.date-calculator {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 8px 0 36px;
}

.date-calculator-tabs {
  display: inline-flex;
  gap: 10px;
  margin-bottom: 18px;
  padding: 6px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(15, 23, 42, 0.05);
}

.date-calculator-tab {
  min-width: 112px;
  height: 40px;
  padding: 0 18px;
  border: none;
  border-radius: 12px;
  background: transparent;
  color: #4b5563;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.date-calculator-tab.is-active {
  background: #1d1d1f;
  color: #ffffff;
  box-shadow: 0 10px 18px rgba(15, 23, 42, 0.12);
}

.date-calculator-panel,
.date-calculator-result-section,
.date-calculator-details-section {
  margin-bottom: 20px;
}

.date-calculator-hero,
.date-calculator-card,
.date-calculator-result-section,
.date-calculator-details-section {
  padding: 18px;
  border-radius: 20px;
  border: 1px solid rgba(15, 23, 42, 0.05);
  background: rgba(255, 255, 255, 0.72);
}

.date-calculator-hero {
  margin-bottom: 16px;
  background:
    linear-gradient(135deg, rgba(52, 199, 89, 0.12), rgba(255, 255, 255, 0.82)),
    rgba(255, 255, 255, 0.8);
}

.date-calculator-hero-title {
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 700;
  color: #1f2937;
}

.date-calculator-hero-desc {
  font-size: 12px;
  line-height: 1.6;
  color: #6b7280;
}

.date-calculator-grid {
  display: grid;
  gap: 14px;
}

.date-calculator-grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.date-calculator-grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.date-calculator-field {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.date-calculator-label {
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 600;
  color: #4b5563;
}

.date-calculator-control {
  width: 100%;
  height: 44px;
  padding: 0 12px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.92);
  color: #1f2937;
  font: inherit;
  font-size: 12px;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.date-calculator-control:focus {
  border-color: rgba(52, 199, 89, 0.28);
  box-shadow: 0 0 0 3px rgba(52, 199, 89, 0.12);
}

.date-calculator-toggle-grid {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.date-calculator-toggle-grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.date-calculator-toggle-card {
  position: relative;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  background: rgba(255, 255, 255, 0.84);
  cursor: pointer;
}

.date-calculator-toggle-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.date-calculator-toggle-marker {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1.5px solid rgba(15, 23, 42, 0.18);
  background: #ffffff;
  margin-top: 2px;
  transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.date-calculator-toggle-card input:checked + .date-calculator-toggle-marker {
  border-color: rgba(52, 199, 89, 0.6);
  background: #34c759;
  box-shadow: inset 0 0 0 4px #ffffff;
}

.date-calculator-toggle-title {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
  font-weight: 700;
  color: #374151;
}

.date-calculator-toggle-desc {
  display: block;
  font-size: 12px;
  line-height: 1.6;
  color: #6b7280;
}

.date-calculator-section-title {
  margin-bottom: 14px;
  font-size: 15px;
  font-weight: 700;
  color: #374151;
}

.date-calculator-result-content {
  min-height: 120px;
}

.date-calculator-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.date-calculator-result-card {
  padding: 16px;
  border-radius: 16px;
  border: 1px solid rgba(15, 23, 42, 0.05);
  background: rgba(255, 255, 255, 0.92);
}

.date-calculator-result-card.is-highlight {
  background: rgba(52, 199, 89, 0.08);
  border-color: rgba(52, 199, 89, 0.14);
}

.date-calculator-result-label {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 600;
  color: #6b7280;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.date-calculator-result-value {
  font-size: 24px;
  font-weight: 700;
  color: #111827;
}

.date-calculator-result-text {
  font-size: 14px;
  line-height: 1.6;
  color: #374151;
}

.date-calculator-details-content {
  display: grid;
  gap: 12px;
}

.date-calculator-detail-item {
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(15, 23, 42, 0.05);
  background: rgba(255, 255, 255, 0.92);
}

.date-calculator-detail-label {
  margin-bottom: 4px;
  font-size: 12px;
  font-weight: 700;
  color: #4b5563;
}

.date-calculator-detail-value {
  font-size: 13px;
  line-height: 1.6;
  color: #6b7280;
}

.date-calculator-error {
  padding: 16px;
  border-radius: 14px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.12);
  color: #dc2626;
  font-size: 14px;
  line-height: 1.6;
  text-align: center;
}

@media (max-width: 768px) {
  .date-calculator-grid-3,
  .date-calculator-grid-2,
  .date-calculator-result-grid,
  .date-calculator-toggle-grid-2 {
    grid-template-columns: 1fr;
  }

  .date-calculator-tabs {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .date-calculator-tab {
    width: 100%;
    min-width: 0;
  }
}