/* roi.css — /roi layout only. Colors via tokens. No base.css duplication. */

.roi-page { padding-top: var(--nav-height, 72px); }

.reading-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--dv-orange); z-index: 1000; transition: width 100ms linear;
}

/* ── S1: Hero (light — functional page, calculator is the anchor) ── */
.roi-hero {
  padding: var(--space-10) 0 var(--space-6);
  border-bottom: 1px solid var(--border-light);
}
.roi-hero .eyebrow { color: var(--dv-orange); }
.roi-hero h1 { margin: var(--space-2) 0 var(--space-3); max-width: 600px; }
.roi-hero__sub { font-size: var(--text-lg); color: var(--text-secondary); max-width: 640px; line-height: 1.65; margin-bottom: var(--space-2); }
.roi-hero__disclaimer { font-size: var(--text-xs); color: var(--text-muted); max-width: 640px; line-height: 1.5; }

/* ── S2: Calculator ── */
.roi-calc { padding: var(--space-8) 0 var(--space-10); }

/* Tab strip */
.roi-tabs { display: flex; gap: 0; border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; margin-bottom: var(--space-6); max-width: 560px; }
.roi-tab-btn {
  flex: 1; padding: var(--space-2) var(--space-3);
  font-family: var(--font-display); font-size: var(--text-sm); font-weight: 600;
  background: var(--bg-surface); color: var(--text-secondary);
  border: none; cursor: pointer; transition: background var(--transition-base), color var(--transition-base);
  text-align: center; line-height: 1.4;
}
.roi-tab-btn:first-child { border-right: 1px solid var(--border); }
.roi-tab-btn.active {
  background: var(--dv-orange); color: var(--text-hero-color);
}

/* Privacy reassurance */
.roi-privacy {
  display: flex; align-items: center; gap: var(--space-1);
  font-size: var(--text-xs); color: var(--text-muted); margin-bottom: var(--space-5);
}
.roi-privacy svg { width: 14px; height: 14px; flex-shrink: 0; color: var(--dv-teal); }

/* Tab panels */
.roi-panel { display: none; }
.roi-panel.active { display: block; }

/* Calculator layout: inputs left, results right */
.roi-calc__grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-6); align-items: start;
}

/* Input section */
.roi-inputs { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5); }
.roi-inputs__label { font-size: var(--text-xs); font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--space-4); display: block; }
.roi-field { margin-bottom: var(--space-3); }
.roi-field label { display: block; font-size: var(--text-sm); font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.roi-field input {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: var(--radius-md);
  background: var(--bg-card); color: var(--text-primary);
  font-family: var(--font-body); font-size: var(--text-sm);
  transition: border-color var(--transition-base);
  box-sizing: border-box;
}
.roi-field input:focus { outline: none; border-color: var(--dv-orange); }
.roi-field input::placeholder { color: var(--text-muted); }

/* Advanced assumptions toggle */
.roi-advanced { margin-top: var(--space-4); border-top: 1px solid var(--border-light); padding-top: var(--space-3); }
.roi-advanced__toggle {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; background: none; border: none; cursor: pointer;
  font-family: var(--font-body); font-size: var(--text-sm); font-weight: 600;
  color: var(--text-secondary); padding: 0;
}
.roi-advanced__toggle svg { width: 16px; height: 16px; transition: transform var(--transition-base); color: var(--text-muted); }
.roi-advanced__toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.roi-advanced__panel { display: none; padding-top: var(--space-3); }
.roi-advanced__panel.open { display: block; }
.roi-advanced__note { font-size: var(--text-xs); color: var(--text-muted); font-style: italic; margin-bottom: var(--space-3); line-height: 1.5; }
.roi-assumption-field { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-2); gap: var(--space-2); }
.roi-assumption-field label { font-size: var(--text-xs); color: var(--text-secondary); flex: 1; }
.roi-assumption-field input { width: 72px; padding: 6px 10px; flex-shrink: 0; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-card); color: var(--text-primary); font-size: var(--text-sm); font-family: var(--font-body); text-align: right; }
.roi-assumption-field input:focus { outline: none; border-color: var(--dv-orange); }
.roi-assumption-field .roi-pct { font-size: var(--text-xs); color: var(--text-muted); flex-shrink: 0; }

