:root {
  --experience-accent: var(--color-accent, #680dbf);
  --experience-accent-dark: #4c0a8f;
  --experience-accent-soft: rgba(104, 13, 191, 0.1);
  --experience-accent-lighter: rgba(104, 13, 191, 0.055);
  --experience-text: var(--color-text, #181326);
  --experience-muted: var(--color-muted, rgba(24, 19, 38, 0.66));
  --experience-border: rgba(104, 13, 191, 0.14);
  --experience-border-strong: rgba(104, 13, 191, 0.22);
  --experience-surface: rgba(255, 255, 255, 0.94);
  --experience-surface-soft: #faf7ff;
  --experience-surface-lilac: #f4edff;
  --experience-shadow-soft: 0 18px 44px rgba(43, 18, 78, 0.1);
  --experience-shadow-card: 0 12px 30px rgba(43, 18, 78, 0.08);
  --experience-radius-xl: 28px;
  --experience-radius-lg: 22px;
  --experience-radius-md: 16px;
  --experience-radius-sm: 12px;
  --experience-transition: 180ms ease;
}

/* =========================================================
   Layout principal de la experiencia
   ========================================================= */

.experience-header {
  display: grid;
  gap: var(--space-4, 1.25rem);
  margin-bottom: var(--space-6, 2rem);
  position: relative;
  overflow: hidden;
  padding: clamp(1.35rem, 3vw, 2rem);
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-xl);
  background:
    radial-gradient(circle at top left, rgba(104, 13, 191, 0.13), transparent 34%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(250, 247, 255, 0.96));
  box-shadow: var(--experience-shadow-soft);
}

.experience-header::after {
  content: "♪";
  position: absolute;
  right: clamp(1rem, 4vw, 2rem);
  bottom: -3.5rem;
  z-index: 0;
  color: rgba(104, 13, 191, 0.065);
  font-size: clamp(8rem, 18vw, 15rem);
  font-weight: 900;
  line-height: 1;
  transform: rotate(-12deg);
  pointer-events: none;
}

.experience-header > * {
  position: relative;
  z-index: 1;
}

.experience-header--compact {
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.75fr);
  align-items: start;
}

.experience-header .hero-title {
  max-width: 850px;
  margin-bottom: 0.65rem;
  letter-spacing: -0.055em;
}

.experience-header .muted {
  max-width: 760px;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
}

.experience-header__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: var(--space-4, 1.25rem);
}

.experience-header__actions + .experience-header__actions {
  margin-top: 0.85rem;
}

.experience-header__meta {
  min-width: 0;
}

.experience-header__meta .card {
  height: 100%;
  min-height: 100%;
  border-color: var(--experience-border);
  box-shadow: var(--experience-shadow-card);
}

.experience-flow {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: var(--space-6, 2rem);
  align-items: start;
}

.experience-flow__rail {
  position: sticky;
  top: 1rem;
  align-self: start;
  max-height: calc(100vh - 2rem);
  overflow: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(104, 13, 191, 0.24) transparent;
}

.experience-flow__rail::-webkit-scrollbar {
  width: 8px;
}

.experience-flow__rail::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(104, 13, 191, 0.24);
}

.experience-flow__main {
  min-width: 0;
}

/* =========================================================
   Ruta lateral de pasos
   ========================================================= */

.step-rail {
  display: grid;
  gap: var(--space-4, 1.25rem);
  border-color: var(--experience-border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(250, 247, 255, 0.94));
  box-shadow: var(--experience-shadow-card);
}

.step-rail__list {
  display: grid;
  gap: 0.72rem;
}

.step-rail__phase {
  margin: 0.85rem 0 -0.15rem;
  color: var(--experience-accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.step-rail__phase:first-child {
  margin-top: 0;
}

.step-rail__item {
  position: relative;
  display: grid;
  gap: 0.3rem;
  width: 100%;
  min-height: 74px;
  padding: 0.95rem 1rem 0.95rem 1.15rem;
  border: 1px solid rgba(104, 13, 191, 0.1);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--experience-text);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition:
    transform var(--experience-transition),
    border-color var(--experience-transition),
    background var(--experience-transition),
    box-shadow var(--experience-transition);
}

