/* ============================================================
   PRIMED INVESTOR — design tokens
   Ledger & banknote aesthetic: bottle green, brass, ledger paper
   Display: Marcellus | Body: Public Sans | Numerals: IBM Plex Mono
   ============================================================ */
:root {
  --paper: #f1efe7;
  --paper-deep: #e7e4d8;
  --ink: #10201a;
  --ink-soft: #3c4a44;
  --green: #1c4636;
  --green-deep: #0d2a20;
  --brass: #a5801f;
  --brass-bright: #d4a937;
  --line: rgba(16, 32, 26, 0.16);
  --line-strong: rgba(16, 32, 26, 0.35);
  --danger: #8c2f22;
  --radius: 6px;
  --font-display: "Marcellus", serif;
  --font-body: "Public Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
}

/* ---------- Header / nav ---------- */
.site-header {
  border-bottom: 1px solid var(--line-strong);
  background: var(--paper);
}
.nav {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.wordmark {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
.wordmark .tick {
  width: 22px; height: 22px;
  border: 1.5px solid var(--brass);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--brass);
}
.nav-links { display: flex; gap: 22px; flex-wrap: wrap; }
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--green); border-bottom-color: var(--brass); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--green-deep);
  color: var(--paper);
}
.hero-inner {
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
  padding: 88px 24px 96px;
  z-index: 1;
}
.hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brass-bright);
  margin-bottom: 18px;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.12;
  max-width: 17ch;
  margin-bottom: 20px;
}
.hero p.lede {
  max-width: 54ch;
  color: rgba(241, 239, 231, 0.82);
  font-size: 1.05rem;
  margin-bottom: 32px;
}
.guilloche {
  position: absolute;
  right: -140px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.35;
  pointer-events: none;
}
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 13px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--brass-bright);
  color: var(--green-deep);
  background: var(--brass-bright);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn:hover, .btn:focus-visible { background: transparent; color: var(--brass-bright); }
.btn.ghost { background: transparent; color: var(--brass-bright); margin-left: 12px; }
.btn.ghost:hover, .btn.ghost:focus-visible { background: var(--brass-bright); color: var(--green-deep); }

/* ---------- Sections ---------- */
.section { max-width: 1080px; margin: 0 auto; padding: 64px 24px; }
.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.7rem;
  margin-bottom: 8px;
}
.section-sub { color: var(--ink-soft); max-width: 60ch; margin-bottom: 36px; }

/* ---------- Tool cards ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.tool-card {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #fbfaf5;
  padding: 26px 24px 24px;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.tool-card:hover, .tool-card:focus-visible { border-color: var(--brass); transform: translateY(-2px); }
.tool-card .kicker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brass);
}
.tool-card h3 { font-family: var(--font-display); font-weight: 400; font-size: 1.25rem; }
.tool-card p { color: var(--ink-soft); font-size: 0.92rem; flex-grow: 1; }
.tool-card .go { font-size: 0.85rem; color: var(--green); letter-spacing: 0.04em; }

/* ---------- Calculator layout ---------- */
.calc-wrap {
  display: grid;
  grid-template-columns: minmax(300px, 420px) 1fr;
  gap: 28px;
  align-items: start;
}
@media (max-width: 820px) { .calc-wrap { grid-template-columns: 1fr; } }

.calc-inputs {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #fbfaf5;
  padding: 26px 24px;
}
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.field input, .field select {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 1rem;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
}
.field .hint { font-size: 0.75rem; color: var(--ink-soft); margin-top: 4px; }

/* Ledger result panel — the signature element */
.ledger {
  background: var(--green-deep);
  color: var(--paper);
  border-radius: var(--radius);
  padding: 30px 28px;
  border: 1px solid var(--green);
  position: relative;
}
.ledger::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(212, 169, 55, 0.35);
  border-radius: 4px;
  pointer-events: none;
}
.ledger .ledger-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brass-bright);
  margin-bottom: 6px;
}
.ledger .headline-figure {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 4.5vw, 2.8rem);
  color: #fff;
  letter-spacing: 0.01em;
  margin-bottom: 22px;
  border-bottom: 2px solid var(--brass);
  display: inline-block;
  padding-bottom: 6px;
}
.ledger-rows { display: grid; gap: 0; }
.ledger-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(241, 239, 231, 0.25);
  font-size: 0.92rem;
}
.ledger-row:last-child { border-bottom: none; }
.ledger-row .k { color: rgba(241, 239, 231, 0.75); }
.ledger-row .v { font-family: var(--font-mono); color: #fff; }
.ledger-row .v.brass { color: var(--brass-bright); }
.ledger-row .v.danger { color: #e8a196; }
.ledger .warn {
  margin-top: 16px;
  font-size: 0.85rem;
  color: #e8a196;
}

.chart-box { margin-top: 24px; }
.chart-box canvas { width: 100%; height: auto; display: block; }

/* ---------- Article / SEO copy ---------- */
.article { max-width: 760px; }
.article h2 { font-family: var(--font-display); font-weight: 400; font-size: 1.5rem; margin: 40px 0 12px; }
.article h3 { font-family: var(--font-display); font-weight: 400; font-size: 1.15rem; margin: 26px 0 8px; }
.article p { margin-bottom: 14px; color: var(--ink-soft); }
.article strong { color: var(--ink); }
.article .formula {
  font-family: var(--font-mono);
  background: var(--paper-deep);
  border-left: 3px solid var(--brass);
  padding: 14px 18px;
  margin: 18px 0;
  font-size: 0.95rem;
  overflow-x: auto;
}

/* ---------- FAQ ---------- */
.faq details {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.98rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.faq summary::after { content: "+"; color: var(--brass); font-family: var(--font-mono); }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin-top: 10px; color: var(--ink-soft); font-size: 0.93rem; }

/* ---------- Ad slots ---------- */
.ad-slot {
  max-width: 1080px;
  margin: 8px auto;
  padding: 0 24px;
}
.ad-slot .ad-inner {
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: var(--paper-deep);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line-strong);
  margin-top: 48px;
  background: var(--paper-deep);
}
.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 36px 24px;
  font-size: 0.82rem;
  color: var(--ink-soft);
}
.footer-inner .disclaimer { max-width: 76ch; margin-bottom: 14px; }
.footer-inner nav { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 14px; }
.footer-inner nav a { color: var(--green); text-decoration: none; }
.footer-inner nav a:hover { text-decoration: underline; }