/* ═══════════════════════════════
   roi-calculator.css — Apex Systematic
═══════════════════════════════ */

.roi-page-header {
  padding-bottom: 48px;
}

.roi-page-header h2 {
  max-width: 600px;
  margin-bottom: 0.75rem;
}

.roi-page-header .section-sub {
  max-width: 480px;
}

/* ── Calculator layout ── */
.roi-section {
  padding: var(--section-y) 0;
}

.roi-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
}

/* ── Input groups ── */
.inputs-group {
  display: flex;
  flex-direction: column;
}

.inputs-block-label {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 18px 0 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.input-row {
  padding: 28px 32px;
  border: 1px solid var(--border);
  border-top: none;
  transition: background var(--ease);
}

.input-row:hover {
  background: var(--surface);
}

.input-row + .inputs-block-label {
  margin-top: 32px;
}

.input-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 18px;
}

.input-label-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--white);
  line-height: 1.4;
}

.input-label-value {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--gold);
  white-space: nowrap;
  margin-left: 16px;
  flex-shrink: 0;
}

/* Slider styling */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 1px;
  background: var(--border-light);
  outline: none;
  cursor: pointer;
  border-radius: 0;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--gold);
  border-radius: 50%;
  cursor: pointer;
  transition: transform var(--ease), box-shadow var(--ease);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.25);
  box-shadow: 0 0 0 6px rgba(201, 168, 76, 0.15);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--gold);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

.range-limits {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

/* ── Results panel ── */
.results-panel {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
}

.results-header {
  padding: 22px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.results-header .section-tag {
  margin-bottom: 0.5rem;
}

.results-header h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--white);
  line-height: 1.2;
}

.metric-primary {
  padding: 36px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}

.metric-label {
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.metric-value-large {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 400;
  color: var(--gold);
  line-height: 1;
  letter-spacing: -0.02em;
  transition: color 0.25s ease;
}

.metric-benchmark {
  margin-top: 12px;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.metric-benchmark strong {
  color: var(--gold-light);
  font-weight: 500;
}

.metric-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--border);
}

.metric-cell {
  padding: 22px 28px;
}

.metric-cell + .metric-cell {
  border-left: 1px solid var(--border);
}

.metric-value-mid {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 400;
  color: var(--white);
  line-height: 1;
  letter-spacing: -0.01em;
}

.metric-sub-label {
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  margin-top: 6px;
}

/* Breakdown */
.breakdown {
  padding: 22px 28px;
  border-bottom: 1px solid var(--border);
}

.breakdown-title {
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid rgba(30, 40, 56, 0.6);
  font-size: 0.78rem;
}

.breakdown-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.breakdown-category {
  color: var(--text-muted);
}

.breakdown-val {
  color: var(--text);
  letter-spacing: 0.04em;
}

/* CTA */
.results-cta {
  padding: 24px 28px;
  background: var(--surface);
}

.results-cta .btn {
  width: 100%;
  margin-bottom: 12px;
}

.results-cta-note {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-align: center;
  line-height: 1.6;
  letter-spacing: 0.02em;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .roi-layout {
    grid-template-columns: 1fr;
  }

  .results-panel {
    position: static;
    order: -1;
  }
}

@media (max-width: 768px) {
  .input-row {
    padding: 22px var(--gutter);
  }

  .metric-value-large {
    font-size: 2.2rem;
  }
}