@import url("https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;400;600&display=swap");

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:"Open Sans",sans-serif;
}

body{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:100vh;
  padding:0 10px;
  position:relative;
}

/* Fondo */
body::before{
  content:"";
  position:absolute;
  inset:0;
  background:url("../imagenes/bk.png") center/cover no-repeat, #000;
  z-index:-1;
}

/* Card login */
.wrapper{
  width:380px;
  padding:40px 30px;
  border-radius:10px;
  text-align:center;
  background:rgba(0,0,0,.45);
  backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.2);
  box-shadow:0 0 25px rgba(0,0,0,.6);
}

form{
  display:flex;
  flex-direction:column;
}

/* Campo */
.input-field{
  position:relative;
  border-bottom:2px solid rgba(255,255,255,.8);
}

.input-field input{
  width:100%;
  height:55px;          /* más alto */
  padding-top:20px;     /* espacio arriba para que no choque con label */
  background:transparent;
  border:none;
  outline:none;
  font-size:16px;
  color:#fff;
  letter-spacing:1px;
}


.input-field label{
  position:absolute;
  top:50%;
  left:0;
  transform:translateY(-50%);
  color:#fff;
  font-size:15px;
  transition:.3s ease;
  pointer-events:none;
}

/* Animación label */
.input-field input:focus~label,
.input-field input:valid~label{
  top:0px;          /* sube más el label */
  font-size:12px;
  color:#fff;       /* siempre blanco */
}


/* Línea focus */
.input-field input:focus{
  border-bottom:2px solid rgba(255,255,255,.8);
  color:#fff;
}

/* Botón */
button{
    margin-top: 15px;
    padding: 14px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    color: #fff;
    background: transparent;
    transition: .3s ease;
    letter-spacing: 1px;
    border: 1px solid;
}

button:hover{
  background:rgba(255,0,0,.15);
  box-shadow:0 0 12px rgba(255,0,0,.4);
}


button:hover{
  background:#e53935;
  box-shadow:0 0 15px rgba(255,0,0,.5);
}

/* Mensajes */
.msg{
  font-size:13px;
  margin-top:5px;
  min-height:18px;
}

.msg.error{color:#ff4d4d;}
.msg.ok{color:#4caf50;}

/* Toast alert */
.toast{
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .2px;

  display: none;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity .25s ease, transform .25s ease;

  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.35);
  color: #fff;
}

.toast.show{
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.toast.error{
  border-color: rgba(255, 77, 77, .55);
  background: rgba(255, 77, 77, .12);
  color: #ffd1d1;
  box-shadow: 0 0 18px rgba(255, 77, 77, .18);
}

.toast.ok{
  border-color: rgba(76, 175, 80, .55);
  background: rgba(76, 175, 80, .12);
  color: #d6ffe0;
  box-shadow: 0 0 18px rgba(76, 175, 80, .18);
}