/* ============================================================
   COURSES PAGE (/cn/courses.html)
   ============================================================ */
.course-list {
  display: grid;
  gap: 20px;
  max-width: 1040px;
  margin: 0 auto;
}

.course-card {
  padding: 16px 20px 14px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.course-card.is-past { box-shadow: none; background: var(--color-gray-50); padding: 14px 20px 12px; }

/* Level 1: date + issue + title */
.course-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-gray-100);
}

.course-date {
  flex: 0 0 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 5px 0 4px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  color: var(--color-white);
  line-height: 1.05;
}

.is-past .course-date { background: var(--color-gray-400); }
.course-month { font-size: 12px; font-weight: 600; }
.course-day { font-size: 24px; font-weight: 900; margin: 0; }
.course-week { font-size: 12px; opacity: 0.85; }

.course-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 10px;
  margin-bottom: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-gray-500);
}

.course-meta span + span::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 3px;
  margin-right: 10px;
  vertical-align: middle;
  border-radius: 50%;
  background: var(--color-gray-300);
}

.course-meta .course-issue {
  padding: 2px 10px;
  border-radius: var(--radius-full);
  background: var(--color-primary-50);
  color: var(--color-primary-dark);
}

.course-meta .course-issue + span::before { display: none; }

.course-title {
  margin: 0;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.25;
  color: var(--color-gray-900);
  letter-spacing: -0.3px;
}

.is-past .course-title { font-size: 20px; color: var(--color-gray-700); }

/* Level 2: body = text column + QR column */
.course-body {
  display: grid;
  grid-template-columns: 1fr 132px;
  gap: 20px;
  padding-top: 10px;
}

.no-qr .course-body { grid-template-columns: 1fr; }

.course-summary {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-gray-700);
}

.course-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 16px;
  margin: 0 0 8px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  background: var(--color-gray-50);
}

.is-past .course-info { background: var(--color-white); }

.course-info-item { display: flex; gap: 8px; align-items: flex-start; }

.course-info-item svg {
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.course-info dt { font-size: 12px; line-height: 1.3; color: var(--color-gray-500); }
.course-info dd { margin: 0; font-size: 13px; font-weight: 600; color: var(--color-gray-800); line-height: 1.35; }

/* Level 3: what you'll learn */
.course-learn h4 {
  margin: 0 0 4px;
  font-size: 13px;
  font-weight: 800;
  color: var(--color-gray-900);
}

.course-learn ol {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.course-learn li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--color-gray-700);
  line-height: 1.4;
}

.course-learn-no {
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 800;
  color: var(--color-accent-dark);
  font-variant-numeric: tabular-nums;
}

.course-state { font-size: 15px; font-weight: 600; color: var(--color-gray-500); }
.is-past .course-actions { margin-top: 4px; }

/* QR beside the text on desktop; the button opens it large on phones. */
.course-qr {
  align-self: start;
  padding-left: 16px;
  border-left: 1px dashed var(--color-gray-200);
  text-align: center;
}

.course-qr-title { margin: 0 0 4px; font-size: 13px; font-weight: 800; color: var(--color-gray-900); }

.course-qr img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  background: var(--color-white);
}

.course-qr-note { margin: 4px 0 0; font-size: 12px; color: var(--color-gray-500); line-height: 1.4; }

.course-actions .course-signup { display: none; }

.course-empty { text-align: center; color: var(--color-gray-500); padding: 40px 0; }

.course-past-title {
  max-width: 1040px;
  margin: 64px auto 20px;
  font-size: 20px;
  font-weight: 800;
  color: var(--color-gray-700);
}

.course-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(15, 23, 42, 0.6);
}

.course-modal[hidden] { display: none; }

.course-modal-box {
  position: relative;
  width: 100%;
  max-width: 340px;
  padding: 28px 24px 24px;
  border-radius: var(--radius-lg);
  background: var(--color-white);
  text-align: center;
}

.course-modal-close {
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 28px;
  line-height: 1;
  color: var(--color-gray-400);
  background: none;
  border: 0;
  cursor: pointer;
}

.course-modal-title { font-size: 18px; font-weight: 800; margin: 0 0 6px; color: var(--color-gray-900); }
.course-modal-when { font-size: 14px; color: var(--color-gray-500); margin: 0 0 16px; }
.course-modal-box img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.course-modal-note { font-size: 14px; color: var(--color-gray-600); margin: 12px 0 0; line-height: 1.6; }

@media (max-width: 860px) {
  .course-card { padding: 14px 14px 12px; }
  .course-head { gap: 12px; padding-bottom: 10px; }
  .course-date { flex-basis: 56px; padding: 4px 0; }
  .course-day { font-size: 22px; }
  .course-title { font-size: 18px; }
  .course-body { grid-template-columns: 1fr; padding-top: 10px; }
  .course-qr { display: none; }
  .course-actions { margin-top: 14px; }
  .course-actions .course-signup { display: inline-flex; }
}

@media (max-width: 520px) {
  .course-head { align-items: flex-start; }
  .course-info { grid-template-columns: 1fr; padding: 12px 14px; }
  .course-learn ol { grid-template-columns: 1fr; }
  .course-actions .course-signup { width: 100%; }
}