/* ============ TOKENS (mismos que capítulo 2, para que se sientan del mismo libro) ============ */
:root{
  --paper:#f3e9d2;
  --paper-dark:#e9dcbd;
  --ink:#2b211c;
  --burgundy:#7a1f2b;
  --burgundy-light:#a5384a;
  --pink:#e75480;
  --teal:#1f6f78;
  --gold:#d6a419;
  --shadow: rgba(43,33,28,.25);

  --font-heading: 'Bungee', cursive;
  --font-body: 'Quicksand', sans-serif;
  --font-letter: 'Caveat', cursive;
  --font-mono: 'Space Mono', monospace;
  --font-pixel: 'Press Start 2P', monospace;
}

*{ box-sizing:border-box; }

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:18px;
  line-height:1.5;
  overflow-x:hidden;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

a{ color:inherit; }
:focus-visible{ outline:3px dashed var(--teal); outline-offset:3px; }
button{ font:inherit; }

.paper-texture{
  position:absolute; inset:0; opacity:.5; pointer-events:none;
  background-image:
    repeating-linear-gradient(0deg, transparent 0 2px, #00000006 2px 3px),
    repeating-linear-gradient(90deg, transparent 0 2px, #00000004 2px 3px);
}

@keyframes float{ 0%,100%{ transform:translateY(0); } 50%{ transform:translateY(-10px); } }
@keyframes pulse{ 0%,100%{ transform:scale(1); } 50%{ transform:scale(1.25); } }
@keyframes wiggle{ 0%,100%{ transform:rotate(-3deg); } 50%{ transform:rotate(3deg); } }
@keyframes blink{ 50%{ opacity:.2; } }
.typewriter-cursor{ animation:blink 1s steps(1) infinite; }

/* ============ LOGRO CON MASCOTA (idéntico a capítulo 2) ============ */
html.ach-lock-scroll{ overflow:hidden; }
.achievement-overlay{
  position:fixed; inset:0; z-index:20000; pointer-events:auto;
  display:flex; align-items:center; justify-content:center;
}
.achievement-overlay[hidden]{ display:none; }
.ach-scrim{
  position:absolute; inset:0; background:rgba(10,8,6,.8); opacity:0;
  transition:opacity .35s ease;
}
.achievement-overlay.active .ach-scrim{ opacity:1; }

.ach-stage{
  position:relative; z-index:1; display:flex; flex-direction:column; align-items:center;
  gap:14px; padding:0 20px; max-width:min(90vw, 420px); width:100%;
  opacity:1; transform:scale(1);
  transition:opacity .4s ease, transform .4s ease;
}
.ach-stage.ach-closing{ opacity:0; transform:scale(.82) translateY(-12px); }

.ach-mascot{
  width:120px; height:120px; object-fit:contain;
  filter:drop-shadow(4px 6px 0 rgba(0,0,0,.4));
  opacity:0; transform:scale(.4) translateY(30px);
  transition:opacity .4s cubic-bezier(.34,1.56,.64,1), transform .4s cubic-bezier(.34,1.56,.64,1);
}
.achievement-overlay.active .ach-mascot{ opacity:1; transform:scale(1) translateY(0); }

.ach-speech{
  position:relative; background:#fff8ea; border:2px solid var(--ink); border-radius:14px;
  padding:12px 16px; box-shadow:4px 4px 0 rgba(0,0,0,.4);
  opacity:0; transform:translateY(10px) scale(.9);
  transition:opacity .3s ease, transform .3s ease;
  max-width:min(80vw, 320px);
}
.ach-speech.show{ opacity:1; transform:translateY(0) scale(1); }
.ach-speech::after{
  content:''; position:absolute; top:100%; left:50%; transform:translateX(-50%);
  width:0; height:0; border:8px solid transparent; border-top-color:#fff8ea; border-bottom:0;
}
.ach-speech-text{ margin:0; font-family:var(--font-letter); font-size:1.2rem; line-height:1.3; color:var(--ink); text-align:center; }

