*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root { --black: #0a0a0a; --off-black: #111111; --charcoal: #1c1c1c; --border: #2a2a2a; --gold: #c9a96e; --gold-light: #e8c98a; --white: #f5f2ee; --white-dim: #d4cfc8; --muted: #7a7672; --green: #4caf50; --red: #ef5350; --font-display: 'Cormorant Garamond', serif; --font-body: 'DM Sans', sans-serif; }
html { scroll-behavior: smooth; }
body { background: var(--black); color: var(--white); font-family: var(--font-body); font-weight: 300; line-height: 1.7; overflow-x: hidden; }
nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; display: flex; align-items: center; justify-content: space-between; padding: 1.5rem 4rem; background: rgba(10,10,10,0.92); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(201,169,110,0.12); }
.nav-logo { font-family: var(--font-display); font-size: 1.2rem; font-weight: 500; letter-spacing: 0.08em; color: var(--white); text-decoration: none; }
.nav-logo span { color: var(--gold); }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a { font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--white-dim); text-decoration: none; transition: color 0.3s; }
.nav-links a:hover, .nav-links a.active { color: var(--gold); }
.nav-cta { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gold); text-decoration: none; border: 1px solid var(--gold); padding: 0.6rem 1.4rem; transition: all 0.3s; }
.nav-cta:hover { background: var(--gold); color: var(--black); }
.breadcrumb { padding: 7rem 4rem 0; display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.breadcrumb a { font-size: 0.75rem; color: var(--muted); text-decoration: none; transition: color 0.3s; }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { font-size: 0.75rem; color: var(--border); }
.breadcrumb-current { font-size: 0.75rem; color: var(--gold); }
.calc-hero { padding: 3rem 4rem 4rem; border-bottom: 1px solid var(--border); }
.section-eyebrow { font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); margin-bottom: 1rem; display: flex; align-items: center; gap: 1rem; }
.section-eyebrow::before { content: ''; width: 30px; height: 1px; background: var(--gold); }
h1 { font-family: var(--font-display); font-size: clamp(2rem, 3.5vw, 3.2rem); font-weight: 300; line-height: 1.1; color: var(--white); margin-bottom: 1.2rem; }
h1 em { font-style: italic; color: var(--gold); }
.hero-lead { font-size: 1rem; color: var(--white-dim); line-height: 1.7; max-width: 720px; }
.calc-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; padding: 4rem; max-width: 1400px; margin: 0 auto; align-items: start; }
.calc-form { background: var(--off-black); border: 1px solid var(--border); padding: 2.5rem; position: sticky; top: 6rem; }
.calc-form h2 { font-family: var(--font-display); font-size: 1.5rem; font-weight: 400; color: var(--white); margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
.field { margin-bottom: 1.2rem; }
.field label { display: block; font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gold); margin-bottom: 0.4rem; font-weight: 500; }
.field-hint { font-size: 0.72rem; color: var(--muted); margin-top: 0.3rem; }
.field input, .field select { width: 100%; background: var(--black); color: var(--white); border: 1px solid var(--border); padding: 0.8rem 1rem; font-family: var(--font-body); font-size: 0.95rem; font-weight: 300; transition: border-color 0.3s; }
.field input:focus, .field select:focus { outline: none; border-color: var(--gold); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.input-group { position: relative; }
.input-suffix { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 0.85rem; pointer-events: none; }
.input-group input { padding-right: 50px; }
.calc-btn { width: 100%; background: var(--gold); color: var(--black); border: none; padding: 1rem; font-family: var(--font-body); font-size: 0.85rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; cursor: pointer; transition: all 0.3s; margin-top: 0.5rem; }
.calc-btn:hover { background: var(--gold-light); }
.calc-result { display: flex; flex-direction: column; gap: 1.5rem; }
.result-card { background: var(--charcoal); border: 1px solid rgba(201,169,110,0.2); padding: 2rem; }
.result-card.big { border-left: 3px solid var(--gold); }
.result-label { font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.5rem; }
