:root {
  --turquesa: #2ee0cf;
  --turquesa-suave: #7ff0e4;
  --fondo: #04222b;
  --fondo-2: #073a44;
  --texto: #eafcfa;
  --texto-tenue: #9fc9c9;
  --mal: #ff7a92;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  min-height: 100%;
}

body {
  font-family: 'Nunito', system-ui, sans-serif;
  color: var(--texto);
  background: radial-gradient(ellipse at 50% 0%, var(--fondo-2) 0%, var(--fondo) 60%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

#corazones {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

#escenario {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
}

.pantalla {
  display: none;
  width: 100%;
  max-width: 620px;
  /* margin auto en vez de solo align-items: evita que el flex centrado
     corte la parte de arriba cuando la carta es más alta que la pantalla */
  margin: auto;
  text-align: center;
  animation: entrar .6s ease both;
}

.pantalla.activa { display: block; }

@keyframes entrar {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- Candado ---------- */
.candado-icono {
  font-size: 44px;
  margin-bottom: 18px;
  animation: latir 2.4s ease-in-out infinite;
}

@keyframes latir {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.12); }
}

.titulo-grande {
  font-family: 'Caveat', cursive;
  font-size: clamp(44px, 12vw, 68px);
  font-weight: 700;
  color: var(--turquesa);
  line-height: 1.05;
}

/* ---------- Contador vivo ---------- */
.contador-caja {
  margin-top: 14px;
  margin-bottom: 34px;
}

.contador-vivo {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px 14px;
  padding: 11px 22px;
  border: 1px solid rgba(126,240,228,.22);
  border-radius: 999px;
  background: rgba(126,240,228,.05);
}

.unidad {
  font-size: 14px;
  color: var(--texto-tenue);
  white-space: nowrap;
}

.unidad b {
  font-size: 17px;
  font-weight: 700;
  color: var(--turquesa);
  font-variant-numeric: tabular-nums;
}

/* los segundos laten para que se note que está vivo */
.unidad.seg b { animation: pulso 1s ease-in-out infinite; }

@keyframes pulso {
  0%, 100% { opacity: 1; }
  55%      { opacity: .45; }
}

.contador-etiqueta {
  margin-top: 11px;
  font-family: 'Caveat', cursive;
  font-size: 19px;
  color: var(--texto-tenue);
}

.pregunta {
  font-size: 18px;
  line-height: 1.6;
  margin-bottom: 22px;
  color: var(--texto);
}

#form-candado {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

#input-clave {
  width: 100%;
  max-width: 320px;
  padding: 14px 18px;
  font-family: inherit;
  font-size: 17px;
  text-align: center;
  color: var(--texto);
  background: rgba(255,255,255,.06);
  border: 1.5px solid rgba(126,240,228,.3);
  border-radius: 999px;
  outline: none;
  transition: border-color .25s, background .25s;
}

#input-clave:focus {
  border-color: var(--turquesa);
  background: rgba(255,255,255,.1);
}

#input-clave::placeholder { color: rgba(159,201,201,.5); }

#input-clave.error {
  border-color: var(--mal);
  animation: temblar .4s;
}

@keyframes temblar {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-9px); }
  40% { transform: translateX(9px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(6px); }
}

.btn {
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  padding: 13px 38px;
  color: var(--fondo);
  background: var(--turquesa);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform .18s, box-shadow .25s;
  box-shadow: 0 6px 24px rgba(46,224,207,.25);
}

.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(46,224,207,.4); }
.btn:active { transform: translateY(0); }

.btn-texto {
  margin-top: 22px;
  font-family: inherit;
  font-size: 14px;
  color: var(--texto-tenue);
  background: none;
  border: none;
  border-bottom: 1px dashed rgba(159,201,201,.4);
  padding-bottom: 2px;
  cursor: pointer;
}

.btn-texto:hover { color: var(--turquesa-suave); }

.pista {
  margin-top: 16px;
  font-family: 'Caveat', cursive;
  font-size: 22px;
  color: var(--turquesa-suave);
  animation: entrar .4s ease both;
}

.oculto { display: none; }

/* ---------- Niveles ---------- */
.progreso {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 26px;
}

.punto {
  font-size: 17px;
  opacity: .25;
  filter: grayscale(1);
  transition: opacity .4s, filter .4s, transform .4s;
}

.punto.hecho {
  opacity: 1;
  filter: none;
  transform: scale(1.18);
}

.contador {
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--texto-tenue);
  margin-bottom: 14px;
}

.pregunta-nivel {
  font-size: clamp(21px, 5vw, 27px);
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 32px;
}

.opciones {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.opcion {
  font-family: inherit;
  font-size: 17px;
  padding: 17px 20px;
  color: var(--texto);
  text-align: center;
  background: rgba(255,255,255,.05);
  border: 1.5px solid rgba(126,240,228,.22);
  border-radius: 16px;
  cursor: pointer;
  transition: background .2s, border-color .2s, transform .15s;
}

