/* ==========================================================================
   COMPARATOR & CALCULATOR STYLES
   SRAM AXS vs SHIMANO Di2 Interactive Matrix & Gear Inches Tool
   ========================================================================== */

.comparator-wrapper {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--card-shadow);
  margin-bottom: 3.5rem;
}

/* Tier Selector Controls */
.tier-tabs-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-surface-elevated);
  padding: 6px;
  border-radius: var(--radius-full);
  max-width: 620px;
  margin: 0 auto 2.5rem;
  border: 1px solid var(--border-color);
}

.tier-tab-btn {
  flex: 1;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
  text-align: center;
  transition: var(--transition-smooth);
}

.tier-tab-btn:hover {
  color: var(--text-main);
}

.tier-tab-btn.active {
  background-color: var(--bg-surface);
  color: var(--text-main);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* Dual Side-by-Side Comparison Grid */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  position: relative;
}

.compare-card {
  background-color: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  position: relative;
  transition: var(--transition-smooth);
}

.compare-card.sram-card {
  border-top: 4px solid var(--accent-sram);
}

.compare-card.shimano-card {
  border-top: 4px solid var(--accent-shimano);
}

.brand-badge-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.group-name {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.group-tagline {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
}

.spec-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1.5rem 0;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--border-color);
  font-size: 0.92rem;
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-label {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.spec-value {
  font-weight: 700;
  color: var(--text-main);
  font-family: var(--font-mono);
}

.pro-con-box {
  background-color: var(--bg-surface);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-top: 1.25rem;
  border: 1px solid var(--border-color);
}

.pro-con-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.pro-con-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.pro-con-list li {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   GEAR RATIO CALCULATOR TOOL
   ========================================================================== */

.calculator-card {
  background: linear-gradient(135deg, var(--bg-surface), var(--bg-surface-elevated));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--card-shadow);
  margin-top: 3.5rem;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: center;
}

.calc-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.calc-field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.calc-field select, .calc-field input {
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: var(--bg-body);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition-smooth);
}

.calc-field select:focus, .calc-field input:focus {
  border-color: var(--accent-primary);
}

.calc-results-panel {
  background-color: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  text-align: center;
}

.calc-metric-highlight {
  font-size: 2.75rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--accent-primary);
  line-height: 1;
  margin: 0.5rem 0;
}

.calc-metric-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.calc-mini-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.mini-stat-val {
  font-size: 1.15rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-main);
}

.mini-stat-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
}