/* ========================================
   CodeNotes - Responsive Design
   移动端适配与断点处理
   ======================================== */

/* 平板端 (1024px以下) */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 280px;
  }

  .container {
    gap: 1.5rem;
  }

  .search-input {
    width: 180px;
  }

  .search-input:focus {
    width: 200px;
  }
}

/* 移动端 (768px以下) */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .header-container {
    padding: 0 1rem;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-card);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    display: block;
  }

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

  .mobile-menu-btn {
    display: block;
    order: 2;
    margin-left: 1rem;
  }

  .search-box {
    order: 1;
    margin-left: auto;
  }

  .search-input {
    width: 140px;
    padding: 0.5rem 2rem 0.5rem 0.75rem;
  }

  .theme-toggle {
    order: 3;
    margin-left: 0.5rem;
    width: 40px;
    height: 40px;
  }

  .container {
    grid-template-columns: 1fr;
    padding: 0 1rem;
  }

  .sidebar {
    position: static;
    order: 2;
  }

  .main-content {
    order: 1;
  }

  .post-title {
    font-size: 1.25rem;
  }

  .post-card {
    padding: 1.25rem;
  }

  .pagination {
    gap: 0.25rem;
  }

  .page-btn {
    min-width: 36px;
    height: 36px;
    font-size: 0.85rem;
  }

  /* 时间轴移动端优化 */
  .timeline {
    padding-left: 1.5rem;
  }

  .timeline-item {
    padding-left: 1rem;
  }

  /* 友链网格移动端 */
  .friends-grid {
    grid-template-columns: 1fr !important;
  }
}

/* 小屏手机 (480px以下) */
@media (max-width: 480px) {
  .logo-text {
    display: none;
  }

  .search-input {
    width: 120px;
  }

  .post-meta {
    font-size: 0.8rem;
    gap: 0.75rem;
  }

  .widget {
    padding: 1.25rem;
  }

  .ad-banner-content {
    height: 100px;
  }
}

/* 打印样式 */
@media print {
  .header, .sidebar, .footer, .ad-banner, .theme-toggle {
    display: none !important;
  }

  .main-wrapper {
    margin-top: 0;
  }

  .container {
    grid-template-columns: 1fr;
    max-width: 100%;
  }

  .post-card {
    break-inside: avoid;
    border: 1px solid #ddd;
    box-shadow: none;
  }
}