.opcion:hover {
  background: rgba(46,224,207,.12);
  border-color: var(--turquesa);
  transform: translateY(-2px);
}

.opcion.bien {
  background: rgba(46,224,207,.28);
  border-color: var(--turquesa);
}

.opcion.mal {
  border-color: var(--mal);
  background: rgba(255,122,146,.14);
  animation: temblar .4s;
}

/* ---------- Recuerdo ---------- */
.recuerdo-media { margin-bottom: 26px; }

.recuerdo-media img {
  width: 100%;
  max-width: 340px;
  border-radius: 18px;
  border: 3px solid rgba(126,240,228,.35);
}

.corazon-placeholder {
  font-size: 46px;
  animation: latir 2.4s ease-in-out infinite;
}

.recuerdo-texto {
  font-family: 'Caveat', cursive;
  font-size: clamp(25px, 6vw, 32px);
  line-height: 1.45;
  color: var(--turquesa-suave);
  margin-bottom: 34px;
}

/* ---------- Carta ---------- */
#pantalla-carta.activa { display: block; }

.titulo-carta {
  font-family: 'Caveat', cursive;
  font-size: clamp(30px, 7vw, 42px);
  line-height: 1.25;
  color: var(--turquesa);
  margin-bottom: 30px;
}

.carta-cuerpo {
  text-align: left;
  font-size: 17px;
  line-height: 1.85;
}

.carta-cuerpo p { margin-bottom: 20px; min-height: 1em; }

.cursor::after {
  content: '';
  display: inline-block;
  width: 2px;
  height: 1.05em;
  background: var(--turquesa);
  margin-left: 2px;
  vertical-align: -.15em;
  animation: parpadeo .75s step-end infinite;
}

@keyframes parpadeo { 50% { opacity: 0; } }

/* mientras ella toca para acelerar, el cursor late más rápido */
body.acelerando .cursor::after { animation-duration: .22s; }

.carta-firma {
  font-family: 'Caveat', cursive;
  font-size: 27px;
  line-height: 1.4;
  color: var(--turquesa);
  text-align: right;
  white-space: pre-line;   /* respeta el salto de línea de la firma */
  margin-top: 26px;
  opacity: 0;
  transition: opacity 1.4s;
}

.carta-firma.visible { opacity: 1; }

/* ---------- Frases que saltan ---------- */
#capa-frases {
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  overflow: hidden;
}

.frase {
  position: absolute;
  left: 50%;
  top: 52%;
  max-width: 90vw;
  text-align: center;
  font-family: 'Caveat', cursive;
  font-size: clamp(32px, 9vw, 52px);
  font-weight: 700;
  color: var(--mal);
  text-shadow: 0 4px 26px rgba(4,34,43,.9);
  animation: saltar 1.5s cubic-bezier(.22,1,.36,1) forwards;
}

.frase.buena { color: var(--turquesa); }

@keyframes saltar {
  0%   { opacity: 0; transform: translate(-50%, 40px) scale(.5) rotate(var(--giro)); }
  22%  { opacity: 1; transform: translate(-50%, -34px) scale(1.18) rotate(var(--giro)); }
  38%  { opacity: 1; transform: translate(-50%, -18px) scale(1) rotate(var(--giro)); }
  100% { opacity: 0; transform: translate(-50%, -160px) scale(.94) rotate(var(--giro)); }
}

/* ---------- Volumen (abajo a la derecha) ---------- */
.control-volumen {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(4,34,43,.55);
  border: 1.5px solid rgba(126,240,228,.28);
  backdrop-filter: blur(8px);
  transition: opacity .3s;
}

.btn-musica {
  flex: none;
  width: 40px;
  height: 40px;
  font-size: 17px;
  line-height: 1;
  color: var(--turquesa);
  background: none;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: transform .2s;
}

.btn-musica:hover { transform: scale(1.12); }

/* la barra vive escondida y se despliega al tocar la bocina */
.volumen-slider {
  width: 0;
  opacity: 0;
  margin: 0;
  padding: 0;
  pointer-events: none;
  transition: width .3s ease, opacity .25s ease, margin .3s ease;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 999px;
  background: rgba(126,240,228,.25);
  cursor: pointer;
}

.control-volumen.abierto .volumen-slider {
  width: 108px;
  opacity: 1;
  margin-left: 10px;
  pointer-events: auto;
}

.volumen-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px;
  height: 15px;
  border: none;
  border-radius: 50%;
  background: var(--turquesa);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(46,224,207,.6);
}

.volumen-slider::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border: none;
  border-radius: 50%;
  background: var(--turquesa);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(46,224,207,.6);
}

/* silenciado: todo el control se apaga visualmente */
.control-volumen.mudo { opacity: .45; }