; }
.row-inline > div{ flex:1; }

input[type=number], select{
  width:100%; padding:10px 12px; font-size:0.95rem;
  font-family:'IBM Plex Mono', monospace; font-variant-numeric:tabular-nums;
  background:var(--paper); border:1.5px solid var(--paper-line); border-radius:4px;
  color:var(--ink); outline:none; transition:border-color .15s;
}
input[type=number]:focus, select:focus{ border-color:var(--brass); }

.toggle{ display:inline-flex; border:1.5px solid var(--paper-line); border-radius:4px; overflow:hidden; }
.toggle button{ font-family:'IBM Plex Mono', monospace; font-size:0.76rem; padding:8px 12px; background:var(--paper); border:none; cursor:pointer; color:var(--ink-soft); }
.toggle button.on{ background:var(--brass); color:var(--card); }

.btn-primary{
  margin-top:20px; width:100%; padding:12px; border:none; border-radius:4px;
  background:var(--brass); color:var(--card); font-family:'IBM Plex Mono', monospace;
  font-size:0.85rem; letter-spacing:0.04em; cursor:pointer; transition:background .15s;
}
.btn-primary:hover{ background:var(--brass-dark); }

.ledger{ background:var(--card); border:1px solid var(--paper-line); border-radius:6px; padding:24px 26px; box-shadow:var(--shadow); }
.ledger h2{ font-size:1.15rem; margin-bottom:16px; }
.ledger-row{ display:flex; align-items:baseline; gap:8px; padding:8px 0; border-bottom:1px dotted var(--paper-line); font-size:0.92rem; }
.ledger-row .label{ color:var(--ink-soft); white-space:nowrap; }
.ledger-row .fill{ flex:1; border-bottom:1px dotted var(--paper-line); transform:translateY(-4px); opacity:0; }
.ledger-row .val{ font-family:'IBM Plex Mono', monospace; font-variant-numeric:tabular-nums; font-weight:600; white-space:nowrap; }
.ledger-row.total .val{ color:var(--good); font-size:1.05rem; }
.ledger-row.cost .val{ color:var(--alert); }

canvas#growthChart{ width:100%; height:200px; margin-top:18px; display:block; }

table.mini{ width:100%; border-collapse:collapse; margin-top:14px; font-size:0.82rem; }
.table-wrap{ overflow-x:auto; -webkit-overflow-scrolling:touch; }
@media (max-width:480px){ table.mini{ font-size:0.74rem; } }
table.mini th{ text-align:right; font-family:'IBM Plex Mono', monospace; font-weight:500; color:var(--ink-soft); font-size:0.72rem; padding:6px 4px; border-bottom:1.5px solid var(--ink); }
table.mini th:first-child, table.mini td:first-child{ text-align:left; }
table.mini td{ text-align:right; padding:6px 4px; font-family:'IBM Plex Mono', monospace; font-variant-numeric:tabular-nums; border-bottom:1px solid var(--paper-line); }
table.mini tr.gap td{ border-bottom:none; padding:2px 0; color:var(--ink-soft); text-align:center; }

.hint{ font-size:0.78rem; color:var(--ink-soft); margin-top:14px; line-height:1.5; }
.hint strong{ color:var(--ink); }
.status{ font-size:0.82rem; color:var(--ink-soft); margin-top:10px; font-family:'IBM Plex Mono', monospace; }
.status.err{ color:var(--alert); }

/* ---------- Home page tool cards ---------- */
.tool-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin:34px 0 10px; }
@media (max-width:820px){ .tool-grid{ grid-template-columns:1fr; } }
.tool-card{
  display:block; text-decoration:none; color:var(--ink);
  background:var(--card); border:1px solid var(--paper-line); border-radius:6px;
  padding:22px; box-shadow:var(--shadow); transition:transform .15s, border-color .15s;
}
.tool-card:hover{ border-color:var(--brass); transform:translateY(-2px); }
.tool-card .num{ font-family:'IBM Plex Mono', monospace; font-size:0.72rem; color:var(--brass-dark); letter-spacing:0.1em; }
.tool-card h3{ font-size:1.05rem; margin:8px 0 8px; }
.tool-card p{ font-size:0.86rem; color:var(--ink-soft); margin:0; }

footer{
  border-top:2px solid var(--ink); padding:22px 0 40px; margin-top:20px;
  font-family:'IBM Plex Mono', monospace; font-size:0.74rem; color:var(--ink-soft);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px;
}
footer.sitefoot{ flex-direction:column; gap:14px; }
footer.sitefoot .footer-links{ display:flex; gap:18px; flex-wrap:wrap; }
footer.sitefoot .footer-links a{ color:var(--ink-soft); text-decoration:none; }
footer.sitefoot .footer-links a:hover{ color:var(--brass-dark); text-decoration:underline; }
footer.sitefoot .footer-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px; width:100%; }

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