/* ROI Calculator */
.roi-calculator {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  padding: 40px;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}

.roi-calculator::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.calculator-header {
  text-align: center;
  margin-bottom: 40px;
}

.calculator-header h3 {
  font-size: 1.75rem;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.calculator-header p {
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto;
}

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

@media (max-width: 900px) {
  .calculator-grid {
    grid-template-columns: 1fr;
  }
}

/* Inputs Section */
.calculator-inputs {
  display: grid;
  gap: 24px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.input-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 0.95rem;
}

.input-value {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 700;
}

.input-field {
  width: 100%;
  height: 48px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 16px;
  color: var(--text);
  font-size: 1rem;
  transition: all var(--transition);
}

.input-field:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1);
}

.range-input {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  outline: none;
  padding: 0;
}

.range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(34, 211, 238, 0.4);
  transition: transform var(--transition);
}

.range-input::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.range-input::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(34, 211, 238, 0.4);
  transition: transform var(--transition);
}

.range-input::-moz-range-thumb:hover {
  transform: scale(1.2);
}

.range-input::-webkit-slider-runnable-track {
  background: linear-gradient(
    to right,
    var(--accent) 0%,
    var(--accent) var(--range-progress, 50%),
    rgba(255, 255, 255, 0.08) var(--range-progress, 50%),
    rgba(255, 255, 255, 0.08) 100%
  );
  border-radius: 4px;
  height: 8px;
}

.range-input::-moz-range-track {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  height: 8px;
}

.range-input::-moz-range-progress {
  background: var(--accent);
  border-radius: 4px;
  height: 8px;
}

.select-field {
  position: relative;
}

.select-field select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%2322d3ee' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.select-field select option {
  background: var(--bg-card);
  color: var(--text);
}

/* Results Section */
.calculator-results {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(34, 211, 238, 0.05));
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid rgba(34, 211, 238, 0.2);
}

.results-header {
  margin-bottom: 24px;
}

.results-header h4 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--accent);
}

.results-header p {
  font-size: 0.9rem;
  color: var(--muted);
}

.results-grid {
  display: grid;
  gap: 20px;
}

.result-card {
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--line);
  transition: all var(--transition);
}

.result-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 8px 24px rgba(34, 211, 238, 0.15);
}

.result-label {
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.result-value {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, #22d3ee, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: 4px;
}

.result-description {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.4;
}

.result-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 8px;
}

.result-badge.positive {
  background: rgba(34, 197, 94, 0.15);
  color: #22c55e;
}

.result-badge.warning {
  background: rgba(251, 191, 36, 0.15);
  color: #fbbf24;
}

/* Calculation Note */
.calculation-note {
  margin-top: 24px;
  padding: 16px;
  background: rgba(59, 130, 246, 0.08);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
}

.calculation-note p {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0;
}

/* Reset Button */
.calculator-actions {
  margin-top: 32px;
  display: flex;
  justify-content: center;
  gap: 16px;
}

.btn-reset {
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  transition: all var(--transition);
}

.btn-reset:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent);
  color: var(--accent);
}

/* Loading State */
.calculator-results.calculating {
  opacity: 0.6;
  pointer-events: none;
}

.calculator-results.calculating::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border: 3px solid rgba(34, 211, 238, 0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Light Theme Adjustments */
body.light-theme .roi-calculator {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
}

body.light-theme .input-field {
  background: rgba(15, 23, 42, 0.04);
}

body.light-theme .input-field:focus {
  background: rgba(15, 23, 42, 0.06);
}

body.light-theme .calculator-results {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(14, 165, 233, 0.04));
}

body.light-theme .result-card {
  background: rgba(255, 255, 255, 0.8);
}