:root {
  --paper: var(--bg);
  --surface: rgba(255, 255, 255, 0.82);
  --ink: var(--text);
  --muted: var(--text-soft);
  --line: rgba(30, 36, 48, 0.12);
  --green: var(--accent-deep);
  --green-dark: #7f6637;
  --blue: var(--accent-cool);
  --red: #9f3b36;
  --amber: #9b742e;
  --shadow: var(--shadow-soft);
}

body.calc-page {
  background:
    radial-gradient(circle at 8% 14%, rgba(194, 166, 110, 0.13), transparent 38%),
    radial-gradient(circle at 90% 8%, rgba(76, 125, 134, 0.1), transparent 32%),
    var(--bg);
  font-family: 'Manrope', sans-serif;
}

body.calc-page::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(30, 36, 48, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 36, 48, 0.025) 1px, transparent 1px);
  background-size: 32px 32px;
}

.calc-page .topbar {
  position: relative;
  margin-top: 104px;
  padding: 54px 0 28px;
}

.calc-page .topbar::before {
  content: '';
  position: absolute;
  inset: 20px -18px 8px;
  z-index: -1;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(194, 166, 110, 0.22);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.34)),
    linear-gradient(90deg, rgba(194, 166, 110, 0.12), transparent 42%);
  box-shadow: var(--shadow-soft);
}

.calc-page .topbar h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.4rem, 5.2vw, 4.7rem);
  font-weight: 700;
  line-height: 0.98;
}

.calc-page .eyebrow {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-deep);
  letter-spacing: 0.16em;
}

.calc-page .topbar__note,
.calc-page .summary-item,
.calc-page .locked-row {
  border-color: rgba(194, 166, 110, 0.26);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 12px 26px rgba(30, 36, 48, 0.08);
}

.calc-page .topbar__note {
  min-width: 240px;
}

.calc-page .topbar__note strong {
  color: var(--text);
  font-size: 1.25rem;
}

.calc-page .topbar__link {
  color: var(--accent-deep);
}

.calc-page .topbar__link--muted {
  color: var(--text-soft);
}

.calc-page .topbar__button {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 14px;
  border-radius: 999px;
  padding: 0.86rem 1rem;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent));
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
  box-shadow: 0 16px 30px rgba(169, 138, 75, 0.3);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.calc-page .topbar__button:hover,
.calc-page .topbar__button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 20px 36px rgba(169, 138, 75, 0.38);
}

.calc-page .method-band,
.calc-page .base-grid,
.calc-page .simple-grid,
.calc-page .scenario,
.calc-page .results,
.calc-page .calc-disclaimer,
.calc-page .rules-overview,
.calc-page .rules-document,
.calc-page .rule-paper {
  border-color: rgba(194, 166, 110, 0.24);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-soft);
}

.calc-page .calc-disclaimer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  margin-bottom: 22px;
  padding: 18px 20px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.74)),
    radial-gradient(circle at 100% 0%, rgba(194, 166, 110, 0.16), transparent 32%);
}

.calc-page .calc-disclaimer strong {
  display: block;
  color: var(--accent-deep);
  font-size: 1.05rem;
}

.calc-page .calc-disclaimer p {
  margin: 0.35rem 0 0;
  color: var(--text-soft);
}

.calc-page .calc-disclaimer a {
  color: var(--accent-deep);
  font-weight: 800;
}

.calc-page .calc-disclaimer__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 999px;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(194, 166, 110, 0.36);
  background: rgba(255, 255, 255, 0.82);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.calc-page .method-band {
  background: rgba(194, 166, 110, 0.24);
}

.calc-page .method-band > div {
  background: rgba(255, 255, 255, 0.78);
}

.calc-page .method-band strong,
.calc-page .factor-section h3,
.calc-page .factor-title h3 {
  color: var(--accent-deep);
}