.step-rail__item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  border-radius: 999px 0 0 999px;
  background: transparent;
  transition: background var(--experience-transition);
}

.step-rail__item:hover {
  transform: translateY(-1px);
  border-color: var(--experience-border-strong);
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(43, 18, 78, 0.08);
}

.step-rail__item:focus-visible {
  outline: 3px solid rgba(104, 13, 191, 0.22);
  outline-offset: 2px;
}

.step-rail__item.is-active {
  border-color: rgba(104, 13, 191, 0.34);
  background:
    linear-gradient(135deg, rgba(104, 13, 191, 0.12), rgba(255, 255, 255, 0.96));
  box-shadow: 0 12px 28px rgba(104, 13, 191, 0.14);
}

.step-rail__item.is-active::before {
  background: var(--experience-accent);
}

.step-rail__item.is-completed {
  background: rgba(255, 255, 255, 0.88);
}

.step-rail__item.is-completed .step-rail__index::after {
  content: " ✓";
  color: var(--experience-accent);
  font-weight: 900;
}

.step-rail__index {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  color: var(--experience-accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

.step-rail__item strong {
  display: block;
  font-size: 0.98rem;
  line-height: 1.25;
}

/* =========================================================
   Stage de paso actual
   ========================================================= */

.experience-stage {
  display: grid;
  gap: var(--space-5, 1.5rem);
  border-color: var(--experience-border);
  background: var(--experience-surface);
  box-shadow: var(--experience-shadow-card);
}

.experience-stage__topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4, 1.25rem);
  padding-bottom: var(--space-4, 1.25rem);
  border-bottom: 1px solid rgba(104, 13, 191, 0.1);
}

.experience-stage__topbar h3 {
  margin: 0.25rem 0 0;
}

.experience-stage__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem;
  padding-top: var(--space-4, 1.25rem);
  border-top: 1px solid rgba(104, 13, 191, 0.1);
}

.experience-stage__actions button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

/* =========================================================
   Paneles superiores: bienvenida y objetivos
   ========================================================= */

.welcome-panel,
.objectives-panel {
  display: grid;
  gap: var(--space-5, 1.5rem);
  margin-bottom: var(--space-5, 1.5rem);
  border-color: var(--experience-border);
  background:
    radial-gradient(circle at top right, rgba(104, 13, 191, 0.08), transparent 32%),
    rgba(255, 255, 255, 0.96);
  box-shadow: var(--experience-shadow-card);
}

.welcome-section-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4, 1.25rem);
}

.welcome-section {
  display: grid;
  gap: 0.55rem;
  padding: var(--space-4, 1.25rem);
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-lg);
  background: rgba(250, 247, 255, 0.78);
}

.welcome-section h4 {
  margin: 0;
  color: var(--experience-text);
  font-size: 1rem;
}

.welcome-section p {
  margin: 0;
  color: var(--experience-muted);
}

.welcome-panel__closing {
  margin: 0;
  padding: var(--space-4, 1.25rem);
  border: 1px solid rgba(104, 13, 191, 0.13);
  border-radius: var(--experience-radius-lg);
  background: linear-gradient(135deg, rgba(104, 13, 191, 0.09), rgba(255, 255, 255, 0.9));
  color: var(--experience-text);
  font-weight: 650;
}

.objectives-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3, 1rem);
}

.objective-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: start;
  padding: var(--space-4, 1.25rem);
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-lg);
  background: rgba(255, 255, 255, 0.84);
}

.objective-item__check {
  display: inline-grid;
  place-items: center;
  width: 1.55rem;
  height: 1.55rem;
  margin-top: 0.1rem;
  border-radius: 999px;
  background: var(--experience-accent-soft);
}

.objective-item__check::before {
  content: "✓";
  color: var(--experience-accent);
  font-size: 0.82rem;
  font-weight: 900;
}

