/* ═══════════════════════════════════════════════════════════════════
   Helios GCS — Features Page Styles
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Features Hero ─────────────────────────────────────────────── */

.features-hero {
  padding: 120px 24px 48px;
  text-align: center;
}

.features-hero h1 {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.features-hero p {
  font-size: 18px;
  color: var(--text-tertiary);
  max-width: 520px;
  margin: 0 auto;
}

/* ─── Feature Detail Grid ───────────────────────────────────────── */

.feature-details-section {
  border-top: 1px solid var(--border);
}

.feature-details-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
}

.feature-detail-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.feature-detail-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.feature-detail-card > p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.feature-detail-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.feature-detail-list li {
  font-size: 13px;
  color: var(--text-tertiary);
  padding-left: 18px;
  position: relative;
  line-height: 1.45;
}

.feature-detail-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.4;
}

/* ─── What's Different ──────────────────────────────────────────── */

.comparison-section {
  padding-top: 64px;
  padding-bottom: 48px;
  border-top: 1px solid var(--border);
}

.comparison-intro {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.65;
  margin-bottom: 32px;
}

.differentiators-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.diff-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
}

.diff-icon {
  color: var(--accent);
  margin-bottom: 12px;
}

.diff-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.diff-card p {
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 1.55;
  margin: 0 0 10px;
}

.diff-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(88, 166, 255, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
}

.shared-foundation {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
}

.shared-foundation h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.shared-foundation p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ─── Community ─────────────────────────────────────────────────── */

.community-section {
  padding: 64px 24px;
  border-top: 1px solid var(--border);
  background: var(--surface-dim);
  text-align: center;
}

.community-section .section-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.community-inner {
  max-width: 640px;
  margin: 0 auto;
}

.community-inner p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.community-inner p:last-child {
  margin-bottom: 0;
}

/* ─── CTA ───────────────────────────────────────────────────────── */

.features-cta {
  text-align: center;
  padding: 64px 24px;
  border-top: 1px solid var(--border);
}

.features-cta h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.features-cta p {
  font-size: 16px;
  color: var(--text-tertiary);
  margin-bottom: 28px;
}

/* ─── Mobile ────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .features-hero { padding: 100px 24px 32px; }
  .features-hero h1 { font-size: 30px; }
  .feature-details-grid { grid-template-columns: 1fr; }
  .differentiators-grid { grid-template-columns: 1fr; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .differentiators-grid { grid-template-columns: repeat(2, 1fr); }
}