/* Trang khoa hoc HSK1-3, AI4Kids (classes/course_page.php + course_page.js) */
.ef-cp {
  --cp-primary: #007a80;
  --cp-num-from: #007a80;
  --cp-num-to: #00a9a5;
  --cp-text: #16302f;
  --cp-muted: #5b6b6b;
  --cp-border: #e2ebeb;
  --cp-radius: 20px;
}
.ef-cp-kids {
  --cp-primary: #c2410c;
  --cp-num-from: #f97316;
  --cp-num-to: #ec4899;
  --cp-radius: 24px;
}

/* The bai hoc */
.ef-cp #region-main li.section.course-section { margin: 0 0 20px; padding: 0; border: 0; background: none; box-shadow: none; }
.ef-cp #region-main li.section.course-section > .section-item {
  padding: 18px 20px 20px; border: 1px solid var(--cp-border); border-radius: var(--cp-radius); background: #fff;
  box-shadow: 0 4px 14px rgba(0, 80, 84, .06);
}
.ef-cp #region-main .course-section-header { align-items: center; }
.ef-cp #region-main .course-section-header > .d-flex { align-items: center !important; gap: 4px; }
.ef-cp .ef-cp-num {
  display: inline-flex; flex-shrink: 0; align-items: center; justify-content: center;
  width: 52px; height: 52px; margin-right: 14px; border-radius: 16px;
  background: linear-gradient(135deg, var(--cp-num-from), var(--cp-num-to)); color: #fff;
  font-size: 1.35rem; font-weight: 800; letter-spacing: .02em;
  box-shadow: 0 4px 10px rgba(0, 0, 0, .12);
}
.ef-cp-kids .ef-cp-num { border-radius: 50%; }
.ef-cp .ef-cp-num-intro svg { width: 24px; height: 24px; }
.ef-cp #region-main .sectionname {
  flex-direction: column; align-items: flex-start !important; justify-content: center; gap: 2px;
}
.ef-cp #region-main .sectionname > a { display: flex; flex-direction: column; color: var(--cp-text); text-decoration: none; }
.ef-cp #region-main .sectionname > a:hover .ef-cp-title { text-decoration: underline; }
.ef-cp .ef-cp-kicker {
  font-size: .75rem; font-weight: 700; letter-spacing: .08em; color: var(--cp-primary); line-height: 1.4;
}
.ef-cp .ef-cp-title { font-size: 1.3rem; font-weight: 700; line-height: 1.35; color: var(--cp-text); }
.ef-cp .ef-cp-meta { font-size: .85rem; font-weight: 500; color: var(--cp-muted); }
.ef-cp #region-main .sectionname .ef-lock-tag { margin: 4px 0 0; }

/* Hoat dong: luoi o */
.ef-cp #region-main li.section ul.section {
  display: grid !important; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px;
  margin-top: 16px !important;
}
.ef-cp #region-main li.ef-cp-act {
  margin: 0; padding: 0 !important; border: 1px solid var(--cp-border) !important; border-radius: 14px; background: #fff;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.ef-cp #region-main li.ef-cp-act:hover {
  transform: translateY(-2px); border-color: var(--k-fg); box-shadow: 0 8px 18px rgba(0, 0, 0, .08);
}
.ef-cp #region-main li.ef-cp-act:not(:hover) { border-bottom-color: var(--cp-border) !important; }
.ef-cp #region-main li.section ul.section { grid-auto-rows: 1fr; }   /* moi o trong bai cao bang nhau */
.ef-cp #region-main li.ef-cp-act .activity-item {
  display: flex; align-items: center; height: 100%; padding: 12px 14px; border: 0; border-radius: 14px; background: transparent;
}
.ef-cp #region-main li.ef-cp-act .activity-item > .activity-grid { flex: 1 1 auto; min-width: 0; }
.ef-cp #region-main li.ef-cp-act .activity-grid {
  align-items: center; grid-template-columns: min-content minmax(0, 1fr) !important;
  grid-template-areas: "icon name" "icon completion" "icon visibility" "icon dates" "icon altcontent" "icon afterlink" "icon availability" !important;
}
.ef-cp #region-main li.ef-cp-act .activity-grid > * { grid-column: auto; }
.ef-cp #region-main li.ef-cp-act .activity-icon {
  display: flex; align-items: center; justify-content: center; align-self: center !important;
  width: 44px; height: 44px; margin-right: 12px !important; padding: 0; border-radius: 12px;
  background: var(--k-bg) !important; color: var(--k-fg);
}
.ef-cp-kids #region-main li.ef-cp-act .activity-icon { border-radius: 50%; }
.ef-cp #region-main li.ef-cp-act .activity-name-area { justify-content: center; }
.ef-cp .ef-cp-kind {
  font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--k-fg); line-height: 1.3;
}
.ef-cp #region-main li.ef-cp-act .instancename { font-size: 1rem; font-weight: 600; color: var(--cp-text); }
.ef-cp #region-main li.ef-cp-act .activity-completion { align-self: start !important; margin: 6px 0 0 !important; }
.ef-cp #region-main li.ef-cp-act .activity-completion .btn { font-size: .75rem; }
/* Mo ta hien tren trang khoa (vd huong dan tro choi AI4Kids): 2 dong, khong keo dai ca hang o */
.ef-cp #region-main li.ef-cp-act .activity-altcontent {
  margin-top: 6px !important; padding-top: 6px; border-top: 1px solid var(--cp-border); font-size: .85rem; line-height: 1.45;
  color: var(--cp-muted); display: -webkit-box !important; -webkit-line-clamp: 2;   /* de len .d-flex cua Moodle */ -webkit-box-orient: vertical; overflow: hidden;
}
.ef-cp #region-main li.ef-cp-act .activity-altcontent * { display: inline; margin: 0; padding: 0; border: 0; font-size: inherit; }