.objective-item strong {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--experience-text);
}

.objective-item p {
  margin: 0;
  color: var(--experience-muted);
}

/* =========================================================
   Estados vacíos
   ========================================================= */

.empty-state {
  display: grid;
  gap: 0.65rem;
  border: 1px dashed var(--experience-border-strong);
  background:
    linear-gradient(135deg, rgba(104, 13, 191, 0.055), rgba(255, 255, 255, 0.94));
}

.empty-state h3 {
  margin: 0;
}

.empty-state p {
  margin: 0;
}

/* =========================================================
   Cards generales usadas por renderers
   ========================================================= */

.step-card,
.step-card--intro,
.step-card--content,
.step-card--practice,
.step-card--quiz,
.step-card--submission,
.step-card--reflection,
.step-card--closure,
.step-card--survey {
  display: grid;
  gap: var(--space-5, 1.5rem);
}

.step-card__header,
.step-section {
  display: grid;
  gap: var(--space-3, 1rem);
}

.step-card__header h3,
.step-card__header h4,
.step-section h3,
.step-section h4 {
  margin: 0;
}

.step-card__header p,
.step-section p {
  margin: 0;
}

.step-list,
.instruction-list,
.coach-list,
.bullet-list,
.callout-list {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding-left: 1.25rem;
}

.step-list li,
.instruction-list li,
.coach-list li,
.bullet-list li,
.callout-list li {
  color: var(--experience-muted);
}

.support-card-grid,
.callout-grid,
.bullet-group-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4, 1.25rem);
}

.support-card,
.callout-card,
.bullet-group {
  display: grid;
  gap: 0.65rem;
  padding: var(--space-4, 1.25rem);
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-lg);
  background: rgba(250, 247, 255, 0.78);
}

.support-card h4,
.callout-card h4,
.bullet-group h4 {
  margin: 0;
}

.support-card p,
.callout-card p,
.bullet-group p {
  margin: 0;
  color: var(--experience-muted);
}

.tip-box {
  padding: var(--space-4, 1.25rem);
  border: 1px solid rgba(104, 13, 191, 0.18);
  border-radius: var(--experience-radius-lg);
  background:
    linear-gradient(135deg, rgba(104, 13, 191, 0.1), rgba(255, 255, 255, 0.9));
  color: var(--experience-text);
}

/* =========================================================
   Cuestionario inicial
   ========================================================= */

.step-card--survey {
  display: grid;
  gap: var(--space-5, 1.5rem);
}

.survey-hero {
  display: grid;
  gap: var(--space-3, 1rem);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-xl);
  background:
    radial-gradient(circle at top right, rgba(104, 13, 191, 0.1), transparent 30%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(250, 247, 255, 0.94));
}

.survey-hero__eyebrow {
  margin: 0;
  color: var(--experience-accent);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.survey-hero__title {
  margin: 0;
  color: var(--experience-text);
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.06;
  letter-spacing: -0.05em;
}

.survey-prose,
.survey-closing {
  display: grid;
  gap: var(--space-3, 1rem);
}

.survey-prose p,
.survey-closing p {
  margin: 0;
  color: var(--experience-muted);
}

.survey-closing {
  padding: var(--space-4, 1.25rem);
  border: 1px solid rgba(104, 13, 191, 0.14);
  border-radius: var(--experience-radius-lg);
  background: var(--experience-surface-lilac);
}

.survey-form {
  display: grid;
  gap: var(--space-6, 2rem);
}

.survey-section {
  display: grid;
  gap: var(--space-4, 1.25rem);
  padding: var(--space-5, 1.5rem);
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(250, 247, 255, 0.92));
}

.survey-section__heading {
  display: flex;
  align-items: center;
  gap: var(--space-3, 1rem);
}

.survey-section__heading h4 {
  margin: 0;
  color: var(--experience-text);
  font-size: clamp(1.35rem, 3vw, 2.15rem);
  letter-spacing: -0.04em;
}

