/* ================================================================
   Comparisons — Grid, cards, calculation tooltip
   ================================================================ */

.comparisons-section { margin-top: 16px; animation: fadeIn 1s ease-out 1.7s both; }

.comparisons-container {
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease, overflow 0s 0.6s;
}

.comparisons-container.open {
  max-height: 1200px; opacity: 1; overflow: visible;
  transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease, overflow 0s 0s;
}

.comparisons-grid {
  display: grid; grid-template-columns: 1fr;
  gap: 8px; padding: 20px 0 8px;
  max-width: 700px; margin: 0 auto;
}

.comparison-card {
  background: rgba(255,255,255,0.01);
  border: 1px solid rgba(163,107,255,0.06);
  border-radius: 4px; padding: 14px 16px;
  transition: all 0.4s ease; position: relative;
}

.comparison-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, rgba(163,107,255,0.2), rgba(163,107,255,0.05));
  border-radius: 1px; transition: background 0.3s ease;
}

.comparison-card:hover {
  border-color: rgba(163,107,255,0.15);
  background: rgba(163,107,255,0.02);
}

.comparison-card:hover::before {
  background: linear-gradient(180deg, rgba(163,107,255,0.5), rgba(163,107,255,0.1));
}

.comparison-value {
  font-size: clamp(16px, 3.5vw, 22px); font-weight: 700;
  color: var(--accent); line-height: 1.2; margin-bottom: 4px;
  letter-spacing: -0.02em; font-variant-numeric: tabular-nums;
  position: relative; display: inline-block; cursor: help;
}

.comparison-desc {
  font-size: clamp(8px, 1.8vw, 10px); color: var(--text-faint);
  line-height: 1.5; letter-spacing: 0.03em;
}

/* ── Calculation Tooltip ────────────────────────────────────────── */
.calc-tooltip {
  position: absolute; top: calc(100% + 4px); left: 0;
  background: rgba(20,14,32,0.97); border: 1px solid var(--purple-glow);
  border-radius: 8px; padding: 12px 16px;
  min-width: 220px; max-width: 320px;
  opacity: 0; visibility: hidden; z-index: 200; pointer-events: none;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 15px rgba(163,107,255,0.1);
  backdrop-filter: blur(12px);
  transition: opacity 0.15s ease, visibility 0.15s ease;
}

.calc-tooltip::after {
  content: ''; position: absolute; bottom: 100%; left: 0;
  width: 100%; height: 12px; background: transparent;
}

.calc-tooltip::before {
  content: ''; position: absolute; bottom: calc(100% - 1px); left: 24px;
  border: 7px solid transparent; border-bottom: 8px solid var(--purple-glow);
  border-top: 0; z-index: 1;
}

.calc-tooltip.visible { opacity: 1; visibility: visible; pointer-events: auto; }
.comparison-value:focus .calc-tooltip { opacity: 1; visibility: visible; pointer-events: auto; }

.calc-tooltip-title {
  font-size: 9px; font-weight: 600;
  color: rgba(163,107,255,0.7); text-transform: uppercase;
  letter-spacing: 0.12em; margin-bottom: 8px;
  display: flex; align-items: center; gap: 5px;
}

.calc-tooltip-title svg { width: 10px; height: 10px; opacity: 0.6; }

.calc-tooltip-formula {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: 10px; color: rgba(230,238,248,0.7);
  line-height: 1.8; white-space: pre-wrap; word-break: break-word;
}

.calc-tooltip-formula .calc-result {
  display: block; margin-top: 6px; padding-top: 6px;
  border-top: 1px solid rgba(163,107,255,0.15);
  color: var(--accent); font-weight: 700; font-size: 11px;
}