/* style.css - BTVN Buổi 2, Lần 1, mã đề C (Khóa học trực tuyến)
   CSS external là cách chính cho toàn trang. */

body {
  font-family: Arial, Helvetica, sans-serif;
  color: #334155;
  background-color: #fff7ed;
  margin: 0;
}

header {
  background-color: #c2410c;
  color: #ffffff;
  padding: 24px;
}

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 20px;
}

h1, h2, h4 {
  margin-top: 0;
}

.course-container {
  margin: 16px 0;
}

.courses-list {
  margin-bottom: 30px;
}

/* Thẻ dạng băng rôn xếp dọc */
.card {
  display: block;
  box-sizing: border-box;
  background-color: #ffffff;
  padding: 20px;
  margin-bottom: 20px;
  border: 1px solid #fed7aa;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(194, 65, 12, 0.08);
}

.card-header {
  border-bottom: 1px solid #ffedd5;
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.card-title {
  display: inline-block;
  color: #c2410c;
  margin: 0;
  font-size: 1.15em;
}

.badge {
  display: inline-block;
  background-color: #fff7ed;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.8em;
  margin-left: 10px;
}

.card-image {
  width: 90px;
  height: 60px;
  object-fit: contain;
  margin-bottom: 8px;
}

.desc {
  line-height: 1.5;
  margin: 8px 0;
}

.course-meta {
  margin: 8px 0 14px;
  padding-left: 20px;
  color: #64748b;
}

.course-meta li {
  margin-bottom: 4px;
}

.btn {
  display: inline-block;
  background-color: #c2410c;
  color: #ffffff;
  text-decoration: none;
  padding: 8px 18px;
  border-radius: 6px;
}

#card-noi-bat {
  border: 2px solid #c2410c;
  background-color: #fffaf5;
  box-shadow: 0 6px 16px rgba(194, 65, 12, 0.16);
}

/* Sidebar bảng lịch khai giảng */
.schedule-sidebar {
  background-color: #ffffff;
  padding: 20px;
  border: 1px solid #fed7aa;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

th, td {
  padding: 10px;
  border: 1px solid #cbd5e1;
  text-align: left;
}

th {
  background-color: #c2410c;
  color: #ffffff;
}

.row-le {
  background-color: #fff7ed;
}

.row-chan {
  background-color: #ffffff;
}

footer {
  padding: 20px 24px;
  color: #78716c;
}