.survey-section__index {
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 999px;
  background: var(--experience-accent);
  color: #ffffff;
  font-weight: 800;
  box-shadow: 0 10px 22px rgba(104, 13, 191, 0.2);
}

.survey-question {
  display: grid;
  gap: var(--space-3, 1rem);
  padding: var(--space-4, 1.25rem);
  border: 1px solid rgba(104, 13, 191, 0.1);
  border-radius: var(--experience-radius-lg);
  background: rgba(255, 255, 255, 0.72);
}

.survey-question__label {
  margin: 0;
  color: var(--experience-text);
  font-size: 1.05rem;
  font-weight: 700;
}

.survey-choice-group {
  display: grid;
  gap: 0.85rem;
}

.survey-choice {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid rgba(104, 13, 191, 0.08);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--experience-muted);
  font-size: 1rem;
  cursor: pointer;
  transition:
    border-color var(--experience-transition),
    background var(--experience-transition);
}

.survey-choice:hover {
  border-color: var(--experience-border-strong);
  background: #ffffff;
}

.survey-choice input {
  flex: 0 0 auto;
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.15rem;
  accent-color: var(--experience-accent);
}

.survey-textarea {
  width: 100%;
  min-height: 140px;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(15, 23, 42, 0.16);
  border-radius: 18px;
  background: #ffffff;
  color: var(--experience-text);
  font: inherit;
  line-height: 1.55;
  resize: vertical;
  transition:
    border-color var(--experience-transition),
    box-shadow var(--experience-transition);
}

.survey-textarea:focus {
  border-color: var(--experience-accent);
  outline: none;
  box-shadow: 0 0 0 4px rgba(104, 13, 191, 0.12);
}

/* =========================================================
   Lista de canciones
   ========================================================= */

.song-list-form {
  display: grid;
  gap: var(--space-4, 1.25rem);
}

.song-list-grid {
  display: grid;
  gap: var(--space-4, 1.25rem);
}

.song-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: var(--space-3, 1rem);
  align-items: end;
  padding: var(--space-4, 1.25rem);
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-lg);
  background: rgba(250, 247, 255, 0.76);
}

.song-field {
  display: grid;
  gap: 0.45rem;
}

.song-field span {
  color: var(--experience-text);
  font-weight: 700;
}

.song-field input {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(15, 23, 42, 0.16);
  border-radius: 14px;
  background: #ffffff;
  color: var(--experience-text);
  font: inherit;
  transition:
    border-color var(--experience-transition),
    box-shadow var(--experience-transition);
}

.song-field input:focus {
  border-color: var(--experience-accent);
  outline: none;
  box-shadow: 0 0 0 4px rgba(104, 13, 191, 0.12);
}

.song-list-preview,
.admin-song-list {
  display: grid;
  gap: var(--space-3, 1rem);
  padding: var(--space-4, 1.25rem);
  border: 1px solid rgba(104, 13, 191, 0.12);
  border-radius: var(--experience-radius-lg);
  background: var(--experience-surface-soft);
}

.song-list-preview h4,
.admin-song-list h4 {
  margin: 0;
  color: var(--experience-text);
}

.song-list-preview ul,
.admin-song-list ul {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding-left: 1.25rem;
}

.song-list-preview li,
.admin-song-list li {
  display: grid;
  gap: 0.15rem;
  color: var(--experience-text);
}

.song-list-preview li span,
.admin-song-list li span {
  color: var(--experience-muted);
}

/* =========================================================
   Carga de tareas / evidencias
   ========================================================= */

.task-upload-list {
  display: grid;
  gap: var(--space-4, 1.25rem);
}

.task-upload-card {
  display: grid;
  gap: var(--space-3, 1rem);
  padding: var(--space-4, 1.25rem);
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-lg);
  background: rgba(250, 247, 255, 0.76);
}

.task-upload-card__label {
  color: var(--experience-text);
  font-size: 1.08rem;
  font-weight: 700;
}

.task-upload-card__input {
  width: 100%;
  padding: 0.85rem;
  border: 1px dashed rgba(104, 13, 191, 0.28);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.76);
  font: inherit;
}

