/* ─────────────────────────────────────────
   Operatio — ROI Calculator page styles
   Extends theme.css tokens, never overrides
   ───────────────────────────────────────── */

/* ── Page Layout ── */
.roi-page { padding-top: 80px; }

/* ── Hero ── */
.roi-hero {
  position: relative;
  padding: 80px 40px 60px;
  overflow: hidden;
  text-align: center;
}

.roi-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(245, 158, 11, 0.07) 0%, transparent 70%);
  pointer-events: none;
}

.roi-hero-inner {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
}

.roi-eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.roi-headline {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 20px;
}

.roi-lede {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.75;
  max-width: 560px;
  margin: 0 auto;
}

/* ── Calculator Layout ── */
.roi-section {
  padding: 20px 40px 80px;
}

.roi-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

/* ── Inputs Panel ── */
.roi-inputs {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px 32px;
}

.roi-inputs-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 28px;
}

.roi-input-group {
  margin-bottom: 28px;
}

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

.roi-input-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}

.roi-input-label span {
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--fg);
  letter-spacing: -0.01em;
}

.roi-input-value {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  color: var(--accent);
  letter-spacing: -0.02em;
  min-width: 80px;
  text-align: right;
}

.roi-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  transition: background 0.2s;
}

.roi-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
  transition: box-shadow 0.2s;
}

.roi-slider::-webkit-slider-thumb:hover {
  box-shadow: 0 0 0 5px rgba(245, 158, 11, 0.2);
}

.roi-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

.roi-slider-hints {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
}

.roi-slider-hints span {
  font-size: 0.7rem;
  color: var(--fg-muted);
}

/* ── Outputs Panel ── */
.roi-outputs {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: sticky;
  top: 100px;
}

/* Big headline number */
.roi-headline-number {
  background: linear-gradient(160deg, rgba(245,158,11,0.1) 0%, var(--surface) 60%);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: 20px;
  padding: 36px 32px;
  text-align: center;
  box-shadow: 0 0 0 1px rgba(245, 158, 11, 0.1), 0 20px 60px rgba(0,0,0,0.3);
}

.roi-headline-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 12px;
}

.roi-big-number {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2.6rem, 5vw, 3.6rem);
  letter-spacing: -0.04em;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
  transition: all 0.3s ease;
}

.roi-big-label {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* Metric cards row */
.roi-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.roi-metric-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 20px;
  transition: border-color 0.2s;
}

.roi-metric-card:hover {
  border-color: rgba(245, 158, 11, 0.25);
}

.roi-metric-value {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  color: var(--fg);
  line-height: 1;
  margin-bottom: 6px;
  transition: all 0.3s ease;
}

.roi-metric-label {
  font-size: 0.75rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

/* Tier recommendation */
.roi-tier-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 24px;
}

.roi-tier-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.roi-tier-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.roi-tier-badge {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 100px;
  transition: all 0.3s ease;
}

.roi-tier-name {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 4px;
  transition: all 0.3s ease;
}

.roi-tier-price {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-bottom: 12px;
  transition: all 0.3s ease;
}

.roi-net-savings {
  background: rgba(245, 158, 11, 0.07);
  border: 1px solid rgba(245, 158, 11, 0.15);
  border-radius: 10px;
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.roi-net-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.roi-net-value {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--accent);
  transition: all 0.3s ease;
}

/* CTAs */
.roi-ctas {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.roi-cta-primary {
  display: block;
  text-align: center;
  background: var(--accent);
  color: #0D1117;
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 16px 24px;
  border-radius: 12px;
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: background 0.2s, transform 0.15s;
}

.roi-cta-primary:hover {
  background: #FBBF24;
  transform: translateY(-1px);
}

.roi-cta-secondary {
  display: block;
  text-align: center;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--fg);
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.875rem;
  padding: 14px 24px;
  border-radius: 10px;
  text-decoration: none;
  transition: all 0.2s;
  letter-spacing: -0.01em;
}

.roi-cta-secondary:hover {
  border-color: rgba(245, 158, 11, 0.4);
  color: var(--accent);
}

/* Footnote */
.roi-footnote {
  text-align: center;
  font-size: 0.75rem;
  color: var(--fg-muted);
  padding: 0 40px 48px;
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.6;
  opacity: 0.7;
}

/* Animated value change flash */
@keyframes flash-accent {
  0%   { color: var(--accent); }
  50%  { color: #FBBF24; }
  100% { color: var(--accent); }
}

.roi-big-number.updated,
.roi-metric-value.updated,
.roi-net-value.updated {
  animation: flash-accent 0.4s ease;
}

/* ── Responsive ── */
@media (max-width: 960px) {
  .roi-inner {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }

  .roi-outputs {
    position: static;
  }
}

@media (max-width: 600px) {
  .roi-hero,
  .roi-section { padding-left: 24px; padding-right: 24px; }
  .roi-inputs { padding: 28px 20px; }
  .roi-metrics { grid-template-columns: 1fr; }
  .roi-headline-number,
  .roi-tier-card { padding: 24px 20px; }
}