/* lefinance.xyz — Loan Amortization Calculator
   Visual identity: charcoal + lime + bone, heavy condensed sans,
   mixed corners, newspaper-grid layout, industrial feel. */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px; line-height: 1.6;
  color: #1c1f24; background: #f5f3eb;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: #1c1f24; text-decoration: underline; text-decoration-color: #bfff3a; text-decoration-thickness: 2px; text-underline-offset: 3px; }
a:hover { color: #5a8a00; text-decoration-color: #1c1f24; }

h1, h2, h3, h4 {
  font-family: -apple-system, "Helvetica Neue Condensed Black", "Arial Narrow", sans-serif;
  font-weight: 900;
  letter-spacing: -.02em;
  color: #0d0f12;
  line-height: 1.1; margin: 0 0 .55em;
  text-transform: uppercase;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-top: 1.6em; }
h3 { font-size: 1.1rem; font-weight: 800; letter-spacing: -.01em; text-transform: none; }
h4 { font-size: .9rem; font-weight: 800; letter-spacing: .04em; }
p { margin: 0 0 1em; }

code, kbd, samp, .mono {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: .92em; background: #1c1f24; color: #bfff3a; padding: .12em .4em; border-radius: 0;
}

:root {
  --charcoal: #1c1f24;
  --charcoal-soft: #2a2e35;
  --lime: #bfff3a;
  --lime-dim: #98cc1f;
  --bone: #f5f3eb;
  --paper: #ebe7d8;
  --line: #d3cdba;
  --text: #1c1f24;
  --muted: #6b6b66;
  --hi: #0d0f12;
}

.container { width: min(1140px, 92%); margin: 0 auto; }

/* ---- Header ---- */
.site-header {
  background: var(--charcoal); color: var(--bone);
  border-bottom: 4px solid var(--lime);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: .85rem 0;
}
.brand { display: inline-flex; align-items: center; gap: .65rem; line-height: 1.05; }
.brand-mark {
  width: 40px; height: 40px;
  background: var(--bone); color: var(--charcoal);
  clip-path: polygon(0 0, 100% 0, 100% 75%, 75% 100%, 0 100%);
  display: grid; place-items: center;
  font-family: -apple-system, sans-serif; font-weight: 900; font-size: .9rem; letter-spacing: -.5px;
  flex-shrink: 0; padding-bottom: 4px;
}
.brand-text { display: inline-flex; flex-direction: column; gap: 1px; }
.brand-name {
  color: var(--bone); font-family: -apple-system, sans-serif; font-weight: 900;
  font-size: 1rem; text-transform: uppercase; letter-spacing: -.01em;
}
.brand-tagline {
  font-size: .7rem; font-weight: 700; color: var(--lime);
  text-transform: uppercase; letter-spacing: .1em;
}
@media (max-width: 720px) { .brand-tagline { display: none; } }

.nav { display: flex; flex-wrap: wrap; gap: .25rem 1rem; align-items: center; row-gap: .25rem; }
.nav a {
  font-family: -apple-system, sans-serif; font-weight: 700; color: var(--bone);
  font-size: .82rem; text-decoration: none;
  padding: .35rem .55rem; white-space: nowrap;
  text-transform: uppercase; letter-spacing: .05em;
  border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--lime); border-bottom-color: var(--lime); }
.nav-toggle {
  display: none; background: transparent; border: 0; padding: .4rem; cursor: pointer;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--lime);
  margin: 5px 0;
}

