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

:root{
    --color-primario:#0b3b66;
    --color-primario-hover:#082c4d;
    --color-fondo-1:#eef4f9;
    --color-fondo-2:#dfeaf4;
    --color-card:#ffffff;
    --color-texto:#1f2937;
    --color-texto-sec:#6b7280;
    --color-borde:#d7e1ea;
    --color-error:#b42318;
    --color-error-bg:#fef3f2;
    --sombra:0 18px 45px rgba(11,59,102,.16);
    --radio:22px;
}

html, body{
    width:100%;
    min-height:100%;
    font-family:'Poppins', sans-serif;
    color:var(--color-texto);
    background:
        radial-gradient(circle at top left, rgba(255,255,255,.85), transparent 30%),
        linear-gradient(135deg, var(--color-fondo-1) 0%, var(--color-fondo-2) 100%);
}

body{
    min-height:100vh;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:20px;
}

.login-wrap{
    width:100%;
    max-width:420px;
}

.login-card{
    background:rgba(255,255,255,.92);
    backdrop-filter: blur(8px);
    border:1px solid rgba(255,255,255,.6);
    border-radius:var(--radio);
    box-shadow:var(--sombra);
    overflow:hidden;
}

.login-top{
    padding:24px 24px 10px 24px;
    text-align:center;
}

.logo{
    width:min(170px, 58%);
    height:auto;
    display:block;
    margin:0 auto 12px auto;
}

.titulo-principal{
    font-size:1.35rem;
    font-weight:700;
    line-height:1.2;
    color:var(--color-primario);
    margin-bottom:6px;
}

.subtitulo{
    font-size:.92rem;
    color:var(--color-texto-sec);
    line-height:1.45;
}

.login-body{
    padding:18px 24px 26px 24px;
}

.form-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:16px;
}

.field{
    display:flex;
    flex-direction:column;
    gap:7px;
}

.field label{
    font-size:.92rem;
    font-weight:600;
    color:var(--color-primario);
}

.field input{
    width:100%;
    height:50px;
    border:1px solid var(--color-borde);
    border-radius:14px;
    background:#fff;
    padding:0 14px;
    font-size:.96rem;
    color:var(--color-texto);
    outline:none;
    transition:.2s ease;
}

.field input:focus{
    border-color:var(--color-primario);
    box-shadow:0 0 0 4px rgba(11,59,102,.10);
}

.btn-login{
    width:100%;
    height:52px;
    border:none;
    border-radius:14px;
    background:linear-gradient(135deg, var(--color-primario) 0%, #124b82 100%);
    color:#fff;
    font-size:1rem;
    font-weight:700;
    cursor:pointer;
    transition:.2s ease;
    margin-top:4px;
    box-shadow:0 10px 24px rgba(11,59,102,.20);
}

.btn-login:hover{
    transform:translateY(-1px);
    background:linear-gradient(135deg, var(--color-primario-hover) 0%, #0d3e6d 100%);
}

.btn-login:disabled{
    opacity:.7;
    cursor:not-allowed;
    transform:none;
}

.mensaje-error{
    display:none;
    margin-top:14px;
    padding:12px 14px;
    border-radius:12px;
    border:1px solid #f5c2c7;
    background:var(--color-error-bg);
    color:var(--color-error);
    font-size:.88rem;
    line-height:1.45;
}

.mensaje-error.visible{
    display:block;
}

.footer-mini{
    margin-top:14px;
    text-align:center;
    font-size:.78rem;
    color:#8a94a6;
}

.loader-wrap{
    display:none;
    margin-top:12px;
    text-align:center;
    color:var(--color-texto-sec);
    font-size:.86rem;
}

@media (max-width: 640px){
    body{
        padding:14px;
    }

    .login-wrap{
        max-width:100%;
    }

    .login-card{
        border-radius:18px;
    }

    .login-top{
        padding:20px 18px 8px 18px;
    }

    .login-body{
        padding:16px 18px 20px 18px;
    }
}