* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #0f172a;
    color: #fff;
    font-family: Arial, Helvetica, sans-serif;
}

.login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top, #1e293b, #020617);
}

.login-box {
    width: 380px;
    background: #111827;
    padding: 30px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,.08);
}

.login-box h1 {
    margin-top: 0;
}

.login-box label {
    display: block;
    margin: 14px 0 6px;
    color: #cbd5e1;
}

.login-box input {
    width: 100%;
    padding: 14px;
    border-radius: 10px;
    border: none;
    background: #0f172a;
    color: white;
}

.login-box button {
    width: 100%;
    margin-top: 20px;
    padding: 14px;
    border: none;
    border-radius: 12px;
    background: #f97316;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

.alerta {
    background: #7f1d1d;
    padding: 12px;
    border-radius: 10px;
    margin: 15px 0;
}