.task-upload-card__button {
  justify-self: start;
}

/* =========================================================
   Recursos de aprendizaje embebidos
   ========================================================= */

.practice-resource {
  display: grid;
  gap: var(--space-4, 1.25rem);
  padding: var(--space-4, 1.25rem);
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-xl);
  background:
    radial-gradient(circle at top right, rgba(104, 13, 191, 0.08), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(250, 247, 255, 0.95));
  box-shadow: 0 10px 24px rgba(43, 18, 78, 0.06);
}

.practice-resource + .practice-resource {
  margin-top: var(--space-4, 1.25rem);
}

.practice-resource__intro {
  display: grid;
  gap: var(--space-3, 1rem);
}

.practice-resource__intro h4 {
  margin: 0;
  color: var(--experience-text);
  font-size: 1.35rem;
  letter-spacing: -0.025em;
}

.practice-resource__intro p {
  margin: 0;
  color: var(--experience-muted);
}

.practice-resource__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3, 1rem);
  align-items: center;
}

.practice-resource__frame-wrap {
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: var(--experience-radius-lg);
  background: #ffffff;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.7);
}

.practice-resource__frame {
  display: block;
  width: 100%;
  min-height: 720px;
  border: 0;
  background: #ffffff;
}

.practice-resource__mobile-open {
  display: none;
}

/* =========================================================
   Quiz
   ========================================================= */

.quiz-card,
.quiz-options {
  display: grid;
  gap: var(--space-3, 1rem);
}

.quiz-option {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-md);
  background: rgba(255, 255, 255, 0.82);
  color: var(--experience-text);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition:
    transform var(--experience-transition),
    border-color var(--experience-transition),
    background var(--experience-transition),
    box-shadow var(--experience-transition);
}

.quiz-option:hover {
  transform: translateY(-1px);
  border-color: var(--experience-border-strong);
  background: #ffffff;
  box-shadow: 0 10px 22px rgba(43, 18, 78, 0.08);
}

.quiz-option:focus-visible {
  outline: 3px solid rgba(104, 13, 191, 0.22);
  outline-offset: 2px;
}

.quiz-option.is-selected,
.quiz-option[aria-pressed="true"] {
  border-color: rgba(104, 13, 191, 0.38);
  background: var(--experience-accent-soft);
}

.quiz-feedback {
  padding: var(--space-4, 1.25rem);
  border-radius: var(--experience-radius-lg);
  background: var(--experience-surface-lilac);
  color: var(--experience-text);
}

/* =========================================================
   Diagrama de teclado, por si el renderer lo usa
   ========================================================= */

.keyboard-diagram {
  display: grid;
  gap: var(--space-4, 1.25rem);
  padding: var(--space-5, 1.5rem);
  border: 1px solid var(--experience-border);
  border-radius: var(--experience-radius-xl);
  background:
    radial-gradient(circle at top right, rgba(104, 13, 191, 0.06), transparent 40%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(250, 247, 255, 0.92));
  box-shadow: var(--experience-shadow-card);
}

.keyboard-diagram__header {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.keyboard-diagram__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  width: fit-content;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--experience-surface-lilac);
  color: var(--experience-accent);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.keyboard-diagram__title {
  margin: 0;
  color: var(--experience-text);
  font-size: 1.15rem;
  font-weight: 800;
}

.keyboard-diagram__stage {
  position: relative;
  max-width: 520px;
  margin: 0 auto;
  padding-top: 1.5rem;
  user-select: none;
}

.keyboard-diagram__groups-hint {
  display: grid;
  grid-template-columns: 3fr 4fr;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  text-align: center;
}

.keyboard-diagram__group-label {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border: 1px dashed var(--experience-accent);
  border-radius: 999px;
  background: rgba(104, 13, 191, 0.06);
  color: var(--experience-accent-dark);
  font-size: 0.75rem;
  font-weight: 700;
}

