body{
    background: var(--color-negro);
    overflow:hidden;
}

/* Fondo */

#img-fondo{
    position:fixed;
    width:1200px;
    height:1200px;
    top:-300px;
    left:-300px;
    background:url("../img/logo_trans.webp") center/contain no-repeat;
    opacity:.3;
    pointer-events:none;
    z-index:-1;
}

/* Contenedor */

main{
    width:100%;
    min-height:100vh;

    display:flex;
    justify-content:center;
    align-items:center;

    padding:30px;
}

/* Tarjeta */

main>div{
    width:420px;
    background:rgba(255,255,255,.98);
    backdrop-filter:blur(10px);
    border-radius:20px;
    padding:30px;
    box-shadow:var(--sombra);
    animation:entrada .45s ease;
}

/* Título */

main h1{
    color:var(--color-negro);
    font-size:2rem;
    font-weight:700;
    text-align:center;
    margin-top: 10px;
}

main p{
    margin-top:8px;
    text-align:center;
    color:#6b7280;
    font-size:.95rem;
}

/* Formulario */

main form{
    margin-top:35px;
    display:flex;
    flex-direction:column;
    gap:20px;
}

/* Labels */

main label{
    color:var(--color-negro);
    font-weight:600;
    margin-bottom:8px;
    display:block;
}

/* Inputs */

main input{
    width:100%;

    padding:14px 16px;

    border:2px solid var(--color-borde-gris);
    border-radius:12px;

    background:#fff;

    color:var(--color-negro);
    font-size:1rem;

    transition:.25s;
}

main input::placeholder{
    color:var(--color-placeholder);
}

main input:hover{
    border-color:#c8d0d9;
}

main input:focus{
    outline:none;

    border-color:var(--color-amarillo);

    box-shadow:
        0 0 0 4px rgba(255,193,71,.25);
}

/* Links */
main a{
    color:#4b5563;
    text-decoration:none;
    font-size:.95rem;
    text-align:center;
    transition:.2s;
}

main a:hover{
    color:var(--color-amarillo);
}

/* Separador */

.separator{
    display:flex;
    align-items:center;
    gap:15px;
    color:#9ca3af;
    font-size:.9rem;
}

.separator::before,
.separator::after{
    content:"";
    flex:1;
    height:1px;
    background:#e5e7eb;
}

.error {
    color: #dc2626;
    font-size: .9rem;
    margin-top: -8px;
}

.error:empty {
    display: none;
}

.header-con-volver {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-con-volver h1 {
    flex: 1;
    text-align: center;
}

.btn-volver {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-borde-gris);
    border-radius: 10px;
    background: #fff;
    color: var(--color-negro);
    font-size: 1.2rem;
    cursor: pointer;
    transition: .25s;
    padding: 0;
    margin: 0;
    box-shadow: none;
}

.btn-volver:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--color-amarillo);
    background: rgba(255,193,71,.1);
}

.btn-volver:active {
    transform: scale(.95);
}

/* Links dentro del formulario (olvido/reenviar código) */
main form a {
    margin-top: -8px;
    font-weight: 600;
}

main form a:disabled,
main form a.disabled {
    pointer-events: none;
    opacity: .5;
}

/* Animación */
@keyframes entrada{

    from{
        opacity:0;
        transform:translateY(30px);
    }

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

}