.calculator {
  padding: var(--section-padding) 0;
  position: relative;
}

.calculator::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--card-border), transparent);
}

.calc-wrapper {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 40px;
  align-items: start;
}

.calc-main {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 32px;
}

.calc-section {
  margin-bottom: 32px;
}

.calc-section:last-child {
  margin-bottom: 0;
}

.calc-section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
}

.calc-section-num {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: white;
}

/* Site Type Options */
.calc-site-types {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.calc-option {
  cursor: pointer;
  display: flex;
}

.calc-option input {
  display: none;
}

.calc-option-card {
  background: var(--card-hover);
  border: 2px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  text-align: center;
  transition: var(--transition-base);
  width: 100%;
  height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.calc-option:hover .calc-option-card {
  border-color: rgba(16, 185, 129, 0.3);
}

.calc-option input:checked + .calc-option-card {
  border-color: var(--primary);
  background: rgba(16, 185, 129, 0.1);
  box-shadow: 0 0 20px var(--primary-glow);
}

.calc-option-icon {
  font-size: 32px;
  margin-bottom: 8px;
}

.calc-option-name {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
}

.calc-option-price {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
}

/* Design Options */
.calc-design-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.calc-option-horizontal {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  text-align: left;
}

.calc-option-icon-sm {
  font-size: 22px;
  width: 44px;
  height: 44px;
  background: var(--card);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.calc-option-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  flex: 1;
}

.calc-option-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.calc-option-modifier {
  padding: 6px 12px;
  background: var(--card);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-left: auto;
}

.calc-option-modifier-premium {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(245, 158, 11, 0.1));
  color: var(--purple);
}

/* Features */
.calc-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.calc-feature {
  cursor: pointer;
}

.calc-feature input {
  display: none;
}

.calc-feature-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--card-hover);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.calc-feature:hover .calc-feature-card {
  border-color: rgba(16, 185, 129, 0.3);
}

.calc-feature input:checked + .calc-feature-card {
  border-color: var(--primary);
  background: rgba(16, 185, 129, 0.1);
}

.calc-feature-check {
  width: 20px;
  height: 20px;
  border: 2px solid var(--card-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition-base);
}

.calc-feature-check::after {
  content: '✓';
  font-size: 12px;
  color: white;
  opacity: 0;
  transition: var(--transition-fast);
}

.calc-feature input:checked + .calc-feature-card .calc-feature-check {
  background: var(--primary);
  border-color: var(--primary);
}

.calc-feature input:checked + .calc-feature-card .calc-feature-check::after {
  opacity: 1;
}

.calc-feature-card span:nth-child(2) {
  flex: 1;
  font-size: 14px;
}

.calc-feature-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.calc-feature-text .calc-feature-name,
.calc-feature-text > span:first-child {
  font-size: 14px;
  color: var(--text-primary);
}

.calc-feature-text .calc-feature-desc {
  font-size: 12px;
  color: var(--text-muted);
  opacity: 0.7;
}

.calc-feature-price {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
}

/* Calculator Sidebar */
.calc-sidebar {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.calc-result-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.02));
  border: 2px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-xl);
  padding: 28px;
}

.calc-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.calc-result-header h4 {
  font-size: 18px;
  font-weight: 700;
}

.calc-result-live {
  padding: 4px 10px;
  background: rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  animation: pulse-glow 2s infinite;
}

.calc-result-breakdown {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--card-border);
}

.calc-result-row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.calc-result-row:last-child {
  margin-bottom: 0;
}

.calc-result-total {
  text-align: center;
  margin-bottom: 20px;
}

.calc-result-total-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.calc-result-total-value {
  font-size: 36px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
}

.calc-result-total-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.calc-result-time {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  background: var(--card);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.calc-result-time svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--primary);
  stroke-width: 2;
}

.calc-result-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  font-size: 16px;
  font-weight: 700;
  color: white;
  transition: var(--transition-base);
  margin-bottom: 16px;
}

.calc-result-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px var(--primary-glow);
}

.calc-result-btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.calc-result-guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.calc-result-guarantee svg {
  width: 16px;
  height: 16px;
  fill: var(--primary);
}

/* Comparison */
.calc-comparison {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 24px;
}

.calc-comparison-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
}

.calc-comparison-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 16px;
}

.calc-comparison-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.calc-comparison-bar {
  height: 8px;
  background: var(--card-hover);
  border-radius: 4px;
  overflow: hidden;
}

.calc-comparison-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 4px;
  transition: width 0.5s ease;
}

.calc-comparison-fill-gray {
  background: #475569;
}

.calc-comparison-info {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

.calc-comparison-name {
  color: var(--text-secondary);
}

.calc-comparison-price {
  font-weight: 600;
}

.calc-comparison-note {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

/* ROI Calculator */
.calc-roi {
  margin-top: 48px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.02));
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-xl);
  padding: 32px;
}

.calc-roi-header {
  text-align: center;
  margin-bottom: 32px;
}

.calc-roi-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(245, 158, 11, 0.2);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--purple);
  margin-bottom: 12px;
}