.calc-page .section-title h2 {
  font-size: clamp(1.25rem, 2vw, 1.7rem);
}

.calc-page label span,
.calc-page .field-note,
.calc-page .field-help,
.calc-page .method-band p,
.calc-page .notice p {
  color: var(--text-soft);
}

.calc-page input,
.calc-page select {
  border-color: rgba(30, 36, 48, 0.16);
  border-radius: var(--radius-sm);
  background-color: rgba(255, 255, 255, 0.9);
}

.calc-page input:focus,
.calc-page select:focus {
  border-color: rgba(194, 166, 110, 0.72);
  box-shadow: 0 0 0 4px rgba(194, 166, 110, 0.16);
}

.calc-page button:not(.menu-btn):not(.menu-close) {
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent));
  color: #fff;
  box-shadow: 0 16px 34px rgba(169, 138, 75, 0.28);
}

.calc-page button:not(.menu-btn):not(.menu-close):hover {
  transform: translateY(-1px);
  background: linear-gradient(90deg, #927640, var(--accent));
  box-shadow: 0 18px 38px rgba(169, 138, 75, 0.36);
}

.calc-page button.secondary {
  border: 1px solid rgba(194, 166, 110, 0.32);
  background: rgba(255, 255, 255, 0.82) !important;
  color: var(--accent-deep) !important;
  box-shadow: none !important;
}

.calc-page .table-wrap {
  border-color: rgba(194, 166, 110, 0.24);
  border-radius: var(--radius-md);
}

.calc-page th {
  background: rgba(232, 223, 207, 0.78);
  color: var(--text);
}

.calc-page td {
  border-color: rgba(30, 36, 48, 0.1);
}

.calc-page .notice p {
  border-left-color: var(--accent-deep);
  background: rgba(255, 255, 255, 0.7);
}

.calc-page .results-footer {
  z-index: 50;
  border-top-color: rgba(194, 166, 110, 0.28);
  background: rgba(194, 166, 110, 0.22);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.calc-page .results-footer__item {
  background: rgba(255, 255, 255, 0.9);
}

.rules-page main {
  padding-bottom: 60px;
}

.rules-overview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin-bottom: 22px;
  background: rgba(194, 166, 110, 0.24);
}

.rules-overview article {
  padding: 22px;
  background: rgba(255, 255, 255, 0.78);
}

.rules-overview h2 {
  margin: 0;
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.5rem, 2.6vw, 2.25rem);
  line-height: 1;
}

.rules-overview p {
  margin: 0.7rem 0 0;
  color: var(--text-soft);
  line-height: 1.6;
}

.rules-document {
  display: grid;
  gap: 20px;
  margin-top: 22px;
  padding: 24px;
}

.rule-paper {
  padding: clamp(18px, 3vw, 34px);
  box-shadow: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.78)),
    radial-gradient(circle at 100% 0%, rgba(76, 125, 134, 0.1), transparent 30%);
}

.rule-paper__source {
  margin: 0 0 1rem;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-deep);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.rule-paper h3 {
  margin: 0 0 1.1rem;
  max-width: 24ch;
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.9rem, 4vw, 3.4rem);
  line-height: 0.98;
}

.rule-paper h4 {
  margin: 1.35rem 0 0.5rem;
  color: var(--text);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.25;
}

.rule-paper p {
  margin: 0.55rem 0 0;
  color: var(--text-soft);
  line-height: 1.72;
}

.calc-page .menu-btn,
.calc-page .menu-close {
  min-height: 0;
  padding: 0;
  font: inherit;
  cursor: pointer;
}

@media (max-width: 980px) {
  .calc-page .topbar {
    margin-top: 88px;
  }

  .calc-page .topbar::before {
    inset-inline: -10px;
  }

  .calc-page .calc-disclaimer,
  .rules-overview {
    grid-template-columns: 1fr;
  }

  .calc-page .calc-disclaimer__link {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .calc-page .topbar {
    padding-top: 34px;
  }

  .calc-page .topbar h1 {
    font-size: 2.35rem;
  }
}