/* ============================================================
   CiCC Platform v4.0.0 — ARCHIVE COURSE (VIP PRO)
   Glassmorphism filter, card hover, dual-mode.
   ============================================================ */

.courses-archive {
  --ca-accent: #3b82f6;
  --ca-grad: linear-gradient(135deg, #3b82f6 0%, #2563eb 50%, #1d4ed8 100%);
}

/* Page header reuse — override gradient warmer */
.page-header {
  position: relative; padding: calc(var(--header-height, 80px) + 48px) 0 60px;
  text-align: center; overflow: hidden;
  background: linear-gradient(135deg, #1a237e 0%, #2563eb 50%, #1e40af 100%); color: #fff;
}
.page-header .section-tag { background: rgba(255,255,255,.15); color: #fff; }
.page-header h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; color: #fff; text-shadow: 0 4px 14px rgba(0,0,0,.4); }
.page-header p { color: rgba(255,255,255,.85); font-size: 18px; margin-top: var(--space-sm); }

/* Filter bar — glassmorphism */
.archive-filters .filter-chips {
  display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 32px;
}
.archive-filters .chip {
  padding: 10px 24px; border-radius: 9999px; border: 1px solid var(--border-color);
  background: var(--bg-card); color: var(--text-secondary); font-weight: 600; font-size: 14px;
  cursor: pointer; transition: all .25s ease; backdrop-filter: blur(8px);
}
.archive-filters .chip:hover { border-color: var(--ca-accent); color: var(--ca-accent); }
.archive-filters .chip.active, .archive-filters .chip:hover.bg-primary {
  background: var(--ca-grad); color: #fff; border-color: transparent;
}

.archive-filters .filter-group { margin-bottom: 16px; }
.archive-filters .filter-group label {
  display: block; font-size: 13px; font-weight: 700; color: var(--text-secondary); margin-bottom: 8px; text-align: center;
}

/* Courses grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.course-card {
  display: flex; flex-direction: column; height: 100%;
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: 18px; overflow: hidden;
  transition: transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s ease, border-color .3s;
}
.course-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 60px -20px rgba(59,130,246,.45);
  border-color: transparent;
}
.course-card.level-enterprise:hover { box-shadow: 0 30px 60px -20px rgba(168,85,230,.5); }
.course-thumb { display: block; overflow: hidden; aspect-ratio: 16/10; }
.course-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.course-card:hover .course-thumb img { transform: scale(1.06); }
.course-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.course-level-badge {
  display: inline-block; align-self: flex-start; padding: 5px 14px; border-radius: 9999px;
  font-size: 12px; font-weight: 700; margin-bottom: 12px;
  background: var(--ca-grad); color: #fff;
}
.course-body h3 { font-size: 20px; font-weight: 700; margin: 0 0 10px; line-height: 1.3; }
.course-body h3 a { color: var(--text-primary); text-decoration: none; transition: color .2s; }
.course-body h3 a:hover { color: var(--ca-accent); }
.course-body p { color: var(--text-secondary); font-size: 14px; line-height: 1.6; margin: 0 0 14px; flex: 1; }
.course-details { display: flex; gap: 12px; flex-wrap: wrap; margin-top: auto; font-size: 13px; }
.cd-item { display: inline-flex; align-items: center; gap: 5px; color: var(--text-secondary); }
.cd-item svg { color: var(--ca-accent); }
.cd-price { font-weight: 800; color: var(--ca-accent); }

/* Related eco — reuse card style */
.cicc-related-ecosystem { margin-top: 56px; text-align: center; }
.cicc-related-ecosystem h4 { font-size: 20px; font-weight: 700; color: var(--text-primary); margin-top: 0; }
.cicc-related-ecosystem p { color: var(--text-secondary); margin: 0 0 16px; }

/* Pagination */
.posts-pagination { justify-content: center; margin-top: 40px; }
.posts-pagination a, .posts-pagination span {
  padding: 10px 20px; border-radius: 10px; font-weight: 500; text-decoration: none;
  background: var(--bg-card); border: 1px solid var(--border-color); color: var(--text-secondary);
  transition: all .2s;
}
.posts-pagination a:hover { background: var(--ca-accent); color: #fff; border-color: var(--ca-accent); }
.posts-pagination .current { background: var(--ca-grad); color: #fff; border-color: transparent; }

/* Responsive */
@media (max-width: 768px) {
  .courses-grid { grid-template-columns: 1fr; }
  .course-body h3 { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  .course-card, .course-thumb img { transition: none !important; }
  .course-card:hover { transform: none; }
}