/* ═══════════════════════════════════════════════════════════════
   LA SAGA DE LOS PUERCOS Y LAS HEMBRITAS
   Scroll Animations & Transitions
   ═══════════════════════════════════════════════════════════════ */

/* ── Reading Progress Bar ── */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: transparent;
  z-index: 1000;
  pointer-events: none;
}

.reading-progress__bar {
  height: 100%;
  background: linear-gradient(90deg, var(--blood-dim), var(--blood), var(--blood-bright));
  transform-origin: left;
  transform: scaleX(0);
  will-change: transform;
}

/* CSS Scroll-driven animation for progress bar */
@supports (animation-timeline: scroll()) {
  .reading-progress__bar {
    animation: progressFill 1s linear;
    animation-timeline: scroll();
  }

  @keyframes progressFill {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
  }
}

/* ── Scroll Reveal Base ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* CSS Scroll-driven reveal (progressive enhancement) */
@supports (animation-timeline: view()) {
  .reveal-scroll {
    animation: scrollReveal linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 30%;
  }

  @keyframes scrollReveal {
    from {
      opacity: 0;
      transform: translateY(40px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* ── Specific Reveal Variants ── */

/* Fade only — for paragraphs */
.reveal--fade {
  transform: none;
}

.reveal--fade.is-visible {
  transform: none;
}

/* Slide from left — for dialogue */
.reveal--left {
  transform: translateX(-30px);
}

.reveal--left.is-visible {
  transform: translateX(0);
}

/* Rise from below — for verdicts */
.reveal--rise {
  transform: translateY(50px);
}

.reveal--rise.is-visible {
  transform: translateY(0);
}

/* Scale in — for chapter titles */
.reveal--scale {
  transform: scale(0.92);
}

.reveal--scale.is-visible {
  transform: scale(1);
}

/* ── Staggered Children ── */
.stagger > .reveal:nth-child(1) { transition-delay: 0s; }
.stagger > .reveal:nth-child(2) { transition-delay: 0.1s; }
.stagger > .reveal:nth-child(3) { transition-delay: 0.2s; }
.stagger > .reveal:nth-child(4) { transition-delay: 0.3s; }
.stagger > .reveal:nth-child(5) { transition-delay: 0.4s; }
.stagger > .reveal:nth-child(6) { transition-delay: 0.5s; }
.stagger > .reveal:nth-child(7) { transition-delay: 0.6s; }
.stagger > .reveal:nth-child(8) { transition-delay: 0.7s; }
.stagger > .reveal:nth-child(9) { transition-delay: 0.8s; }
.stagger > .reveal:nth-child(10) { transition-delay: 0.9s; }

/* ── Part/Chapter Transitions ── */

/* Full-screen title entrance */
.part-entrance {
  opacity: 0;
}

.part-entrance.is-visible {
  animation: partReveal 2s var(--ease-out) forwards;
}

@keyframes partReveal {
  0% {
    opacity: 0;
    letter-spacing: 0.5em;
    filter: blur(8px);
  }
  60% {
    opacity: 0.6;
    letter-spacing: 0.2em;
    filter: blur(2px);
  }
  100% {
    opacity: 1;
    letter-spacing: 0.15em;
    filter: blur(0);
  }
}

/* Chapter title with blood underline */
.chapter-title-animated {
  position: relative;
  display: inline-block;
}

.chapter-title-animated::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blood);
  transition: width 1s var(--ease-out) 0.3s;
}

.chapter-title-animated.is-visible::after {
  width: 100%;
}

/* ── Special Moments ── */

/* Death scene — red pulse */
.death-scene {
  position: relative;
}

.death-scene::before {
  content: '';
  position: absolute;
  inset: -20px;
  background: radial-gradient(
    ellipse at center,
    rgba(139, 26, 26, 0.06) 0%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 2s var(--ease-out);
  pointer-events: none;
  z-index: -1;
}

.death-scene.is-visible::before {
  opacity: 1;
}

/* WARAU flash */
.warau-moment {
  position: relative;
}

.warau-moment.is-visible {
  animation: warauPulse 0.8s var(--ease-out);
}

@keyframes warauPulse {
  0% { text-shadow: 0 0 0 transparent; }
  50% { text-shadow: 0 0 20px rgba(196, 163, 90, 0.3); }
  100% { text-shadow: 0 0 0 transparent; }
}