.calc-roi-badge svg {
  width: 18px;
  height: 18px;
}

.calc-roi-title {
  font-size: 24px;
  font-weight: 800;
}

.calc-roi-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.calc-roi-inputs {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.calc-roi-input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.calc-roi-input-group label {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-roi-input-group label span {
  font-weight: 600;
  color: var(--primary);
}

.calc-roi-input-group input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  background: var(--card-border);
  border-radius: 4px;
  cursor: pointer;
  border: none;
  padding: 0;
}

.calc-roi-input-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.4);
  transition: var(--transition-base);
}

.calc-roi-input-group input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 2px 10px rgba(16, 185, 129, 0.6);
}

.calc-roi-input-group input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.4);
}

.calc-roi-input-group input[type="range"]:focus {
  outline: none;
}

.calc-roi-input-group input[type="number"] {
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition-base);
}

.calc-roi-input-group input[type="number"]:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

.calc-roi-results {
  display: flex;
  gap: 20px;
}

.calc-roi-result {
  flex: 1;
  text-align: center;
  padding: 24px 16px;
  background: var(--card);
  border-radius: var(--radius-lg);
}

.calc-roi-result-icon {
  font-size: 32px;
  margin-bottom: 8px;
}

.calc-roi-result-value {
  font-size: 24px;
  font-weight: 900;
  color: var(--purple);
  margin-bottom: 4px;
}

.calc-roi-result-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Calculator Responsive */
@media (max-width: 1200px) {
  .calc-wrapper {
    grid-template-columns: 1fr;
  }
  
  .calc-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .calc-site-types {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .calc-features {
    grid-template-columns: 1fr;
  }
  
  .calc-sidebar {
    grid-template-columns: 1fr;
  }
  
  .calc-roi-content {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .calc-roi-results {
    flex-wrap: wrap;
  }
  
  .calc-roi-result {
    min-width: calc(50% - 10px);
  }
}

@media (max-width: 480px) {
  .calc-site-types {
    grid-template-columns: 1fr;
  }
  
  .calc-roi-results {
    flex-direction: column;
  }
  
  .calc-roi-result {
    min-width: 100%;
  }
}
/* ========================================
   Calculator Categories (Accordion)
   ======================================== */

.calc-category {
  margin-bottom: 12px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
}

.calc-category:last-child {
  margin-bottom: 0;
}

.calc-category:hover {
  border-color: rgba(16, 185, 129, 0.3);
}

.calc-category-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(22, 27, 34, 0.5);
  border: none;
  cursor: pointer;
  text-align: left;
  transition: all 0.3s ease;
}

.calc-category-header:hover {
  background: rgba(22, 27, 34, 0.8);
}

.calc-category-header.active {
  background: rgba(16, 185, 129, 0.08);
  border-bottom: 1px solid var(--card-border);
}

.calc-category-icon {
  font-size: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.calc-category-info {
  flex: 1;
  min-width: 0;
}

.calc-category-name {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.calc-category-desc {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
}

.calc-category-selected {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(16, 185, 129, 0.15);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  white-space: nowrap;
  opacity: 0.7;
  transition: opacity 0.3s;
}

.calc-category-selected.has-selection {
  opacity: 1;
  background: var(--primary);
  color: white;
}

.calc-category-arrow {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.calc-category-header.active .calc-category-arrow {
  transform: rotate(180deg);
  color: var(--primary);
}

.calc-category-content {
  display: none;
  padding: 20px;
  background: rgba(1, 4, 9, 0.3);
  animation: slideDown 0.3s ease;
}

.calc-category-content.active {
  display: block;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Feature cards inside categories */
.calc-category-content .calc-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.calc-category-content .calc-feature-card {
  padding: 14px 16px;
  min-height: auto;
  flex-direction: row;
  align-items: center;
  gap: 12px;
}

.calc-category-content .calc-feature-check {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.calc-feature-text {
  flex: 1;
  min-width: 0;
}

.calc-feature-text span:first-child {
  display: block;
  font-weight: 500;
  color: var(--text);
  line-height: 1.3;
}

.calc-feature-note {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.calc-category-content .calc-feature-price {
  font-size: 13px;
  white-space: nowrap;
  margin-left: auto;
}

/* Wide features for mobile apps */
.calc-features-mobile {
  grid-template-columns: 1fr !important;
}

.calc-feature-wide .calc-feature-card {
  padding: 18px 20px;
}

/* Mobile app note */
.calc-mobile-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 16px;
  padding: 14px 16px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--text-secondary);
}

.calc-mobile-note svg {
  width: 18px;
  height: 18px;
  color: var(--gold);
  flex-shrink: 0;
  margin-top: 1px;
}

/* Responsive */
@media (max-width: 768px) {
  .calc-category-content .calc-features {
    grid-template-columns: 1fr;
  }
  
  .calc-category-header {
    padding: 14px 16px;
    gap: 12px;
  }
  
  .calc-category-icon {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }
  
  .calc-category-name {
    font-size: 14px;
  }
  
  .calc-category-desc {
    font-size: 12px;
  }
  
  .calc-category-selected {
    display: none;
  }
  
  .calc-category-content .calc-feature-card {
    flex-wrap: wrap;
  }
  
  .calc-category-content .calc-feature-price {
    width: 100%;
    margin-left: 30px;
    margin-top: 6px;
  }
}