/* Aula: el temario es protagonista. Estilos aislados del login y la administración. */
.classroom-shell { color: var(--text); }
.classroom-shell .classroom-topline { display: flex; justify-content: flex-end; margin: 0 0 12px; }
.classroom-shell .classroom-return { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }

.classroom-shell .classroom-header {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  min-height: 148px;
  padding: 20px 24px;
  margin-bottom: 24px;
  color: #213f33;
  background: linear-gradient(105deg, #f1f6f2, #fff);
  border: 1px solid #dce6de;
  border-left: 4px solid #4b8068;
  border-radius: 14px;
  box-shadow: 0 4px 18px rgba(21, 61, 56, .04);
}
.classroom-shell .classroom-cover {
  width: 128px; height: 96px; display: grid; place-items: center;
  overflow: hidden; background: #fff; border: 1px solid #e0e8e2; border-radius: 10px;
}
.classroom-shell .classroom-cover-image { display: block; width: 100%; height: 100%; object-fit: contain; }
.classroom-shell .classroom-cover-placeholder { padding: 12px; color: #527060; font: 600 12px var(--font-display); letter-spacing: .04em; text-transform: uppercase; }
.classroom-shell .classroom-header-body { min-width: 0; }
.classroom-shell .classroom-tags { display: flex; gap: 7px; align-items: center; flex-wrap: wrap; margin-bottom: 7px; }
.classroom-shell .classroom-header .tag {
  display: inline-flex; align-items: center; min-height: 25px; padding: 4px 8px;
  color: #426453; background: #e6eee8; border-radius: 6px;
  font: 600 11px/1.2 var(--font-display); letter-spacing: .03em; text-transform: uppercase;
}
.classroom-shell .classroom-header h1 {
  max-width: 920px; margin: 0; color: #213f33;
  font: 600 clamp(22px, 2vw, 29px)/1.2 var(--font-display); letter-spacing: -.025em;
  text-transform: none; overflow-wrap: anywhere;
}
.classroom-shell .classroom-header p { max-width: 780px; margin: 6px 0 0; color: #657769; font-size: 13px; line-height: 1.5; }
.classroom-shell .classroom-header-foot { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 12px; }
.classroom-shell .classroom-progress { display: flex; align-items: center; min-width: 0; gap: 10px; }
.classroom-shell .classroom-progress .ring {
  width: 42px; height: 42px;
  background: conic-gradient(#4b8068 calc(var(--p) * 1%), #dce7df 0);
}
.classroom-shell .classroom-progress .ring > span { width: 34px; height: 34px; color: #213f33; background: #f7faf7; font-size: 12px; }
.classroom-shell .classroom-progress-copy { display: grid; min-width: 0; gap: 2px; font-size: 13px; }
.classroom-shell .classroom-progress-copy span { color: #647669; font-size: 12px; }
.classroom-shell .classroom-cta {
  flex: 0 1 auto; min-width: 0; max-width: 48%; padding: 10px 14px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px;
  color: #fff; background: #2e6854; border-color: #2e6854;
}
.classroom-shell .classroom-cta:hover { background: #245441; }
.classroom-shell .classroom-cta span { font-weight: 400; }

.classroom-shell .classroom-columns { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 24px; align-items: start; }
.classroom-shell .classroom-primary { min-width: 0; }
.classroom-shell .classroom-section-heading { display: flex; align-items: end; justify-content: space-between; gap: 14px; padding: 0 2px 14px; }
.classroom-shell .classroom-section-heading h2 { margin: 3px 0 0; color: var(--ink); font: 600 22px/1.2 var(--font-display); letter-spacing: -.025em; }
.classroom-shell .classroom-section-heading .eyebrow,
.classroom-shell .classroom-support-card .eyebrow { color: #608476; }
.classroom-shell .classroom-syllabus { display: grid; gap: 12px; }
.classroom-shell .classroom-module { margin: 0; border: 1px solid var(--line); border-radius: 12px; box-shadow: none; }
.classroom-shell .classroom-module summary { min-height: 68px; padding: 14px 18px; }
.classroom-shell .classroom-module .mod-n { width: 34px; height: 34px; background: #e8f0ea; color: #25664e; font-size: 14px; }
.classroom-shell .classroom-module-title { display: grid; flex: 1; min-width: 0; gap: 4px; }
.classroom-shell .classroom-module-title b { color: var(--ink); font: 600 16px/1.35 var(--font-display); white-space: normal; overflow-wrap: anywhere; }
.classroom-shell .classroom-module-title .small { font-size: 12px; }
.classroom-shell .classroom-release { color: var(--muted); font-size: 12px; }
.classroom-shell .classroom-module-progress { width: 64px; height: 4px; flex: none; }
.classroom-shell .classroom-lesson-row { min-height: 56px; padding: 12px 18px; font-size: 15px; flex-wrap: nowrap; }
.classroom-shell .classroom-lesson-row:hover { background: #f7faf8; }
.classroom-shell .classroom-lesson-row.next { background: #edf5ef; color: #1f5f49; }
.classroom-shell .classroom-lesson-row.locked { opacity: 1; color: var(--muted); background: #fbfcfb; }
.classroom-shell .classroom-lesson-title { flex: 1; min-width: 0; font-size: 15px; line-height: 1.5; white-space: normal; overflow-wrap: anywhere; }
.classroom-shell .classroom-lesson-meta { flex: 0 1 34%; min-width: 78px; overflow: hidden; font-size: 12px; text-align: right; text-overflow: ellipsis; white-space: nowrap; }