.ach-banner{
  display:flex; align-items:center; gap:12px; width:100%;
  background:linear-gradient(180deg, #4a4034 0%, #241f19 100%);
  border-top:3px solid #fbe28a; border-bottom:3px solid #6b5a2e;
  box-shadow:0 6px 0 rgba(0,0,0,.35), 0 0 0 2px #000;
  padding:10px 14px; border-radius:2px;
  opacity:0; transform:translateY(18px) scale(.92);
  transition:opacity .3s cubic-bezier(.34,1.56,.64,1), transform .3s cubic-bezier(.34,1.56,.64,1);
}
.ach-banner.show{ opacity:1; transform:translateY(0) scale(1); }
.ach-banner-icon{
  flex-shrink:0; width:40px; height:40px; display:flex; align-items:center; justify-content:center;
  font-size:22px; background:#1c1712; border:2px solid #6b5a2e; border-radius:4px;
}
.ach-banner-copy{ flex:1; min-width:0; }
.ach-banner-kicker{
  margin:0 0 5px; font-family:var(--font-pixel); font-size:9px; letter-spacing:.03em;
  color:#ffd866; text-shadow:1px 1px 0 #000;
}
.ach-banner-title{
  margin:0; font-family:var(--font-pixel); font-size:10px; line-height:1.6;
  color:#fff; text-shadow:1px 1px 0 #000;
}
.ach-banner-count{
  flex-shrink:0; font-family:var(--font-pixel); font-size:11px; color:#ffd866;
  text-shadow:1px 1px 0 #000; padding-left:10px; border-left:2px solid #6b5a2e;
}

@media (prefers-reduced-motion: reduce){
  .ach-scrim, .ach-mascot, .ach-speech, .ach-banner, .ach-stage{ transition:opacity .2s linear; }
  .ach-mascot, .ach-speech, .ach-banner, .ach-stage, .ach-stage.ach-closing{ transform:none !important; }
}

@media (max-width:640px){
  .ach-mascot{ width:88px; height:88px; }
  .ach-banner-title{ font-size:9px; }
  .ach-banner-kicker{ font-size:8px; }
}

/* ============ LUZ DE VELA AMBIENTAL (respira suavemente detrás de todo) ============ */
#candle-glow{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background:radial-gradient(ellipse at 50% 30%, #ffdb8a22, transparent 60%);
  animation:candle-breathe 6s ease-in-out infinite;
}
@keyframes candle-breathe{ 0%,100%{ opacity:.6; } 50%{ opacity:1; } }

/* ============ TAPA DEL LIBRO ============ */
.cover{
  position:relative;
  min-height:100vh;
  display:flex; align-items:center; justify-content:center;
  padding:60px 70px;
  overflow:hidden;
}

.cover-deco{ position:absolute; inset:0; pointer-events:none; }
.cover-deco span{
  position:absolute; color:var(--gold); opacity:.45; font-size:1.5rem;
  animation:float 7s ease-in-out infinite;
}
.cd-1{ top:12%; left:8%; color:var(--pink); }
.cd-2{ bottom:16%; left:11%; color:var(--teal); font-size:1.2rem; animation-delay:2.1s; }

/* frases sueltas, como notitas escritas al margen */
.phrase{
  position:absolute; font-family:var(--font-letter); font-weight:600;
  opacity:.5; white-space:nowrap; animation:float 8s ease-in-out infinite;
  pointer-events:none;
}
.phrase.ph1{ top:14%; left:4%; font-size:1.05rem; color:var(--burgundy); transform:rotate(-6deg); animation-delay:.6s; }
.phrase.ph2{ top:20%; right:4%; font-size:.95rem; color:var(--teal); transform:rotate(4deg); animation-delay:1.4s; }
.phrase.ph3{ bottom:12%; left:5%; font-size:1.1rem; color:var(--gold); transform:rotate(-3deg); animation-delay:2.2s; }
.phrase.ph4{ bottom:10%; right:5%; font-size:1rem; color:var(--burgundy); transform:rotate(5deg); animation-delay:.2s; }
@media (max-width:760px){ .phrase{ display:none; } }

