.reading-page {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.reading-hero__eyebrow {
  margin: 0 0 0.35rem;
  color: var(--aqua);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
}

.reading-hero__title { margin-bottom: 0.65rem; }

.reading-meta-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.reading-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  background: #eef4f8;
  color: var(--blue-deep);
}

.reading-content-card,
.reading-actions-card,
.reading-rating-module {
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

/* YouTube (incl. Shorts): mismo reproductor embed; contenedor 16:9 responsive */
.reading-youtube-embed {
  position: relative;
  width: 100%;
  max-width: none;
  margin: 0 0 1.25rem;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #0f172a;
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.12);
}
.reading-youtube-embed__iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.reading-content {
  margin: 0;
  line-height: 1.75;
  font-size: 1.04rem;
}

.reading-rating-module__title,
.reading-actions-card__title {
  margin: 0 0 0.55rem;
  font-family: var(--font-serif);
  color: var(--blue-deep);
  font-size: 1.15rem;
}

.reading-rails {
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
  display: grid;
  gap: 0.8rem;
}

.reading-rails__title {
  margin: 0;
  font-family: var(--font-serif);
  color: var(--blue-deep);
  font-size: 1.2rem;
}

.reading-rails__desc {
  margin: 0.35rem 0 0;
  color: var(--gray);
}

.reading-rails__progress {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.reading-rails__progress li {
  padding: 0.45rem 0.5rem;
  border: 1px solid #dbe6ef;
  border-radius: 10px;
  color: #66798a;
  font-size: 0.86rem;
  text-align: center;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.reading-rails__progress li.is-active {
  border-color: #7fb3d3;
  background: #eef7fd;
  color: #17405f;
  font-weight: 600;
}

.reading-rails__progress li.is-done {
  border-color: #82c7bb;
  background: #e9faf6;
  color: #155e55;
}

.reading-rails__progress li.is-done::before {
  content: '✓ ';
  font-weight: 700;
}

.reading-rails__progress li.is-just-done {
  animation: rail-done-pop 0.45s ease;
}

.reading-rails__message {
  padding: 0.55rem 0.7rem;
  border-radius: 10px;
  font-size: 0.9rem;
}

.reading-rails__message.is-error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.reading-rails__message.is-success {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.reading-rail-step {
  border: 1px solid #e4edf5;
  border-radius: 12px;
  padding: 0.8rem;
  opacity: 0.6;
  transform: translateY(0);
  transition: opacity 0.25s ease, transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.reading-rail-step h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  color: var(--blue-deep);
}

.reading-rail-step.is-active,
.reading-rail-step.is-done {
  opacity: 1;
}

.reading-rail-step.is-active {
  border-color: #7fb3d3;
  background: #f7fbfe;
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(23, 64, 95, 0.08);
}

.reading-rail-step.is-done {
  border-color: #8fd0c4;
  background: #f7fffc;
}

.reading-rail-step.is-just-done {
  animation: rail-step-complete 0.5s ease;
}

.reading-rail-step.is-locked {
  pointer-events: none;
}

.reading-rails__progress li.is-nudge,
.reading-rail-step.is-nudge {
  animation: rail-nudge 0.38s ease;
}

@keyframes rail-done-pop {
  0% { transform: scale(1); }
  40% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

@keyframes rail-step-complete {
  0% { transform: translateY(0); }
  45% { transform: translateY(-3px); }
  100% { transform: translateY(0); }
}

@keyframes rail-nudge {
  0% { transform: translateX(0); }
  20% { transform: translateX(-2px); }
  40% { transform: translateX(2px); }
  60% { transform: translateX(-1px); }
  80% { transform: translateX(1px); }
  100% { transform: translateX(0); }
}

.reading-rating-module__summary {
  margin: 0 0 0.65rem;
  color: var(--gray);
}

.reading-rating-stars {
  display: inline-flex;
  gap: 0.2rem;
  margin-bottom: 0.35rem;
}

.reading-star input { position: absolute; opacity: 0; pointer-events: none; }

.reading-star span {
  font-size: 1.9rem;
  line-height: 1;
  color: #c5d2de;
  cursor: pointer;
  transition: transform 0.1s ease, color 0.2s ease;
}

.reading-star.is-selected span {
  color: #f6b73c;
}

.reading-star span:hover { transform: translateY(-1px); }

.reading-rating-form__hint {
  margin: 0 0 0.7rem;
  color: var(--gray);
  font-size: 0.9rem;
}

.reading-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

@media (max-width: 760px) {
  .reading-rails__progress {
    grid-template-columns: 1fr;
  }
}

.reading-share-hint {
  margin: 0;
  color: var(--gray);
  font-size: 0.9rem;
}

.reading-confetti {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
}

.reading-confetti__piece {
  position: absolute;
  top: -10px;
  width: 8px;
  height: 12px;
  border-radius: 2px;
  opacity: 0.9;
  background: #3d9b8f;
  animation-name: reading-confetti-fall;
  animation-timing-function: ease-out;
  animation-fill-mode: forwards;
}

.reading-confetti__piece:nth-child(3n) { background: #e07a5f; }
.reading-confetti__piece:nth-child(3n+1) { background: #3d9b8f; }
.reading-confetti__piece:nth-child(3n+2) { background: #1a365d; }

@keyframes reading-confetti-fall {
  0% { transform: translateY(0) rotate(0deg); opacity: 0; }
  8% { opacity: 0.95; }
  100% { transform: translateY(220px) rotate(220deg); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .reading-rails__progress li,
  .reading-rail-step,
  .reading-star span,
  .reading-confetti__piece {
    transition: none !important;
    animation: none !important;
  }
}