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

/* Fondo general */
body {
    background-color: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

/* Contenedor del formulario */
.login-box {
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

/* Título */
.login-box h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #333;
}

/* Campos de entrada */
.login-box input[type="text"],
.login-box input[type="password"] {
    width: 100%;
    padding: 0.8rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fafafa;
    transition: border-color 0.3s;
}

.login-box input:focus {
    border-color: #272727;
    outline: none;
}

/* Botón negro con hover en #272727 */
.login-box button {
    width: 100%;
    padding: 0.8rem;
    background-color: #000000;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s, transform 0.2s;
}

.login-box button:hover {
    background-color: #272727;
    transform: translateY(-1px);
}

/* Mensaje de error */
.error {
    color: #d10000;
    background-color: #ffe0e0;
    padding: 0.5rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}