body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-primary);
}

.courses-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 24px;
}

.courses-container h2 {
  font-family: var(--font-header);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 10px;
  text-align: center;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.course-section-header {
  font-family: var(--font-header);
  font-size: 1.6rem;
  font-weight: 700;
  margin-top: 50px;
  margin-bottom: 25px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 2px solid var(--border-card);
  padding-bottom: 10px;
}

.course-section-header i {
  color: var(--primary);
}

.course-section-header.ug-header i {
  color: var(--text-muted);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 25px;
}

/* GRADUATE CARD STYLE (IIT BOMBAY) */
.course-card.grad {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  padding: 28px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.course-card.grad::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-btn);
}

.course-card.grad:hover {
  transform: translateY(-5px);
  border-color: var(--border-card-hover);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.course-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  background: var(--primary-glow);
  border: 1px solid rgba(99, 102, 241, 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--primary);
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.course-card.grad h3 {
  font-family: var(--font-header);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.course-card .course-prof {
  font-size: 0.85rem;
  color: var(--secondary);
  font-weight: 600;
  margin-bottom: 12px;
}

.course-card .course-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 15px;
  letter-spacing: 0.05em;
}

.course-card.grad p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex-grow: 1;
}

/* UNDERGRADUATE CARD STYLE (UG - MUTED) */
.courses-grid.ug-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.course-card.ug {
  background: rgba(15, 23, 42, 0.3);
  border: 1px dashed rgba(255, 255, 255, 0.05);
  padding: 20px;
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.course-card.ug:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(15, 23, 42, 0.45);
}

.course-card.ug h3 {
  font-family: var(--font-header);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.course-card.ug p {
  font-size: 0.825rem;
  color: var(--text-muted);
  line-height: 1.5;
  flex-grow: 1;
}

.btn-project {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 15px;
  padding: 8px 16px;
  background: var(--primary-glow);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-sm);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  width: fit-content;
  transition: all 0.3s ease;
}

.btn-project:hover {
  background: var(--gradient-btn);
  color: white;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
}