/* pétalos cayendo despacio por toda la página */
#petals{ position:fixed; inset:0; z-index:1; pointer-events:none; overflow:hidden; }
.petal{
  position:absolute; top:-40px; font-size:1.3rem;
  animation:petal-fall linear infinite;
  filter:drop-shadow(1px 1px 0 rgba(0,0,0,.08));
}
.petal.is-magic{ pointer-events:auto; cursor:pointer; }
@keyframes petal-fall{
  0%{ transform:translate(0,0) rotate(0deg); opacity:0; }
  8%{ opacity:.8; }
  92%{ opacity:.8; }
  100%{ transform:translate(var(--drift,40px), 105vh) rotate(340deg); opacity:0; }
}

.cover-frame{
  position:relative;
  z-index:2;
  max-width:640px; width:100%;
  background:var(--paper-dark);
  border:3px double var(--ink);
  border-left:none;
  box-shadow:12px 12px 0 var(--shadow);
  padding:56px 40px 46px 54px;
  text-align:center;
  transform-style:preserve-3d;
  transform-origin:left center;
  transition:transform .7s cubic-bezier(.6,0,.4,1), box-shadow .7s ease;
}
.cover-frame.turning{ transform:rotateY(-24deg) translateX(-6px); box-shadow:26px 14px 22px var(--shadow); }

/* lomo del libro, pegado al borde izquierdo del marco */
.cover-spine{
  position:absolute; left:-16px; top:-3px; bottom:-3px; width:16px;
  background:repeating-linear-gradient(180deg, var(--burgundy) 0 8px, var(--burgundy-light) 8px 10px);
  border:3px double var(--ink); border-right:none;
}

.cover-nutria-peek{
  position:absolute; top:-8px; right:26px; width:64px; height:auto;
  transform:rotate(4deg); filter:drop-shadow(2px 3px 0 var(--shadow));
  animation:wiggle 4.4s ease-in-out infinite; z-index:3;
}

.cover-eyebrow{
  font-family:var(--font-letter); font-size:clamp(1.3rem,3.6vw,1.7rem); color:var(--burgundy);
  margin:0 0 16px; line-height:1.3;
}
.cover-title{
  font-family:var(--font-heading); font-size:clamp(1.8rem,6vw,3rem);
  color:var(--burgundy); margin:0; text-shadow:3px 3px 0 var(--gold);
  line-height:1.2;
}
.cover-title .heart{
  display:inline-block; color:var(--pink); cursor:pointer;
  animation:pulse 1.6s ease-in-out infinite; user-select:none;
}
.cover-byline{
  font-family:var(--font-letter); font-size:clamp(1.3rem,3.4vw,1.8rem);
  color:var(--ink); margin:14px 0 0;
}
.cover-since{
  display:inline-block; margin-top:26px; cursor:pointer;
  font-family:var(--font-mono); font-size:11px; color:var(--ink);
  background:var(--gold); border:2px solid var(--ink); padding:5px 10px;
  transform:rotate(-3deg); box-shadow:3px 3px 0 var(--ink);
  transition:transform .15s ease;
}
.cover-since:hover{ transform:rotate(-1deg) scale(1.04); }

/* doblez de esquina: "pasar la página" en vez de flecha genérica */
.page-fold{
  position:absolute; right:0; bottom:0; width:0; height:0;
  border-style:solid; border-width:0 0 46px 46px;
  border-color:transparent transparent var(--paper) transparent;
  filter:drop-shadow(-2px -2px 3px var(--shadow));
  cursor:pointer; z-index:4;
  transition:border-width .2s ease;
}
.page-fold:hover{ border-width:0 0 58px 58px; }
.page-fold-label{
  position:absolute; left:50%; bottom:20px; transform:translateX(-50%);
  font-family:var(--font-mono); font-size:10px; color:var(--teal); text-align:center;
  white-space:nowrap;
}

/* ============ SPREAD: DEDICATORIA + MEMORANDO como dos páginas abiertas ============ */
.book-spread{
  position:relative; max-width:980px; margin:0 auto; padding:26px 20px 10px;
  display:grid; grid-template-columns:1fr 1fr;
}
.book-spread::before{
  content:''; position:absolute; top:6%; bottom:6%; left:50%; width:22px;
  transform:translateX(-50%);
  background:linear-gradient(90deg, transparent, #0000002a 45%, #0000002a 55%, transparent);
  pointer-events:none; z-index:1;
}
@media (max-width:760px){ .book-spread{ grid-template-columns:1fr; } .book-spread::before{ display:none; } }

