:root{
    --bg:#050816;
    --cyan:#35d6ff;
    --blue:#3b82f6;
    --violet:#8b5cf6;
    --text:#eef4ff;
}

/* BASE */
body{
    margin:0;
    font-family:Inter, sans-serif;
    background: linear-gradient(135deg,#050816,#0c1631,#170b2c);
    color:var(--text);
    overflow:hidden;
}

/* CANVAS */
#fireflies-canvas{
    position:fixed;
    inset:0;
    z-index:3;
    pointer-events:none;
}

/* CARD */
.register-card{
    width:100%;
    max-width:420px;
    padding:35px;

    border-radius:20px;
    backdrop-filter: blur(20px);

    background: rgba(255,255,255,0.05);
    border:1px solid rgba(255,255,255,0.1);

    box-shadow:0 20px 60px rgba(0,0,0,0.5);

    animation:fadeUp 0.8s ease;
}

/* ANIMACION */
@keyframes fadeUp{
    from{
        opacity:0;
        transform:translateY(40px);
    }
    to{
        opacity:1;
        transform:translateY(0);
    }
}

/* LOGO */
.brand-icon{
    font-size:36px;
    color:var(--cyan);
    text-shadow:0 0 20px rgba(53,214,255,0.6);
}

.brand-title{
    font-weight:800;
    margin-top:5px;
}

.brand-line{
    width:60px;
    height:3px;
    margin:8px auto;
    background:linear-gradient(90deg,var(--cyan),var(--violet));
}

/* FORM */
.form-group{
    margin-bottom:15px;
}

.form-group label{
    font-size:13px;
    margin-bottom:5px;
    display:block;
    color:#cbd5f5;
}

.form-group input{
    width:100%;
    padding:12px;
    border-radius:10px;
    border:none;

    background:#1e293b;
    color:#fff;
}

/* BOTON */
.btn-submit{
    width:100%;
    padding:13px;
    border:none;
    border-radius:12px;

    background:linear-gradient(135deg,#0ea5e9,#3b82f6,#8b5cf6);
    color:#fff;
    font-weight:600;

    transition:0.3s;
}

.btn-submit:hover{
    transform:scale(1.05);
}

/* LINK */
.link-login{
    color:#38bdf8;
    text-decoration:none;
}

.link-login:hover{
    text-decoration:underline;
}

/* RESPONSIVE */
@media(max-width:480px){
    .register-card{
        padding:25px;
    }
}