/* ===============================
   COURSE PAGE STYLING
================================= */

.course-container {
  max-width: 1100px;
  margin: 3rem auto;
  padding: 0 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.course-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  color: #1e3a8a;
  margin-bottom: 0.5rem;
}

.course-subtitle {
  text-align: center;
  font-size: 1rem;
  color: #555;
  margin-bottom: 2rem;
}

/* ===============================
   TABLE STYLING
================================= */

.chapter-table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  border-radius: 8px;
  overflow: hidden;
}

.chapter-table thead {
  background-color: #1e3a8a;
  color: #ffffff;
}

.chapter-table th {
  padding: 14px;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
}

.chapter-table td {
  padding: 16px;
  vertical-align: top;
  border-bottom: 1px solid #e5e7eb;
}

/* Zebra Row Effect */
.chapter-table tbody tr:nth-child(even) {
  background-color: #f8fafc;
}

/* Hover Effect */
.chapter-table tbody tr:hover {
  background-color: #eef2ff;
  transition: 0.3s ease;
}

/* ===============================
   UNIT NUMBER STYLING
================================= */

.chapter-number {
  display: inline-block;
  width: 38px;
  height: 38px;
  line-height: 38px;
  text-align: center;
  background-color: #1e3a8a;
  color: #ffffff;
  font-weight: bold;
  border-radius: 50%;
  font-size: 0.95rem;
}

/* ===============================
   TITLE & TOPICS
================================= */

.chapter-title-cell {
  display: block;
  font-weight: 600;
  font-size: 1.05rem;
  color: #111827;
  margin-bottom: 8px;
}

.chapter-topics {
  font-size: 0.95rem;
  color: #374151;
  line-height: 1.6;
}

/* ===============================
   NUMERICAL HIGHLIGHT
================================= */

.numerical {
  display: inline-block;
  margin-top: 8px;
  padding: 4px 10px;
  background-color: #dc2626;
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 4px;
}