.classroom-shell .classroom-aside { display: grid; gap: 14px; align-content: start; min-width: 0; }
.classroom-shell .classroom-support-card { padding: 16px; margin: 0; border: 1px solid var(--line); border-radius: 12px; box-shadow: none; }
.classroom-shell .classroom-support-card h3 { margin: 7px 0 4px; color: var(--ink); font-size: 14px; line-height: 1.4; overflow-wrap: anywhere; }
.classroom-shell .classroom-support-card p { margin: 7px 0 0; font-size: 13px; line-height: 1.6; }
.classroom-shell .classroom-support-card .when { margin-top: 6px; color: var(--ink); font: 600 15px/1.3 var(--font-display); }
.classroom-shell .classroom-support-card .row { gap: 7px; margin-top: 10px; }
.classroom-shell .classroom-support-card .btn.cta { display: inline-flex; margin-top: 10px; font-size: 12px; }
.classroom-shell .classroom-empty { padding: 24px; border: 1px dashed var(--line-2); border-radius: 12px; box-shadow: none; }
.classroom-shell .classroom-empty h2 { margin: 0; font-size: 18px; }
.classroom-shell .classroom-empty p { margin-bottom: 0; }
.classroom-shell .classroom-activities { min-width: 0; }

.classroom.lesson { min-width: 0; }
.classroom.lesson .classroom-lesson-return { align-items: center; }
.classroom.lesson .classroom-player { grid-template-columns: minmax(0, 1fr) 270px; gap: 20px; }
.classroom.lesson .classroom-player > aside { gap: 12px; }
.classroom.lesson .classroom-player .lesson-head { padding: 20px; border-radius: 13px; }
.classroom.lesson .classroom-player .lesson-head h1 { margin: 5px 0 0; font-size: clamp(22px, 2.5vw, 29px); }
.classroom.lesson #lessonActivities { margin-top: 20px; }

@media (max-width: 1049px) {
  .classroom-shell .classroom-columns { grid-template-columns: minmax(0, 1fr); }
  .classroom-shell .classroom-aside { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .classroom-shell .classroom-activities { grid-column: 1 / -1; }
  .classroom.lesson .classroom-player { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 680px) {
  .classroom-shell .classroom-header { grid-template-columns: 64px minmax(0, 1fr); gap: 12px; min-height: 0; padding: 16px; }
  .classroom-shell .classroom-cover { width: 64px; height: 54px; }
  .classroom-shell .classroom-header h1 { font-size: 21px; }
  .classroom-shell .classroom-header-foot { align-items: flex-start; flex-direction: column; }
  .classroom-shell .classroom-cta { max-width: 100%; }
  .classroom-shell .classroom-cta span { display: none; }
  .classroom-shell .classroom-module summary { gap: 10px; padding: 14px; }
  .classroom-shell .classroom-module-progress { display: none; }
  .classroom-shell .classroom-module .num { flex: none; }
  .classroom-shell .classroom-lesson-row { align-items: flex-start; flex-wrap: wrap; padding: 12px 14px; gap: 6px 10px; }
  .classroom-shell .classroom-lesson-meta { flex-basis: calc(100% - 28px); margin-left: 28px; text-align: left; }
  .classroom-shell .classroom-aside { grid-template-columns: minmax(0, 1fr); }
}