/* ==========================================================================
   NCLI COURSES PAGE STYLESHEET (css/courses.css)
   Organized Section-by-Section for courses.php.
   Supports Dark/Light themes using CSS variables from global.css.
   ========================================================================== */

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  --border-color: #e2e8f0;
  --primary-light: hsl(221, 83%, 96%);
  
  --card-bg: #ffffff;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.06), 0 10px 10px -5px rgba(0,0,0,0.04);
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
}

body.dark {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --border-color: #1f2937;
  --primary-light: rgba(37, 99, 235, 0.15);
  
  --card-bg: #111827;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.2), 0 2px 4px -2px rgba(0,0,0,0.2);
  --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.3), 0 10px 10px -5px rgba(0,0,0,0.2);
}

/* ==========================================
   1. WHY JOIN / ADVANTAGES SECTION
   ========================================== */
.why-join-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.wj-card {
  background-color: var(--card-bg, var(--bg-primary));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.wj-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.wj-card i {
  font-size: 28px;
  color: var(--primary);
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  background-color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

body.dark .wj-card i {
  background-color: rgba(37, 99, 235, 0.15);
}

.wj-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.wj-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================
   2. COURSE DETAILS SECTION
   ========================================== */
.course-detail-card {
  background-color: var(--card-bg, var(--bg-primary));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: 48px;
  transition: var(--transition-smooth);
}

/* Header style with variable background colors */
.cdc-header {
  padding: 30px 40px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  background-color: transparent;
}

body.dark .cdc-header {
  background-color: transparent;
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.cdc-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

/* Force light cards with black text in dark mode as requested by user */
body.dark .course-detail-card,
body.dark .wj-card,
body.dark .coming-card {
  background: rgba(255, 255, 255, 0.85) !important;
  border-color: rgba(255, 255, 255, 1) !important;
}

body.dark .course-detail-card h2,
body.dark .course-detail-card h4,
body.dark .course-detail-card p,
body.dark .course-detail-card strong,
body.dark .course-detail-card .topic-item,
body.dark .wj-card h4,
body.dark .wj-card p,
body.dark .coming-card h4,
body.dark .coming-card p {
  color: #0f172a !important;
}

body.dark .cdc-info-item div span {
  color: #475569 !important;
}

body.dark .cdc-info-item i {
  background: rgba(56, 189, 248, 0.1) !important;
  border-color: rgba(56, 189, 248, 0.2) !important;
  color: #38bdf8 !important;
}

body.dark .course-detail-card:hover,
body.dark .wj-card:hover,
body.dark .coming-card:hover {
  background: rgba(255, 255, 255, 0.95) !important;
}

/* Color thematic headers */
.cdc-header.blue .cdc-icon { background: linear-gradient(135deg, var(--primary), #60a5fa); }
.cdc-header.green .cdc-icon { background: linear-gradient(135deg, #10b981, #34d399); }
.cdc-header.orange .cdc-icon { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.cdc-header.purple .cdc-icon { background: linear-gradient(135deg, #8b5cf6, #a78bfa); }

.cdc-header h2 {
  font-size: clamp(20px, 3vw, 24px);
  font-weight: 800;
  margin-bottom: 4px;
}

.cdc-header p {
  font-size: 14px;
  color: var(--text-secondary);
}

.cdc-badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  background-color: var(--primary-light);
  color: var(--primary);
}

body.dark .cdc-badge {
  background-color: rgba(37, 99, 235, 0.15);
  color: #60a5fa !important;
}

.cdc-header.green .cdc-badge {
  background-color: #ecfdf5;
  color: #059669;
}

body.dark .cdc-header.green .cdc-badge {
  background-color: rgba(5, 150, 105, 0.15);
  color: #34d399 !important;
}

.cdc-header.orange .cdc-badge {
  background-color: #fff7ed;
  color: #d97706;
}

body.dark .cdc-header.orange .cdc-badge {
  background-color: rgba(217, 119, 6, 0.15);
  color: #fbbf24 !important;
}

.cdc-header.purple .cdc-badge {
  background-color: #faf5ff;
  color: #7c3aed;
}

body.dark .cdc-header.purple .cdc-badge {
  background-color: rgba(124, 58, 237, 0.15);
  color: #a78bfa !important;
}

/* Card Body Layout */
.cdc-body {
  padding: 40px;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
}

.cdc-left h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  padding-left: 14px;
}

.cdc-left h4::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background-color: var(--primary);
  border-radius: var(--radius-full);
}

.cdc-topics {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.topic-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}

.topic-item i {
  color: #10b981;
  font-size: 16px;
}

/* Right Info Box */
.cdc-info-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

body.dark .cdc-info-box {
  background-color: rgba(255, 255, 255, 0.01);
}

.cdc-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.cdc-info-item i {
  font-size: 16px;
  color: var(--primary);
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(37, 99, 235, 0.05));
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.1);
  margin-top: 0;
}

.cdc-info-item div span {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.cdc-info-item div strong {
  display: block;
  font-size: 14px;
  color: var(--text-primary);
  margin-top: 2px;
}

.cdc-info-box .btn-primary {
  width: 100%;
  margin-top: 8px;
}

/* ==========================================
   3. UPCOMING / COMING SOON SECTION
   ========================================== */
.coming-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

.coming-card {
  background-color: var(--card-bg, var(--bg-primary));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-sm);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.coming-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.coming-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  transition: var(--transition-smooth);
}

.coming-card:hover .coming-icon {
  background-color: var(--primary);
  color: #ffffff;
  transform: scale(1.05);
}

.coming-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
}

.coming-card p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.coming-tag {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  background-color: var(--bg-tertiary);
  color: var(--text-muted);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

.coming-center-btn {
  text-align: center;
  margin-top: 32px;
}

/* ==========================================
   4. RESPONSIVE ADJUSTMENTS
   ========================================== */
@media (max-width: 992px) {
  .cdc-header {
    grid-template-columns: auto 1fr;
    padding: 24px;
  }
  
  .cdc-badge {
    grid-column: span 2;
    justify-self: start;
    margin-top: 8px;
  }
  
  .cdc-body {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 28px;
  }
}

@media (max-width: 576px) {
  .cdc-header {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }
  
  .cdc-badge {
    grid-column: span 1;
    justify-self: center;
  }
  
  .cdc-topics {
    grid-template-columns: 1fr;
  }
}