/* ════════════════════════════════════════════════
   HedgeStone Seller Finance Calculator
   Brand: dark editorial. Playfair (display) + DM Sans (body).
   Teal #00d4aa = primary affordance. Gold #c9a227 = the
   one number that closes the deal.
   ════════════════════════════════════════════════ */

:root {
  --bg: #060610;
  --bg-soft: #0a0a18;
  --bg-card: #0f0f1f;
  --bg-elevated: #14142a;
  --bg-input: #0a0a1c;
  --accent: #00d4aa;
  --accent-soft: rgba(0, 212, 170, 0.14);
  --gold: #c9a227;
  --gold-light: #e6c84c;
  --gold-soft: rgba(201, 162, 39, 0.14);
  --text: #eaeaf2;
  --text-secondary: #b3b3cf;
  --text-dim: #7c7c9c;
  --border: #1e1e3a;
  --border-light: #2a2a4a;
  --border-strong: #383860;
  --bad: #f87171;
  --good: #34d399;
  --shadow-card: 0 24px 64px -32px rgba(0, 0, 0, 0.7), 0 1px 0 rgba(255, 255, 255, 0.03) inset;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, -apple-system, Segoe UI, sans-serif;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  background:
    radial-gradient(1100px 600px at 80% -10%, rgba(0, 212, 170, 0.06), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(201, 162, 39, 0.05), transparent 60%),
    var(--bg);
  min-height: 100vh;
  font-variant-numeric: tabular-nums;
}

input, button, select, textarea { font: inherit; color: inherit; }

button { cursor: pointer; border: 0; background: transparent; }

a { color: inherit; }

em { font-style: italic; color: var(--gold-light); font-weight: 500; }

/* ─── Masthead ─────────────────────────────── */
.masthead {
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.4rem 1.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.masthead__brand {
  display: inline-flex;
  flex-direction: column;
  text-decoration: none;
  line-height: 1.1;
}
.masthead__brand-mark {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.masthead__brand-mark span { color: var(--gold); }
.masthead__brand-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  margin-top: 2px;
}
.masthead__pill {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: var(--bg-card);
}

/* ─── Page shell ───────────────────────────── */
.page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 1rem 1.6rem 5rem;
}

/* ─── Hero ─────────────────────────────────── */
.hero { padding: 2.4rem 0 2.8rem; max-width: 880px; }
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 1rem;
}
.hero__eyebrow::before {
  content: '';
  width: 24px; height: 1px; background: var(--accent);
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}
.hero__lede {
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  max-width: 700px;
}

/* ─── Panel chrome ─────────────────────────── */
.panel__title {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.3rem;
}
.panel__title--results { color: var(--text); }
.panel__sub { color: var(--text-dim); font-size: 0.92rem; margin-bottom: 1.6rem; }

/* ─── Calculator grid ──────────────────────── */
.calculator {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 1.6rem;
  align-items: start;
}
@media (max-width: 920px) { .calculator { grid-template-columns: 1fr; } }

.calculator__inputs,
.calculator__results {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
}
.calculator__results {
  background: linear-gradient(180deg, #11112a 0%, #0c0c1c 100%);
  position: sticky;
  top: 1.5rem;
}
@media (max-width: 920px) {
  .calculator__results { position: static; }
}

/* ─── Fields ───────────────────────────────── */
.field { margin-bottom: 1.25rem; }
.field:last-of-type { margin-bottom: 0.5rem; }
.field label,
.field__label-row label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.field__label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.field__label-row label { margin-bottom: 0; }

.field__input {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  transition: border-color 200ms var(--ease), box-shadow 200ms var(--ease), background 200ms var(--ease);
}
.field__input:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  background: #0c0c20;
}
.field__input input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: 0;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  min-width: 0;
}
.field__prefix, .field__suffix {
  color: var(--text-dim);
  font-size: 0.95rem;
  font-weight: 500;
  white-space: nowrap;
}
.field__hint {
  margin-top: 0.55rem;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ─── Toggle ($/%) ──────────────────────────── */
.toggle {
  display: inline-flex;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: 999px;
  padding: 3px;
}
.toggle__btn {
  padding: 0.32rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 999px;
  color: var(--text-dim);
  transition: color 150ms var(--ease), background 150ms var(--ease);
  min-width: 36px;
}
.toggle__btn.is-active {
  background: var(--accent);
  color: #001f18;
}

