/* ============================================
   BITCOIN HOME MINING GUIDE — PILLAR PAGE
   D-Central Technologies
   @since 1.16.0
   ============================================ */

/* ── Page Wrapper ── */
.dc-guide {
  background: var(--dc-bg-primary);
  color: var(--dc-text-primary);
  padding-bottom: 0;
}

/* ── Two-Column Layout: TOC + Main ── */
.dc-guide__layout {
  display: flex;
  gap: 3rem;
  padding: 3rem 0 4rem;
  align-items: flex-start;
}

/* ── Sticky Table of Contents Sidebar ── */
.dc-guide__toc {
  position: sticky;
  top: 100px;
  width: 240px;
  min-width: 240px;
  flex-shrink: 0;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

.dc-guide__toc-nav {
  background: var(--dc-bg-elevated);
  border: 1px solid var(--dc-border-light);
  border-radius: var(--dc-radius-md);
  padding: 1.25rem;
}

.dc-guide__toc-title {
  font-family: var(--dc-font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--dc-text-secondary);
  margin: 0 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--dc-border-light);
}

.dc-guide__toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.dc-guide__toc-list li {
  margin: 0;
  padding: 0;
}

.dc-guide__toc-link {
  display: block;
  padding: 0.4rem 0.5rem;
  font-family: var(--dc-font-body);
  font-size: 0.85rem;
  color: var(--dc-text-secondary);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--dc-transition-fast), border-color var(--dc-transition-fast), background var(--dc-transition-fast);
  border-radius: 0 var(--dc-radius-sm) var(--dc-radius-sm) 0;
  line-height: 1.3;
}

.dc-guide__toc-link:hover {
  color: var(--dc-accent);
  border-left-color: rgba(255, 110, 0, 0.4);
  background: rgba(255, 110, 0, 0.04);
}

.dc-guide__toc-link--active {
  color: var(--dc-accent);
  border-left-color: var(--dc-accent);
  background: rgba(255, 110, 0, 0.08);
  font-weight: 600;
}

/* ── Main Content Area ── */
.dc-guide__main {
  flex: 1;
  min-width: 0;
  max-width: 800px;
}

/* ── Section Styling ── */
.dc-guide__section {
  margin-bottom: 3.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--dc-border-light);
}

.dc-guide__section:last-child {
  border-bottom: none;
  margin-bottom: 2rem;
}

.dc-guide__section h2 {
  font-family: var(--dc-font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--dc-text-primary);
  margin: 0 0 1.25rem;
  line-height: var(--dc-leading-tight);
  padding-top: 0.5rem;
}

.dc-guide__section h3 {
  font-family: var(--dc-font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dc-text-primary);
  margin: 2rem 0 0.75rem;
  line-height: var(--dc-leading-snug);
}

.dc-guide__section p {
  color: var(--dc-text-primary);
  font-size: 1rem;
  line-height: var(--dc-leading-relaxed);
  margin: 0 0 1rem;
}

.dc-guide__section p:last-child {
  margin-bottom: 0;
}

.dc-guide__section a {
  color: var(--dc-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--dc-transition-fast);
}

.dc-guide__section a:hover {
  color: var(--dc-accent-hover);
}

/* ── Info Box (orange left border callout) ── */
.dc-guide__info-box {
  background: rgba(255, 110, 0, 0.05);
  border-left: 3px solid var(--dc-accent);
  padding: 1rem 1.25rem;
  margin: 1.25rem 0;
  border-radius: 0 var(--dc-radius-sm) var(--dc-radius-sm) 0;
}

.dc-guide__info-box p {
  color: var(--dc-text-primary);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0;
}

.dc-guide__info-box p + p {
  margin-top: 0.5rem;
}

.dc-guide__info-box strong {
  color: var(--dc-accent);
  font-weight: 700;
}

/* ── Step Items ── */
.dc-guide__step {
  display: flex;
  gap: 1rem;
  margin: 1.5rem 0;
  padding: 1.25rem;
  background: var(--dc-bg-elevated);
  border: 1px solid var(--dc-border-light);
  border-radius: var(--dc-radius-md);
  transition: border-color var(--dc-transition-fast), box-shadow var(--dc-transition-fast);
}

.dc-guide__step:hover {
  border-color: rgba(255, 110, 0, 0.25);
  box-shadow: 0 0 15px rgba(255, 110, 0, 0.04);
}

.dc-guide__step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  min-width: 2.5rem;
  background: rgba(255, 110, 0, 0.1);
  border: 2px solid var(--dc-accent);
  border-radius: 50%;
  font-family: var(--dc-font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--dc-accent);
}

.dc-guide__step-content {
  flex: 1;
  min-width: 0;
}

.dc-guide__step-content h4 {
  font-family: var(--dc-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dc-text-primary);
  margin: 0 0 0.35rem;
  line-height: var(--dc-leading-snug);
}

.dc-guide__step-content p {
  color: var(--dc-text-secondary);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0;
}

/* ── CTA Grid (bottom of page) ── */
.dc-guide__cta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* ── Responsive ── */

/* Tablet: TOC shrinks */
@media (max-width: 1024px) {
  .dc-guide__layout {
    gap: 2rem;
  }

  .dc-guide__toc {
    width: 200px;
    min-width: 200px;
  }

  .dc-guide__toc-link {
    font-size: 0.8rem;
  }

  .dc-guide__cta-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile: TOC becomes horizontal strip, single column */
@media (max-width: 768px) {
  .dc-guide__layout {
    flex-direction: column;
    gap: 0;
    padding: 0 0 3rem;
  }

  .dc-guide__toc {
    position: relative;
    top: auto;
    width: 100%;
    min-width: 100%;
    max-height: none;
    overflow-y: visible;
    padding: 1rem 0;
    border-bottom: 1px solid var(--dc-border-light);
  }

  .dc-guide__toc-nav {
    background: var(--dc-bg-elevated);
    border: none;
    border-radius: 0;
    padding: 0.75rem 0;
  }

  .dc-guide__toc-title {
    padding: 0 1rem 0.5rem;
  }

  .dc-guide__toc-list {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 0.25rem;
    padding: 0 1rem;
    scrollbar-width: none;
  }

  .dc-guide__toc-list::-webkit-scrollbar {
    display: none;
  }

  .dc-guide__toc-list li {
    flex-shrink: 0;
  }

  .dc-guide__toc-link {
    border-left: none;
    border-bottom: 2px solid transparent;
    border-radius: var(--dc-radius-sm);
    padding: 0.35rem 0.75rem;
    white-space: nowrap;
    font-size: 0.8rem;
  }

  .dc-guide__toc-link:hover {
    border-left-color: transparent;
    border-bottom-color: rgba(255, 110, 0, 0.4);
  }

  .dc-guide__toc-link--active {
    border-left-color: transparent;
    border-bottom-color: var(--dc-accent);
  }

  .dc-guide__main {
    padding-top: 2rem;
    max-width: 100%;
  }

  .dc-guide__section h2 {
    font-size: 1.4rem;
  }

  .dc-guide__section h3 {
    font-size: 1.1rem;
  }

  .dc-guide__step {
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem;
  }

  .dc-guide__step-number {
    width: 2rem;
    height: 2rem;
    min-width: 2rem;
    font-size: 0.85rem;
  }

  .dc-guide__cta-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .dc-guide__section {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
  }

  .dc-guide__section h2 {
    font-size: 1.25rem;
  }

  .dc-guide__info-box {
    padding: 0.75rem 1rem;
  }
}