/* ═══════════════════════════════════════
   ROI CALCULATOR
   ═══════════════════════════════════════ */

.roi-calculator {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.roi-inputs {
  background: var(--color-white);
  border: 2px solid var(--color-slate-200);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
}

.roi-results {
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  color: var(--color-white);
  position: sticky;
  top: 120px;
}

/* ── Slider Groups ── */
.slider-group {
  margin-bottom: var(--space-xl);
}

.slider-group:last-child {
  margin-bottom: 0;
}

.slider-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-md);
}

.slider-label__text {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-navy-800);
}

.slider-label__value {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-brand-blue);
}

/* ── Range Slider Styling ── */
.slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--color-slate-200);
  outline: none;
  cursor: pointer;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-brand-blue);
  box-shadow: 0 2px 8px rgba(75, 139, 245, 0.4);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-brand-blue);
  box-shadow: 0 2px 8px rgba(75, 139, 245, 0.4);
  cursor: pointer;
  border: none;
}

/* ── Use Case Select ── */
.roi-select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--color-slate-200);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--color-navy-800);
  background: var(--color-white);
  cursor: pointer;
}

.roi-select:focus {
  outline: none;
  border-color: var(--color-brand-blue);
}

/* ── Results Display ── */
.roi-results__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  color: var(--color-white);
}

.roi-stat {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.roi-stat:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.roi-stat__label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-slate-400);
  margin-bottom: var(--space-xs);
}

.roi-stat__value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.1;
}

.roi-stat__value--highlight {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.roi-stat__note {
  font-size: 0.8rem;
  color: var(--color-slate-400);
  margin-top: var(--space-xs);
}

/* ── Summary Cards ── */
.roi-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.roi-summary-card {
  text-align: center;
  padding: var(--space-xl);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.roi-summary-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-md);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(75,139,245,0.1), rgba(8,145,178,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
}

.roi-summary-card__icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-brand-blue);
  fill: none;
  stroke-width: 2;
}

.roi-summary-card__value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-navy-900);
}

.roi-summary-card__label {
  font-size: 0.85rem;
  color: var(--color-slate-500);
  margin-top: var(--space-xs);
}