/* ─── Select ───────────────────────────────── */
select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%237c7c9c' d='M6 8 0 0h12z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.4rem;
  cursor: pointer;
}
select:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); outline: 0; }

/* ─── Checkbox ─────────────────────────────── */
.checkbox {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 0.75rem;
  align-items: start;
  padding: 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 200ms var(--ease);
}
.checkbox:hover { border-color: var(--border-strong); }
.checkbox input { width: 18px; height: 18px; accent-color: var(--accent); cursor: pointer; }
.checkbox > span:nth-of-type(1) { font-weight: 600; }
.checkbox__hint {
  grid-column: 2;
  font-size: 0.82rem;
  color: var(--text-dim);
  font-weight: 400;
}

/* ─── Stat cards ───────────────────────────── */
.stats {
  list-style: none;
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.6rem;
}
.stat {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.05rem 1.15rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.2rem;
}
.stat__label {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--text-dim);
  font-weight: 600;
}
.stat__value {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.1;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.stat__value--accent { color: var(--accent); }
.stat__value--gold { color: var(--gold-light); }
.stat__sub {
  font-size: 0.82rem;
  color: var(--text-dim);
}
.stat--feature {
  background:
    linear-gradient(135deg, rgba(201, 162, 39, 0.16) 0%, transparent 60%),
    var(--bg-elevated);
  border-color: rgba(201, 162, 39, 0.28);
}
.stat--feature .stat__value { font-size: 2.15rem; }

/* ─── Buttons ──────────────────────────────── */
.results-cta { display: grid; gap: 0.65rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.3rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.005em;
  text-decoration: none;
  transition: transform 200ms var(--ease), background 200ms var(--ease), border-color 200ms var(--ease);
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: #001f18;
  border: 1px solid transparent;
}
.btn--primary:hover { transform: translateY(-1px); background: #1ce5be; }
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn--lg { padding: 1.1rem 1.8rem; font-size: 1rem; }

.link-btn {
  background: transparent;
  border: 0;
  color: var(--text-dim);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
  text-underline-offset: 4px;
  padding: 0;
  margin-top: 1rem;
  transition: color 150ms var(--ease);
}
.link-btn:hover { color: var(--accent); text-decoration-color: var(--accent); }

/* ─── Amortization ─────────────────────────── */
.amort {
  margin-top: 2.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
}
.amort__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.3rem;
  flex-wrap: wrap;
}
.amort__head .panel__sub { margin-bottom: 0; }
.amort__table-wrap { overflow-x: auto; margin: 0 -2rem; padding: 0 2rem; }
.amort__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  min-width: 580px;
}
.amort__table th,
.amort__table td {
  padding: 0.7rem 0.9rem;
  text-align: right;
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.amort__table th:first-child,
.amort__table td:first-child { text-align: left; }
.amort__table thead th {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
  color: var(--text-dim);
  font-weight: 600;
  border-bottom: 1px solid var(--border-light);
}
.amort__table tbody tr { transition: background 100ms var(--ease); }
.amort__table tbody tr:hover { background: rgba(255, 255, 255, 0.015); }
.amort__table tfoot th,
.amort__table tfoot td {
  border-top: 1px solid var(--border-light);
  border-bottom: 0;
  font-weight: 700;
  color: var(--text);
  padding-top: 0.95rem;
}

/* ─── Tax panel ────────────────────────────── */
.tax-panel {
  margin-top: 2.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.tax-panel summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.5rem 2rem;
  cursor: pointer;
  user-select: none;
}
.tax-panel summary::-webkit-details-marker { display: none; }
.tax-panel__chip {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--gold);
  border: 1px solid var(--gold-soft);
  background: var(--gold-soft);
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
}
.tax-panel__headline {
  flex: 1;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text);
}
.tax-panel__chevron {
  width: 14px; height: 14px;
  border-right: 2px solid var(--text-dim);
  border-bottom: 2px solid var(--text-dim);
  transform: rotate(45deg);
  transition: transform 200ms var(--ease);
  flex-shrink: 0;
}
.tax-panel[open] .tax-panel__chevron { transform: rotate(-135deg); }
.tax-panel__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 2rem;
  padding: 0 2rem 2rem;
  border-top: 1px solid var(--border);
  padding-top: 1.8rem;
}
@media (max-width: 920px) { .tax-panel__grid { grid-template-columns: 1fr; } }

