/* ==========================================================================
   ZAHIQ AI - Interactive ROI Calculator
   Visual Savings Calculator with Sliders
   ========================================================================== */

.roi-section {
  padding: var(--space-20) 0;
  background: var(--gray-1);
  position: relative;
  overflow: hidden;
}

.roi-container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.roi-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  text-align: center;
  margin-bottom: var(--space-12);
  letter-spacing: var(--tracking-tight);
}

/* Calculator Interactive */
.calculator-interactive {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  background: var(--white);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-large);
}

/* Calculator Inputs */
.calculator-inputs {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: relative;
}

/* Range slider wrapper for track fill */
.range-wrapper {
  position: relative;
  width: 100%;
}

.range-fill {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  height: 8px;
  background: var(--blue);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 0.3s ease;
  pointer-events: none;
  z-index: 1;
  opacity: 1;
  display: block;
}

.input-group label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--gray-4);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
}

/* Custom Range Slider */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  background: transparent;
  border-radius: var(--radius-full);
  outline: none;
  position: relative;
  z-index: 2;
  transition: var(--transition-all);
}

/* Range track background */
.range-track {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  width: 100%;
  height: 8px;
  background: var(--gray-2);
  border-radius: var(--radius-full);
  z-index: 0;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  background: var(--blue);
  border: 2px solid var(--white);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 112, 243, 0.3);
  transition: var(--transition-all);
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--blue);
  border: 2px solid var(--white);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 112, 243, 0.3);
  transition: var(--transition-all);
  border: none;
}

input[type="range"]:hover::-webkit-slider-thumb {
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(0, 112, 243, 0.4);
}

input[type="range"]:hover::-moz-range-thumb {
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(0, 112, 243, 0.4);
}


.input-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--black);
  margin-top: var(--space-2);
}

/* Calculator Results */
.calculator-results {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  justify-content: center;
}

/* Savings Circle */
.result-visual {
  display: flex;
  justify-content: center;
}

.savings-circle {
  width: 240px;
  height: 240px;
  background: transparent;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.savings-amount {
  display: flex;
  align-items: baseline;
}

.savings-currency {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.savings-number {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-variant-numeric: tabular-nums;
}

.savings-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-top: var(--space-2);
}

/* Result Breakdown */
.result-breakdown {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--gray-1);
  border-radius: var(--radius-lg);
}

.breakdown-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--gray-2);
}

.breakdown-item:last-child {
  border-bottom: none;\n  padding-bottom: 0;
}

.breakdown-label {
  font-size: var(--text-sm);
  color: var(--gray-4);
  font-weight: var(--font-medium);
}

.breakdown-value {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--black);
}

/* Animated Value Changes */
.savings-number,
.breakdown-value {
  transition: all 0.5s ease;
}

.savings-number.updating,
.breakdown-value.updating {
  animation: value-update 0.5s ease;
}

@keyframes value-update {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); filter: brightness(1.2); }
  100% { transform: scale(1); }
}

/* Interactive Hover Effects */
.input-group:hover .range-fill {
  background: var(--blue);
  filter: brightness(1.1);
}

/* Fix for Firefox range input */
input[type="range"]::-moz-range-track {
  background: transparent;
  height: 8px;
  border-radius: var(--radius-full);
  border: none;
}

input[type="range"]::-moz-range-progress {
  background: transparent;
  height: 8px;
  border-radius: var(--radius-full);
}

input[type="range"]::-moz-focus-outer {
  border: 0;
}

/* Responsive */
@media (max-width: 1024px) {
  .calculator-interactive {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .calculator-results {
    padding-top: var(--space-8);
    border-top: 1px solid var(--gray-2);
  }
}

@media (max-width: 768px) {
  .calculator-interactive {
    padding: var(--space-6);
  }
  
  .savings-circle {
    width: 200px;
    height: 200px;
  }
  
  .savings-number {
    font-size: var(--text-4xl);
  }
}