.page-leaf{
  position:relative; background:#fff8ea; border:2px solid var(--ink);
  padding:28px 26px; box-shadow:5px 5px 0 var(--shadow);
  transition:transform .25s ease, box-shadow .25s ease;
}
.page-leaf:hover{ transform:translateY(-4px); box-shadow:7px 9px 0 var(--shadow); }
.page-leaf.leaf-left{ margin-right:-1px; clip-path:polygon(0 0,100% 0,100% 96%,94% 100%,0 100%); }
.page-leaf.leaf-right{ margin-left:-1px; clip-path:polygon(0 0,100% 0,100% 100%,6% 100%,0 96%); }
@media (max-width:760px){ .page-leaf.leaf-left, .page-leaf.leaf-right{ clip-path:none; margin:0 0 22px; } }

.page-kicker{
  font-family:var(--font-mono); font-size:10px; text-transform:uppercase; letter-spacing:.08em;
  color:var(--teal); margin:0 0 12px;
}
.dedicatoria p{
  font-family:var(--font-letter); font-size:1.5rem; line-height:1.4; color:var(--ink); margin:0;
}
.page-sign{
  display:block; margin-top:16px; font-family:var(--font-letter); font-size:1.2rem; color:var(--burgundy);
}

/* mancha con secreto debajo (easter egg 3) */
.stain{
  position:absolute; top:14px; right:16px; width:52px; height:52px; border-radius:50%;
  background:radial-gradient(circle at 40% 40%, #b98a3e55, #b98a3e22 70%, transparent 72%);
  cursor:pointer; z-index:2;
}
.stain-note{
  position:absolute; top:10px; right:10px; width:180px;
  background:var(--paper); border:1px solid var(--ink); box-shadow:3px 3px 0 var(--shadow);
  padding:10px 12px; font-family:var(--font-letter); font-size:1.05rem; color:var(--burgundy);
  transform:scale(.3) rotate(8deg); opacity:0; pointer-events:none;
  transition:transform .35s cubic-bezier(.34,1.5,.64,1), opacity .3s ease;
  z-index:3; text-align:left; line-height:1.25;
}
.stain-note.revealed{ transform:scale(1) rotate(-2deg); opacity:1; }

.memorando{ font-family:var(--font-mono); }
.memo-head{
  display:flex; justify-content:space-between; align-items:baseline;
  border-bottom:2px solid var(--ink); padding-bottom:10px; margin-bottom:14px;
}
.memo-head h3{ font-family:var(--font-heading); font-size:.95rem; color:var(--burgundy); margin:0; }
.memo-stamp{
  font-size:10px; color:var(--teal); background:none; border:1px dashed var(--teal);
  padding:3px 7px; cursor:pointer; position:relative;
}
.memo-row{ font-size:12px; margin:0 0 8px; }
.memo-row b{ color:var(--burgundy); }
.memo-body{ font-size:13px; line-height:1.7; margin-top:14px; white-space:pre-line; }

.memo-approved{
  position:absolute; top:44%; left:50%; width:150px;
  transform:translate(-50%,-50%) rotate(-16deg) scale(0);
  border:4px solid var(--pink); color:var(--pink); border-radius:8px;
  font-family:var(--font-heading); font-size:1.1rem; text-align:center; padding:8px 4px;
  opacity:0; pointer-events:none; z-index:4; background:#fff8ea99;
  transition:transform .28s cubic-bezier(.34,1.8,.5,1), opacity .2s ease;
}
.memo-approved.show{ transform:translate(-50%,-50%) rotate(-16deg) scale(1); opacity:.92; }

/* ============ ÍNDICE ============ */
.indice{ padding:70px 20px 90px; position:relative; }
.section-title{ text-align:center; margin:0 auto 6px; max-width:1100px; }
.title-tag{
  font-family:var(--font-heading); font-size:clamp(1.4rem,4vw,2.2rem); color:var(--burgundy);
  background:linear-gradient(transparent 60%, var(--gold) 60%); padding:0 6px;
}
.section-kicker{ text-align:center; font-family:var(--font-letter); font-size:1.4rem; color:var(--teal); margin:0 auto 46px; max-width:1100px; }

