/* ═══════════════════════════════════════
   Responsive — Theme Coder
   ═══════════════════════════════════════ */

@media (max-width: 1024px) {
  .post-body-wrapper {
    flex-direction: column;
  }

  .toc-sidebar {
    width: 100%;
    order: -1;
    border-bottom: var(--border);
    padding-bottom: var(--space-lg);
    margin-bottom: var(--space-lg);
  }

  .toc-sidebar.sticky {
    position: relative;
    top: auto;
    max-height: none;
  }

  .toc-nav a {
    display: inline-block;
    padding: 4px 10px;
    border-left: none;
    border-radius: var(--radius-sm);
  }

  .toc-nav a:hover,
  .toc-nav a.active {
    background: var(--c-bg-secondary);
    border-left: none;
  }
}

@media (max-width: 768px) {
  :root {
    --space-lg: 1.25rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --gap: 1.5rem;
  }

  .main {
    padding: var(--space-lg);
    padding-top: calc(var(--header-height) + var(--space-lg));
  }

  /* ─── Mobile Nav ─── */
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--c-bg);
    border-bottom: var(--border);
    flex-direction: column;
    padding: var(--space-md) var(--space-lg);
    gap: 0;
  }

  .site-nav.open {
    display: flex;
  }

  .nav-link {
    padding: var(--space-sm) 0;
    font-size: 0.9rem;
  }

  .nav-link::after { display: none; }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  /* ─── Hero ─── */
  .hero-logo {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 1.5rem;
  }

  /* ─── Post ─── */
  .post-title {
    font-size: 1.6rem;
  }

  .post-card-meta {
    gap: var(--space-sm);
  }

  .post-nav {
    grid-template-columns: 1fr;
  }

  /* ─── Footer ─── */
  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-md);
  }

  .footer-copy,
  .footer-icp {
    text-align: center;
  }

  /* ─── Code ─── */
  .highlight pre {
    font-size: 0.8rem;
    padding: var(--space-sm);
  }

  .highlight .gutter {
    width: 2.5em;
    padding-right: var(--space-sm);
  }

  /* ─── Archive ─── */
  .archive-item {
    flex-wrap: wrap;
  }

  .archive-title {
    min-width: 0;
  }
}

@media (max-width: 480px) {
  .hero-logo {
    font-size: 1.6rem;
  }

  .post-title {
    font-size: 1.35rem;
  }

  .post-card-title {
    font-size: 1rem;
  }

  .tag {
    font-size: 0.65rem;
    padding: 2px 8px;
  }

  .pagination {
    gap: var(--space-xs);
    padding: var(--space-md) 0;
  }

  .page-btn {
    font-size: 0.7rem;
    padding: var(--space-xs) var(--space-sm);
    max-width: 80px;
  }

  .page-info {
    font-size: 0.65rem;
    padding: 0;
  }
}

/* ─── Print ─── */
@media print {
  .site-header,
  .site-footer,
  .toc-sidebar,
  .reading-progress,
  .theme-toggle,
  .nav-toggle,
  .post-nav,
  .comments-section,
  .social-link {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .main {
    max-width: 100%;
    padding: 0;
  }

  .post-content {
    font-size: 11pt;
    line-height: 1.6;
  }

  .post-content a {
    color: #000;
    text-decoration: underline;
  }

  .highlight {
    border: 1px solid #ccc;
  }
}