.tax-compare { display: grid; gap: 1rem; }
.tax-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem 1.4rem;
  background: var(--bg-elevated);
}
.tax-card--win {
  border-color: rgba(0, 212, 170, 0.3);
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.08) 0%, var(--bg-elevated) 60%);
}
.tax-card header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.85rem;
}
.tax-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.005em;
}
.tax-card__tag {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 0.3rem 0.55rem;
  border-radius: 4px;
  background: rgba(248, 113, 113, 0.12);
  color: var(--bad);
}
.tax-card__tag--win { background: var(--accent-soft); color: var(--accent); }
.tax-card dl { display: grid; gap: 0.5rem; }
.tax-card dl > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  font-size: 0.95rem;
}
.tax-card dt { color: var(--text-dim); }
.tax-card dd { font-weight: 600; font-variant-numeric: tabular-nums; }
.tax-card .row--strong {
  border-top: 1px solid var(--border);
  padding-top: 0.55rem;
  margin-top: 0.2rem;
}
.tax-card .row--strong dt { color: var(--text); font-weight: 600; }
.tax-card .row--strong dd { font-size: 1.1rem; }
.is-bad { color: var(--bad); }
.is-good { color: var(--good); }

.tax-summary {
  margin-top: 0.4rem;
  padding: 1.2rem 1.4rem;
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(201, 162, 39, 0.14) 0%, transparent 70%),
    var(--bg-elevated);
  border: 1px solid rgba(201, 162, 39, 0.25);
}
.tax-summary__num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1;
  display: block;
}
.tax-summary__label {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--text-dim);
  font-weight: 600;
}
.tax-summary__copy {
  margin-top: 0.85rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* ─── Mike pull-quote ──────────────────────── */
.mike-quote {
  margin-top: 2.2rem;
  padding: 2.4rem 2rem;
  border-left: 3px solid var(--gold);
  background: linear-gradient(90deg, var(--gold-soft) 0%, transparent 80%);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}
.mike-quote__attr {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 0.85rem;
}
.mike-quote blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  font-weight: 500;
  line-height: 1.32;
  color: var(--text);
  letter-spacing: -0.005em;
  margin-bottom: 0.9rem;
}
.mike-quote__copy { color: var(--text-secondary); font-size: 0.98rem; max-width: 720px; }

/* ─── CTA band ─────────────────────────────── */
.cta-band {
  margin-top: 2.2rem;
  padding: 3rem 2rem;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(800px 300px at 50% -20%, rgba(0, 212, 170, 0.12), transparent 60%),
    var(--bg-card);
}
.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.6rem;
}
.cta-band p { color: var(--text-secondary); margin: 0 auto 1.6rem; max-width: 580px; }

/* ─── Footnote ─────────────────────────────── */
.footnote {
  margin-top: 2.4rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-dim);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ─── Small screen polish ──────────────────── */
@media (max-width: 600px) {
  .masthead { padding: 1rem 1.1rem; flex-wrap: wrap; gap: 0.6rem; }
  .masthead__pill { font-size: 0.65rem; }
  .page { padding: 0.5rem 1.1rem 4rem; }
  .calculator__inputs, .calculator__results, .amort, .cta-band { padding: 1.5rem 1.25rem; }
  .tax-panel summary { padding: 1.2rem 1.25rem; flex-wrap: wrap; }
  .tax-panel__grid { padding: 1.5rem 1.25rem; gap: 1.4rem; }
  .stat__value { font-size: 1.55rem; }
  .stat--feature .stat__value { font-size: 1.85rem; }
  .mike-quote { padding: 1.8rem 1.3rem; }
  .amort__table-wrap { margin: 0 -1.25rem; padding: 0 1.25rem; }
}