.chapters-row{ display:flex; gap:24px; justify-content:center; flex-wrap:wrap; }
.chapter-card{
  position:relative; width:260px; text-align:center; background:#fff8ea;
  border:2px solid var(--ink); box-shadow:4px 4px 0 var(--shadow); padding:26px 24px 22px;
  font-family:var(--font-body); color:var(--ink); text-decoration:none; display:block;
  transition:transform .18s ease;
}
.chapter-current{ border-color:var(--pink); background:linear-gradient(120deg,#fff0f5,#fff8ea); }
.chapter-locked{
  cursor:pointer; border-style:dashed; opacity:.92;
  transition:transform .15s, box-shadow .15s; width:260px;
}
.chapter-locked:hover{ transform:translate(-2px,-2px); box-shadow:6px 6px 0 var(--shadow); }
.chapter-locked:active{ transform:translate(1px,1px); box-shadow:2px 2px 0 var(--shadow); }
.chapter-locked.is-unlocked{
  border-style:solid; border-color:var(--gold); background:linear-gradient(120deg,#fff8ea,#fff3d6);
  animation:chapter-glow 2.4s ease-in-out infinite;
}
@keyframes chapter-glow{
  0%,100%{ box-shadow:4px 4px 0 var(--shadow); }
  50%{ box-shadow:4px 4px 0 var(--shadow), 0 0 20px 3px #d6a41966; }
}
.chapter-lock-icon{ position:absolute; top:12px; right:14px; font-size:1.05rem; color:var(--ink); }
.icon-svg{ width:1em; height:1em; display:inline-block; vertical-align:-0.15em; }
.chapter-locked.is-unlocked .chapter-lock-icon{ display:none; }
.chapter-unlocked-tag{ display:none; position:absolute; top:12px; right:14px; font-size:1.1rem; color:var(--gold); }
.chapter-locked.is-unlocked .chapter-unlocked-tag{ display:inline; animation:pulse 1.4s ease-in-out infinite; }
.chapter-roman{
  display:block; font-family:var(--font-heading); font-size:2.2rem; color:var(--burgundy);
  text-shadow:2px 2px 0 var(--gold); margin-bottom:2px;
}
.chapter-label{
  display:block; font-family:var(--font-mono); font-size:10px; text-transform:uppercase;
  letter-spacing:.06em; color:var(--teal); margin:2px 0 10px;
}
.chapter-card h3{ font-family:var(--font-heading); font-size:1rem; margin:0 0 8px; color:var(--burgundy); }
.chapter-card p{ margin:0; font-size:.88rem; line-height:1.35; }
.chapter-peek{
  position:absolute; bottom:-10px; left:-10px; width:46px; height:auto;
  filter:drop-shadow(2px 2px 0 var(--shadow)); pointer-events:none;
}

