/* ================================================================
   Feature Deep-Dive Pages — Mobile-First
   ================================================================ */

/* --- Hero --- */
.feature-hero {
  padding: 100px 16px 40px;
  text-align: center;
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  color: var(--text-white);
}

.feature-hero h1 {
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: 12px;
}

.feature-hero .hero-subtitle {
  font-size: 1.1rem;
  opacity: 0.85;
  max-width: 600px;
  margin: 0 auto 24px;
}

/* --- Benefits grid --- */
.benefits-section {
  padding: 48px 16px;
}

.benefits-section h2 {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 32px;
}

.benefits-grid {
  display: grid;
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.benefit-card {
  background: var(--color-surface);
  border: 1px solid var(--border-color-light);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  text-align: center;
}

.benefit-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.benefit-card h3 {
  font-size: 1.1rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: 8px;
}

.benefit-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- How it works (steps) --- */
.how-section {
  padding: 48px 16px;
  background: var(--color-gray-50);
}

.how-section h2 {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 32px;
}

.steps-list {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: var(--color-primary-on-dark);
  font-weight: var(--font-weight-bold);
  font-size: 1.1rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-item h3 {
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: 4px;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Desktop --- */
@media (min-width: 768px) {
  .feature-hero h1 {
    font-size: 2.5rem;
  }

  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .feature-hero {
    padding: 120px 24px 60px;
  }

  .feature-hero h1 {
    font-size: 3rem;
  }

  .benefits-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}