.keyboard-diagram__group-label--fa {
  border-color: var(--color-secondary, #5729ff);
  color: var(--color-secondary, #5729ff);
  background: rgba(87, 41, 255, 0.06);
}

.keyboard-diagram__keys {
  position: relative;
  display: flex;
  height: 140px;
  border: 2px solid #220a63;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(34, 10, 99, 0.12);
  overflow: visible;
}

.keyboard-diagram__bottom {
  display: flex;
  width: 100%;
  height: 100%;
}

.white-key {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  padding-bottom: 0.65rem;
  background: #ffffff;
  border-right: 1px solid #dcdce6;
  border-radius: 0 0 6px 6px;
  color: #5e6470;
  font-weight: 700;
  font-size: 0.9rem;
  transition: background 0.15s ease, color 0.15s ease;
}

.white-key:last-child {
  border-right: none;
}

.white-key.is-highlighted {
  background: linear-gradient(180deg, #ffffff 60%, #f4edff 100%);
  color: var(--experience-accent-dark);
}

.white-key.is-highlighted span {
  display: inline-grid;
  place-items: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.35rem;
  border-radius: 999px;
  background: var(--experience-accent);
  color: #ffffff;
  font-weight: 900;
  box-shadow: 0 4px 10px rgba(104, 13, 191, 0.3);
}

.white-key.is-highlighted--fa span {
  background: var(--color-secondary, #5729ff);
  box-shadow: 0 4px 10px rgba(87, 41, 255, 0.3);
}

.keyboard-diagram__top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 62%;
  pointer-events: none;
}

.black-key {
  position: absolute;
  top: 0;
  width: 9%;
  height: 100%;
  background: linear-gradient(180deg, #181326 0%, #2b124e 100%);
  border-radius: 0 0 5px 5px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.35);
  z-index: 2;
}

/* Posicionamiento exacto entre teclas blancas (7 teclas blancas = 14.28% c/u) */
.black-key--1 { left: 9.7%; }   /* Entre Do y Re */
.black-key--2 { left: 24.0%; }  /* Entre Re y Mi */
.black-key--4 { left: 52.6%; }  /* Entre Fa y Sol */
.black-key--5 { left: 66.9%; }  /* Entre Sol y La */
.black-key--6 { left: 81.2%; }  /* Entre La y Si */

.keyboard-diagram__note {
  margin: 0;
  padding: 0.75rem 1rem;
  border-radius: var(--experience-radius-md);
  background: var(--experience-surface-lilac);
  color: var(--experience-accent-dark);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.45;
}

/* =========================================================
   Sistema de microilustraciones educativas
   ========================================================= */

.edu-illustration {
  margin: var(--space-4, 1rem) 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.edu-illustration__canvas {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.edu-illustration__canvas svg {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--experience-radius-lg);
  overflow: visible;
}

.edu-illustration--welcome svg {
  filter: drop-shadow(0 4px 14px rgba(104, 13, 191, 0.08));
}

.edu-illustration--rhythm .edu-illustration__canvas {
  max-width: 440px;
}

.edu-illustration--keyboard-guide .edu-illustration__canvas {
  max-width: 460px;
}

.practice-image {
  margin: var(--space-4, 1rem) auto;
  display: flex;
  justify-content: center;
}

.practice-image--posture {
  width: min(100%, 34rem);
  min-height: 12rem;
  overflow: hidden;
  border-radius: var(--experience-radius-lg);
  background: linear-gradient(135deg, #f7f2ff 0%, #fff9f8 100%);
}

.practice-image--posture img {
  display: block;
  width: min(100%, 31rem);
  height: 15rem;
  object-fit: contain;
  object-position: center bottom;
  filter: drop-shadow(0 0.55rem 0.8rem rgba(36, 17, 88, 0.12));
}

.practice-image--finger-gym {
  width: min(100%, 38rem);
  min-height: 13rem;
  overflow: hidden;
  border-radius: var(--experience-radius-lg);
  background: linear-gradient(135deg, #f7f2ff 0%, #fff9f8 100%);
}

