/* ========= COLORES MODO CLARO ========= */
:root{
  --bg:#F1E3E8;
  --overlay: rgba(255,255,255,.6);
  --card: rgba(255,255,255,.85);
  --card-strong: rgba(245,225,232,.95);
  --text:#2F2F2F;
}

/* ========= MODO OSCURO ========= */
body.dark{
  --bg:#1d1b1c;
  --overlay: rgba(0,0,0,.6);
  --card: rgba(80,50,65,.95);
  --card-strong: rgba(120,70,100,.95);
  --text:#fafafa;
}

body{
  margin:0;
  font-family: system-ui;
  background:var(--bg);
  color:var(--text);
}


/* ========= BOTÓN MODO OSCURO ========= */
.dark-btn{
  position:fixed;
  top:14px;
  right:20px;
  padding:10px 16px;
  border-radius:18px;
  border:none;
  cursor:pointer;
  background:rgba(255,255,255,.7);
  box-shadow:0 10px 25px rgba(0,0,0,.1);
  backdrop-filter: blur(6px);
}

body.dark .dark-btn{
  background:rgba(50,50,50,.75);
  color:#eee;
  font-size:16px;
}


/* ========= HEADER IGUAL QUE INDEX ========= */
.hero{
  margin-top:80px;
  display:flex;
  justify-content:center;
}

.hero-content{
  max-width:900px;
  text-align:center;
  background:var(--card);
  backdrop-filter:blur(10px);
  padding:40px 50px;
  border-radius:22px;
  box-shadow:0 15px 35px rgba(0,0,0,.12);
}

.hero-content h1{
  font-size: 42px;
  font-weight: 800;
}

.hero-content p{
  font-size: 18px;
  line-height: 1.6;
}



/* botón volver */
.volver-btn{
  display:inline-block;
  margin-top:18px;
  padding:10px 16px;
  border-radius:12px;
  text-decoration:none;
  background:#CFA6B2;
  color:white;
}

body.dark .volver-btn{
  background:#b2506c;
}


/* ========= EXPLICACIÓN ========= */

.explicacion{
  max-width: 850px;
  margin: 25px auto;
  text-align: center;
  line-height: 1.8;
  font-size: 18px;   /* ⬅ MISMO TAMAÑO QUE EN EL INDEX */
}

.explicacion strong{
  font-weight: 800;
}



/* ========= TARJETAS ========= */
.contenedor{
  max-width:900px;
  margin:20px auto 120px;
}

.card{
  background:var(--card);
  padding:22px;
  border-radius:18px;
  margin:16px 0;
  position:relative;
}

.card p{
  text-align:center;
   font-size: 1.3rem; 
  font-weight:700;
}

.bola{
  width:18px;
  height:18px;
  border-radius:50%;
  background:#9c2f4a;
  position:absolute;
  top:50%;
  left:10px;
  transform:translateY(-50%);
}

.card:hover .bola{
  animation:mover 1.8s forwards;
}

.linear:hover .bola{ animation-timing-function: linear; }
.ease:hover .bola{ animation-timing-function: ease; }
.ease-in:hover .bola{ animation-timing-function: ease-in; }
.ease-out:hover .bola{ animation-timing-function: ease-out; }
.ease-in-out:hover .bola{ animation-timing-function: ease-in-out; }

@keyframes mover{
  from{ left:10px; }
  to{ left: calc(100% - 30px); }
}


/* ========= FOOTER ========= */
.site-footer{
  text-align:center;
  padding:30px 10px;
  background: var(--overlay);
  box-shadow: 0 -8px 20px rgba(0,0,0,.08);
}

.site-footer span{
  color:#b2506c;
}

/* =========
  RESPONSIVE
========= */
@media (max-width: 768px){

  .hero{
    margin-top: 60px;
  }

  .hero-content{
    padding: 28px 22px;
  }

  .hero-content h1{
    font-size: 28px;
  }

  .hero-content p{
    font-size: 16px;
  }

  .explicacion{
    font-size: 16px;
    padding: 0 12px;
  }

  .contenedor{
    margin: 10px 12px 90px;
  }

  .card{
    padding: 18px;
  }

  .volver-btn{
    padding: 10px 14px;
    font-size: 15px;
  }

  .dark-btn{
    top: 10px;
    right: 10px;
  }
}


@media (max-width: 480px){

  .hero-content h1{
    font-size: 24px;
  }

  .explicacion{
    font-size: 15px;
  }

  .card p{
    font-size: 15px;
  }
}