/* ---- modal de capítulo bloqueado ---- */
.chapter-modal{
  position:fixed; inset:0; background:#000000cc; display:none;
  align-items:center; justify-content:center; z-index:2100; padding:20px;
}
.chapter-modal.open{ display:flex; }
.chapter-modal-card{
  position:relative; background:var(--paper); border:2px solid var(--ink);
  box-shadow:8px 8px 0 var(--shadow); max-width:420px; width:100%;
  overflow:hidden; animation:chapter-modal-in .4s cubic-bezier(.34,1.3,.4,1);
}
@keyframes chapter-modal-in{
  from{ transform:scale(.7) rotate(-4deg); opacity:0; }
  to{ transform:scale(1) rotate(0deg); opacity:1; }
}
.chapter-modal-paper{
  position:absolute; inset:0; opacity:.5; pointer-events:none; z-index:0;
  background-image:
    repeating-linear-gradient(0deg, transparent 0 2px, #00000006 2px 3px),
    repeating-linear-gradient(90deg, transparent 0 2px, #00000004 2px 3px);
}
.chapter-modal-deco{ position:absolute; inset:0; z-index:1; pointer-events:none; }
.chapter-modal-deco span{ position:absolute; color:var(--gold); opacity:.55; font-size:1.4rem; animation:float 6s ease-in-out infinite; }
.chapter-modal-deco .cmd-1{ top:10%; left:8%; color:var(--pink); }
.chapter-modal-deco .cmd-2{ bottom:14%; right:10%; animation-delay:1s; }
.chapter-modal-deco .cmd-3{ top:14%; right:14%; color:var(--teal); animation-delay:2s; font-size:1.1rem; }
.chapter-modal-tape{ position:absolute; width:60px; height:20px; background:#f3e9d2cc; border:1px solid #0002; box-shadow:0 2px 4px #0002; z-index:3; }
.chapter-modal-tape-tl{ top:-8px; left:26px; transform:rotate(-8deg); }
.chapter-modal-tape-br{ bottom:-8px; right:26px; transform:rotate(6deg); }
.chapter-modal-body{ position:relative; z-index:2; padding:36px 28px 30px; text-align:center; }
.chapter-modal-close{
  position:absolute; top:8px; right:10px; background:none; border:none;
  font-size:20px; cursor:pointer; color:var(--ink); line-height:1; padding:6px; z-index:4;
}
.chapter-modal h3{ font-family:var(--font-heading); font-size:1.15rem; color:var(--burgundy); margin:8px 0; }
.chapter-modal-face-sleepy{ width:74px; height:auto; margin:0 auto; display:block; filter:drop-shadow(2px 3px 0 var(--shadow)); }
.chapter-modal-face-party{ width:100px; height:auto; margin:0 auto 4px; display:block; }
.chapter-countdown{ display:flex; gap:10px; justify-content:center; margin:18px 0 14px; }
.cc-block{ display:flex; flex-direction:column; align-items:center; gap:5px; }
.cc-block span{
  font-family:var(--font-mono); font-weight:700; font-size:1.6rem; min-width:46px;
  background:var(--ink); color:var(--gold); padding:6px 4px; border-radius:4px;
}
.cc-block span.cc-pulse{ animation:cc-pulse .35s ease; }
@keyframes cc-pulse{ 0%{ transform:scale(1.18); } 100%{ transform:scale(1); } }
.cc-block label{ font-size:10px; text-transform:uppercase; letter-spacing:.05em; color:var(--teal); }
.chapter-modal-hint{ font-family:var(--font-letter); font-size:1.15rem; color:var(--teal); margin-top:4px; }

/* ============ REVEAL AL HACER SCROLL: la página "se asienta" en 3D ============ */
.reveal{
  opacity:0; transform:perspective(800px) rotateX(8deg) translateY(24px);
  transform-origin:top center;
  transition:opacity .6s ease, transform .6s cubic-bezier(.2,.7,.3,1);
}
.reveal.visible{ opacity:1; transform:perspective(800px) rotateX(0deg) translateY(0); }

/* ============ TRANSICIÓN DE SALIDA (pasar de capítulo) ============ */
#page-turn-overlay{
  position:fixed; inset:0; z-index:3000; pointer-events:none;
  display:flex; align-items:center; justify-content:center;
  background:transparent;
}
#page-turn-overlay .ptw-page{
  position:absolute; inset:0; background:var(--paper);
  transform:translateX(100%); transform-origin:right center;
  box-shadow:-6px 0 20px var(--shadow);
}
#page-turn-overlay.playing .ptw-page{
  animation:ptw-slide .9s cubic-bezier(.6,0,.35,1) forwards;
}
@keyframes ptw-slide{ from{ transform:translateX(100%); } to{ transform:translateX(0%); } }
#page-turn-overlay .ptw-content{
  position:relative; z-index:2; text-align:center; opacity:0;
}
#page-turn-overlay.playing .ptw-content{ animation:ptw-fade .9s ease forwards .1s; }
@keyframes ptw-fade{ 0%{ opacity:0; } 40%{ opacity:1; } 100%{ opacity:1; } }
#page-turn-overlay img{ width:110px; height:auto; }
#page-turn-overlay p{ font-family:var(--font-letter); font-size:1.6rem; color:var(--burgundy); margin:6px 0 0; }

