:root {
      --clr-bg: #f0f4f8;
      --clr-card: #ffffff;
      --clr-primary: #4f46e5;      /* Indigo */
      --clr-secondary: #10b981;    /* Emerald */
      --clr-accent: #f59e0b;       /* Amber */
      --clr-text: #374151;
      --clr-muted: #6b7280;
      --radius: 0.5rem;
      --shadow: 0 4px 12px rgba(0,0,0,0.05);
    }

    *, *::before, *::after { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: 'Inter', sans-serif;
      background: var(--clr-bg);
      color: var(--clr-text);
      line-height: 1.6;
      padding: 2rem;
    }

    h1 {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 1rem;
      text-align: center;
      color: var(--clr-primary);
    }

    .filter-bar {
      max-width: 400px;
      margin: 0 auto 2rem;
      display: flex;
      justify-content: flex-end;
    }
    .filter-bar select {
      padding: 0.6rem 1rem;
      border: 1px solid var(--clr-muted);
      border-radius: var(--radius);
      font-size: 1rem;
      color: var(--clr-text);
      background: #fff;
      transition: border-color .2s;
    }
    .filter-bar select:focus {
      outline: none;
      border-color: var(--clr-primary);
    }

    .courses-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: 22% 22% 22% 22%;
    justify-content: center;
	}	
    .course-card {
      background: var(--clr-card);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      transition: transform .3s, box-shadow .3s;
    }
    .course-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    }
    .course-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .card-content {
      padding: 1.5rem;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .course-title {
      font-size: 1.25rem;
      font-weight: 600;
      margin-bottom: 0.75rem;
      color: var(--clr-text);
    }
    .course-meta {
      font-size: 0.9rem;
      margin-bottom: 1rem;
      color: var(--clr-muted);
    }
    .course-details {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1rem;
      font-size: 0.95rem;
    }
    .course-duration {
      display: flex;
      align-items: center;
    }
    .course-duration::before {
      content: "⏱️";
      margin-right: 0.3rem;
    }
    .course-price {
      font-weight: 700;
      color: var(--clr-primary);
    }

    .level-badge {
      padding: 0.4rem 0.8rem;
      border-radius: var(--radius);
      font-size: 0.75rem;
      font-weight: 600;
      text-transform: uppercase;
      align-self: flex-start;
    }
    .badge-beginner   { background: rgba(16,185,129,0.1); color: var(--clr-secondary); }
    .badge-intermediate { background: rgba(254,109,104,0.1); color: #fe6d68; }
    .badge-advanced   { background: rgba(79,70,229,0.1); color: var(--clr-primary); }

    .pagination {
      margin-top: 3rem;
      text-align: center;
    }
    .pagination a {
      margin: 0 0.4rem;
      padding: 0.6rem 1rem;
      border: 1px solid var(--clr-muted);
      border-radius: var(--radius);
      text-decoration: none;
      color: var(--clr-text);
      transition: background .2s, color .2s, border-color .2s;
    }
	.pagination span {
      margin: 0 0.4rem;
      padding: 0.6rem 1rem;
      border: 1px solid var(--clr-muted);
      border-radius: var(--radius);
      text-decoration: none;
      transition: background .2s, color .2s, border-color .2s;
    }
    .pagination a.active,
    .pagination a:hover {
      background: var(--clr-primary);
      border-color: var(--clr-primary);
      color: #fff;
    }

	#ajax-pagination ul.page-numbers{
		display:flex;
		justify-content:center;
	}
	.page-numbers li::marker {
		content: "";
	}
    @media (max-width: 640px) {
      .courses-grid { grid-template-columns: 1fr; }
      body { padding: 1rem; }
    }