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

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, #1e3a8a, #0f172a);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* CONTENEDOR */
.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

/* TARJETA */
.login-card {
    background: #ffffff;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.25);
    text-align: center;
}

/* TITULO */
.login-card h1 {
    font-size: 28px;
    margin-bottom: 10px;
    color: #1e293b;
}

/* SUBTEXTO */
.login-card p {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 30px;
}

/* FORM */
.login-card form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* INPUTS TEXTO Y PASSWORD */
.login-card input[type="text"], 
.login-card input[type="password"] {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #cbd5e1;
    background-color: #f1f5f9;
    font-size: 14px;
    transition: 0.2s ease;
}

.login-card input[type="text"]:focus,
.login-card input[type="password"]:focus {
    outline: none;
    border-color: #2563eb;
    background-color: #ffffff;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

/* BOTÓN */
.login-card input[type="submit"] {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    border: none;
    background-color: #2563eb;
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s ease;
}

.login-card input[type="submit"]:hover {
    background-color: #1d4ed8;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35);
}

.login-card input[type="submit"]:active {
    transform: scale(0.97);
}

.login-card input[type="submit"]:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.4);
}

/* RESPONSIVE */
@media (max-width: 480px) {
    .login-card {
        padding: 30px 20px;
    }

    .login-card h1 {
        font-size: 22px;
    }
}