/* ---- Hero (newspaper grid) ---- */
.hero {
  padding: 3.5rem 0 2.5rem;
  background: var(--bone);
  border-bottom: 1px solid var(--charcoal);
}
.hero-grid {
  display: grid; grid-template-columns: 2fr 1fr; gap: 2rem;
  align-items: stretch;
}
.eyebrow {
  display: inline-block;
  font-size: .75rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--charcoal); font-weight: 800;
  background: var(--lime); padding: .25rem .7rem;
  margin-bottom: 1rem;
}
.lead { font-size: 1.1rem; color: var(--muted); }
.hero-stat {
  background: var(--charcoal); color: var(--bone);
  padding: 1.5rem 1.5rem 1.5rem 1.5rem;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 12% 100%, 0 88%);
}
.hero-stat h3 {
  margin: 0 0 1rem; color: var(--lime);
  font-size: .8rem; text-transform: uppercase; letter-spacing: .12em;
  font-family: -apple-system, sans-serif; font-weight: 800;
}
.hero-stat .row { display: flex; justify-content: space-between; padding: .5rem 0; border-bottom: 1px dashed rgba(245,243,235,.18); font-family: "JetBrains Mono", Consolas, monospace; font-size: .9rem; }
.hero-stat .row:last-child { border-bottom: none; }
.hero-stat .row .k { color: rgba(245,243,235,.6); }
.hero-stat .row .v { color: var(--lime); font-weight: 700; }

/* ---- Tool ---- */
.tool {
  background: var(--bone);
  border: 2px solid var(--charcoal);
  padding: 1.6rem;
  margin: 2.5rem 0;
  box-shadow: 8px 8px 0 var(--lime);
}
.tool h2 { margin-top: 0; }
.tool-grid {
  display: grid; gap: 1.2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.field { display: flex; flex-direction: column; gap: .35rem; }
.field label {
  font-size: .8rem; font-weight: 800; color: var(--charcoal);
  text-transform: uppercase; letter-spacing: .06em;
}
.field input, .field select {
  font: inherit; padding: .7rem .9rem;
  border: 2px solid var(--charcoal); border-radius: 0;
  background: var(--bone);
  font-weight: 600;
}
.field input:focus, .field select:focus {
  outline: none; background: #fff;
  box-shadow: 4px 4px 0 var(--lime);
}
.field small { color: var(--muted); font-size: .8rem; }

.tool-output {
  margin-top: 1.6rem;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 0;
  border: 2px solid var(--charcoal);
  background: var(--charcoal); color: var(--bone);
}
.tool-output > div {
  padding: 1.2rem 1.4rem;
  border-right: 1px solid rgba(245,243,235,.15);
}
.tool-output > div:last-child { border-right: none; }
.tool-output h3 {
  margin: 0 0 .4rem; color: var(--lime);
  font-size: .7rem; text-transform: uppercase; letter-spacing: .12em;
  font-family: -apple-system, sans-serif; font-weight: 800;
}
.tool-output .big {
  font-size: 1.9rem; font-weight: 900;
  color: var(--bone); letter-spacing: -.02em; line-height: 1;
}
.tool-output .small { color: rgba(245,243,235,.6); font-size: .8rem; margin-top: .3rem; }

.savings-flag {
  margin-top: 1rem; padding: .8rem 1rem;
  border: 2px solid var(--lime); background: #f1ffd0;
  font-size: .92rem; font-weight: 600;
  color: var(--charcoal);
}

.privacy-note {
  font-size: .85rem; color: var(--muted);
  border-left: 4px solid var(--lime);
  padding: .55rem .9rem; margin-top: 1rem; background: var(--paper);
}

/* ---- Content ---- */
.content { padding: 1.5rem 0 3rem; }
.content section { margin-bottom: 2.2rem; }

.author-card {
  display: grid; grid-template-columns: 90px 1fr; gap: 1.4rem;
  align-items: center; padding: 1.4rem;
  background: var(--paper); border: 2px solid var(--charcoal);
  margin: 1.2rem 0;
  position: relative;
}
.author-card::after {
  content: ""; position: absolute; top: -2px; right: -2px; width: 30px; height: 30px;
  background: var(--lime); clip-path: polygon(0 0, 100% 0, 100% 100%);
}
.author-avatar {
  width: 90px; height: 90px;
  background: var(--charcoal); color: var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% 75%, 75% 100%, 0 100%);
  font-family: -apple-system, sans-serif;
  font-size: 1.9rem; font-weight: 900;
  display: grid; place-items: center;
  letter-spacing: -1px; padding-bottom: 8px;
}
.author-meta { color: var(--muted); font-size: .92rem; margin: 0 0 .4rem; font-weight: 600; }
.cred-row { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .5rem; }
.cred-row span {
  display: inline-block; padding: .2rem .65rem;
  background: var(--charcoal); color: var(--bone);
  font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .04em;
}