.practice-image--finger-gym img {
  display: block;
  width: 100%;
  height: 16rem;
  object-fit: contain;
  object-position: center;
  filter: drop-shadow(0 0.55rem 0.8rem rgba(36, 17, 88, 0.12));
}

.practice-image--patterns {
  width: min(100%, 42rem);
  min-height: 13rem;
  overflow: hidden;
  border-radius: var(--experience-radius-lg);
  background: linear-gradient(135deg, #f7f2ff 0%, #fff9f8 100%);
}

.practice-image--patterns img {
  display: block;
  width: 100%;
  height: 16rem;
  object-fit: contain;
  object-position: center;
  filter: drop-shadow(0 0.55rem 0.8rem rgba(36, 17, 88, 0.12));
}

.practice-image--keyboard-location {
  width: min(100%, 38rem);
  min-height: 12rem;
  overflow: hidden;
  border-radius: var(--experience-radius-lg);
  background: linear-gradient(135deg, #f7f2ff 0%, #fff9f8 100%);
}

.practice-image--keyboard-location img {
  display: block;
  width: 100%;
  height: 15rem;
  object-fit: contain;
  object-position: center;
  filter: drop-shadow(0 0.55rem 0.8rem rgba(36, 17, 88, 0.12));
}

.practice-image--rhythm-figures {
  width: min(100%, 38rem);
  min-height: 12rem;
  overflow: hidden;
  border-radius: var(--experience-radius-lg);
  background: linear-gradient(135deg, #f7f2ff 0%, #fff9f8 100%);
}

.practice-image--rhythm-figures img {
  display: block;
  width: 100%;
  height: 15rem;
  object-fit: contain;
  object-position: center;
  filter: drop-shadow(0 0.55rem 0.8rem rgba(36, 17, 88, 0.12));
}

@media (max-width: 34rem) {
  .practice-image--posture {
    min-height: 10rem;
  }

  .practice-image--posture img {
    height: 12rem;
  }

  .practice-image--finger-gym {
    min-height: 10rem;
  }

  .practice-image--finger-gym img {
    height: 12rem;
  }

  .practice-image--patterns {
    min-height: 10rem;
  }

  .practice-image--patterns img {
    height: 12rem;
  }

  .practice-image--keyboard-location {
    min-height: 10rem;
  }

  .practice-image--keyboard-location img {
    height: 12rem;
  }

  .practice-image--rhythm-figures {
    min-height: 10rem;
  }

  .practice-image--rhythm-figures img {
    height: 12rem;
  }
}

/* =========================================================
   Modal del equipo Musicala
   ========================================================= */

.team-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 3vw, 2rem);
}

.team-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(12, 10, 30, 0.42);
  backdrop-filter: blur(8px);
}

.team-modal__dialog {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  width: min(1120px, 100%);
  height: min(820px, calc(100vh - 2rem));
  overflow: hidden;
  border: 1px solid var(--experience-border);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 28px 80px rgba(12, 10, 30, 0.24);
}

.team-modal__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4, 1.25rem);
  padding-bottom: var(--space-4, 1.25rem);
  border-bottom: 1px solid var(--experience-border);
}

.team-modal__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem;
}

.team-modal__frame-wrap {
  min-height: 0;
  overflow: hidden;
  border-radius: var(--experience-radius-lg);
  background: #ffffff;
}

.team-modal__frame {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 620px;
  border: 0;
  background: #ffffff;
}

/* =========================================================
   Mejoras de foco y botones dentro de experiencia
   ========================================================= */

.experience-header button,
.experience-stage button,
.welcome-panel button,
.objectives-panel button,
.team-modal button {
  -webkit-tap-highlight-color: transparent;
}

.experience-header a:focus-visible,
.experience-header button:focus-visible,
.experience-stage button:focus-visible,
.welcome-panel button:focus-visible,
.objectives-panel button:focus-visible,
.team-modal button:focus-visible,
.team-modal a:focus-visible {
  outline: 3px solid rgba(104, 13, 191, 0.24);
  outline-offset: 3px;
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 1180px) {
  .experience-flow {
    grid-template-columns: minmax(240px, 290px) minmax(0, 1fr);
    gap: var(--space-5, 1.5rem);
  }

