/* ============================================================
   CiCC Platform v4.0.0 — SINGLE COURSE (VIP PRO UI/UX)
   Glassmorphism hero, sticky sidebar, info grid, dual-mode safe.
   ============================================================ */

.course-single {
  --cr-accent: #10b981;   /* emerald */
  --cr-accent-2: #3b82f6; /* blue */
  --cr-grad: linear-gradient(135deg, #10b981 0%, #059669 45%, #3b82f6 100%);
}
[data-theme="dark"] .course-single {
  --cr-accent: #34d399;
}

/* Hero */
.course-hero {
  position: relative;
  padding: calc(var(--header-height, 80px) + 48px) 0 60px;
  overflow: hidden;
  min-height: 620px;
  display: flex;
  align-items: center;
}
.course-hero-bg {
  position: absolute; inset: 0; overflow: hidden; z-index: 0;
}
.course-hero-bg img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(0.55) scale(1.05);
}
.course-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(16,185,129,.55) 0%, rgba(5,150,105,.45) 60%, rgba(59,130,246,.35) 100%);
  z-index: 1;
}
.course-hero-grid {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: center;
}
.course-hero-badges { display: flex; gap: 10px; align-items: center; margin-bottom: 18px; flex-wrap: wrap; }
.course-tag { background: rgba(255,255,255,.15); color: #fff; backdrop-filter: blur(4px); }
.level-badge {
  padding: 6px 16px; border-radius: 9999px; font-size: 12px; font-weight: 700;
  background: rgba(255,255,255,.2); color: #fff; border: 1px solid rgba(255,255,255,.3);
}
.course-hero h1 {
  font-size: clamp(28px, 4vw, 44px); font-weight: 800; line-height: 1.15;
  color: #fff; margin: 0 0 16px;
  text-shadow: 0 4px 14px rgba(0,0,0,.35);
}
.course-start-date {
  display: inline-flex; align-items: center; gap: 8px; font-size: 15px;
  color: rgba(255,255,255,.9); font-weight: 500; text-shadow: 0 2px 6px rgba(0,0,0,.25);
}

/* Hero sticky sidebar */
.course-hero-sidebar .sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 28px;
  position: sticky;
  top: calc(var(--header-height,80px) + 32px);
  backdrop-filter: blur(12px); box-shadow: var(--shadow-card);
}
.sidebar-price { text-align: center; margin-bottom: 20px; }
.price-label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.price-amount { display: block; font-size: 36px; font-weight: 900; color: var(--primary); }
.sidebar-info { display: grid; gap: 14px; margin-bottom: 24px; }
.info-row {
  display: flex; align-items: center; gap: 12px; font-size: 15px; color: var(--text-secondary);
}
.info-row svg { color: var(--ph-accent, var(--primary)); flex: 0 0 auto; }
.sidebar-cta { display: flex; flex-direction: column; gap: 12px; }
.sidebar-cta .btn { width: 100%; }

/* Course content */
.course-content-section { padding-top: 0; }
.course-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
}
.course-main { max-width: 820px; }
.course-content h2, .course-content h3, .course-content h4 {
  font-size: clamp(20px, 2.5vw, 26px); font-weight: 700; margin: 32px 0 16px;
  color: var(--text-primary);
}
.course-content p { font-size: 16px; line-height: 1.8; color: var(--text-secondary); margin: 0 0 16px; }
.course-content ul, .course-content ol { padding-left: 24px; margin-bottom: 24px; }
.course-content li { font-size: 15px; line-height: 1.8; color: var(--text-secondary); margin-bottom: 6px; }
.course-content a { color: var(--primary); }
.course-content img, .course-content .wp-block-image img {
  width: 100%; height: auto; border-radius: 16px; margin: 24px 0; box-shadow: var(--shadow-card);
}
.course-sidebar { display: none; } /* sidebar now in hero */

/* Related eco */
.course-related-eco { margin-top: 48px; }
.eco-box {
  display: grid; grid-template-columns: auto 1fr auto; gap: 24px; align-items: center;
  padding: 32px; border-radius: 20px;
  background: var(--ph-glass, rgba(124,58,237,.06)); border: 1px solid var(--ph-border, rgba(124,58,237,.25));
}
.eco-box-icon { font-size: 40px; }
.eco-box-text h3 { font-size: 20px; font-weight: 700; margin: 0 0 6px; color: var(--text-primary); }
.eco-box-text p { font-size: 14px; color: var(--text-secondary); margin: 0; }
.eco-box-links { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
.eco-box-links a {
  padding: 10px 18px; border-radius: 10px; font-weight: 600; font-size: 14px;
  background: var(--bg-card); border: 1px solid var(--border-color); color: var(--text-primary);
  text-decoration: none; transition: all .2s;
}
.eco-box-links a:hover { border-color: var(--ph-border); color: var(--ph-accent); }