/* Mau theo loai hoat dong (nen nhat + chu dam, tuong phan >= 4.5:1) */
.ef-k-lecture { --k-bg: #e0f2f1; --k-fg: #00695c; }
.ef-k-vocab { --k-bg: #fff3e0; --k-fg: #c2410c; }
.ef-k-text { --k-bg: #e3f2fd; --k-fg: #1565c0; }
.ef-k-dialogue { --k-bg: #f3e8ff; --k-fg: #7e22ce; }
.ef-k-grammar { --k-bg: #e0e7ff; --k-fg: #3730a3; }
.ef-k-flash { --k-bg: #fce7f3; --k-fg: #be185d; }
.ef-k-quiz { --k-bg: #dcfce7; --k-fg: #15803d; }
.ef-k-game { --k-bg: #fef3c7; --k-fg: #b45309; }
.ef-k-submit { --k-bg: #cffafe; --k-fg: #0e7490; }
.ef-k-forum, .ef-k-file { --k-bg: #f1f5f9; --k-fg: #475569; }

@media (max-width: 600px) {
  .ef-cp #region-main li.section.course-section { padding: 14px 14px 16px; border-radius: 16px; }
  /* Mot cot: o cao theo noi dung (khong keo theo o cao nhat), trang ngan lai */
  .ef-cp #region-main li.section ul.section { grid-template-columns: 1fr; grid-auto-rows: auto; gap: 6px; margin-top: 12px !important; }
  .ef-cp #region-main li.ef-cp-act .activity-item { padding: 8px 10px; }
  .ef-cp #region-main li.section.course-section > .section-item { padding: 14px 12px 14px; }
  /* "Thu gon toan bo" xuong dong rieng, khong chen ten muc dau */
  .ef-cp #region-main .course-section-header { flex-wrap: wrap; }
  .ef-cp #region-main .course-section-header > div:has(> #collapsesections) {
    order: -1; flex: 0 0 100% !important; margin: 0 0 6px !important;   /* de len .flex-fill cua Bootstrap */
  }
  .ef-cp #region-main li.ef-cp-act .activity-icon { width: 36px; height: 36px; margin-right: 8px !important; }
  .ef-cp .ef-cp-num { width: 44px; height: 44px; font-size: 1.15rem; margin-right: 10px; }
  .ef-cp .ef-cp-title { font-size: 1.1rem; }
}
@media (prefers-reduced-motion: reduce) {
  .ef-cp #region-main li.ef-cp-act { transition: none; }
  .ef-cp #region-main li.ef-cp-act:hover { transform: none; }
}

/* Ca o bam duoc: link "stretched-link" cua Moodle phu toan o (khong chi phan chu) */
.ef-cp #region-main li.ef-cp-act .activity-item { position: relative; cursor: pointer; }
.ef-cp #region-main li.ef-cp-act .activitytitle,
.ef-cp #region-main li.ef-cp-act .activity-name-area { position: static !important; }
.ef-cp #region-main li.ef-cp-act .activity-completion,
.ef-cp #region-main li.ef-cp-act .activity-completion .dropdown,
.ef-cp #region-main li.ef-cp-act .activity-altcontent a,
.ef-cp #region-main li.ef-cp-act .activity-information a { position: relative; z-index: 2; }
.ef-cp #region-main li.ef-cp-act:focus-within { border-color: var(--k-fg) !important; box-shadow: 0 0 0 3px rgba(0, 122, 128, .25); }
.ef-cp #region-main li.ef-cp-act .aalink:focus { outline: none; box-shadow: none; }
.ef-cp #region-main li.ef-cp-act:active { transform: translateY(0); }