  .welcome-section-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 960px) {
  .experience-header--compact,
  .experience-flow {
    grid-template-columns: 1fr;
  }

  .experience-flow__rail {
    position: static;
    max-height: none;
    overflow: visible;
  }

  .step-rail__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .objectives-list,
  .support-card-grid,
  .callout-grid,
  .bullet-group-grid {
    grid-template-columns: 1fr;
  }

  .survey-section {
    padding: var(--space-4, 1.25rem);
    border-radius: 20px;
  }

  .song-row {
    grid-template-columns: 1fr;
  }

  .practice-resource__frame {
    min-height: 640px;
  }

  .team-modal__dialog {
    height: min(760px, calc(100vh - 1.5rem));
  }
}

@media (max-width: 680px) {
  .experience-header {
    padding: 1.15rem;
    border-radius: 22px;
  }

  .experience-header .hero-title {
    font-size: clamp(2.1rem, 12vw, 3rem) !important;
  }

  .experience-header__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .experience-header__actions > * {
    justify-content: center;
    width: 100%;
  }

  .step-rail__list {
    grid-template-columns: 1fr;
  }

  .experience-stage__topbar,
  .team-modal__header {
    flex-direction: column;
    align-items: stretch;
  }

  .experience-stage__actions {
    flex-direction: column-reverse;
  }

  .experience-stage__actions > * {
    width: 100%;
  }

  .survey-section__heading {
    align-items: flex-start;
  }

  .survey-question {
    padding: 1rem;
  }

  .practice-resource {
    padding: 1rem;
    border-radius: 20px;
  }

  .practice-resource__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .practice-resource__actions > * {
    width: 100%;
    justify-content: center;
  }

  /* Los recursos externos a menudo conservan su maqueta de escritorio dentro
     de un iframe. En teléfono se abren a pantalla completa, sin doble scroll. */
  .practice-resource__frame-wrap {
    display: none;
  }

  .practice-resource__mobile-open {
    display: grid;
    gap: 0.45rem;
    padding: 0.9rem;
    border: 1px dashed rgba(104, 13, 191, 0.25);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.78);
    color: var(--experience-muted);
    font-size: 0.88rem;
  }

  .practice-resource__mobile-open strong {
    color: var(--experience-text);
  }

  .team-modal {
    padding: 0.75rem;
  }

  .team-modal__dialog {
    height: calc(100vh - 1.5rem);
    border-radius: 22px;
  }

  .team-modal__actions {
    flex-direction: column;
  }

  .team-modal__actions > * {
    width: 100%;
    justify-content: center;
  }

  .team-modal__frame {
    min-height: 540px;
  }
}

@media (max-width: 430px) {
  .survey-hero__title {
    font-size: 2rem;
  }

  .survey-choice {
    padding: 0.65rem 0.7rem;
  }

  .song-row,
  .task-upload-card,
  .objective-item,
  .welcome-section,
  .support-card,
  .callout-card,
  .bullet-group {
    padding: 1rem;
  }

}

/* =========================================================
   Preferencias de accesibilidad
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
  .step-rail__item,
  .quiz-option,
  .song-field input,
  .survey-textarea,
  .survey-choice {
    transition: none;
  }

  .step-rail__item:hover,
  .quiz-option:hover {
    transform: none;
  }
}

/* =========================================================
   Impresión
   ========================================================= */

@media print {
  .experience-header,
  .experience-stage,
  .step-rail,
  .welcome-panel,
  .objectives-panel,
  .practice-resource,
  .survey-section,
  .song-row,
  .task-upload-card {
    box-shadow: none;
  }

  .experience-flow {
    display: block;
  }

  .experience-flow__rail,
  .experience-header__actions,
  .experience-stage__actions,
  .team-modal {
    display: none !important;
  }

  .practice-resource__frame-wrap {
    display: none;
  }
}