/* Course nav */
.course-nav { padding: 32px 0; }
.course-nav .btn { display: inline-flex; align-items: center; gap: 6px; }

/* Responsive */
@media (max-width: 992px) {
  .course-hero-grid { grid-template-columns: 1fr; }
  .course-layout { grid-template-columns: 1fr; }
  .course-hero { min-height: 560px; }
}
@media (max-width: 600px) {
  .course-hero { padding: calc(var(--header-height, 80px) + 32px) 0 40px; }
  .course-hero h1 { font-size: 28px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .eco-box { grid-template-columns: auto 1fr; text-align: left; }
  .eco-box-links { justify-content: flex-start; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .course-hero, .course-hero .sidebar-card, .eco-box-links a { transition: none !important; }
  .course-hero .sidebar-card:hover { transform: none; }
}
.cs-results-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-top: 20px;
}
.result-card {
  text-align: center; padding: 28px 18px;
  background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px;
  transition: transform .25s ease, box-shadow .25s;
}
.result-card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px -16px rgba(245,158,11,.4); }
.result-value { display: block; font-size: 32px; font-weight: 800; color: var(--cs-accent); line-height: 1.1; }
.result-label { display: block; font-size: 13px; color: var(--text-secondary); margin-top: 6px; text-transform: uppercase; letter-spacing: .5px; font-weight: 600; }

/* Testimonial */
.cs-testimonial {
  background: var(--bg-card); border-left: 4px solid var(--cs-accent);
  border-radius: 16px; padding: 32px; margin: 40px 0;
  box-shadow: var(--shadow-card); position: relative;
}
.cs-testimonial::before {
  content: """; font-size: 80px; font-weight: 800; line-height: 0.8;
  position: absolute; top: 8px; left: 20px; color: var(--cs-accent); opacity: .08;
  font-family: Georgia, serif;
}
.cs-testimonial blockquote {
  font-size: 18px; font-style: italic; line-height: 1.7; color: var(--text-primary);
  margin: 0; padding-left: 20px; border-left: none;
}

/* Content fallback (imported) */
.cs-content-imported h2, .cs-content-imported h3 {
  font-size: clamp(20px, 2.5vw, 26px); font-weight: 700; margin: 32px 0 16px; color: var(--text-primary);
}
.cs-content-imported p { font-size: 16px; line-height: 1.8; color: var(--text-secondary); margin-bottom: 16px; }

/* Related eco reuse */
.cs-related-eco { margin: 48px 0; }

/* CS nav */
.cs-nav { padding: 24px 0; }
.cs-nav .btn { display: inline-flex; align-items: center; gap: 6px; }

/* Responsive */
@media (max-width: 768px) {
  .cs-meta-bar { flex-direction: column; gap: 12px; text-align: center; }
  .cs-results-grid { grid-template-columns: 1fr; }
  .page-header.cs-header { padding: calc(var(--header-height, 80px) + 28px) 0 36px; }
  .cs-testimonial { padding: 24px 18px; }
  .cs-testimonial blockquote { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
/* === CROSS-LINK (shared with single-post) === */
.post-crosslink {
  margin: 40px 0 10px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(124,58,237,0.08), rgba(59,130,246,0.06));
  border: 1px solid rgba(124,58,237,0.16);
  padding: 26px;
  backdrop-filter: blur(10px);
}
.crosslink-inner { max-width: 1000px; margin: 0 auto; }
.crosslink-head { margin-bottom: 18px; }
.crosslink-badge {
  display: inline-block;
  font-size: 12px; font-weight: 700; letter-spacing: 0.05em;
  color: var(--primary);
  background: rgba(124,58,237,0.1);
  padding: 4px 12px; border-radius: 999px; margin-bottom: 8px;
}
.crosslink-head h3 { font-size: 1.4rem; font-weight: 800; color: var(--text-1); margin: 0; }
.crosslink-head p { color: var(--text-2); margin: 6px 0 0; font-size: 0.95rem; }
.crosslink-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 16px; }
.cross-card {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 16px; border-radius: 14px;
  background: var(--bg-1); border: 1px solid var(--border-1);
  text-decoration: none; color: var(--text-1);
  transition: transform .25s cubic-bezier(.34,1.56,.64,1), box-shadow .25s, border-color .25s;
}
.cross-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(124,58,237,0.18); border-color: rgba(124,58,237,0.35); }
.cross-icon {
  flex-shrink: 0; width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, #7c3aed, #a855f7); color: #fff;
}
.cross-icon svg { width: 22px; height: 22px; }
.cross-text h4 { margin: 0; font-size: 0.95rem; font-weight: 700; }
.cross-text p { margin: 2px 0 6px; font-size: 0.82rem; color: var(--text-2); }
.cross-cta { font-size: 0.8rem; font-weight: 600; color: var(--primary); }

@media (max-width: 768px) {
  .post-crosslink { padding: 18px; }
  .crosslink-grid { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .cross-card:hover { transform: none; }
}