:root {
  --primary: #1d4ed8;
  --primary-dark: #1e3a8a;
  --primary-light: #3b82f6;
  --bg: #f8fafc;
  --text: #0f172a;
  --text-light: #475569;
  --muted: #64748b;
  --card: #ffffff;
  --border: #e5e7eb;
  --border-light: #f1f5f9;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.2s ease;
}

* {
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ==============================
   BACK NAVIGATION
   ============================== */

.back-nav {
  margin-bottom: 1.5rem;
}

.back-link {
  display: -webkit-inline-box;
  display: -ms-inline-flexbox;
  display: inline-flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--primary);
  font-weight: 500;
  font-size: 0.9rem;
  -webkit-transition: var(--transition);
  transition: var(--transition);
}

.back-link:hover {
  gap: 0.75rem;
  color: var(--primary-dark);
}

/* ==============================
   HERO SECTION
   ============================== */

.hero {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.description-section {
  max-width: 800px;
}

#programDescription {
  font-size: 1rem;
  line-height: 1.6;
  opacity: 0.95;
}

/* ==============================
   STATS ROW
   ============================== */

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
  -webkit-transition: var(--transition);
  transition: var(--transition);
}

.stat-item:hover {
  -webkit-transform: translateY(-2px);
          transform: translateY(-2px);
  -webkit-box-shadow: var(--shadow-md);
          box-shadow: var(--shadow-md);
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

/* ==============================
   MAIN CONTENT GRID - CONSISTENT LAYOUT
   ============================== */

.content-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* Cards - Consistent sizing */
.info-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  -webkit-transition: var(--transition);
  transition: var(--transition);
  height: 100%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
}

.info-card:hover {
  -webkit-transform: translateY(-4px);
          transform: translateY(-4px);
  -webkit-box-shadow: var(--shadow-lg);
          box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.card-header {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border-light);
}

.card-icon {
  font-size: 1.5rem;
}

.info-card h2 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

/* Lists */
.career-list,
.recommended-list {
  list-style: none;
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
}

.career-list li,
.recommended-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-light);
  font-size: 0.9rem;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: 0.5rem;
}

.career-list li:before {
  content: "→";
  color: var(--primary);
  font-weight: 600;
}

.recommended-list li:before {
  content: "•";
  color: var(--primary);
  font-weight: 700;
  font-size: 1.2rem;
}

.career-list li:last-child,
.recommended-list li:last-child {
  border-bottom: none;
}

.career-list li:hover,
.recommended-list li:hover {
  color: var(--text);
  -webkit-transform: translateX(4px);
          transform: translateX(4px);
  -webkit-transition: var(--transition);
  transition: var(--transition);
}

/* Tags Container */
.tags-container {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  gap: 0.6rem;
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
  -ms-flex-line-pack: start;
      align-content: flex-start;
}

.tag {
  background: linear-gradient(135deg, #eef2ff, #e0e7ff);
  color: var(--primary-dark);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  -webkit-transition: var(--transition);
  transition: var(--transition);
  border: 1px solid rgba(29, 78, 216, 0.1);
}

.tag:hover {
  -webkit-transform: translateY(-2px);
          transform: translateY(-2px);
  background: var(--primary);
  color: white;
  cursor: default;
}

/* ==============================
   LOADING & ERROR STATES
   ============================== */

.loading-state,
.error-state {
  text-align: center;
  padding: 3rem;
  background: var(--card);
  border-radius: var(--radius-lg);
  -webkit-box-shadow: var(--shadow-md);
          box-shadow: var(--shadow-md);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 1rem;
  -webkit-animation: spin 0.8s linear infinite;
          animation: spin 0.8s linear infinite;
}

@-webkit-keyframes spin {
  to { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}

@keyframes spin {
  to { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}

.error-state {
  border-left: 4px solid var(--danger);
}

.error-state button {
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
}

.error-state button:hover {
  background: var(--primary-dark);
}

/* ==============================
   RESPONSIVE DESIGN
   ============================== */

@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  .hero {
    padding: 1.5rem;
  }
  
  .hero h1 {
    font-size: 1.5rem;
  }
  
  .stats-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .content-wrapper {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .info-card {
    padding: 1.25rem;
  }
  
  .card-header {
    margin-bottom: 1rem;
  }
  
  .info-card h2 {
    font-size: 1.1rem;
  }
  
  .career-list li,
  .recommended-list li {
    font-size: 0.85rem;
    padding: 0.5rem 0;
  }
  
  .tag {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .hero-badge {
    font-size: 0.7rem;
  }
  
  #programDescription {
    font-size: 0.9rem;
  }
  
  .stat-value {
    font-size: 1.25rem;
  }
}