/* ============================================================================
   LIF Trainer Lab — vista de preview de sesión
   ============================================================================ */

.trainer-preview {
  max-width: 720px;
}

/* -------- Header -------------------------------------------------------- */
.trainer-preview__header {
  margin-bottom: 20px;
}

.trainer-preview__back {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-soft);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.trainer-preview__back:hover {
  border-color: var(--line-strong);
  color: var(--text);
}

/* -------- Tarjeta principal --------------------------------------------- */
.trainer-preview__card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 32px;
}

/* -------- Resumen de filtros -------------------------------------------- */
.trainer-preview__filters {
  margin-bottom: 24px;
}

.trainer-preview__filters-label {
  font-size: 12px;
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: .3px;
  margin-bottom: 10px;
}

.trainer-preview__filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.trainer-preview__filter-chip {
  background: rgba(var(--primary-rgb), .08);
  border: 1px solid rgba(var(--primary-rgb), .25);
  color: var(--text);
  border-radius: 999px;
  font-size: 13px;
  padding: 5px 12px;
  white-space: nowrap;
}

.trainer-preview__open-text {
  font-size: 14px;
  color: var(--text-soft);
  margin: 0;
  font-style: italic;
}

/* -------- Cantidad disponible (informativa) ----------------------------- */
.trainer-preview__count {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.trainer-preview__count-num {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 500;
  color: var(--text);
  line-height: 1;
}

.trainer-preview__count-text {
  font-size: 14px;
  color: var(--text-soft);
}

/* -------- Acciones ------------------------------------------------------ */
.trainer-preview__actions {
  margin-bottom: 18px;
}

.trainer-preview__start {
  background: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  color: white;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 32px;
  letter-spacing: .3px;
  transition: var(--transition);
  width: 100%;
}

.trainer-preview__start:hover:not(:disabled) {
  background: var(--primary-strong, var(--primary));
  transform: translateY(-1px);
  box-shadow: var(--shadow-1);
}

.trainer-preview__start:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.trainer-preview__start:disabled {
  background: var(--line-strong);
  border-color: var(--line-strong);
  color: var(--muted);
  cursor: not-allowed;
}

/* -------- Toggle del límite (opt-in) ------------------------------------ */
.trainer-preview__limit-toggle {
  background: transparent;
  border: none;
  color: var(--text-soft);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  padding: 6px 0;
  text-decoration: underline;
  text-decoration-color: rgba(var(--primary-rgb), .35);
  text-underline-offset: 3px;
  transition: var(--transition);
}

.trainer-preview__limit-toggle:hover {
  color: var(--primary);
}

.trainer-preview__limit-toggle.is-open {
  color: var(--primary);
}

/* -------- Panel de límite ----------------------------------------------- */
.trainer-preview__limit-panel {
  display: none;
  margin-top: 12px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.trainer-preview__limit-label {
  font-size: 12px;
  color: var(--text-soft);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: .2px;
}

.trainer-preview__limit-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* -------- Mobile -------------------------------------------------------- */
@media (max-width: 720px) {
  .trainer-preview__card {
    padding: 22px 20px;
  }
  .trainer-preview__count-num {
    font-size: 30px;
  }
  .trainer-preview__start {
    font-size: 15px;
    padding: 12px 24px;
  }
}