/* Shared calculator page styles */
.calculator-page { padding-top: 42px; }

.calc-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 28px;
}

.calc-top h1 {
  margin-bottom: 12px;
  font-size: clamp(2.6rem, 5vw, 4.6rem);
}

.calculator-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 24px;
  align-items: start;
}

.calculator-panel,
.results-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.panel-title-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 26px;
}

.panel-title-row h2 {
  margin-bottom: 0;
  font-size: 1.2rem;
  color: var(--muted);
  font-weight: 500;
}

.unit-toggle {
  display: flex;
  height: 42px;
  padding: 4px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  flex-shrink: 0;
}

.unit-toggle button {
  border: 0;
  background: transparent;
  padding: 0 16px;
  border-radius: 9px;
  font-weight: 800;
  color: var(--muted);
  cursor: pointer;
}

.unit-toggle button.active {
  background: white;
  color: var(--orange-dark);
  box-shadow: 0 6px 16px rgba(28, 28, 28, 0.08);
}

.real-form { margin-top: 24px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}

.real-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-weight: 800;
  font-size: 0.9rem;
}

.real-form label span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.real-form label small {
  color: var(--muted);
  font-weight: 500;
}

.input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-soft);
}

.input-wrap input,
.input-wrap select {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  padding: 16px 0;
  flex: 1;
  min-width: 0;
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
}

.input-wrap:focus-within {
  outline: 3px solid rgba(244, 123, 32, 0.2);
  border-color: var(--orange);
}

.input-wrap em {
  color: var(--muted);
  font-style: normal;
  font-weight: 700;
  white-space: nowrap;
}

.tip-box {
  margin-top: 24px;
  padding: 18px;
  border: 1px solid rgba(32, 150, 86, 0.18);
  background: rgba(32, 150, 86, 0.07);
  border-radius: 16px;
}

.tip-box strong {
  display: block;
  color: #08723d;
  margin-bottom: 5px;
}

.tip-box span {
  color: #18764a;
  font-size: 0.92rem;
}

.results-panel {
  position: sticky;
  top: 100px;
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.results-panel h2 {
  font-size: clamp(3rem, 7vw, 4.8rem);
  letter-spacing: -0.05em;
  margin-bottom: 8px;
}

.result-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.result-list div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.result-list span {
  color: var(--muted);
  font-weight: 700;
}

.result-list strong {
  font-size: 1.05rem;
}

.modern-results div::after {
  content: "";
  flex: 1;
  border-bottom: 2px dotted var(--border);
  order: 2;
}

.modern-results span { order: 1; }
.modern-results strong { order: 3; }

.copy-btn {
  width: 100%;
  margin-top: 18px;
  border-color: var(--orange);
  color: var(--orange-dark);
}

.formula-strip {
  margin-top: 24px;
  padding: 22px 26px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.formula-strip strong {
  display: block;
  margin-bottom: 12px;
}

.formula-strip div {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
}

.page-meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 18px;
}

/* SEO content blocks */

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.breadcrumbs a {
  color: var(--orange-dark);
}

.seo-content {
  margin-top: 36px;
  padding: 34px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.seo-content h2 {
  margin-top: 34px;
  margin-bottom: 12px;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.035em;
}

.seo-content h2:first-child {
  margin-top: 0;
}

.seo-content p {
  max-width: 820px;
  color: var(--muted);
  line-height: 1.75;
}

.seo-formula {
  margin: 18px 0;
  padding: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  color: var(--text);
  font-weight: 900;
}

.seo-table-wrap {
  overflow-x: auto;
  margin-top: 18px;
}

.seo-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.seo-table th,
.seo-table td {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.seo-table th {
  background: var(--surface-soft);
  font-weight: 900;
}

.seo-table tr:last-child td {
  border-bottom: 0;
}

.faq-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.faq-list details {
  padding: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 900;
}

.faq-list p {
  margin-top: 12px;
  margin-bottom: 0;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 18px;
}

.related-card {
  display: grid;
  gap: 8px;
  padding: 20px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: 0.2s ease;
}

.related-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.related-card strong {
  color: var(--text);
}

.related-card span {
  color: var(--muted);
  line-height: 1.5;
}

@media (max-width: 800px) {
  .seo-content {
    padding: 24px;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .calc-top,
  .panel-title-row {
    flex-direction: column;
  }

  .calculator-layout {
    grid-template-columns: 1fr;
  }

  .results-panel {
    position: static;
  }

  .unit-toggle {
    width: 100%;
  }

  .unit-toggle button {
    flex: 1;
  }
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}