/* Reference / data tables */
.ref-table-wrap { overflow-x: auto; border: 2px solid var(--charcoal); background: var(--bone); }
.ref-table { width: 100%; border-collapse: collapse; font-size: .92rem; min-width: 480px; }
.ref-table th, .ref-table td {
  padding: .65rem .85rem; text-align: left;
  border-bottom: 1px solid var(--line);
}
.ref-table thead th {
  background: var(--charcoal); color: var(--lime);
  font-weight: 800; text-transform: uppercase; font-size: .78rem; letter-spacing: .07em;
}
.ref-table tbody tr:hover td { background: var(--paper); }
.ref-table td.num { font-family: "JetBrains Mono", Consolas, monospace; }

.callout {
  border-left: 6px solid var(--lime);
  background: var(--charcoal); color: var(--bone);
  padding: 1rem 1.2rem;
  margin: 1.2rem 0; font-size: .95rem;
}
.callout strong { color: var(--lime); }
.callout a { color: var(--lime); }

/* Forms */
.form-card {
  background: var(--bone); border: 2px solid var(--charcoal);
  padding: 1.8rem;
  margin: 1rem 0 2rem;
  box-shadow: 6px 6px 0 var(--lime);
}
.form-card label { display: grid; gap: .35rem; margin-bottom: 1rem; font-size: .8rem; font-weight: 800; color: var(--charcoal); text-transform: uppercase; letter-spacing: .05em; }
.form-card input, .form-card textarea, .form-card select {
  font: inherit; padding: .65rem .9rem;
  border: 2px solid var(--charcoal); background: var(--bone);
  font-weight: 600;
}
.form-card input:focus, .form-card textarea:focus, .form-card select:focus {
  outline: none; background: #fff;
  box-shadow: 4px 4px 0 var(--lime);
}
.btn {
  display: inline-block; padding: .7rem 1.6rem;
  font: inherit; font-weight: 900; font-size: .85rem;
  cursor: pointer; text-transform: uppercase; letter-spacing: .08em;
  border: 2px solid var(--charcoal);
  background: var(--lime); color: var(--charcoal);
}
.btn:hover { background: var(--charcoal); color: var(--lime); }

/* Footer */
.site-footer {
  background: var(--charcoal); color: rgba(245,243,235,.7);
  padding: 2.6rem 0 1.4rem;
  border-top: 4px solid var(--lime);
}
.site-footer a { color: var(--lime); text-decoration-color: transparent; }
.site-footer a:hover { color: var(--bone); text-decoration-color: var(--lime); }
.site-footer .brand-mark { background: var(--lime); color: var(--charcoal); }
.site-footer .brand-name { color: var(--bone); }
.site-footer .brand-tagline { color: var(--lime); }
.footer-grid {
  display: grid; gap: 1.6rem;
  grid-template-columns: 2fr 1fr 1fr;
  margin-bottom: 1.4rem;
}
.site-footer h4 {
  color: var(--lime); font-family: -apple-system, sans-serif; font-size: .85rem;
  margin-bottom: .8rem; text-transform: uppercase; letter-spacing: .08em;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: .35rem 0; font-size: .9rem; }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: .8rem;
  padding-top: 1.2rem; border-top: 1px solid rgba(191,255,58,.2);
  font-size: .82rem;
}

/* Responsive */
@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-stat { clip-path: none; }
  .tool-output { grid-template-columns: 1fr; }
  .tool-output > div { border-right: none; border-bottom: 1px solid rgba(245,243,235,.15); }
  .tool-output > div:last-child { border-bottom: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .author-card { grid-template-columns: 1fr; }
  .author-card::after { display: none; }

  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 100%; right: 4%; left: 4%; z-index: 50;
    background: var(--charcoal); border: 2px solid var(--lime);
    flex-direction: column; align-items: stretch; gap: 0;
    padding: .5rem; display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: .65rem .8rem; }
}