/* ==========================================================================
   OddsLab Features Page Stylesheet
   ========================================================================== */

.features-hero {
  padding-top: 60px;
  padding-bottom: 48px;
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

.features-hero-inner {
  max-width: 840px;
  margin: 0 auto;
}

.feature-anchor-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.feature-anchor-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--ease-fast);
}

.feature-anchor-link:hover {
  background: var(--bg-panel);
  border-color: var(--brand-primary);
  color: var(--text-pure);
}

/* Feature Deep-Dive Split Layouts */
.feature-showcase-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding-block: 80px;
  border-bottom: 1px solid var(--border-subtle);
}

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

.feature-showcase-row.reversed {
  direction: rtl;
}

.feature-showcase-row.reversed > * {
  direction: ltr;
}

.feature-detail-content {
  display: flex;
  flex-direction: column;
}

.feature-detail-content h2 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--text-pure);
  margin-bottom: 18px;
}

.feature-detail-content p {
  font-size: 15.5px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.feature-checklist {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
}

.feature-check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.5;
}

.feature-check-item svg {
  color: var(--accent-edge);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Visual Mock Panels */
.feature-mock-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.feature-mock-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 20px;
}

.feature-mock-panel-head h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-pure);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 4 Mathematical Pillars Grid */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.pillar-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--ease-fast);
}

.pillar-card:hover {
  border-color: var(--border-brand);
}

.pillar-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--brand-dim);
  border: 1px solid var(--border-brand);
  color: var(--brand-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.pillar-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-pure);
  margin-bottom: 10px;
}

.pillar-desc {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 992px) {
  .feature-showcase-row {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-block: 56px;
  }
  .feature-showcase-row.reversed {
    direction: ltr;
  }
  .pillars-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .pillars-grid {
    grid-template-columns: 1fr;
  }
  .feature-detail-content h2 {
    font-size: 26px;
  }
}