/* Verdict slam */
.verdict-animated {
  opacity: 0;
  transform: scale(1.3);
}

.verdict-animated.is-visible {
  animation: verdictSlam 0.6s var(--ease-out) forwards;
}

@keyframes verdictSlam {
  0% {
    opacity: 0;
    transform: scale(1.3);
    filter: blur(4px);
  }
  70% {
    opacity: 1;
    transform: scale(0.98);
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
}

/* ── The Ecos Section — Floating Quotes ── */
.ecos-container {
  position: relative;
  padding: var(--space-2xl) 0;
}

.eco-quote {
  opacity: 0;
  transform: translateY(20px);
  transition: all 1.5s var(--ease-out);
  padding: var(--space-md) 0;
}

.eco-quote.is-visible {
  opacity: 1;
  transform: translateY(0);
  color: var(--parchment-dim);
}

.eco-quote:hover {
  color: var(--parchment);
}

/* Stagger ecos */
.eco-quote:nth-child(odd) {
  text-align: left;
  padding-left: 10%;
}

.eco-quote:nth-child(even) {
  text-align: right;
  padding-right: 10%;
}

/* ── Festín Table Animation ── */
.festin-table {
  opacity: 0;
  transform: translateY(20px);
}

.festin-table.is-visible {
  animation: festinReveal 1s var(--ease-out) forwards;
}

.festin-table.is-visible tr {
  animation: rowReveal 0.5s var(--ease-out) forwards;
  opacity: 0;
}

.festin-table.is-visible tr:nth-child(1) { animation-delay: 0.2s; }
.festin-table.is-visible tr:nth-child(2) { animation-delay: 0.35s; }
.festin-table.is-visible tr:nth-child(3) { animation-delay: 0.5s; }
.festin-table.is-visible tr:nth-child(4) { animation-delay: 0.65s; }
.festin-table.is-visible tr:nth-child(5) { animation-delay: 0.8s; }
.festin-table.is-visible tr:nth-child(6) { animation-delay: 0.95s; }
.festin-table.is-visible tr:nth-child(7) { animation-delay: 1.1s; }

@keyframes festinReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes rowReveal {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ── The Entrance Veil ── */
.entrance-veil {
  position: fixed;
  inset: 0;
  background: var(--abyss-deep);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: opacity 1.5s var(--ease-out);
}

.entrance-veil.is-lifting {
  opacity: 0;
  pointer-events: none;
}

.entrance-veil__text {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: var(--fs-xl);
  font-weight: 300;
  color: var(--parchment-dim);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: veiled 3s ease-in-out infinite;
}

@keyframes veiled {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 0.7; }
}

/* ── Text Blur Reveal (CSS scroll-driven, progressive enhancement) ── */
@supports (animation-timeline: view()) {
  .chapter p:not(.stage-direction):not(.verdict):not(.eco-quote):not(.eco) {
    animation: blurReveal linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 25%;
  }

  @keyframes blurReveal {
    from {
      opacity: 0.08;
      filter: blur(4px);
    }
    to {
      opacity: 1;
      filter: blur(0);
    }
  }

  /* Stage directions get a subtler effect */
  .chapter .stage-direction {
    animation: stageReveal linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 20%;
  }

  @keyframes stageReveal {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
}

/* ── Variable font weight shift for tension ── */
.tension-build {
  transition: font-variation-settings 2s ease;
  font-variation-settings: 'wght' 400;
}

.tension-build.is-visible {
  font-variation-settings: 'wght' 700;
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal--fade,
  .reveal--left,
  .reveal--rise,
  .reveal--scale {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .part-entrance.is-visible {
    animation: none;
    opacity: 1;
  }

  .verdict-animated.is-visible {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .eco-quote {
    opacity: 1;
    transform: none;
    transition: color 0.3s;
    color: var(--parchment-dim);
  }

  .entrance-veil__text {
    animation: none;
    opacity: 0.5;
  }
}