/* =========================
MAIN WRAPPER
========================= */
.main-wrapper {
  max-width: 1200px;
  margin: 30px auto;
  padding: 25px;

  background: #ffffff;
  border-radius: 16px;

  box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}

/* =========================
COURSE HEADER
========================= */
.course-header {
  margin-bottom: 20px;
}

.course-title {
  font-size: 22px;
  font-weight: 600;
  color: #b71c1c;
}

.course-subtitle {
  font-size: 14px;
  color: #777;
}

/* =========================
TABS
========================= */
.tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.tab {
  padding: 10px 16px;
  border-radius: 8px;
  background: #f5f5f5;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s ease;
}

.tab:hover {
  background: #ffe5e5;
}

.tab.active {
  background: #d32f2f;
  color: white;
}

/* =========================
CONTENT GRID
========================= */
.content-area {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
}

.content-card {
  background: #fafafa;
  padding: 15px;
  border-radius: 10px;

  border: 1px solid #eee;
  transition: all 0.2s ease;
}

.content-card:hover {
  background: #fff;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

/* =========================
BOTONES
========================= */
.btn-primary {
  background: #d32f2f;
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.2s;
}

.btn-primary:hover {
  background: #b71c1c;
  transform: scale(1.03);
}