/* Results section */
.roi-results { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5); position: sticky; top: calc(var(--nav-height, 72px) + 16px); }
.roi-results__label { font-size: var(--text-xs); font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--space-4); display: block; }
.roi-table { width: 100%; border-collapse: collapse; }
.roi-table th { font-size: var(--text-xs); font-weight: 600; color: var(--text-muted); text-align: left; padding-bottom: var(--space-2); border-bottom: 1px solid var(--border-light); }
.roi-table th:not(:first-child) { text-align: right; }
.roi-table td { font-size: var(--text-sm); color: var(--text-secondary); padding: 10px 0; border-bottom: 1px solid var(--border-light); vertical-align: top; }
.roi-table td:not(:first-child) { text-align: right; font-variant-numeric: tabular-nums; }
.roi-table tr.roi-total td { font-weight: 700; color: var(--text-primary); border-bottom: none; border-top: 2px solid var(--border); padding-top: 14px; }
.roi-savings-val { color: var(--dv-teal); font-weight: 600; }
.roi-total .roi-savings-val { color: var(--dv-teal); font-size: var(--text-base); }

/* Summary block */
.roi-summary {
  margin-top: var(--space-4); padding: var(--space-4);
  background: var(--dv-orange-dim); border: 1px solid var(--dv-orange-dim);
  border-radius: var(--radius-md);
}
.roi-summary__row { display: flex; justify-content: space-between; align-items: baseline; }
.roi-summary__row + .roi-summary__row { margin-top: var(--space-2); padding-top: var(--space-2); border-top: 1px solid var(--dv-orange-dim); }
.roi-summary__key { font-size: var(--text-sm); color: var(--text-secondary); }
.roi-summary__val { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 800; color: var(--dv-orange); }
.roi-summary__3yr .roi-summary__val { font-size: var(--text-lg); }

/* ── S3: Methodology Note ── */
.roi-method { padding: var(--space-6) 0; border-top: 1px solid var(--border-light); }
.roi-method__toggle {
  display: flex; align-items: center; gap: var(--space-1);
  background: none; border: none; cursor: pointer;
  font-family: var(--font-body); font-size: var(--text-sm); font-weight: 600;
  color: var(--text-muted); padding: 0;
}
.roi-method__toggle svg { width: 16px; height: 16px; transition: transform var(--transition-base); }
.roi-method__toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.roi-method__body { display: none; max-width: 720px; padding-top: var(--space-4); }
.roi-method__body.open { display: block; }
.roi-method__body p { font-size: var(--text-sm); color: var(--text-secondary); line-height: 1.7; margin-bottom: var(--space-3); }
.roi-method__body strong { color: var(--text-primary); }

/* ── S4: CTA (always-dark) ── */
.roi-cta { background: var(--bg-hero); padding: var(--space-10) 0; text-align: center; }
.roi-cta .eyebrow { color: var(--dv-orange); }
.roi-cta__savings {
  font-family: var(--font-display); font-size: clamp(32px, 5vw, 64px); font-weight: 800;
  color: var(--dv-orange); margin: var(--space-3) 0 var(--space-2);
  letter-spacing: -0.02em; line-height: 1;
}
.roi-cta__savings-label { font-size: var(--text-sm); color: var(--text-hero-mute); margin-bottom: var(--space-6); }
.roi-cta h2 { color: var(--text-hero-color); max-width: 560px; margin: 0 auto var(--space-3); }
.roi-cta__body { font-size: var(--text-base); color: var(--text-hero-dim); max-width: 600px; margin: 0 auto var(--space-6); line-height: 1.65; }
.roi-cta__actions { display: flex; justify-content: center; gap: var(--space-4); flex-wrap: wrap; }

/* ── S5: FAQ ── */
.roi-faq { padding: var(--space-8) 0; background: var(--bg-surface); }
.roi-faq__list { max-width: 720px; margin: var(--space-6) auto 0; }

/* Table scroll wrapper (mobile) */
.roi-table-wrap { overflow-x: auto; }
/* Modeled benchmark note in net panel */
.roi-results__bench-note { margin-bottom: var(--space-3); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .roi-calc__grid { grid-template-columns: 1fr; }
  .roi-results { position: static; }
}
@media (max-width: 640px) {
  .roi-tabs { max-width: 100%; }
  .roi-cta__actions { flex-direction: column; align-items: center; }
  .roi-table { font-size: var(--text-xs); }
  .roi-table th, .roi-table td { padding: 8px 0; }
}