/* ============================================================
   historial.css  —  Estudio Vivo · Panel de historial
   Panel deslizante lateral con tarjetas de capítulos visitados.
   ============================================================ */

/* ── Panel principal ── */
#historialPanel {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  width: min(380px, 92vw);
  z-index: 2000;
  background: var(--studio-panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid var(--studio-line);
  box-shadow: -8px 0 48px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1);
  overscroll-behavior: contain;
}

#historialPanel.open {
  transform: translateX(0);
}

/* ── Header del panel ── */
.historial-header {
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--studio-line);
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--studio-panel-muted);
  flex-shrink: 0;
}

/* ── Título ── */
.historial-title {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--studio-ink);
  flex: 1;
  margin: 0;
  letter-spacing: -0.01em;
}

/* ── Botón cerrar ── */
.historial-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--studio-line);
  color: var(--studio-muted);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    background  0.15s ease,
    color       0.15s ease,
    rotate      0.15s ease,
    border-color 0.15s ease;
  flex-shrink: 0;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  line-height: 1;
}

.historial-close:hover {
  background: var(--studio-hover);
  color: var(--studio-ink);
  rotate: 90deg;
  border-color: var(--studio-accent);
}

.historial-close:active {
  transform: scale(0.92);
}

/* ── Lista scrollable ── */
.historial-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--studio-line) transparent;
}

.historial-list::-webkit-scrollbar {
  width: 4px;
}

.historial-list::-webkit-scrollbar-track {
  background: transparent;
}

.historial-list::-webkit-scrollbar-thumb {
  background: var(--studio-line);
  border-radius: 2px;
}

/* ── Tarjeta de capítulo ── */
.historial-card {
  border-radius: var(--studio-radius-lg);
  padding: 14px 16px;
  background: color-mix(in srgb, var(--studio-panel-solid) 70%, transparent);
  border: 1px solid var(--studio-line);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  transition:
    transform    0.18s ease,
    background   0.18s ease,
    box-shadow   0.18s ease,
    border-color 0.18s ease;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

/* Shimmer de fondo al hover */
.historial-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 30%,
    color-mix(in srgb, var(--studio-accent) 6%, transparent) 50%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
}

.historial-card:hover::before {
  opacity: 1;
}

.historial-card:hover {
  transform: translateY(-2px);
  background: var(--studio-hover);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border-color: color-mix(in srgb, var(--studio-accent) 25%, var(--studio-line));
}

.historial-card:active {
  transform: translateY(0px) scale(0.99);
  transition-duration: 0.08s;
}

/* ── Icono del libro ── */
.historial-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(
    135deg,
    var(--studio-accent),
    color-mix(in srgb, var(--studio-accent) 60%, var(--studio-bg))
  );
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--studio-accent) 30%, transparent);
}

/* ── Info del capítulo ── */
.historial-card-info {
  flex: 1;
  min-width: 0;
}

/* ── Nombre libro + capítulo ── */
.historial-card-book {
  font-family: var(--font-title);
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--studio-ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
}

/* ── Meta: versión y tiempo ── */
.historial-card-meta {
  font-size: 0.78rem;
  color: var(--studio-muted);
  margin-top: 3px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.historial-card-meta-sep {
  opacity: 0.4;
}

/* ── Badge versión ── */
.historial-card-version {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--studio-accent) 12%, transparent);
  color: var(--studio-accent);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.02em;
}

/* ── Tiempo relativo ── */
.historial-card-time {
  font-size: 0.72rem;
  color: var(--studio-muted);
  opacity: 0.7;
  flex-shrink: 0;
  align-self: flex-start;
  margin-left: auto;
  padding-top: 1px;
}

/* ── Estado vacío ── */
.historial-empty {
  padding: 40px 20px;
  text-align: center;
  color: var(--studio-muted);
}

.historial-empty-icon {
  font-size: 3rem;
  opacity: 0.3;
  display: block;
  margin-bottom: 12px;
  line-height: 1;
}

.historial-empty-text {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--studio-muted);
  max-width: 220px;
  margin: 0 auto;
}

/* ── Overlay oscuro ── */
#historialOverlay {
  position: fixed;
  inset: 0;
  z-index: 1999;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

#historialOverlay.visible {
  opacity: 1;
  pointer-events: all;
}

/* ── Botón historial en el header ── */
.historial-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: var(--studio-radius-md, 8px);
  border: 1px solid var(--studio-line);
  background: transparent;
  color: var(--studio-muted);
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 600;
  transition:
    background   0.15s ease,
    color        0.15s ease,
    border-color 0.15s ease,
    box-shadow   0.15s ease;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  white-space: nowrap;
}

.historial-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.historial-btn:hover {
  background: var(--studio-hover);
  color: var(--studio-ink);
  border-color: color-mix(in srgb, var(--studio-accent) 30%, var(--studio-line));
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.historial-btn:active {
  transform: scale(0.97);
  transition-duration: 0.08s;
}

/* ── Animación de entrada de tarjetas ── */
@keyframes historial-card-in {
  from {
    opacity: 0;
    transform: translateX(16px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.historial-card {
  animation: historial-card-in 0.22s ease both;
}

/* Escalonar la animación de entrada */
.historial-card:nth-child(1)  { animation-delay:  0ms; }
.historial-card:nth-child(2)  { animation-delay: 30ms; }
.historial-card:nth-child(3)  { animation-delay: 60ms; }
.historial-card:nth-child(4)  { animation-delay: 90ms; }
.historial-card:nth-child(5)  { animation-delay: 120ms; }
.historial-card:nth-child(6)  { animation-delay: 150ms; }
.historial-card:nth-child(7)  { animation-delay: 180ms; }
.historial-card:nth-child(8)  { animation-delay: 210ms; }

/* ── Responsivo ── */
@media (max-width: 480px) {
  #historialPanel {
    width: 100vw;
  }

  .historial-card-icon {
    width: 38px;
    height: 38px;
    font-size: 1.1rem;
    border-radius: 10px;
  }

  .historial-card-book {
    font-size: 0.9rem;
  }
}