/* ============ TOAST "LOGRO DESBLOQUEADO" (estilo advancement de Minecraft) ============ */
#mc-toast{
  position:fixed; top:18px; right:18px; z-index:2500;
  display:flex; align-items:center; gap:10px;
  width:300px; max-width:calc(100vw - 36px);
  padding:9px 14px 9px 9px;
  background:linear-gradient(180deg, #4a4030, #2f2820);
  border:2px solid #8a7a4f;
  box-shadow:
    inset 0 0 0 1px #1a140c,
    inset 1px 1px 0 #6b5c3d,
    4px 4px 0 rgba(0,0,0,.35);
  transform:translateX(120%);
  transition:transform .35s cubic-bezier(.2,.8,.3,1.2);
  pointer-events:none;
}
#mc-toast.show{ transform:translateX(0); }
.mc-toast-icon{
  width:38px; height:38px; flex-shrink:0;
  background:#1a140c; border:2px solid #6b5c3d;
  display:flex; align-items:center; justify-content:center; overflow:hidden;
}
.mc-toast-icon img{ width:100%; height:100%; object-fit:cover; image-rendering:pixelated; }
.mc-toast-text{ min-width:0; }
.mc-toast-kicker{
  margin:0 0 3px; font-family:var(--font-pixel); font-size:8px; color:#ffde6b;
  text-shadow:1px 1px 0 #000; letter-spacing:.02em;
}
.mc-toast-title{
  margin:0; font-family:var(--font-pixel); font-size:8.5px; color:#fff;
  text-shadow:1px 1px 0 #000; line-height:1.5;
  overflow-wrap:break-word;
}
@media (max-width:480px){ #mc-toast{ top:10px; right:10px; left:10px; width:auto; } }

footer.cover-footer{
  text-align:center; padding:30px 20px 50px;
  font-family:var(--font-mono); font-size:11px; color:var(--teal);
}

/* ============ CARTA (prototipo, copiado tal cual de capítulo 2) ============ */
.letter-wrap{ max-width:640px; margin:0 auto; position:relative; }

.envelope{
  position:relative; width:100%; height:230px; cursor:pointer; perspective:900px;
  background:linear-gradient(160deg,#fff3d6,#e9d4a3);
  border:2px solid var(--ink); box-shadow:6px 6px 0 var(--shadow);
  overflow:hidden; z-index:5; transform-origin:center;
  transition:transform .55s cubic-bezier(.5,-.2,.9,.4), opacity .5s ease .05s;
}
.envelope::after{
  content:''; position:absolute; inset:0; z-index:1; pointer-events:none;
  background:
    linear-gradient(135deg, transparent 49.4%, rgba(43,33,28,.1) 50%, transparent 50.6%),
    linear-gradient(45deg, transparent 49.4%, rgba(43,33,28,.1) 50%, transparent 50.6%);
}
.envelope-letter-peek{
  position:absolute; left:9%; right:9%; bottom:10px; height:72%;
  background:#fffdf6; border:2px solid var(--ink); border-radius:2px 2px 0 0;
  display:flex; align-items:flex-start; justify-content:center; padding-top:16px;
  transform:translateY(88%); z-index:2;
  transition:transform .6s cubic-bezier(.34,1.3,.4,1) .12s;
}
.envelope-letter-peek-text{ font-family:var(--font-letter); font-size:1.15rem; color:var(--burgundy); opacity:.8; }
.envelope-flap{
  position:absolute; top:0; left:0; width:100%; height:64%;
  background:linear-gradient(160deg,#f3e0ab,#e2c988);
  clip-path:polygon(0 0, 100% 0, 50% 90%);
  border-bottom:2px solid var(--ink);
  transform-origin:top center; transition:transform .7s cubic-bezier(.6,.05,.4,1);
  z-index:3;
}
.envelope-seal{
  position:absolute; top:36%; left:50%; z-index:4;
  transform:translate(-50%,-50%) rotate(-6deg); font-size:2.3rem;
  filter:drop-shadow(2px 3px 0 rgba(43,33,28,.3));
  transition:opacity .35s ease, transform .35s ease;
}
.envelope-hint{
  position:absolute; left:0; right:0; bottom:-28px; z-index:2; margin:0;
  text-align:center; font-family:var(--font-mono); font-size:12px; color:var(--teal);
  animation:envelope-bounce 1.6s ease-in-out infinite;
}
@keyframes envelope-bounce{ 0%,100%{ transform:translateY(0); } 50%{ transform:translateY(5px); } }

