/* f:\kwcalc.com\css\calculator-page-style.css */

.page-wrapper {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

/* Minimal Hero Section */
.hero-section {
  text-align: center;
  margin-bottom: 4rem;
  padding: 1rem 0;
}

.hero-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background-color: var(--bg-white);
  color: var(--text-main);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
}

.hero-badge svg {
  width: 14px;
  height: 14px;
  color: var(--primary);
}

.hero-section h1 {
  font-size: 2.25rem;
  color: var(--text-main);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.hero-section p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto;
}

/* Clean Calculator Container */
.calculator-container {
  max-width: 800px;
  margin: 0 auto 4rem;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.calculator-header {
  background-color: var(--bg-light);
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.calculator-header h2 {
  font-size: 1.15rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

.calculator-body {
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-main);
  font-size: 0.9rem;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.calc-input, .calc-select {
  width: 100%;
  padding: 0.65rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-white);
  color: var(--text-main);
  transition: var(--transition);
  font-family: inherit;
}

.calc-input:focus, .calc-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.input-unit {
  position: absolute;
  right: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

.calc-input {
  padding-right: 3rem;
}

/* Button Group */
.button-group {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.calc-btn, .reset-btn {
  flex: 1;
  padding: 0.85rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
}

.calc-btn {
  background-color: var(--primary);
  color: white;
  border: none;
}

.calc-btn:hover {
  background-color: var(--primary-hover);
}

.reset-btn {
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.reset-btn:hover {
  background-color: var(--bg-light);
  border-color: var(--text-muted);
}

/* Clean Result display */
.result-box {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background-color: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  text-align: center;
  display: none;
}

.result-box.show {
  display: block;
}

.result-box.error {
  background-color: #fef2f2;
  border-color: #fecaca;
  color: #ef4444;
}

.result-label {
  font-size: 0.85rem;
  color: #166534;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.result-box.error .result-label {
  color: #b91c1c;
}

.result-value {
  font-size: 2.25rem;
  font-weight: 700;
  color: #15803d;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
}

.result-value .unit {
  font-size: 1.15rem;
  font-weight: 600;
}

/* SEO Content Sections Improvements */
.content-section {
  max-width: 800px;
  margin: 0 auto;
}

.content-block {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.content-block h2 {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--text-main);
  font-weight: 600;
}

.content-block h3 {
  font-size: 1.15rem;
  margin-bottom: 1rem;
  margin-top: 1.5rem;
  color: var(--text-main);
  font-weight: 600;
}

.content-block p {
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 1rem;
}

.content-block strong {
  color: var(--text-main);
}

.formula-box {
  background: var(--bg-light);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--primary);
  margin: 1.25rem 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 1rem;
  color: var(--text-main);
  overflow-x: auto;
}

.conversion-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.conversion-table th, .conversion-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.conversion-table th {
  background-color: var(--bg-light);
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.95rem;
}

.conversion-table td {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* FAQ Accordion Clean */
.faq-item {
  border-bottom: 1px solid var(--border-color);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.25rem 0;
  background: none;
  border: none;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: inherit;
}

.faq-icon {
  width: 20px;
  height: 20px;
  position: relative;
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-icon::before, .faq-icon::after {
  content: '';
  position: absolute;
  background-color: var(--primary);
  transition: transform 0.2s ease;
}

.faq-icon::before {
  top: 9px;
  left: 0;
  width: 20px;
  height: 2px;
}

.faq-icon::after {
  top: 0;
  left: 9px;
  width: 2px;
  height: 20px;
}

.faq-question[aria-expanded="true"] .faq-icon::after {
  transform: rotate(90deg);
  opacity: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease;
}

.faq-answer p {
  padding-bottom: 1.25rem;
  margin: 0;
  color: var(--text-muted);
}

/* Related Calculators */
.related-calculators {
  max-width: 800px;
  margin: 4rem auto 4rem;
}

.related-calculators h3 {
  font-size: 1.35rem;
  color: var(--text-main);
  text-align: left;
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.related-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1rem;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
}

.related-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.related-card h4 {
  font-size: 1.05rem;
  margin-bottom: 0;
  font-weight: 600;
}

.related-card h4 a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

.related-card h4 a:hover {
  text-decoration: underline;
  color: var(--primary-hover);
}

/* Bottom Related Cards (4 Column Grid) */
.more-calculators-section {
  max-width: var(--max-width, 1000px);
  margin: 4rem auto;
  padding: 0 1.5rem;
}

.more-calculators-section .section-heading {
  font-size: 1.5rem;
  color: var(--text-main);
  text-align: center;
  margin-bottom: 2.5rem;
  font-weight: 700;
}

.more-calculators-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.more-calc-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.more-calc-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.calc-icon {
  width: 56px;
  height: 56px;
  background-color: #eff6ff;
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}

.calc-icon svg {
  width: 28px;
  height: 28px;
}

.calc-title {
  font-size: 1.1rem;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.calc-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 1.75rem;
  flex-grow: 1;
}

.calc-btn-link {
  display: block;
  background-color: var(--bg-white);
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--transition);
  margin-top: auto;
}

.calc-btn-link:hover {
  background-color: var(--primary);
  color: white;
}

@media (max-width: 1024px) {
  .more-calculators-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}


@media (max-width: 900px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 1.75rem;
  }
  
  .content-block {
    padding: 1.5rem;
  }

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