/* ====== Reset ====== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: #f4f6f8;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

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

/* ====== Caja del login ====== */
.login-box {
    background: #fff;
    padding: 30px 25px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    text-align: center;
}

.login-box h1 {
    margin-bottom: 20px;
    color: #1E3A8A;
    font-size: 1.5rem;
}

/* ====== Campos del formulario ====== */
.form-group {
    text-align: left;
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 0.95rem;
    transition: border 0.3s;
}

.form-group input:focus {
    border-color: #1E3A8A;
    outline: none;
}

/* ====== Botón ====== */
.btn {
    background: #1E3A8A;
    color: #fff;
    border: none;
    padding: 12px;
    width: 100%;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background: #475b92;
}

/* ====== Link auxiliar ====== */
.link {
    margin-top: 15px;
    font-size: 0.9rem;
    color: #555;
}

.link a {
    color: #1E3A8A;
    text-decoration: none;
    font-weight: 500;
}

.link a:hover {
    color: #475b92;
    text-decoration: underline;
}

/* ====== Responsive ====== */
@media (max-width: 480px) {
    .login-box {
        padding: 20px 15px;
    }
    .login-box h1 {
        font-size: 1.2rem;
    }
}