.envelope.opening .envelope-flap{ transform:rotateX(-180deg); }
.envelope.opening .envelope-seal{ opacity:0; transform:translate(-50%,-85%) rotate(12deg) scale(.6); }
.envelope.opening .envelope-letter-peek{ transform:translateY(-22%); }
.envelope.tossed{ transform:translate(-135%, 55px) rotate(-38deg); opacity:0; }
.envelope.opened{ visibility:hidden; pointer-events:none; position:absolute; top:0; left:0; }

.letter{
  max-width:640px; margin:0 auto; background:#fffdf6; border:2px solid var(--ink);
  box-shadow:6px 6px 0 var(--shadow); padding:40px 36px; position:relative; overflow:hidden;
  opacity:0; transform:translateY(14px) scale(.98); pointer-events:none;
  max-height:230px;
  transition:opacity .5s ease .05s, transform .5s cubic-bezier(.34,1.2,.4,1) .05s, max-height .6s cubic-bezier(.34,1.2,.4,1) .05s;
}
.letter.is-open{ opacity:1; transform:translateY(0) scale(1); pointer-events:auto; max-height:2400px; }
.letter-ribbon{
  position:absolute; top:-2px; left:36px; background:var(--pink); color:#fff;
  font-family:var(--font-mono); font-size:10px; letter-spacing:.04em;
  padding:6px 12px 10px; clip-path:polygon(0 0,100% 0,100% 100%,50% 78%,0 100%);
  box-shadow:2px 2px 0 var(--shadow); z-index:2;
}
.letter-to{ font-family:var(--font-mono); font-size:13px; text-transform:uppercase; letter-spacing:.08em; color:var(--teal); margin:0 0 18px; position:relative; z-index:1; }
.letter-body{ font-family:var(--font-letter); font-size:1.55rem; line-height:1.5; color:var(--ink); position:relative; z-index:1; }
.letter-sign{ text-align:right; font-family:var(--font-letter); font-size:1.6rem; color:var(--burgundy); margin-top:10px; position:relative; z-index:1; }

.letter-stain{ position:absolute; z-index:0; pointer-events:none; }
.letter-stain.ring{
  border-radius:50%;
  background:radial-gradient(circle, transparent 53%, rgba(107,79,38,.24) 57%, rgba(107,79,38,.13) 64%, transparent 68%);
}
.letter-stain.blob{
  border-radius:44% 56% 62% 38% / 50% 44% 56% 50%;
  background:radial-gradient(circle at 38% 36%, rgba(107,79,38,.13), transparent 70%);
}
.letter-stain.drop{
  width:24px; height:30px; border-radius:50% 50% 50% 4px; transform:rotate(-30deg);
  background:radial-gradient(circle at 35% 30%, rgba(90,110,120,.24), rgba(90,110,120,.09) 60%, transparent 76%);
}
.letter-stain.drop-sm{ width:15px; height:19px; }

@media (max-width:480px){ .letter-body{ font-size:1.35rem; } }

/* ============ CARTA DE BIENVENIDA (solo la primera vez): usa el prototipo de arriba ============ */
.welcome-letter-modal{
  position:fixed; inset:0; z-index:19000; display:none;
  align-items:center; justify-content:center; padding:20px; overflow-y:auto;
  background:rgba(10,8,6,.78);
}
.welcome-letter-modal.open{ display:flex; }
.welcome-letter-wrap{ width:min(560px, 92vw); margin:auto; }
/* misma cintilla del prototipo, pero en teal: ni el rosado de las cartas normales
   ni el dorado de la carta de finalización — para que esta se note distinta a ambas */
.welcome-ribbon{ background:var(--teal); cursor:pointer; }
.welcome-ribbon:hover, .welcome-ribbon:focus-visible{ filter:brightness(1.1); }