.result-value { font-family: var(--font-display); font-size: 2.2rem; color: var(--gold); line-height: 1; margin-bottom: 0.4rem; font-weight: 400; }
.result-value.big { font-size: 3rem; color: var(--white); }
.result-value.green { color: var(--green); }
.result-value.red { color: var(--red); }
.result-desc { font-size: 0.85rem; color: var(--white-dim); line-height: 1.6; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.result-cell { background: var(--off-black); border: 1px solid var(--border); padding: 1.2rem 1.5rem; }
.result-cell-label { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.3rem; }
.result-cell-value { font-family: var(--font-display); font-size: 1.4rem; color: var(--white); font-weight: 400; }
.result-cell-value.gold { color: var(--gold); }
.result-empty { background: var(--off-black); border: 1px dashed var(--border); padding: 4rem 2rem; text-align: center; color: var(--muted); font-size: 0.95rem; }
.result-empty-icon { font-size: 2rem; color: var(--border); margin-bottom: 1rem; }
.methodology { background: var(--off-black); border: 1px solid var(--border); padding: 2rem; margin-top: 2rem; }
.methodology h3 { font-family: var(--font-display); font-size: 1.2rem; color: var(--white); margin-bottom: 0.8rem; font-weight: 400; }
.methodology p, .methodology li { font-size: 0.85rem; color: var(--muted); line-height: 1.7; margin-bottom: 0.5rem; }
.methodology ul { padding-left: 1.2rem; }
.calc-cta { background: var(--charcoal); border: 1px solid rgba(201,169,110,0.3); padding: 2rem; text-align: center; }
.calc-cta-title { font-family: var(--font-display); font-size: 1.3rem; color: var(--white); margin-bottom: 0.6rem; font-weight: 400; }
.calc-cta-title em { color: var(--gold); font-style: italic; }
.calc-cta-desc { font-size: 0.85rem; color: var(--muted); margin-bottom: 1.2rem; }
.btn-primary { display: inline-flex; align-items: center; gap: 0.6rem; background: var(--gold); color: var(--black); font-family: var(--font-body); font-size: 0.8rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; text-decoration: none; padding: 1rem 2rem; transition: all 0.3s; margin: 0 0.3rem 0.5rem; }
.btn-primary:hover { background: var(--gold-light); }
.btn-secondary { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--white-dim); font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; text-decoration: none; padding: 1rem 2rem; border: 1px solid var(--border); transition: all 0.3s; margin: 0 0.3rem 0.5rem; }
.btn-secondary:hover { border-color: var(--gold); color: var(--gold); }
.other-calcs { padding: 4rem; border-top: 1px solid var(--border); background: var(--off-black); }
.other-calcs h2 { font-family: var(--font-display); font-size: 1.6rem; font-weight: 300; color: var(--white); margin-bottom: 2rem; text-align: center; }
.other-calcs h2 em { color: var(--gold); font-style: italic; }
.calc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); max-width: 1200px; margin: 0 auto; }
.calc-card { background: var(--off-black); padding: 2rem 1.5rem; text-decoration: none; transition: background 0.3s; }
.calc-card:hover { background: var(--charcoal); }
.calc-card-icon { font-size: 1.5rem; color: var(--gold); margin-bottom: 0.8rem; }
.calc-card-title { font-family: var(--font-display); font-size: 1.1rem; color: var(--white); margin-bottom: 0.5rem; font-weight: 400; }
.calc-card-desc { font-size: 0.78rem; color: var(--muted); line-height: 1.5; }
footer { padding: 3rem 4rem; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1.5rem; }
.footer-logo { font-family: var(--font-display); font-size: 1rem; font-weight: 500; color: var(--muted); }
.footer-logo span { color: var(--gold); }
.footer-copy { font-size: 0.72rem; color: var(--muted); }
.footer-links { display: flex; gap: 2rem; list-style: none; flex-wrap: wrap; }
.footer-links a { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); text-decoration: none; transition: color 0.3s; }
.footer-links a:hover { color: var(--gold); }
@media (max-width: 900px) {
  nav { padding: 1.2rem 1.5rem; } .nav-links { display: none; }
  .breadcrumb { padding: 6rem 1.5rem 0; }
  .calc-hero { padding: 2rem 1.5rem 3rem; }
  .calc-wrap { grid-template-columns: 1fr; padding: 2.5rem 1.5rem; gap: 2rem; }
  .calc-form { position: static; }
  .result-grid { grid-template-columns: 1fr; }
  .other-calcs { padding: 3rem 1.5rem; }
  footer { flex-direction: column; gap: 1.5rem; text-align: center; padding: 2rem 1.5rem; }
}