.calc-section {
  padding: 4rem 0;
  background: var(--bg-color);
}
.calc-container {
  max-width: 1000px;
  margin: 0 auto;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  padding: 2.5rem;
}
.calc-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
.calc-header-icon {
  width: 56px;
  height: 56px;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.calc-header-text h1 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}
.calc-header-text p {
  color: var(--text-sub);
  margin: 0;
  font-size: 0.95rem;
}
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}
@media (max-width: 768px) {
  .calc-grid { grid-template-columns: 1fr; }
  .calc-container { padding: 1.5rem; }
}

/* ── Left Column (Form) ── */
.calc-form-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.calc-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}
.calc-form-group {
  display: flex;
  flex-direction: column;
}
.calc-form-group.full {
  grid-column: 1 / -1;
}
.calc-form-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-sub);
  margin-bottom: 0.5rem;
  font-weight: 500;
}
.calc-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.calc-input-icon {
  position: absolute;
  left: 1rem;
  color: var(--primary);
}
.calc-input-unit {
  position: absolute;
  right: 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-sub);
}
.calc-input-wrap input {
  width: 100%;
  padding: 0.8rem 1rem 0.8rem 2.5rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
}
.calc-input-wrap input:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--teal-light);
}

.calc-sex-toggle {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
}
.calc-sex-btn {
  flex: 1;
  padding: 0.75rem;
  border: 1px solid var(--gray-200);
  background: var(--white);
  border-radius: var(--radius-pill);
  font-weight: 600;
  color: var(--text-sub);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition);
}
.calc-sex-btn.active.male {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--teal-light);
}
.calc-sex-btn.active.female {
  border-color: #E83E8C;
  color: #E83E8C;
  background: #FFF0F6;
}

.calc-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}
@media (max-width: 500px) {
  .calc-actions { flex-direction: column; }
}

.calc-note {
  font-size: 0.85rem;
  color: var(--text-sub);
  margin-top: 1.5rem;
  line-height: 1.6;
}

/* ── Right Column (Results) ── */
.calc-results-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.calc-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.calc-stat-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.calc-stat-label {
  font-size: 0.8rem;
  color: var(--text-sub);
  margin-bottom: 0.5rem;
}
.calc-stat-val {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.calc-recom-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--primary);
  font-size: 1.05rem;
  margin-bottom: 1rem;
}
.calc-recom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.calc-recom-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
}
.calc-recom-card img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  background: var(--gray-50);
}
.calc-recom-card h5 {
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}
.calc-recom-card .price {
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.75rem;
}
.calc-recom-card .btn {
  width: 100%;
  padding: 0.4rem;
  font-size: 0.85rem;
}

.calc-results-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-200);
}
.calc-results-note {
  font-size: 0.8rem;
  color: var(--secondary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}